云锡某矽卡岩白钨矿新工艺试验研究

以云锡某矽卡岩白钨矿为研究对象，该钨矿含有大量的含钙脉石，为实现白钨矿与含钙脉石的有效分离，钨常温粗选和加温精选作业需要添加大量的水玻璃，导致后续钨精矿和尾矿脱水沉降困难。在现场生产工艺流程上进行新工艺改进，试验结果表明，在钨常温粗选作业采用捕收剂SJ-Y2用量120 g/t、调整剂NaCO₃用量2 000 g/t、抑制剂水玻璃用量4 000 g/t,钨浮选柱加温精选作业采用调整剂NaOH用量1 000 g/t、抑制剂水玻璃用量50 000 g/t、温度为90℃,经脱硫作业和钨浮选作业获得了产率0.31%的最终钨精矿、钨精矿含WO₃品位为58.77%、回收率为82.77%的较好选矿指标。

Experimental study on a new process of skarn scheelite in Yunnan Tin

This paper takes a skarn scheelite mine in Yunxi as the research object. This tungsten mine contains a large amount of calcium gangue. In order to realize the effective separation of scheelite and calcium gangue, a large amount of water glass needs to be added in the tungsten room temperature roughing and heating cleaning operations, resulting in the difficulty of subsequent dehydration and sedimentation of tungsten concentrate and tailings. The new process was improved in the field production process. The test results showed that the collector SJ-Y2 dosage of 120g/t, the regulator NaCO3 dosage of 2000g/t, and the inhibitor sodium silicate dosage of 4000g/t were used in the tungsten room temperature roughing operation, and the regulator NaOH dosage of 1000g/t, the inhibitor sodium silicate dosage of 50000g/t and the temperature of 90oC were used in the tungsten flotation column heating and cleaning operation. The final tungsten concentrate with a yield of 0.31% was obtained through desulfurization operation and tungsten flotation operation, Tungsten concentrate has a good beneficiation index with WO3 grade of 58.77% and recovery of 82.77%.