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我矿丁头山车间原来的锌回收率只有75~80%(1976年仅达70.47%)。经过试验研究,采取延长硫酸铜搅拌时间等措施后,锌回收率提高,药剂消耗下降。1980年锌回收率达到91.54%。(一)矿石性质和工艺流程原矿产于裂隙充填低温热液矿床。主要矿物有方铅矿、闪锌矿、黄铁矿、方解石、石灰石及少量石英。其结构特点是闪锌矿呈粗粒结晶集合体分布于石灰岩中,这类矿石的铅锌矿物可浮性差异较大,易于分选。生产中所处理的矿石,除上述新开采原矿外,还有相当部分系以前井下的充填矿石和堆积于地面的废砂。这些矿石的铅矿物还有白铅矿、铅矾等,氧
My mine Dingtoushan workshop original zinc recovery rate of only 75 to 80% (only 70.47% in 1976). After experimental studies, to extend the copper sulfate mixing time and other measures, the zinc recovery rate increased, pharmaceutical consumption decreased. In 1980 zinc recovery rate reached 91.54%. (A) the nature of the ore and the process of raw ore fissure filling in low-temperature hydrothermal deposits. The main minerals are galena, sphalerite, pyrite, calcite, limestone and a small amount of quartz. Its structure is characterized by sphalerite is a coarse-grained crystalline aggregate distribution in the limestone, lead-zinc minerals in these minerals vary greatly floatability, easy sorting. In addition to the new ore mined as mentioned above, a considerable part of the ore processed in production is filled with previous underground ore and waste sand deposited on the ground. The lead minerals in these ores are also lead, lead and alum, and oxygen