The ball mill is supported on the main bearing through the hollow shafts at both ends. Among the two hollow journals, one can be axially extended and retracted on the main bearing, and the other is fixed. Since the gear drive of the ball mill will generate centripetal force, a hollow journal is designed with two shoulders, and the distance between the shoulders is exactly equal to the length of th

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Ball mills can be divided into grid-type ball mills and overflow-type ball mills according to different discharge methods. They are the most common mills used in concentrators at present. Conical ball mills are eliminated due to their low productivity, many types of linings and difficult maintenance. It is still used in some old concentrators. Among them, the overflow type ball mill is mainly comp

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