凡口铅锌矿充填用细粒级尾砂脱泥与过滤试验

为解决凡口铅锌矿充填用细粒级尾砂过滤困难的问题，对其进行了旋流器脱泥试验，并通过实验室真空抽滤试验和陶瓷过滤机单滤板过滤试验考察了旋流器沉砂的过滤性能。试验结果表明：采用CZI 100旋流器，在合适的条件下，可大量脱除细粒级尾砂中的-9.98 μm微细粒矿泥，并可使沉砂满足浓度大于60%、作业产率大于40%的要求；所得沉砂过滤性能良好，实验室真空抽滤时的滤液透过速度达到现场细粒级尾砂用盘式过滤机给矿的4倍左右，用陶瓷过滤机单滤板过滤时滤饼水分可降至23%以下。

Experiment on Desliming and Filtration of Fine Tailing for Backfilling in Fankou Lead-zinc Mine

To solve the problems of fine tailings filtration for backfilling in Fankou Lead-zinc Mine, the hydrocyclone desliming tests on the tailings were carried out. The filtration performance of hydrocyclone grits was investigated through the laboratory vacuum filtration tests and the single filter plate tests with ceramic filter. The results showed that with the use of CZI 100 cyclone, a lot of -9.98 μm micro-fine particles in the fine tailings slimes can be removed in the right conditions, and the grits removal can meet the requirements of the concentration greater than 60% and the production rate greater than 40%. Good filtration performance of grits has been achieved. In the laboratory vacuum filtration test, the speed of filtrate was up to about 4 times as much as the feed of disc filter for in-site fine tailings. In single filter plate test with the ceramic filter, the filter cake moisture was reduced to 23% or less.