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Henan Zhengzhou Mining Machinery Co., Ltd. 1 Set (Min. Order) 2.Application: Ball Mill is a key equipment to grind all kinds of ores and other materials. Ball mill are generally used to grind material 1/4 inch and finer, down to the particle size of 20 to 75 microns. The ball mill is used to grind many kinds of mine and other materials, or to ...