A watermill or water mill is a mill that uses hydropower. It is a structure that uses a water wheel or water turbine to drive a mechanical process such as milling grinding, rolling, or hammering. . The waterwheel was found in China from 30 AD onwards, when it was used to power trip hammers, the bellows in smelting iron,
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Dec 16, 2016 Ball mill is widely used in many industries including electric power, ferrous metal They are used for grinding ores or other materials into small formed materials. Technological Development Zone, Shenyang, P.R.China.