 Vertical Coal Mill
Zenith's coal edge instrumentality chiefly includes the subsequent 3 varieties. With quite thirty years of expertise, our services embody mill inspections and performance evaluations as well as off-site grinding roller build and renovation. As a part of our quality-focused commitment to unceasingly improve coal mill pulverizer operability and maintainability. many major style upgrades are created accessible. These customerizd upgrades have power-assisted several of our customers in dramatically reducing maintenance budgets. whereas up pro?t ability throughout the equipment's long service life. Vertical coal mill is ideal coal milling equipment that integrates drying, crushing, grinding and grading conveyor all together. The high performance dynamic classifiers in vertical coal mill give super fineness management. within the mills, the raw coal is at the same time fine, dried and equally distributed to the coal burners. Hot air or flue gases transfer the fine fuel to the burner and cut back the wet within the coal. Vertical coal mill grinds and dries exhausting coals and difficult-to-grind brown coal with an occasional wet content to fine fuel and distributes them equally on to the burners. Various-sized mills for throughputs starting from 10t/h to 200t/h will be equipped. Vertical coal mill working principles Vertical coal mill operating principles: The motor dives the grinding table to show through the speed reducer. At an equivalent time, hot air comes into the roller mill from the air body of water. The materials settle the centre of grinding table from the feeder. attributable to the force, the materials move to the sting of grinding table from the centre. The materials ar crushed by the grinding roller once by pass of the groove on the grinding table. The device materials still move to the sting of the grinding table till alienated by the airstream. Then the larger materials settle the grinding table and therefore the method of crushing continues. When the materials in the airstream pass the separator on the top of the coal ball grinding mill, the materials fall down the grinding table from the taper filler under the force of guide leaf blade. The fine powder comes out with the airstream, and is gathered by the dirt catcher of the system. The powder gathered is that the final product of roller mill. within the method of the contact of airstream, the materials ar dried to satisfy the clients' would like at the correct wet. The raw material is fed into mill by feeding equipment. The hot wind enters into the mill by inlet end. As the mill cylinder rotates, the coal and hot air exchange heat in the mill. The coal is crushed and grinded in the mill. When the coal is being grinded, the powder is brought out of the mill by the hot air going through the mill. Compared with?rock grinder?(stone flour mill), the coal mill we make is with reasonable structure, high grinding efficiency and is the ideal equipment for coal processing. Make the safe operation of coal mill : Improper operation of the coal mill may cause the explosion of?coal powder kiln.?What is the proper method to operate coal mill to avoid the disaster? 1. change the piling method of the coal to make the coal accumulate little ; thus avoid the spontaneous combustion of the coal. 2. change the gap of the great bar from 25mm to 22mm; thus decrease the wind speed and increase the drying speed. 3. add a settling chamber between the coal mill and the pipe; thus prevent the hot coal powder enter the coal grinding mill. 4. add a explosion-proof valve at the opening. 5. increase the fineness of the coal from 10% to 15%. Artificial sand crusher plant 6. make up strict safety rules. Other information about coal mill If the coal mill stops for 3 days, empty the coal hopper or put a layer of raw meat powder on the surface to isolate the coal from the oxygen before stopping the coal mill, close the hot wind valve and open the close wind valve and then stop the feeding. remember to empty the coal in the coal mill before stopping the machine and not to stop the collector immediately. Check the following things when operating the coal mill: the airing is ok; there is no overfeeding or underfeeding; the temperature is not too high; the order of starting and stopping the coal mill is right; the temperature of the air from the coal mill is higher the dew point. Make an emergency plan; when an explosion happens, close the hot wind valve and the pneumatic valve, prevent the hot coal powder enter the collector and if the temperature is over 80 degree centigrade, start the carbon dioxide extinguisher. We should pay attention to avoid safety problem in operating the coal mill. As long as we obey the safety rules, the safety problems surely can be avoided.
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Vertical coal mill, coal ball mill, Artificial sand crushing plant,
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