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粉钨精矿超磷,是我矿生产中一个比较难解决的问题。近年来,选矿厂磁选工段用强磁选机提高了产品质量,但经强磁选后的尾矿因含磷过高未成产品而积存下来。为此,对积存的高磷钨精矿进行浮选降磷试验。通过小型试验,获得产率58.08%,含三氧化钨76.00%,含磷0.095%的白钨精矿。(一)试料性质试料取自强磁选机尾矿。试料中除白钨矿、黑钨矿外,还有少量的独居石、磷钇矿、磷灰石、黄铁矿、磁黄铁矿和毒砂等。独居石约占磷矿物的60%。其含量分别为(%):三氧化钨64.30、硫0.56、砷0.16、磷0.62、钙7.26、铁7.66。粒度组成及磷元素分布情况表明,磷主要分布在-0.15毫米以下粒级中,且随粒度减小,含量增高,分布率也增高。
Powder tungsten concentrate super-phosphorus, mine production is a more difficult problem. In recent years, concentrator magnetic separator with strong magnetic separator to improve product quality, but after strong magnetic separation of tailings due to phosphorus is too high and not as a product of the accumulation. To this end, the accumulation of high-phosphorus tungsten concentrate flotation phosphorus test. Through a small test, 58.08% of the yield was obtained, containing scheelite 76.00%, containing 0.095% phosphorus scheelite. (A) the nature of the sample taken from the strong magnetic separator tailings. In addition to scheelite and wolframite, there are a few monazite, xenotime, apatite, pyrite, pyrrhotite and arsenopyrite in the sample. Monoliths account for about 60% of phosphate minerals. The contents were (%): tungsten trioxide 64.30, sulfur 0.56, arsenic 0.16, phosphorus 0.62, calcium 7.26, iron 7.66. Particle size distribution and distribution of phosphorus showed that phosphorus was mainly distributed in the grain size below -0.15 mm, and with the decrease of grain size, the content increased, the distribution rate also increased.