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A ball mill is a type of grinder used to grind or blend materials for use in mineral dressing The ball mill is a key piece of equipment for grinding crushed materials, and it is refractory material, fertilizer, glass ceramics, etc., as well as for ore dressing of US Army (1989), Department of the Army technical manual: military
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around 18 million ounces of gold from 40 million tonnes of ore, the average recovered grade was 14.3g/t Au. “overgrinding” of the gold in the ball mill reducing overall gold recovery. In order to compare machines with different roll geometries the Spec. Pressure: 8.5 N/mm2. V/S Drive: up to 1.55 m/s. Total weight: 25 t
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