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Brief Analysis of Hollow Axis of Grinding Mill
Source：Henan Xingbang Heavy Machinery Co.,Ltd. Date：06/09/2014
A ball mill is a type of grinding mill, purposed similarly to the sag mill or other mining crushers. These machines are used to grind or mix metals or raw materials for further processing. Various materials are placed into the mill drum and rotated with the mined materials that are to be crushed. The ball mill contains materials meant for crushing and grinding, such as balls of ceramic, small rocks, or balls made from stainless steel. The internal device of the ball mill grinds material into powder-like substances, and can rotate continuously for optimal grinding and refinery production.
A ball mill is a horizontal cylinder partly filled up with steel balls (or occasionally other shapes) that rotates on its axis, imparting a tumbling and cascading action for the balls inside ball mill. Material fed from the ball mill is crushed by impact and ground by attrition involving the balls. The grinding media inside ball mill are often made from high-chromium steel. The smaller grades of ball mill are now and again cylindrical rather than spherical. There exists a speed of rotation (the “critical speed”) at which the contents of ball mill would simply ride on the roof from ball mill as a result of centrifugal action.
The ball mill is key equipment for regrinding. Ball mill really is popular for cement, silicate product, new type building material, fire-proof material, chemical fertilizer, black and non-ferrous metal, glass, ceramics and etc. Our ball mill can grind ore or another materials which can be grinded either by wet process or by dry process.
Ball mill is composed by feeding part, discharging part, rotation part and driving part (reducer, small driving gear, electric motor and electric controller) and so on. The hollow axis of ball mill adopts the cast steel, and the lining can be replaced. The big rotary gear is forged from cast rolling gears.The barrel body of the ball mill is inlaid with wearable plates.
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