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在砂锡重力选鑛作业中,筛分分级工作的好坏,直接影响到选鑛回收率的提高。由于我们原有的选鑛技术水平较差,特别是流槽粗选完全没有筛分分级,所以金属回收率很低。在今年提高选鑛的金属回收率力主要内容的社会主义竞赛中,改进筛分分级工作便成为大家所重视的问题。先在某锡鑛,采用了一种设备简单不需动力的‘水中筛’进行粗选筛分分级,并进行了流程及操作的改进,接着便在各砂锡鑛推广,根据不完全的资料,由于使用水中筛的结果约提高金属回收率5％。
Gravity dressing operations in sand and tin, the quality of screening work directly affect the beneficiation recovery rate. Due to the poor level of our original beneficiation technology, especially the no-sizing of the runner rougher, the metal recovery is very low. In the socialist contest that raised the main content of the metal recovery rate this year, improving screening and grading work has become a problem of great importance to all. First in a tin mine, the use of a simple device without power of the “water sieve” coarse screening and grading, and the flow and operation of the improvement, and then in the promotion of various sand tin, according to incomplete data As a result of the use of water sieve increased metal recovery rate of about 5%.