There are several types of briquette machines with different working principles, they work on different pressures and suitable for different materials. So how they workdifferently? What are there advantage and disadvantages? Lets follow the article.
A briquette machine is used to turn the waste powder to a regular shape block, which can help to improve the conditions for those powder, make them easy for transportation, storage, and more useful for further usage.
Briquetting work always work with the binder as it needs the binding effect to get enough strength for the finished briquette. Biomass and industrialwaste are different from each other due to their binder sources.
The heating system is a special design for those briquettersdeal with materials contain lignin, lignin alway can be found on biomass. So theheating system is usually used for biomass briquetting. Other materials like coal, charcoal, etc. Binders are always needed when briquetting with the screw type briquette machine.
The suitablematerial is fed to the hopper and then conveyed by the screw inside the briquette machine.the rotating screw takes the material from the feed port, and compacts it against a die which assists the build-up of a pressure gradient along the screw.
As the screw briquette machine works with a pressure not that high, binders are always needed forming the briquette. Equip with a heating system will help the biomass material melt the internal lignin and turn it to a high-performance binder. Besides, other materials also work with this briquetterlike coal, charcoal, etc. These materials should be well mixed with the binder to get the briquette forms.
The briquette working process is in a chamber where materials are fed into, there materials are briquetting under a very high pressure. It causes theirplasticity and makes them binding stably together as a block.
Hydraulic type takes a long pressure keeping time on the briquette, this prevents theshort-time material deformation rebound and will cause a special heating for those materials like sawdust for melting its internal lignin, make the briquette with higher strength.
The piston type uses the rotary power of the mechanical device or the thrust of the hydraulic cylinder to reciprocate the piston (or the plunger), and the piston (or plunger) drives the ram to reciprocate in the forming sleeve to generate a pressing force to form the material to briquette.
A big pressure will be generated as the movement of the flywheel and punch the briquette time after time in a short time, it raises the temperature of the raw material. As the raw material moves, it fractionates with the inside, another kind of heat friction heat generates. With the action of these two kinds of heat, material raises its own temperature to a high level and melt the lignin. Particle materials then bind together and become strong enough.
Roller press works with two close rotating rollers at the same speed butwith opposite direction. The two rollers, with the same width and diameter, have holes on the surface. When they move, the same two holes on the different roller will coincide at the intersection of the midline and the briquette will be pressed there.
A normal roller press will use a wedge iron to fix the movable roller as it works on a low pressure. The hydraulic pump station is also can be used to fix the roller and supplies a much bigger but flexible support to the roller to work stable on big pressure.
For over 85 years, the KOMAREK brand has been synonymous with briquetting machines and applications. We specialize in the design and manufacturing of briquetting, compaction and granulation systems. Applications KOMAREK offers a variety of roll briquetters and custom roll compactors. Our machines can be tailored to your specific applications and are capable of handling sizes as small as 5 lbs (lab size), up to 60 tons (production-machine size) per hour. Key features of KOMAREK briquetting, compaction and granulation machines: Horizontal and vertical feed for screw or gravity feed options Custom sizes and shapes for pockets Variable speed roll and screw feeder drives to maximize product quality Rolls and feed screws available in wear and corrosion-resistant alloys Designed for easy maintenanceSolid Oil Filled Bearings option KOMAREK Exclusive Cantilevered Briquetting Machines Our versatile B and BH Series machines feature a unique cantilevered roll design that prevents overloading and streamlines roll replacement. KOMAREKs heavy-duty DH Series machines include screw, or gravity-feed options. Wide horizontal roll shafts supported by bearings offer better control and easy maintenance. Roller Presses For Large-Scale Agglomeration As a Koeppern Equipment, Inc. company, KOMAREK offers larger production briquetting, compaction, comminution and wear protection solutions. KOMAREK Briquetting Machines & Applications KOMAREK has over 800 briquetting, compaction and granulation machines installed worldwide, in multiple industries including: Find The Best Briquetting Machines & Applications That Fit Your Needs! Our highly-trained staff has decades of experience to help you select the best machine design for your specific applications. Ask KOMAREK
KOMAREK offers a variety of roll briquetters and custom roll compactors. Our machines can be tailored to your specific applications and are capable of handling sizes as small as 5 lbs (lab size), up to 60 tons (production-machine size) per hour.
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Wood briquette machine refers to the equipment for making briquettes as fuel from organic or biomass materials. For example, sawdust, rice husk, bamboo, coconut shell, hardwood lump, etc. Materials for making briquettes are required <5mm size and <12% moisture. So the accessory equipment wood crusher and sawdust dryer usually are needed.
Lignin has no melting point but it has softening point. When the temperature comes to 180 , lignin begin to soften and plasticize. At this time, continue heating the temperature to around 340, and apply a certain pressure, lignin will stick to cellulose and bind with adjacent particles.
When the moisture is too high, there will be a lot steam generating during heating. Steam gatherring together in the center hole of wood briquettes, it is easy to cause the crack of briquettes surface.
Briquetting temperature has a great influence on the wood briquettes production speed, density, appearance and quality. Therefore, the appropriate temperature must be adjusted for different raw materials. For hardwood materials, it is usually around 350.
Low temperature can not soft the lignin in the raw material, which will cause the molding cylinder to be blocked and difficult to produce briquettes. Excessive temperature will cause the surface layer of the briquettes carbonized, which make the materials hard to forming. Even if it can be formed, the density of briquette is not enough. If the carbonization is severe, a carbonized layer is formed on the inner wall of the molding cover, it will case briquettes hard to discharge out.
Aluminium chips are produced throughout the entire product creation process; during the surface treatment of cast bolts and rolling ingots, during profile, plate and sheet production as well as the machining of components. Depending on whether they are produced by milling, turning, grinding or sawing, the chips, which are often wet, vary in form and properties; wool-like, spiral, rough, fine etc. What they all have in common is: they will be re-melted, whether in a Remelter or a Refiner. This phase describes both: The end and the new beginning of the eternal Aluminium-Recycling-Cycle.
But what are the key considerations in detail? Loose chips have a large volume at low weight; so they display low bulk weight, typically lying between 140 to 250 kg/m3. This effects significant costs for storage as well as transport, both internally and externally.
In order to react against this, the chips must be pressed. This is where the applied technology is of high importance. RUFs machines can compress to a level of 2,200 to 2,400 kg/m3 (and in individual cases these figures may be exceeded) when required. As a comparison: the density of solid aluminium lies, on average, at 2,700 kg/m3.
Chips are created in Rolling mills through the milling off of the casting surface. So-called edge trimming shavings are also created during the machining of sheets, coils or foils. Briquetting applies for either form. When the company has an affiliated melting works, the pressed aluminium will be conveyed directly there (highest added value). Otherwise they will be stored and sold on the scrap market.
On account of the high density when compared to loose chips, storage and transport costs are reduced by the use of briquettes. Furthermore, briquettes achieve higher sales revenue because they are better suited to the melting process.
Pressing plants produce chips primarily through reprofiling and sawing of casted round bolts as well as finished extruded sections. As very few of these types of companies are affiliated with a melting works, storage and transport costs are extra significant.
Another factor above all in achieving higher sales revenues is that Stamping/pressing plants dispose of single origin chips with a clearly defined composition. This means they can be used as alloying additions during the melting process, which is very much in-demand in the melting plants as it means they have to purchase less, very expensive, alloying elements and aggregates.
Machining companies are to be found in many branches like e.g. in the Automobile industry, Aerospace and Mechanical engineering. Handling chips is daily business for these companies, and it has the association of a waste product of machining. The advantages of briquetting regarding storage and transport costs also exist here, just like the optimisation of sales revenues, because of the volume reduction of the chips after
RUFs systems are equipped with an integrated catchment device for fluids. This ensures that your storage area remains clean, which is very much in alignment with orderly production processes and environmental protection in practice. Personnel costs are reduced and work safety levels are increased when the machine works automatically and only the conveyance of chips or briquettes requires service personnel.
Remelters and Refiners are smelters, which are differentiated by e.g. the products they manufacture. Remelters mostly produce wrought alloys as wire, bolts and rolling ingots. Refiners produce casting alloys in the form of ingots. Both utilise chips, amongst others. The difference between using loose chips or briquetted aluminium for remelting is, in both cases, significant.
Because under the effect of flames, the light material burns-off very quickly instead of melting. And as the relation between surface area and density is particularly big with chips, a lot of material is lost through this burn-off. Moreover, the large exposed aluminium surface area of the chips mean a high tendency to oxide formation. This leads to further losses in the melting furnace in the form of dross.
A further problem factor in the melting of aluminium: when the liquid metal comes into direct contact with other liquids such as cooling lubricants, an almost explosive reaction takes place. Therefore, the factor of residual moisture is important.
Loose chips often have a moisture content of 20 per cent and more. If they are not briquetted, the chips must go through a centrifuge and further drying systems in order to remove the residual moisture. In contrast briquetting is significantly more economically effective, especially when high quality systems are used. An appropriately high pressing power reduces the moisture content down to between three and five per cent. If the briquettes are subsequently stored in a dry place, this reduces to values fewer than two per cent. And the briquettes can be safely and efficiently melted.
Because of burn-off and oxidation, loose chips cannot be used in some melting furnaces or only after very cost intensive treatment. The melting process of loose chips in a rotary drum furnace requires the addition of salt. The inherent problem here is: the left over salt slag has to be disposed of or undergo re-treatment, which is very expensive.
Hearth type melting furnaces can also be equipped with so-called Vortex-installations, which can be operated with electromagnetic or mechanical pumps. This leads to the chips being stirred into the molten mass. This functions pretty well, but it requires a lot of effort. And apart from the purchase costs, the installation needs space, regular maintenance and there are also extra personnel and operating costs involved, particularly due to the high wear factor.
Independent of which furnace technology is implemented, the melting process functions at its best with highly compressed briquettes. What is decisive is the density of the briquettes, which lies between 2,200 and 2,400 kg/m3.
The density of liquid aluminium is, on average, around 2.350 kg/m3, depending on the alloy. Therefore the briquettes hardly float at all, which means burn-off and oxide formation are reduced to the minimum. This is the reason why Refiners generally report a yield at least two per cent higher. Some have confirmed five to seven per cent more metal yield.
Whether Rolling mill, pressing plant, Machining company or smelters; what is decisive is always using a needs based, high quality briquetting system. RUF has an appropriately large range of systems with customised automation and further accessories. Moreover, the numerous users of RUF systems confirm the high level of robustness, reduced maintenance costs as well as reliable service. This means ROI is achieved often within one or two years.
As a leading innovator, the Bavarian company invests regularly in the optimisation of its systems and cooperates with research institutions and universities. Furthermore, RUF works intensively together with their customers. RUF offers the companies the opportunity to test the briquetting of their own chips in in-house test systems and/or they rent them briquetting machines. This is a basis for RUF engineers to optimise system solutions for individual cases and it is a way of introducing new areas of application.
RUF briquetting systems: innovative, individual, international. Being a machine builder and the market leader in the field of briquetting, the Ruf GmbH & Co. KG has successfully been specialising in the development and production ofbriquetting ...