CTG series of permanent magnet dry magnetic separator is the newly developed high-performance processing equipment can be widely used in metallurgy, mining and other industries. The device has characteristics of commotion magnetic field and high separation factor, advanced structure, light weight, reliable operation and easy maintenance.
The Magnetic Separator is suitable for wet magnetic separation of materials less than 3 mm such as magnetite, magnetic pyrite, baking ore, etc. It also can be used for removing Fe procession of coal, nonmetallic mineral and construction materials. The machine works under the magnetic force and machine force and can separate raw materials with different magnetic intensity. And it has advantages of high capacity, easy operation and simple structure.
SINOSUN Groups products are mainly classified as: Stone Crushers & Screens, Mobile Crusher & Screening, Stationary Crusher & Screening and Mining Machinery.For detail product information, please click the following Product Catalog.
Luoyang Zhongde Heavy Industries Co., Ltd. is a hi-tech, engineering group with more than 40 years of experience. We are specialized in the research, development, and production of industrial crushing, powder grinding, mineral processing equipments, cement making and other related devices. Our products have been sold to more than 160 countries and areas of Southeast Asia, East Europe, South America, the Middle East and Africa etc, and more foreign markets will be promoted in future.
According to its name, the mobile construction waste grinder producing 200 tons is a kind of mobile crushing machine whose output is about 200 tons when used for construction waste recycling and treatment. It can be called as the mobile crushing station of construction waste or mobile construction waste grinder according to different local habits.
Sand and gravel aggregate as important building material, because of the sandstone are high hardness, particle size and its uneven grain type, therefore must after crusher to appropriate size, can be put into production process, the production line in the sand and gravel aggregate, cone crusher is commonly used as an important equipment of sand and gravel aggregate crushing.
Compared with the permanent magnet dry magnetic separator, the electromagnetic dry magnetic separator can achieve higher magnetic intensity, and can adjust the current to change the size of magnetic intensity to meet the requirements of different mineral separation.
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There are many types of iron separation equipment. Magnetic separator is a kind of iron separation equipment designed according to the different magnetic properties in the ore. The iron beneficiation equipment of magnetic beneficiation has good beneficiation effect and is the first choice of most mine manufacturers. The magnetic separator of Prominer Shanghai Machinery Technology Co., Ltd. has a complete range of models, specifications, and styles. It is an ideal manufacturer of your iron separator equipment. Welcome to visit and inspect. Working principle of iron dressing equipment:
The mined magnetite ore is initially crushed by a crusher, and after crushing to a reasonable fineness, it is evenly sent to the ball mill through a hoist and a vibrating feeder, and then the ore is crushed and ground. The ore fines ground by the ball mill enter the next process: classification. The magnetic separator of the magnetic separator manufacturer uses the principle of different magnetic differences of solid particles to magnetically separate and classify the ore mixture. The mineral particles are fed into the magnetic separator, and the desired iron minerals are separated from other impurities according to the magnetic difference of different mineral properties.
Magnetite iron separation is divided into dry separation magnetic separator and water separation magnetic separator. The main purpose is magnetic separation of iron powder. Some weakly magnetic minerals can also be magnetically separated. Among them, mines and sand fields are widely used. The main requirements for the magnetic separation of the magnetic iron contained in it are to improve the grade and increase the output. The river sand magnetic separator meets this demand. It is divided into a feeding system, a screening system and a magnetic separation system. The bottom is a movable hull. Easy to use. If you need to move, just drag it with the loader.
The magnetite iron magnetic separator can use two magnetic separators at the same time. The first water separator magnetic separator recovers coarse iron powder with a grade of 30-40. The second magnetic separator is used to select iron powder. In use, after grinding the ore with a conical energy-saving ball mill, it is sorted by a magnetic separator to obtain an iron concentrate with a grade of over 63%.
The equipment is designed for energy conservation and environmental protection, with the advantages of small investment and quick results. The magnetite ferromagnetic separator is equipped with a vibrating screen and a conveying device, and the forklift loads the material along with the mining. It is mainly suitable for arid areas and deserts, Gobi deserts and other areas; sand pumps can also be used to feed materials and radiate sand mining radius Up to 50-100 meters, it can also be installed on sand mining boats, rivers, beaches, beaches, sand piles, etc., and can be dragged and hoisted at any time without fixing. It can process more than 90-150 cubic meters of raw materials per hour.
Prominer has been devoted to mineral processing industry for decades and specializes in mineral upgrading and deep processing. With expertise in the fields of mineral project development, mining, test study, engineering, technological processing.
After crushing, grinding, magnetic separation, flotation, and gravity separation, etc., iron is gradually selected from the natural iron ore. The beneficiation process should be as efficient and simple as possible, such as the development of energy-saving equipment, and the best possible results with the most suitable process. In the iron ore beneficiation factory, the equipment investment, production cost, power consumption and steel consumption of crushing and grinding operations often account for the largest proportion. Therefore, the calculation and selection of crushing and grinding equipment and the quality of operation management are to a large extent determine the economic benefits of the beneficiation factory.
There are many types of iron ore, but mainly magnetite (Fe3O4) and hematite (Fe2O3) are used for iron production because magnetite and hematite have higher content of iron and easy to be upgraded to high grade for steel factories.
Due to the deformation of the geological properties, there would be some changes of the characteristics of the raw ore and sometimes magnetite, hematite, limonite as well as other types iron ore and veins are in symbiosis form. So mineralogy study on the forms, characteristics as well as liberation size are necessary before getting into the study of beneficiation technology.
1. Magnetite ore stage grinding-magnetic separation process The stage grinding-magnetic separation process mainly utilizes the characteristics of magnetite that can be enriched under coarse grinding conditions, and at the same time, it can discharge the characteristics of single gangue, reducing the amount of grinding in the next stage. In the process of continuous development and improvement, the process adopts high-efficiency magnetic separation equipment to achieve energy saving and consumption reduction. At present, almost all magnetic separation plants in China use a large-diameter (medium 1 050 mm, medium 1 200 mm, medium 1 500 mm, etc.) permanent magnet magnetic separator to carry out the stage tailing removing process after one stage grinding. The characteristic of permanent magnet large-diameter magnetic separator is that it can effectively separate 3~0mm or 6~0mm, or even 10-0mm coarse-grained magnetite ore, and the yield of removed tails is generally 30.00%~50.00%. The grade is below 8.00%, which creates good conditions for the magnetic separation plant to save energy and increase production.
2.Magnetic separation-fine screen process Gangue conjoined bodies such as magnetite and quartz can be enriched when the particle size and magnetic properties reach a certain range. However, it is easy to form a coarse concatenated mixture in the iron concentrate, which reduces the grade of the iron concentrate. This kind of concentrate is sieved by a fine sieve with corresponding sieve holes, and high-quality iron concentrate can be obtained under the sieve.
There are two methods for gravity separation of hematite. One is coarse-grained gravity separation. The geological grade of the ore deposit is relatively high (about 50%), but the ore body is thinner or has more interlayers. The waste rock is mixed in during mining to dilute the ore. For this kind of ore, only crushing and no-grinding can be used so coarse-grained tailings are discarded through re-election to recover the geological grade.
The other one is fine-grain gravity separation, which mostly deals with the hematite with finer grain size and high magnetic content. After crushing, the ore is ground to separate the mineral monomers, and the fine-grained high-grade concentrate is obtained by gravity separation. However, since most of the weak magnetic iron ore concentrates with strong magnetic separation are not high in grade, and the unit processing capacity of the gravity separation process is relatively low, the combined process of strong magnetic separation and gravity separation is often used, that is, the strong magnetic separation process is used to discard a large amount of unqualified tailings, and then use the gravity separation process to further process the strong magnetic concentrate to improve the concentrate grade.
Due to the complexity, large-scale mixed iron ore and hematite ore adopt stage grinding or continuous grinding, coarse subdivision separation, gravity separation-weak magnetic separation-high gradient magnetic separation-anion reverse flotation process. The characteristics of such process are as follows:
(1) Coarse subdivision separation: For the coarse part, use gravity separation to take out most of the coarse-grained iron concentrate after a stage of grinding. The SLon type high gradient medium magnetic machine removes part of the tailings; the fine part uses the SLon type high gradient strong magnetic separator to further remove the tailings and mud to create good operating conditions for reverse flotation. Due to the superior performance of the SLon-type high-gradient magnetic separator, a higher recovery rate in the whole process is ensured, and the reverse flotation guarantees a higher fine-grained concentrate grade.
(2) A reasonable process for narrow-level selection is realized. In the process of mineral separation, the degree of separation of minerals is not only related to the characteristics of the mineral itself, but also to the specific surface area of the mineral particles. This effect is more prominent in the flotation process. Because in the flotation process, the minimum value of the force between the flotation agent and the mineral and the agent and the bubble is related to the specific surface area of the mineral, and the ratio of the agent to the mineral action area. This makes the factors double affecting the floatability of minerals easily causing minerals with a large specific surface area and relatively difficult to float and minerals with a small specific surface area and relatively easy to float have relatively consistent floatability, and sometimes the former has even better floatability. The realization of the narrow-level beneficiation process can prevent the occurrence of the above-mentioned phenomenon that easily leads to the chaos of the flotation process to a large extent, and improve the beneficiation efficiency.
(3) The combined application of high-gradient strong magnetic separation and anion reverse flotation process achieves the best combination of processes. At present, the weak magnetic iron ore beneficiation plants in China all adopt high-gradient strong magnetic separation-anion reverse flotation process in their technological process. This combination is particularly effective in the beneficiation of weak magnetic iron ore. For high-gradient strong magnetic separation, the effect of improving the grade of concentrate is not obvious. However, it is very effective to rely on high-gradient and strong magnetic separation to provide ideal raw materials for reverse flotation. At the same time, anion reverse flotation is affected by its own process characteristics and is particularly effective for the separation of fine-grained and relatively high-grade materials. The advantages of high-gradient strong magnetic separation and anion reverse flotation technology complement each other, and realize the delicate combination of the beneficiation process.
The key technology innovation of the integrated dry grinding and magnetic separation system is to "replace ball mill grinding with HPGR grinding", and the target is to reduce the cost of ball mill grinding and wet magnetic separation.
HPGRs orhigh-pressure grinding rollshave made broad advances into mining industries. The technology is now widely viewed as a primary milling alternative, and there are several large installations commissioned in recent years. After these developments, anHPGRsbased circuit configuration would often be the base case for certain ore types, such as very hard, abrasive ores.
The wear on a rolls surface is a function of the ores abrasivity. Increasing roll speed or pressure increases wear with a given material. Studs allowing the formation of an autogenous wear layer, edge blocks, and cheek plates. Development in these areas continues, with examples including profiling of stud hardness to minimize the bathtub effect (wear of the center of the rolls more rapidly than the outer areas), low-profile edge blocks for installation on worn tires, and improvements in both design and wear materials for cheek plates.
With Strip Surface, HPGRs improve observed downstream comminution efficiency. This is attributable to both increased fines generation, but also due to what appears to be weakening of the ore which many researchers attribute to micro-cracking.
As we tested , the average yield of 3mm-0 and 0.15mm-0 size fraction with Strip Surface was 78.3% and 46.2%, comparatively, the average yield of 3mm-0 and 0.3mm-0 with studs surface was 58.36% and 21.7%.
These intelligently engineered units are ideal for classifying coarser cuts ranging from 50 to 200 mesh. The feed material is dropped into the top of the classifier. It falls into a continuous feed curtain in front of the vanes, passing through low velocity air entering the side of the unit. The air flow direction is changed by the vanes from horizontal to angularly upward, resulting in separation and classification of the particulate. Coarse particles dropps directly to the product and fine particles are efficiently discharged through a valve beneath the unit. The micro fines are conveyed by air to a fabric filter for final recovery.
Air Magnetic Separation Cluster is a special equipment developed for dry magnetic separation of fine size (-3mm) and micro fine size(-0.1mm) magnetite. The air magnetic separation system can be combined according to the characteristic of magnetic minerals to achieve effective recovery of magnetite.
After rough grinding, adopt appropriate separation method, discard part of tailings and sort out part of qualified concentrate, and re-grind and re-separate the middling, is called stage grinding and stage separation process.
According to the characteristics of the raw ore, the use of stage grinding and stage separation technology is an effective measure for energy conservation in iron ore concentrators. At the coarser one-stage grinding fineness, high-efficiency beneficiation equipment is used to advance the tailings, which greatly reduces the processing volume of the second-stage grinding.
If the crystal grain size is relatively coarse, the stage grinding, stage magnetic separation-fine sieve self-circulation process is adopted. Generally, the product on the fine sieve is given to the second stage grinding and re-grinding. The process flow is relatively simple.
If the crystal grain size is too fine, the process of stage grinding, stage magnetic separation and fine sieve regrind is adopted. This process is the third stage of grinding and fine grinding after the products on the first and second stages of fine sieve are concentrated and magnetically separated. Then it is processed by magnetic separation and fine sieve, the process is relatively complicated.
At present, the operation of magnetic separation (including weak magnetic separation and strong magnetic separation) is one of the effective means of throwing tails in advance; anion reverse flotation and cation reverse flotation are one of the effective means to improve the grade of iron ore.
In particular, in the process of beneficiation, both of them basically take the selected feed minerals containing less gangue minerals as the sorting object, and both use the biggest difference in mineral selectivity, which makes the two in the whole process both play a good role in the process.
Based on the iron ore processing experience and necessary processing tests, Prominer can supply complete processing plant combined with various processing technologies, such as gravity separation, magnetic separation, flotation, etc., to improve the grade of TFe of the concentrate and get the best yield. Magnetic separation is commonly used for magnetite. Gravity separation is commonly used for hematite. Flotation is mainly used to process limonite and other kinds of iron ores
Through detailed mineralogy study and lab processing test, a most suitable processing plant parameters will be acquired. Based on those parameters Prominer can design a processing plant for mine owners and supply EPC services till the plant operating.
Prominer has been devoted to mineral processing industry for decades and specializes in mineral upgrading and deep processing. With expertise in the fields of mineral project development, mining, test study, engineering, technological processing.
DS(customers mine name in short) copper concentrator has encountered problems such as easy plugging of screen surface and heavy screen funnel, low screening efficiency of vibrating screen, frequent maintenance of some equipment, coarse particle size of crushed products, etc. The technical transformation is needed to influence the smooth operation of the production.
In the concentrator, the hardness of the ore is 8 ~ 10, the grinding power index is 14 ~ 15 kWh/t, the moisture content is 3%, and the loose density is 1. 69t/m 3, Density 2. 7tm3. The rock crushing system is mainly equipped with a vibrating feeder, 16 sets of conveyor belts, and 6 sets of heavy-duty double-deck vibrating screens (pre-screening, heavy screening), 17 single-layer vibrating screens (check and screen, single screen), 4 medium crushing Simons cone crushers and 8 fine crushing Simons cone crushers.
The coarse crushing equipment is three 54 mm*74 mm cycle crushers. The coarse ore is transported to coarse ore heap by three Iron plate feeders. The stone crushing section is responsible for the medium and fine crushing operations of the ore. This process strengthens the pre-screening before the medium crushing and eliminates the adverse effects of the sticky wet powder ore on the ore crushing operations.
A new cone crusher is used to reduce the particle size of the crushed product, and the metal crushing efficiency is improved by automatically controlling the power of the crusher and filling the ore as much as possible, to ensure the particle size P80 of broken mineral products meet the requirements of grinding operation, then improve the grinding efficiency.
More water flow, easy plugging of screen surface and heavy screen hopper, low efficiency of vibrating sieving, serious aging of Simmons cone, insufficient production capacity, frequent overhauling, affecting production, high system operation rate and coarse grain size of the broken product.
The technical transformation of ore crushing technology includes the adjustment and optimization of technical parameters of existing crushing equipment, the improvement of screening equipment, the improvement of screening efficiency and the reduction of final crushing product granularity. During the transformation of the crushing system, the maximum and minimum feed and discharge parameters of each crushing equipment should be considered, and the transport capacity of the conveyor belt should be considered comprehensively to ensure the normal operation of crushing system.
Installation of connecting flume under the coarse ore heap and at the outlet of the vibrating bucket will lead the accumulated water out, and will lead the water from the high building to the sewage pipe, so that the flow water is greatly reduced, thus improving the screening efficiency and reducing the equipment failure rate.
3.2.1 Add Weight screen Adding the original 2 heavy sieves to 3 sieves, reducing the working load of medium crushing, appropriately enlarging the size of the sieve to 12 am *25 mm, and increasing the product yield efficiency 8% to about 13%; gradually replaced the original single screen with the advanced two-stage screen to improve the stability of the inspection screening operation and to provide the guarantee for balanced stable and efficient organization of production. 3.2.2 Screen surface upgrade Chang the rubber screen mesh into the rubber steel wire screen mesh, to extend the service life of the screen Mesh, the drop of large pieces of ore will be reduced, and the opening form of the screen Mesh be changed from the original straight tube type to the trumpet type, thus reducing the probability of ore blocking the Screen Mesh. The opening ratio of the screen was increased from 37% to 42%, thus increasing the effective use area of the vibrating screen and the screening efficiency from 71% to 75%. 3.2.3 Screen frame support spring upgrade The original screen frame supporting spring is a rubber spring with an amplitude of 2.0 am, which is easy to be sheared and compressed, poor in oil resistance and light resistance, and easy to be aged. After replacing the high-strength and large-diameter steel spring, the amplitude is increased to 6.5 mm, the service life is prolonged, the bearing capacity is strengthened, the screening speed is accelerated, and the screening efficiency is improved.
Before 2000 years ago, there were 4 middle-crushing Simons cone crushers, # ~ 4#, and 8 fine-crushing Simons cone crushers, 1# ~ 8#. From 2000 to 2004, four high-efficiency H8000 mm hydraulic cone crushers were introduced to replace 1 #, 2 # medium-crushing Simons cone crushers and 1#, 2 # fine-crushing Simons Cone Crushers. In 2009,2 Metso MP800 MM cone crushers were introduced to replace 1# and 2# Fine Simmons cone crushers to solve the problem of insufficient fine crushing capacity In 2012, 2 METSO MP800 mm cone crushers were introduced to replace 3 # and 4 # Medium Simons cone crushers, and in 2016,2 Metso MP800 MM cone crushers were introduced to replace 1 # and 2 # medium crushing H8000 hydraulic cone crushers solve the problem of hydraulic cone crusher can not automatically adjust the ore discharge size.
In 2016, four Metso MP800 mm cone crushers were adopted, although the capacity and efficiency of the crushers were improved, the final crushing product particle size P80 still did not reduce. In order to solve this problem, a new type of XT750 liner board is developed, which increases the width of parallel band of liner board from 25 mm to 30 MM, prolongs the time of ore remaining in parallel band, increases the times of ore being broken and impacted in crushing zone, and increases the fine particle content in ore discharge Reducing the particle size of the final product of crushing. At the same time, the thickness of lining board is increased by 25%, and the manganese content of the material is increased from 14% to 16%, which can solve the problems of the lining board such as serious wear and tear in the later period, easy to plug up the bucket, increased energy consumption, uneven crushing and lower crushing efficiency, and prolong the service life of the lining board.
The feeding hopper can not feeding ore uniformly, the ore is scattered in the cone crushing chamber, the ore cannot be crowded, the crushing efficiency is low, and the size of the discharging ore is coarse. By adding an 80 mm*1000 mm central funnel to the ore feeder and setting a 900 mm concave ore separator above the moving cone, the ore feeder is lowered through the central funnel and dropped vertically to the Ore Feeder Evenly distributed in the cone crushing cavity, crushing cavity feeding uniform, smooth running current, reduce loop jump, to achieve full ore.
(1) Increase crushing capacity. The cone crusher has been reformed several times, and the capacity of the ore crushing system has been improved remarkably. The problem of the insufficient capacity of the crushing system has been solved. The annual capacity of the crushing system has increased from 24.237 million tons in 2013 to 24.499 million tons in 2016. (2) Through the technical transformation of the drainage device, the pre-screening and screening vibrating screen, the type of the medium-fine cone crusher is changed, and the production management is strengthened, so the production capacity of the crushing process is improved to a certain extent The potential of the rock ore crushing equipment is brought into full play, the running rate of the equipment is reduced, the equipment is convenient for maintenance, and the particle size of the final crushing product is reduced to P808.5 mm, thus creating favorable conditions for the efficient production of the grinding operation The utility model has the advantages of energy saving, consumption reduction and labor intensity reduction.
Production line is introduced: the iron ore crusher has been widely used in mining, metallurgy, chemical, building materials, roads, railways, water and other industries. the applied material consist of hematite, magnetite, siderite, limonite, etc.
Iron ore is an important raw material of steel producers.After crushing, grinding, magnetic separation, flotation, re-election and other procedures,natural minerals(iron ore)elected gradually of iron. Iron exist in nature all in compounds state, especially in the state of iron oxide but has more impurities. Such as hematite, magnetite, siderite, limonite, etc.
Large iron ore is sent to the jaw crusher or mobile jaw crusher for coarse crushing by the vibrating feeder. The coarsely-crushed iron ore is sieved by the vibrating screen and sent by the belt conveyor and secondary crushed by single-cylinder hydraulic cone crusher; the crushed iron ore material is fed into HP Series multi-cylinder hydraulic cone crusher for fine crushing;
The iron powder 0-12 mm sieved by the vibrating screen was evenly sent to the ball mill for milling, and was sieved by a spiral classifier. If it did not meet the requirements, it was sent to a ball mill to continue milling.
Iron ore is main raw material of steel enterprise. Natural iron ore is processed to iron by crushing, grinding, magnetic separation, flotation, etc. processes. Iron is widely used in infrastructure and daily life. Iron ore can be smelted to pig iron, wrought iron, ferroalloy, carbon steel, alloy steel and so on.
During sending materials to Jaw Crusher, muck will be sent out by belt conveyor previously. Materials crushed by Jaw Crusher are sent to the hopper below stock dump, and then they are transported to cone crusher for secondary crushing. The materials meeting requirements are sent to Sand Making Machine, but unqualified materials should be sent to Cone Crusher for reprocessing. Eligible materials will be shaped in VSI Sand Making Machine, and then Vibrating Screen will screen final products out for customers.
HP Series Multi-cylinder Hydraulic Cone Crushers are known for having the highest crushing force of any cone crushers similar in size. Suitable for reducing and shaping both hard rock and soft rock, It is the ideal choice for the secondary and fine crushing process.
DP Series Single Cylinder Hydraulic Cone Crushers are reliable rock crushing machines for all demanding quarrying, mining, and tunneling applications. It can be equipped with coarse cavity or fine cavity with a large discharge opening adjustment from 6mm to 76 mm.
HS Series Symons Cone Crusher is widely used in the metallurgical industry, construction materials industry, road building industry, chemical industry and silicate industry. It is suitable to crush ores and rocks with medium hardness and medium hardness above.
PY Series Spring Cone Crusher is suitable to crush all kinds of ores and rocks with medium hardness and above. It has features of reliable structure, high efficiency, high capacity,low operating cost,easy adjustment ,economical to use and so on.