gold mining equipment large grinding media

A grinding system comprising primary and secondary ball mills, means for continuously discharging grinding media and ground material from said primary mill, means for seperating said primary mill discharge into three parts comprising relatively large grinding media, relatively small grinding media, and ground material, means for continuously returning said relatively large grinding media to said primary mill,gold mining equipment means for feeding said relatively small grinding media to said secondary mill, means for feeding at least a portion of said ground material to said secondary mill, means for continuously charging reground material and grinding media from said secondary mill, means for separating the discharge of said secondary mill into three parts comprising relatively large grinding media, relatively small grinding media, and reground material, and means for returning said relatively large grinding media to said secondary mill.

8. The method of grinding in a ball mill system comprising primary and secondary mills which comprises continuously circulating relatively large grinding media through said primary mill during normal grinding operation thereof and continuously conveying from said primary to said secondary mill grinding media which are too small for effective grinding in said primary mill.

9. The method of grinding in a ball mill system comprising primary and secondary mills which comprises circulating through each mill grinding media of sufficient size to grind effectively in said mill, continuously conveying from said primary to said secondary mill grinding media of lesser diameter than that required for effective grinding in said primary mill, and continuously rejecting from said secondary mill grinding media of lesser diameter than that required for effective grinding in said secondary mill.

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Created on Dec 31st 1969 18:00. Viewed 0 times.

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