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我厂投入生产三年以來,出窿原矿性質随着采掘深度而变化,矿脉愈打愈窄,在采幅不变的情况下,貧化率逐月增加,出窿原矿品位逐渐下降。因此,我們會对中南鎢矿系統所謂“典型設計”的机选流程作了几次重大的改进。在提高回收率的前提下,今年3～5月处理能力巳达到設計能力的209%,并且最近一次工业性試驗已經跃进到設計能力的300%。茲將我厂所作有关“由一变三”的重大技术改进措施和試驗研究資料,总結如下,以供大家参考研究。机选前的准备工作机选前的手选及破碎工作,在很大程度上决定了机选处理能力和回收率的高低。它的作用是替机选准备一定粒度和品位的合格原矿,并脱除大部分原生矿
Since the plant was put into production three years ago, the nature of the ore hole changes with the depth of excavation. The veins become narrower and narrower. Under the condition of constant amplitude, the depletion rate increases month by month, and the ore grade in the hole gradually decreases. Therefore, we will make several major improvements to the so-called “typical design” of the Central South Tungsten System. With the aim of improving the recovery rate, the processing capacity from March to May this year has reached 209% of the designed capacity, and the latest industrial test has leapt to 300% of the designed capacity. I will plant made by the “from one to three” major technological improvement measures and experimental research data, summarized below, for your reference. Pre-election preparations The pre-election hand-picking and crushing work, to a large extent, determines the processing capacity of the machine and the level of recovery. Its role is to prepare for the election of a certain size and grade of qualified ore, and remove most of the primary ore