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目前各选鑛厂的重力选鑛流程是不(?),锡的选鑛厂大部为三段磨鑛。由於碎,因而严重地影响了回收率的提高。况,进行了多段磨鑛试验;又在今年部二段磨鑛为三段磨鑛,这样他们现在的4.16％。这说明实行阶段选鑛对提高回真地研究这篇总结,吸取他们的经验, 够合理的,如钨的选鑛厂大部为一段磨磨鑛段数少,造成了大粒鑛物的过粉某选厂根据苏联专家建议及鑛物组成情局推广阶段选鑛先进经验的号召下,改回收率已较过去两段磨鑛时提高了收率是有其一定的作用的。希各选厂认提高现有选鑛实收率。
At present, the beneficiation process of various concentrators is not (?), Most of the beneficiation plants for tin are three stages of grinding. Due to the broken, thus seriously affecting the recovery rate. Condition, carried out multi-section grinding test; again in the second section of the Department of grinding mill for the three sections, so that they are now 4.16%. This shows that the implementation of the dressing stage to enhance the study to enhance this summary, learn from their experience, it is reasonable, such as tungsten concentrator for a large number of grinding section, resulting in the election of large particles of mineral powder According to the suggestion of the Soviet experts and the advanced experience in beneficiation of mineral composition stage promotion, the recovery rate has played a certain role in improving the yield over the last two stages of grinding. Greek select the plant to increase the existing beneficiation rate.