Double roll crusher is mainly used for the crushing of medium or lower-hardness mines and rocks with medium or lower rigidity in mine selection, chemicals, cement and building materials industrial production. Roll crusher machine has a theoretical maximum reduction ratio of 4:1. If a 2 inch particle is fed to the roll crusher, the absolute smallest size one could expect from the crusher is 1/2 inch. Toothed roller crusher will only crush material down to a minimum particle size of about 10 Mesh (2 mm). Some major advantages of roll crushers are they give a very fine product size distribution and they produce very little dust or fines. Roll crushers are effectively used in minerals crushing where the ores are not too abrasive and they are also used in smaller scale production mining of more abrasive metal ores, such as gold. Coal is probably the largest user of roll crushers, currently, though. Coal plants will use roll crushers, either single roll or double roll, as primary crushers, reducing the ROM coal. Usually, these crushers will have teeth or raised forms on the face of the roll. (Roll crushers used for minerals and metal ores have smooth faced rolls.)
Tooth Roll Crusher is widely used for secondary and fine crushing in the industry of mining, building materials, chemical industry, metallurgy and so on. It can crush materials in middle hardness such as rocks, ore, coke, lump coal, slag, mineral slag, cement clinker, fireproof materials, etc.
Toothed Roll Crusher is worked by making two toothed roll rotate oppositely under the action of two pulleys on two sides of crusher, which driven by one motor or some motors. Thus the materials reaching the required size fall and discharged automatically, while the ones larger than two toothed rollers still left to be crushed until they reach the required size.A roll crusher using compression to crush, with two rolls rotating about a shaft, towards the gap between the rolls. The gap between the rolls is set to the size of product desired, with the realization that the largest feed particle can only be 4 times of the gap dimension. The particles are drawn into the gap between the rolls by their rotating motion and a friction angle formed between the rolls and the particle, called the nip angle. The two rolls force the particle between their rotating surface into the ever smaller gap area, and it fractures from the compressive forces presented by the rotating rolls.
1. Inside equipped with a dust excluding plate, good sealing, avoid the splash of fine material, less dust, low operating noise.2. Grinding roller is optimized, no need to replace the mill roll body during the whole life of equipment operation.3. Adopts wear-resisting plates (also named roller skin); use foreign advanced wearable technology for wear liners; if wear liner is badly worn, you can weld it by electrode wear and polish it.4. Big crushing ratio, after crushing powder content is below 5%; especially suitable for crushing of quartz sand industry.5. Indispensable auxiliary equipment for regulating the fineness of products in sand making industry.6. Average discharging size without blocking up.7. Automatically screening the materials after crushing.8. High efficiency and low energy consumption.9. Good flexibility and operational reliability.10. Removable shell which is convenient for daily maintenance and inspection of the machine.
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As we know, sampling is the most important part in the characteristics detection of commercial coal and is a prerequisite for obtaining reliable test results. A large number of experiments show that if the bias is represented by percentage, the coal sampling accounts for 80% and the coal sample preparation occupies 16%. Obviously, in addition to sampling, the sample preparation is also a crucial part before coal sample analysis. As an experienced manufacturer, TopSampler manufactures automatic sample analytics system which merges sampling system, sample preparation system, inspection system, and analytics system into a single. We also have some research on sample preparation system. Next, we will make an introduction to the procedures of coal sample preparation.
Under normal conditions, the size and mass of coal samples we collected from the raw material are too large for the subsequent chemical and physical test. The purpose of sample preparation is to reduce and divide the original samples into test samples which have suitable size and represent the characteristics of the original samples. The size and mass of test samples depend on what kind of analysis you performed. The procedures of coal sample preparation mainly include reduction, division, mixing, sieving and drying. In article Coal Sample Preparation Procedures Overview (2), we introduce the sample division, mixing and sieving. Well walk through coal sample drying and reduction in detail in an upcoming section.
Drying is the process of removing large amounts of water from coal. If the water content of coal is too high, it will be hard to get through or adhere to the surface of the sample reduction and sample division machine. Therefore, the first purpose of drying is making the coal sample pass through the crushing and dividing equipment smoothly and the second one is avoiding water content changes in coal samples during analysis and testing.
Normally, coal sample drying should not exceed 50 degrees centigrade and dry on the floor will take much longer than in the drying oven. After continuous drying, the mass change of coal samples should not exceed 0.1%, and we should cool coal samples at ambient temperature and balance them with atmospheric humidity. The cooling time depends on the drying temperature. If it is dried at 40, it is enough to cool normally for 3 hours, while, the oxidizing coal should not be dried at a temperature above 40 degrees centigrade.
Coal sample reduction is the process of reducing the size of coal samples, aiming at increasing the number of sample particles and decreasing the sample division bias. Samples which have the same quality, the size is smaller and the number is larger, the bias of sample division will be lesser. However, crushing consumes time and energy, especially lead to water loss. Therefore, a mess of large size coal samples should not be crushed at one time to the size required by the test sample. The method of multi- class crushing and division is better than it, but the division stages should not be too much.
The jaw crusher has a strong crushing ability, high water adaptability and simple structure. It is easy to clean and good at crushing raw materials with high rigidity, such as limestone and coal. We can control the sample size by adjusting the space between the jaw plates. Jaw crusherXDEP-A TYPE produced by TopSampler is a good choice.
The hammer crusher has high working efficiency and good sealing, but it is difficult to clean and it has bad water adaptability. Thus, the coal samples which have high water content should not be put into it directly. The sample size is controlled by replacing sieve plates with different apertures. Hammer crusherXDSP-600 from TopSampler is made up of crusher hammer, crusher cavity, sample divider system and electric controlling system. It is applied to various auger sampling system and sample analytics system.
The coal samples processed by roller crusher will not be excessively crushed or overheated. The sample size is controlled by adjusting the clearance of the rolls. XDSP-300 is a kind of roller crusher produced by TopSampler. It has no noise and no dust, and it is convenient to move and clean. The cavity is weld by high-quality steel to avoid cracks and breakage. If you are interested, feel free to contact us.
The sealed crusher is a new type of equipment which has been developed successfully in recent years. It has high efficiency. The coal samples can be reduced to less than 2mm in 1-2 minutes, no powder pollution.
With the development of technology and the updating of products, some manufacturers have upgraded the traditional sample making equipment in recent years. They assemble single crushing and division equipment into a reliable sample preparation system which called crushing-dividing machine and multi-functional crushing-dividing combined sample preparation unit, making work simple and easy. The working efficiency is greatly improved.
The roller crusher has widely application in the industries of mining, building materials, chemical industry, metallurgy, etc. The roller crusher can do secondary and ...coal roller press crusher, coal roller press, roll press JOYAL Roller Crusher,Roll Crusher,Double Roller Crusher,Twin Roller Crusher Manufacturers From China JOYAL,if ...
Ore beneficiation equipment, sand making equipment, crushing equipment and powder grinding equipment, which are widely used in various industries such as metallurgy, mine, chemistry, building material, coal, refractory and ceramics.
Cyclone preheater, also known as suspension preheater, is the main cement equipment commonly used in the new dry process cement production line. It is the main gas-solid reaction unit of the cement raw meal pre-decomposition system, which makes full use of the high-temperature exhaust gas discharged from the kiln tail and the high-temperature flue gas generated by the combustion at the bottom of the decomposition furnace to heat raw materials in a suspended way. It replaces the material preheating process and partial calcium carbonate decomposition process in the kiln, making the raw material powder fully contact with the hot air. The fast heat transfer speed and high efficiency of the cyclone preheater are beneficial to improve the thermal efficiency and clinker output of the calcining system. Meanwhile, it has less moving parts, less auxiliary equipment, simple maintenance, small space occupation, and its existence shortens the length of cement rotary kiln, the investment cost is generally low.
Our cyclone preheating system mainly consists of a feeding system, preheater, pushing device, hydraulic system, precalciner, and frame. According to the number of cyclones, the preheater can be divided into different stages, generally 2-6 stages. The higher the stage, the more efficient the preheater is. While each stage increases the pressure drop across which the kiln fan must work.
As a Chinese cement equipment manufacturer, AGICO supplies a 5-stage cyclone preheater with different capacities. The preheater we produced is combined with precalciner and widely applied to dry process cement production line in the form of a preheater tower. It is the main equipment in the cement calcination process together with clinker cooler and cement rotary kiln.
AGICO Group is an integrative enterprise group. It is a Chinese company that specialized in manufacturing and exporting cement plants and cement equipment, providing the turnkey project from project design, equipment installation and equipment commissioning to equipment maintenance.