Separation Equipment Company is proud to participate in the quest for viable renewable fuels by providing centrifuges for the tasks at hand. Separation Equipment Company provided Algae centrifuges for concentration of algae prior to extraction of the fuel, we have also provided Vegetable Oil Separators for Gum separation, and Soap separation after chemical treatments of Sunflower and Canola oils.
With most major Marine Engine manufacturers seeing the benefits of the plate heat exchanger (PHE); more often than not, the PHE can be found integrated as the OEM cooling system for these propulsion and generator giants. Some of the most popular manufactures employing the plate heat exchanger technology include Caterpillar (CAT), MTU, Cummins, Detroit Diesel, MAN B&W, Deutz and soon to be others. Most of these Plate Heat Exchangers are OEM supplied by Alfa Laval.
Taking into account the number of engines combined with an average plate pack of 30+ per engine; that's a lot of gaskets. You can now order OEM Genuine Alfa Laval gaskets from Separation Equipment Company. We stock the most commonly used plate heat exchanger gaskets for the Caterpillar & MTU engine sets. Whether you need a complete set for the MTU series 2000, 4000, or the CAT engine C9, C18, C30, C32, 3508B, 3512B, 3516B,and many more; Separation Equipment Company can provide you with quick delivery and the most competitive pricing available.
Silica sand low in iron is much in demand for glass, ceramic and pottery use, and for many of these applications clean, white sand is desired. Impurities such as clay slime, iron stain, and heavy minerals including iron oxides, garnet, chromite, zircon, and other accessory minerals must not be present. Chromium, for example, must not be present, even in extremely small amounts, in order for the sand to be acceptable to certain markets. Feldspars and mica are also objectionable. Generally, iron content must be reduced to 0.030% Fe2O3 or less.
Silica sand for making glass, pottery and ceramics must meet rigid specifications and generally standard washing schemes are inadequate for meeting these requirements. Sand for the glass industry must contain not more than 0.03% Fe2O3. Concentrating tables will remove free iron particles but iron stained and middling particles escape gravity methods. Flotation has been very successfully applied in the industry for making very low iron glass sand suitable even for optical requirements.Sub-A Flotation Machines are extensively used in this industry for they give the selectivity desired and are constructed to withstand the corrosive pulp conditions normally encountered (acid circuits) and also the abrasive action of the coarse, granular, slime free washed sand.
The flowsheet illustrates the more common methods of sand beneficiation. Silica may be obtained from sandstone, dry sand deposits and wet sand deposits. Special materials handling methods are applicable in each case.
The silica bearing sandstone must be mined or quarried much in the manner for handling hard rock. The mined ore is reduced by a Jaw Crusher to about 1 size for the average small tonnage operation. For larger scale operations two-stage crushing is advisable.
The crushed ore is reduced to natural sand grain size by Rod Milling. Generally, one pass treatment through the Rod Mill is sufficient. Grinding is done wet at dilutions in excess of normal grinding practice. A Spiral Screen fitted to the mill discharge removes the plus 20 mesh oversize which either goes to waste or is conveyed back to the mill feed for retreatment.
Sand from such deposits is generally loaded into trucks and transported dry to the mill receiving bin. It is then fed on to a vibrating screen with sufficient water to wash the sand through the 20 mesh stainless screen cloth. Water sprays further wash the oversize which goes to waste or for other use. The minus 20 mesh is the product going to further treatment.
The sand and water slurry for one of the three fore-mentioned methods is classified or dewatered. This may be conveniently done by cyclones or by mechanical dewatering classifiers such as the drag, screw, or rake classifiers.
From classification the sand, at 70 to 75% solids, is introduced into a Attrition Scrubber for removal of surface stain from the sand grains. This is done by actual rubbing of the wet sand grains, one against another, in an intensely agitated high density pulp. Most of the work is done among the sand grains not against the rotating propellers.
For this service rubber covered turbine type propellers of special design and pitch are used. Peripheral speed is relatively low, but it is necessary to introduce sufficient power to keep the entire mass in violent movement without any lost motion or splash. The degree of surface filming and iron oxide stain will determine the retention time required in the Scrubber.
The scrubbed sand from the Attrition Machine is diluted with water to 25-30% solids and pumped to a second set of cyclones for further desliming and removal of slimes released in the scrubber. In some cases the sand at this point is down to the required iron oxide specifications by scrubbing only. In this case, the cyclone or classifier sand product becomes final product.
Deslimed sand containing mica, feldspar, and iron bearing heavy minerals can be successfully cleaned to specifications by Sub-A Flotation. Generally this is done in an acid pulp circuit. Conditioning with H2SO4 and iron promoting reagents is most effective at high density, 70-75% solids. To minimize conditioning and assure proper reagentizing a two-stage Heavy Duty Open Conditioner with Rubber Covered Turbine Propellers is used. This unit has two tanks and mechanisms driven from one motor.
The conditioned pulp is diluted with water to 25-30% solids and fed to a Sub-A Flotation Machine especially designed for handling the abrasive, slime free sand. Acid proof construction in most cases is necessary as the pulps may be corrosive from the presence of sulfuric acid. A pH of 2.5-3.0 is common. Wood construction with molded rubber and 304 or 316 stainless steel are the usual materials of construction. In the flotation step the impurity minerals are floated off in a froth product which is diverted to waste. The clean, contaminent-free silica sand discharges from the end of the machine.
The flotation tailing product at 25 to 30% solids contains the clean silica sand. A SRL Pump delivers it to a Dewatering Classifier for final dewatering. A mechanical classifier is generally preferable for this step as the sand can be dewatered down to 15 to 20% moisture content for belt conveying to stock pile or drainage bins. In some cases the sand is pumped directly to drainage bins but in such cases it would be preferable to place a cyclone in the circuit to eliminate the bulk of the water. Sand filters of top feed or horizontal pan design may also be used for more complete water removal on a continuous basis.
Dry grinding to minus 100 or minus 200 mesh is done in Mills with silica or ceramic lining and using flint pebbles or high density ceramic or porcelain balls. This avoids any iron contamination from the grinding media.
In some cases it may be necessary to place high intensity magnetic separators in the circuit ahead of the grinding mill to remove last traces of iron which may escape removal in the wet treatment scrubbing and flotation steps. Iron scale and foreign iron particles are also removed by the magnetic separator.
In general most silica sands can be beneficiated to acceptable specifications by the flowsheet illustrated. Reagent cost for flotation is low, being in the order of 5 to 10 cents per ton of sand treated. If feldspars and mica must also be removed, reagent costs may approach a maximum of 50 cents per ton.
Laboratory test work is advisable to determine the exact treatment steps necessary. Often, attrition scrubbing and desliming will produce very low iron silica sand suitable for the glass trade. Complete batch and pilot plant test facilities are available to test your sand and determine the exact size of equipment required and the most economical reagent combinations.
Silica sand for making glass, pottery and ceramics must meet rigid specifications and generally standard washing schemes are inadequate for meeting these requirements. Sand for the glass industry must contain not more than 0.03% Fe2O3. Concentrating tables will remove free iron particles but iron stained and middling particles escape gravity methods. Flotation has been very successfully applied in the industry for making very low iron glass sand suitable even for optical requirements.
Sub-A Flotation Machines are extensively used in this industry for they give the selectivity desired and are constructed to withstand the corrosive pulp conditions normally encountered (acid circuits) and also the abrasive action of the coarse, granular, slime free washed sand.
The flowsheet illustrated is typical for production of glasssand by flotation. Generally large tonnages are treated, forexample, 30 to 60 tons per hour. Most sand deposits can be handled by means of a dredge and the sand pumped to the treatment plant. Sandstone deposits are also being treated and may require elaborate mining methods, aerial tramways, crushers, and wet grinding. Rod Mills with grate discharges serve for wet grinding to reduce the crushed sandstone to the particle size before the sand grains were cementedtogether in the deposit. Rod milling is replacing the older conventional grinding systems such as edge runner wet mills or Chilean type mills.
Silica sand pumped from the pit is passed over a screen, either stationary, revolving or vibrating type, to remove tramp oversize. The screen undersize is washed and dewatered generally in a spiral type classifier. Sometimes cone, centrifugal and rake type classifiers may also be used for this service. To clean the sand grains it may be necessary to thoroughly scrub the sand in a heavy-duty sand scrubber similar to the Heavy-duty Agitator used for foundry sand scrubbing. This unit is placed ahead of the washing and dewatering step when required. The overflow from the classifier containing the excess water and slimes is considered a waste product. Thickening of the wastes for water reclamation and tailings disposal in some areas may be necessary.
The washed and dewatered sand from the spiral-type classifier is conveyed to a storage bin ahead of the flotation section. It is very important to provide a steady feed to flotation as dilution, reagents and time control determines the efficiency of the process.
Feeding wet sand out of a storage bin at a uniform rate presents a materials handling problem. In some cases the sand can be uniformly fed by means of a belt or vibrating-type feeder. Vibrators on the storage bin may also be necessary to insure uniform movement of the sand to the feeder. In some cases the wet sand is removed from the bin by hydraulic means and pumped to a spiral-type classifier for further dewatering before being conveyed to the next step in the flowsheet.
Conditioning of the sand with reagents is the most critical step in the process. Generally, for greater efficiency, it is necessary to condition at maximum density. It is for this reason the sand must be delivered to the agitators or conditioners with a minimum amount of moisture. High density conditioning at 70 to 75% solids is usually necessary for efficient reagentizing of the impurity minerals so they will float readily when introduced into the flotation machine.
The Heavy-duty Duplex Open-type Conditioner previously developed for phosphate, feldspar, ilmenite, and other non-metallic mineral flotation is ideal for this application. A duplex unit is necessary to provide the proper contact time. Circular wood tanks are used to withstand the acid pulp conditions and the conditioner shafts and propellers are rubber covered for both the abrasive and corrosive action of the sand and reagents.
Reagents are added to the conditioners, part to the first and the balance to the second tank of the duplex unit, generally for flotation of impurities from silica sand. These reagents are fuel oil, sulphuric acid, pine oil, and a petroleum sulfonate. This is on the basis that the impurities are primarily oxides. If iron is present in sulphide form, then a xanthate reagent is necessary to properly activate and float it. The pulp is usually regulated with sulfuric acid to give a pH of 2.5-3.0 for best results through flotation.
A low reagent cost is necessary because of the low value of the clean sand product. It is also necessary to select a combination of reagents which will float a minimum amount of sand in the impurity product. It is desirable to keep the weight recovery in the clean sand product over 95%. Fatty acid reagents and some of the amines have a tendency to float too much of the sand along with the impurities and are therefore usually avoided.
After proper reagentizing at 70 to 75% solids the pulp is diluted to 25 to 30% solids and introduced into the flotation machine for removal of impurities in the froth product. Thepulp is acid, pH 2 .5 to 3.0 and the sand, being granular and slime free, is rapid settling so a definite handling problem is encountered through flotation.
The Sub-A Flotation Machine has been very successful for silica sand flotation because it will efficiently handle the fast settling sand and move it along from cell to cell positively. Aeration, agitation and selectivity due to the quiet upper zone can be carefully regulated to produce the desired separation. The machine is constructed with a wood tank and molded rubber wearing parts to withstand the corrosive action of the acid pulp. Molded rubber conical-type impellers are preferred for this service when handling a coarse, granular, abrasive sand.
Flotation contact time for removal of impurities is usually short. A 4, and preferably a 6 cell, machine is advisable. Cell to cell pulp level control is also desirable. A 6 cell No. 24 (43 x 43) Sub-A Flotation Machine in most cases is adequate for handling 25 to 30 tons of sand per hour. If the impurities are in sulphide form a standard machine with steel tank and molded rubber parts is adequate provided the pulp is not acid. Otherwise acid proof construction is essential.
The flotation tailing product is the clean sand discharging from the end of the flotation machine at 25 to 30% solids and must be dewatered before further processing. Dewatering can be accomplished in a dewatering classifier and then sent to storage or drying. Top feed or horizontal vacuum filters are often used to remove moisture ahead of the dryer. Dry grinding of the sand to meet market requirements for ceramic and pottery use is also a part of the flowsheet in certain cases.
This particular sand was all minus 20 mesh with only a trace minus 200 mesh and 70% plus 65 mesh. Iron impurity was present as oxide and stained silica grains. The plant which was installed as a result of this test work is consistently making over a 95% weight recovery and a product with not over 0.02% Fe2O3 which at times goes as low as 0.01% Fe2O3.
Si02, minimum..99.8 per cent Al2O3, maximum..0.1 percent Fe2O3, maximum..0.02 per cent CaO + MgO, maximum.0.1 percent For certain markets, a maximum of 0.030 per cent Fe2O3 is acceptable.
Natural silica-sand deposits generally contain impurityminerals such as clay, mica, and iron oxide and heavy iron minerals which are not sufficiently removed by washing and gravity concentration. Flotation is often used to remove these impurity minerals to meet market specifications.
Anionic-type reagents, such as fatty acids, are used to float some impurities in alkaline pulp. Cationic-type reagents such as amines or amine acetates are also used with inhibitors such as sulphuric or hydrofluoric acids to float certain impurity minerals and depress the silica.
Thailand has plenty of river sand resource which is high quality of silica sand, upto 99.6% SiO2. In the northest, the river sand had been proved that the high iron contaimination Fe2O3 upto 0.165% can be lowered down to 0.065% by high gradient magnetic separation technology.
Recycling aluminum refers to the scrap aluminum as the main raw material to obtain aluminum alloy after pretreatment, smelting, refining, and ingot casting. Aluminum has features of strong corrosion resistance, low loss during use, and will not lose its basic characteristics after repeated recycling for many times, and has extremely high recycling value.
Wet magnetic separation is widely used in the purification of quartz sand, which has the characteristics of significant iron removal effect, large handling capacity and no dust pollution. In the primary stage of quartz sand purification, wet magnetic separation is generally considered to be an excellent way of iron removal purification, but in the stage of high-purity quartz cleaning, the conventional wet magnetic separation purification effect is not obvious, the reasons can be summarized as three points.
LONGi magentic separator bring hot sales, recently,RCBD flame-proof electromagnetic separator in addition with excellent iron removel performance, excellent heat dissipation efficiency and perfect service guarantee ability successfully won the bid for the domestic leading coal enterprises, a total of 39 sets, lay a good foundation for the market follow-up development.
The Sand Separator is a sturdy, pre-engineered, pressure vessel designed to separate and remove sand and other sediments from natural gas and liquid wellstreams.Protect your equipment and maximize production time with our first-class sand separator that helps prevent erosion, plugging and other problems associated with sand and sediment in wellstreams.
As the wellstream enters the vessel, its velocity is reduced by a deflector to facilitate content separation. The slowed stream contacts the impingement plate, which redirects the liquid and gas to the wellstream outlet of the vessel. Gravity forces the particulate to descend and collect at the bottom of the vessel.
The hydrocarbon stream is now free of heavy particulate and ready for further processing without damaging or plugging downstream production equipment. The captured sand and sediment are regularly discharged via the outlet drain on the bottom of the vessel.
One practical application of chemistry is that it can be used to help separate one substance from another. The reasons materials may be separated from each other is because there is some difference between them, such as size (separating rocks from sand), state of matter (separating water from ice), solubility, electrical charge, or melting point.
Another physical separation method is based on the different densities of salt and sand. The density of salt is2.16g/cm while the density of sand is 2.65g/cm. In other words, sand is slightly heavier than salt. If you shake a pan of salt and sand, the salt will eventually rise to the top. A similar method is used to pan for gold, since gold has a higher density than most other substances and sinks in a mixture.
One method of separating salt and sand is based on solubility. If a substance is soluble, it means it dissolves in a solvent.Salt(sodium chloride or NaCl) is an ionic compound that is soluble in water. Sand (mostly silicon dioxide) is not.
Another method to separate components of a mixture is based on melting point. The melting point of salt is 1474F (801C), while that of sand is3110F (1710C). Salt becomes molten at a lower temperature than sand. To separate the components, a mixture of salt and sand is heated above801C, yet below1710C. The molten salt may be poured off, leaving the sand.Usually, this is not the most practical method of separation because both temperatures are very high. While the collected salt would be pure, some liquid salt would contaminate the sand, like trying to separate sand from water by pouring off water.
Note, you could have simply let the water evaporate from the pan until you were left with the salt. If you had chosen to evaporate the water, one way you could have sped up the process would have been to pour the salt water into a large, shallow container. The increased surface area would have exchanged the rate at which water vapor could have entered air.
The salt did not boil away with the water. This is because the boiling point of salt is much higher than that of water. The difference between boiling points can be used to purify water via distillation. In distillation, the water is boiled, but is then cooled so it will condense from vapor back into water and can be collected. Boiling water separates it from salt and other compounds, like sugar, but it has to be carefully controlled to separate it from chemicals that have lower or similar boiling points.
While this technique can be used to separate salt and water or sugar and water, it would not separate the salt and sugar from a mixture of salt, sugar, and water. Can you think of a way to separate sugar and salt?
The purification of quartz sand is very difficult, mainly because it contains some impurity minerals, some of which containing iron elements, such as goethite, hematite, limonite, ilmenite, pyrrhotite, tourmaline, amphibole, biotite and so on.
These impurities greatly reduced the use-value of quartz sand, so the removal of iron from quartz sand is very important. The following introduces 7 methods and equipment for removing iron from quartz sand.
Gravity separation can usually be used effectively for the entire particle size range of quartz sand. When the iron in quartz sand is mainly in the form of heavy minerals (relative density > 2.9), gravity selection should be considered firstly. But gravity separation is difficult for mixed particles, flaky particles, light mineral particles and medium-density minerals.
Spiral chute gravity separation can be used when the material contains a particularly small amount of heavy mineral impurities (such as zircon). The greater the specific gravity difference of minerals, the higher the degree of separation.
When the spiral chute is used for beneficiation, the quartz mortar can be divided into three parts: granular heavy mineral area, granular quartz sand area, flaky and light quartz sand area. In this way, not only the heavy minerals in quartz sand can be removed by the spiral chute, but the mica minerals can also be removed partially.
Quartz, the main mineral in quartz sand, is a diamagnetic substance that cannot be magnetized in a magnetic field. The iron-containing impurity minerals in quartz sand, such as hematite, limonite, magnetite, goethite, etc., are mostly magnetic.
The quartz sand flotation method mainly removes iron-containing mineral impurities such as mica, feldspar, garnet and amphibole. A three-stage flotation process is used to remove iron-containing argillaceous, mica and feldspar minerals from quartz sand respectively.
If the finished quartz sand is reddish, and the iron and titanium content does not meet the product quality requirements, the acid leaching method can be used. Wash the quartz sand with water to remove powder and impurities, then carry out acid leaching before drying it.
Quartz sand acid leaching method (chemical treatment) has good iron removal effect, but the cost is higher, the technical requirements are stricter, and it is harmful to the environment. However, in order to obtain higher purity quartz sand, this chemical method will inevitably be used in the future.
Stirring and scrubbing are accomplished by friction between particles caused by violent agitation of the blades. However, since iron oxide films are thin and strong, this method is unlikely to remove them. If necessary, chemical reagents can be added.
Ultrasonic iron removal is mainly to remove the secondary iron film on the surface of the particles. When treated with ultrasonic technology for 10 min, its iron removal rate can generally reach 46% to 70%. In order to improve the effect of ultrasonic cleaning, a small number of reagents (such as sodium carbonate) and surfactants (such as water glass) can be added.
Ultrasonic iron removal is currently relatively expensive for the beneficiation of quartz sand, and it is still difficult to apply in large-scale concentrators, but for those who require high purity, low production is possible.
Microbial leaching of thin-film iron or immersion iron on the surface of quartz sand particles is a new technology for iron removal, which is currently in the research stage of laboratory and small-scale experiments.
As a leading mining machinery manufacturer and exporter in China, we are always here to provide you with high quality products and better services. Welcome to contact us through one of the following ways or visit our company and factories.
Based on the high quality and complete after-sales service, our products have been exported to more than 120 countries and regions. Fote Machinery has been the choice of more than 200,000 customers.
You must have cookies enabled to login Refresh (When Cookies Enabled)
Sand is considered the Gold Standard for bedding cows, however unless fully recovered it takes up volume in your slurry lagoon/storage tank, its difficult to move and dramatically increases wear on your slurry handling system. Our sand separation systems are designed to separate sand from sand laden slurry for reuse as clean bedding. The company is also developing a solution for removing microplastics from sand.5 Key Players Advancing Solutions to Diminish Microplastic Pollution
CLAIMUnknownn/aCLAIM will power 5 new marine cleaning technologies, to innovate the ways in which we clean our seas and oceans. Data modelling will produce maps of concentrations of macro and micro litter, while ecosystem service approaches will identify areas where intervention has the greatest potential to secure impact on human well-being.
SimConDrillGermanyn/aMicroplastics are discharged into our wastewater and the environment every day. Thus far wastewater treatment plants are not able to sufficiently reduce microplastics. Therefore our focus is on the development of a filter that is ready for serial production, which enables the filtration of particles down to 0.01mm (this equals the thickness of household aluminium foil) based on the patented cyclone filter. Due to its special technology, this filter is clogging and maintenance-free and not a disposable filter. Once the prototype has been built, it will be tested in a treatment plant using real wastewater.
GuppyfriendGermanyPrivateThe Guppyfriend Washing Bag is a patented filter solution that minimizes fiber shedding, collects the fibers that do break during the wash, and extends the life span of your clothes. Simply collect the plastic fibers from the bag after each wash and dispose of them correctly.
PlanetCareUnited KingdomPrivatePlanetCare is developing a microfiber filter to be integrated in washing machines that can capture microplastics before they are released in wastewater. PlanetCare filters are specifically designed to catch fibres shed from textiles and clothes during washing and drying. The thickness and the length of shed fibres primarily depend on the structure and composition of the textile but also on washing /drying conditions (e.g. machine used, program, temperature, detergent, load etc.) In general, fibres have thicknesses of 10 micrometres or more and a very broad range of lengths.
PHOENIXUSAPrivateThe PHOENIX commitment is to superior service and technology at the greatest savings for our client. PHOENIX Process Equipment Company designs and manufactures a variety of high quality systems for sand processing; fine particle wet classification and separation; slurry and sludge thickening and dewatering; effluent water treatment; and greywater/blackwater purification and recycling for commercial and multi-residence applications.
Kids Bee HappyUnited KingdomPrivateKids Bee Happy is a low cost childrens entertainment franchise providing Magic Sand Painting to boys and girls all over the UK. With 25 franchisees covering from Aberdeen to Torquay.
Every dairy faces challenges when it comes to managing manure. McLanahans bedding solutions for the agricultural industry help dairy producers minimize these challenges by providing equipment for transferring, separating, dewatering and drying their manure and sand bedding.
Sand bedding provides a healthy environment for the cows, keeps them cleaner and maximizes cow comfort, all of which enhance a dairys profitability. However, when that sand is mixed with manure, it becomes abrasive, difficult to agitate and pump, and expensive to land apply. Sand can also clog pipes and settle in manure storage areas, both resulting in costly cleanouts
McLanahan Sand-Manure Separation Systems utilize proven sand-processing technology to separate sand from the manure stream, producing a clean, recycled sand that is suitable for reuse within days and eliminating the need to regularly purchase sand to refill freestalls. Separating sand from manure also results in less costly storage cleanouts.
McLanahan Sand-Manure Separation Systems are also designed to achieve sufficient sand recovery to enable manure waste to be processed through anaerobic digesters, as well as other treatment systems requiring high sand recovery.
McLanahan can help dairies meet environmental regulations for land application of manure and produce relatively clean flume or process water with manure separation equipment. Manure separation equipment helps the dairy producer more effectively manage manure and nutrients by removing a portion of the undigested fibers from a dairys manure stream and producing a more nutrient dense material to land apply. In addition to its ability to thicken manure, manure separation equipment pre-treats the manure for use in an anaerobic digester.
McLanahan provides equipment for both sand and manure dewatering. Dewatering Screens are used with sand separation systems to reduce the amount of water and small organics and quickly provide producers with cleaner sand that can be reused with minimal conditioning. Roll Presses are used to dewater separated manure fibers, which can be used for bedding, stored or economically hauled to distant fields.
McLanahan specializes in heavy-duty manure auger conveyance systems to move manure across freestall barns, clean out sand settling lanes, fill manure tankers or spreaders, and stack manure solids. Each dairys specific needs are taken into account when designing a manure conveyance system to ensure the best fit for their operation.
The Sand Bedding Dryer and Manure Bedding Dryer improve the quality of both recycled sand and manure solids. Bedding Dryers reduce the amount of moisture and mastitis-causing pathogens in recycled sand or manure solids by heating the bedding to high temperatures and retaining it just long enough to achieve maximum pathogen kill. The result is a cleaner, drier bedding that increases milk production, lowers somatic cell count and improves cow health. The bedding can be used immediately following its discharge from a Bedding Dryer, which means less handling and stockpiling, and less inventory.
Cows need to be clean and comfortable in order to stay healthy and produce large quantities of milk. Full, evenly distributed beds of sand are essential to cow comfort. McLanahan offers a simple and smart solution to sand bedding with our line stall maintenance equipment. Stall Fillers and Stall Groomers help dairy producers achieve and maintain full, dry and even beds of sand.
Stall Fillers can be mounted on either trucks or trailers, and evenly distribute sand bedding into freestalls. Stall Groomers keep freestalls in great condition between fillings, ensuring cows are comfortable throughout the day.
McLanahans Sand Lane System clean and dewater sand from sand lanes or settling systems. Consisting of a hopper that can be fed easily with a front-end loader, an Inclined Auger and a Dewatering Screen, the Sand Lane System provides the dairy producer with a cleaner, drier sand product without adding water. It also saves the producer money by reducing sand inventory and drying times.
Bedding can be recovered and recycled in many different ways from closed-loop to flush systems. McLanahan works with each dairy to design a complete system for manure handling. Sand Separation Systems give the dairy producer the ability to recover sand and reuse it within days, while Manure-Solid Separation Systems separate the manure fibers from the liquid to lower hauling costs. Both of these systems can utilize Bedding Dryers to remove moisture and kill pathogens, making for healthier cows and higher production rates. McLanahan Manure Management Systems solutions are available to meet both large and small herds, as well as fit into the dairy producers facility management routines.
McLanahan was the first company to introduce mechanical sand separation, dewatering and drying to the dairy industry. We took our mining-duty, field-proven equipment and applied it to recycling sand bedding. These systems reduce costs by eliminating the need to regularly purchase sand bedding to refill freestalls, while also improving overall herd health with lower moisture content. Removing sand from the manure stream also means that manure can be stored, pumped, land applied or anaerobically digested. After sand-manure separation, manure fibers can also be removed from liquids with equipment such as the McLanahan Liquid-Solid Separator and the McLanahan Roll Press. Both sand and manure solids can be further dried to immediately reusable bedding through McLanahan Bedding Dryers.
Each of these solutions can be fit to dairies of all sizes. Learn more on the individual product pages about creating a healthier, cleaner environment for your dairy with McLanahans bedding management solutions.
A variety of sand separation and cleaning technologies have been utilized to separate and clean sand previously used for freestall bedding. These techniques rely on gravity, centrifugal forces, or potentially a combination of the two to differentiate sand from water and other particles in the manure. Its fairly common that a properly designed sand separation system can recover up to 90% or more of the bedding sand from the manure. This recovered bedding sand contains varying amounts of moisture and is usually stacked and allowed to dewater for weeks or months before its reintroduced into the stalls. During this time, money remains tied up in sand inventory.
Sand-Manure Separators are the heart of the McLanahan SandManure separation systems. They are used to settle out and wash bedding sand, and can be set up in multiple ways depending on the type of manure conveyance system on the dairy. In some cases, the sand-laden manure from the alleys is loaded directly into the Sand-Manure Separators, where bedding sand is settled out and washed. On a dairy where flush water is used to move the manure and sand bedding, the Sand-Manure Separator is used to wash the sand after it has been settled out either in a McLanahan Channel System or scooped from a sand lane. In all cases, the Sand-Manure Separator produces a clean, reusable sand bedding product with minimal organic content, suitable for reuse as recycled sand bedding.
McLanahan offers the most complete line of sand and manure processing equipment designed specifically to meet the needs of sand bedded dairies. We were the ones to pioneer mechanical sand separation and make it economical for dairy farmers, and we still lead the way with multiple different sand separation solutions for dairies.
The patented Sand-Manure Separator is the workhorse within the sand separation system. The design of this machine began with McLanahan's extensive knowledge and experience working in the aggregate and mining industries. This knowledge was used to develop a Sand-Manure Separator that will last a long time under harsh, abrasive working environments and can be easily serviced with minimal downtime. It uses the same double-sealed lower bearing assembly as used in the aggregate industry to support the screw shaft. Urethane flighting offers the highest level of abrasion protection available and can be replaced when necessary. A unique overflow weir system retains the highest level of sand in the machine while removing fibers, manure and water to create a high-quality sand product.
Sand-Manure Separators are available in several different sizes, depending on the herd size, required hours of operation and system type. McLanahan employs a technical team of experts who specialize in working with dairies and helping them come up with the most efficient and economical sand separation system for their dairy.
The McLanahan Sand-Manure Separator is provided as part of a larger sand separation and washing system. The operation of the Sand-Manure Separator depends on the type of system into which it has been installed.
Yes, you should use a readily available, washed concrete sand because it meets particle size requirements. Consult this chart to determine if your sand falls within this particle range. If you need additional guidance, call your supplier or contact us to analyze your sand in our lab.
This depends on several different factors. One of the most important factors is the sand type. Using a washed concrete sand is the most important step in achieving high recovery. Other factors include proper system management and the quality of your recycled (dilution) water. Its common to achieve more than 90% sand recovery with the properly designed and managed sand separation system.
Generally speaking, fresh water is only added into the separation process at the spray bar for rinsing the sand. These amounts vary, but the average usage per machine can be found in this chart. In some Sand Lane Systems, fresh water is added to the washerbox for cleaning the sand. In these cases, the fresh water usage can be as high as 200 gpm but is used only for short periods of time.
A Sand-Manure Separator requires a relatively small amount of power compared to the other parts of a manure management system. To see how much horsepower it requires and how it compares to other equipment in a manure system, click here.
Cows spend about 12-14 hours per day lying down. This means 12-14 hours with their teat ends potentially exposed to harmful bacteria in the bedding. Managing bedding to reduce or eliminate this bacteria is an important part of any dairys stall management routine. Whether you have an existing dairy or are planning to build a new one, McLanahan is ready to help you make an informed decision about your manure system and better manage your bedding.
Vibratory screening equipment is used to screen or classify wet or dry materials, like wet ash or dry frac sand, into multiple grades by particle size. They are also used to dewater or dry waste material before disposal. This type of high frequency vibrating equipment only drives the rectangular polyurethane screen panel, while the frame remains fixed. High capacity screening equipment can screen or classify material ranging in sizes from 1/8 inch (3mm) down to 325 mesh.
The Derrick Stack Sizer is a high capacity, multiple deck, wet screening machine capable of high capacity wet screening in a small footprint. A single slurry input is equally divided in a Derrick flow divider prior to the Stack Sizer. Each screening deck then makes a particle size separation on the Derrick Polyweb Urethane screen surfaces. The undersized fraction is collected from all decks in a common manifold to a single discharge. The oversize fraction is collected in the large hopper and discharged to a common point.
Dewater and recover fines from aggregate and sand processing wastewater WITHOUT the use of expensive polymers or chemicals. With many installations throughout North America, the Derrick Fines Recovery System is proven successful in the field and continues to lead the way for the aggregate industry.
Derrick MP screen panels are constructed from a special high temperature polyurethane material. They are a direct replacement for the traditional wire mesh panels currently used in the Rotex MegaTex screeners. These panels have a tapered opening to greatly reduce blinding issues commonly experienced with wire mesh panels. Because of the reduced blinding, the screen production rate can be increased over wire mesh panels. Typical life span is greater than 6 months. Urethane screen panel sizes are available for typical frac sand production.
High capacity wet screening and dewatering equipment provides a wide range of sizing and classification tasks. Wet screening equipment efficiently screens out fines and classifies oversize particles. Dewatering units have proven throughput of up to 300 TPH (tons per hour) and are designed to maximize solids recovery and minimize wastewater.
The Derrick Stack Sizer is a high capacity, multiple deck, wet screening machine capable of high capacity wet screening in a small footprint. A single slurry input is equally divided in a Derrick flow divider prior to the Stack Sizer. Each screening deck then makes a particle size separation on the Derrick Poly Web Urethane screen surfaces. The undersized fraction is collected from all decks in a common manifold to a single discharge. The oversize fraction is collected in the large hopper and discharged to a common point.
The Derrick SuperStack provides high capacity, high efficiency separation of fine wet particles. The eight screening decks operate in parallel and include a front-to-back tensioning system that increase the screening capacity up to 3 times that of the best fine screens currently available.
The Derrick HI-G Dewatering Machine is designed to maximize fines separation and recovery and provide drying capabilities to a wet screening and dewatering system. Powered by twin electromechanical 2.5 horsepower Super G vibratory motors, this units rotary speed (1750 RPM) and stroke length (019 in.) combine to create 7.3 Gs of screen surface acceleration. Water and fine solid separation are conducted efficiently, with component parts designed for maintenance-free operation.
This high-capacity wet screening and dewatering equipment is designed to dewater up to 300 TPH (Tons Per Hour) of primary sand products, delivering high-quality production sands (asphalt, concrete, mason, and others). Each unit houses over 62 square feet of screen surface area, of which nearly half is open area, resulting in an efficient and high-volume dewatering capacity.
Linear motion screens are designed for solids recovery, dewatering, and dilute slurries with low quantities of oversize. These screens are a versatile addition to a variety of wet screening and dewatering processes and are ideal for compact working spaces, with its low headroom requirements and high screening capacity. They efficiently purify viscous slurries, removing grit and other small-particle contaminants.
The screen frame can be angled from +10 to -15, with highest fluid capacity when locked into an uphill position. The equipment's linear motion conveys oversize materials out of the pool efficiently, discharging them into a dewatering process area.
The Repulp Screen efficiently screens out fines and undersize particles, resulting in clean and consistent oversize material. Spray nozzles are focused upon rubber-lined wash troughs (instead of being focused directly on screen surface), reducing wear and providing evenly distributed fluidization. Vibrating motors feature sealed bearings that are permanently lubricated and require minimal maintenance.
These machines feature multiple stages of screening and repulping, resulting in the highest rate of undersize particle removal possible. Repulp screens can be equipped with a split undersize hopper, allowing for a variety of separation sizes, and cut points.
The High Shear Screen effectively processes clay slurries. While traditional wet screening and dewatering machines feature a low plane of incline (resulting in bridging and blockage issues with platy minerals found in clay), High Shear Screens are set to a 45 degree panel angle. The result is a screening solution that can handle difficult slurries and platy minerals.
The Multifeed wet sizing screen is made up of three independent screening machines that provide three times the effective width of a conventional screen, mounted in a single frame and driven by one vibrating motor. The three separate feed streams are divided equally through a flow divider system located on the machine.
The dry screening equipment featured below use high speed, low amplitude, and vertical elliptical motion to screen dry materials such as sand, iron powder, nickel powder, polyethylene pellets, coal, glass, and many other materials. These machines produce low amounts of sound and are fully enclosed for dust suppression. Light-weight screen panels and hinged and clamped covers provide easy screen inspection, removal, and installation.
The Front-to-Back (FTB) dry screening machine provides increased screening capacity, improved efficiency, and extremely fast screen panel changes. Customers using the FTB machine report screening capacity increases up to 50% with improved efficiencies in products ranging in size from 0.25 inch (6.35mm) down to 400 mesh (38 m).
These dry screening machines have been in use for over 60 years in the industrial minerals industry. They utilize a true linear motion to achieve higher screening capacities with smaller floor footprints. Screen pellets, powders, sand, crushed glass, coal, and many other types of materials that require fine screening.