某铜钨矿中白钨矿的低温浮选效果优化

Optimization on Low Temperature Floatation of Scheelite from Copper-tungsten Ore

湖南某铜钨矿建厂时制定的是常年不变的浮钨药剂制度，而矿浆温度的变化会显著影响钨浮选指标，因而选矿厂每年深秋至次年初春钨浮选指标都不理想。为了稳定选矿厂的钨回收效果，减少钨资源的浪费，提升企业的经营业绩，以该选矿厂的铜硫混浮尾矿为试样，进行了选钨药剂制度优化研究。结果表明：新型组合捕收剂zL—B＋LDZ适合该试样中白钨矿的低温浮选，在矿浆温度为10℃时，ZL—B与LDZ的质量配合比以3：2为佳，随着矿浆温度的升高，可通过逐步减少LDZ的用量、增加ZL—B的用量来适应矿浆温度的变化，以获得稳定的、理想的钨精矿指标；在zL—B＋LDZ与现场捕收剂ZL—B用量相当、矿浆温度为10℃的情况下，不仅精矿钨品位提高了0．97个百分点，而且钨回收率大幅度提高了25．67个百分点。

The invariable medicament of tungsten flotation has been taken since Hunan copper tungsten separation plant was built, however the pulp temperature will influence the tungsten concentrate index. The flotation index is non-ideal during the period from late autumn to the next early spring. In order to stabilize the performance of tungsten recovery, decrease the tungsten resources waste, and promote the production achievement, medicament optimization research was carried out by taking copper-sulphur bulk flotation tailings as the sample. The results show that the new combination collector ZL-B ＋ LDZ is suitable for the low temperature scheelite flotation of this sample. When the pulp temperature is 10 22 ,the optimum mass ratio of ZL-B to LDZ is 3： 2. When the temperature increases, a stable and ideal tungsten concentrate index can be achieved by decreasing the dosage of LDZ and increasing the dosage of ZL-B to fit with the temperature change. With the equal dosage of ZL-B ＋ LDZ to on-site ZL-B, and slurry temperature at 10 22, the concentrate tungsten grade is increased by 0.97 percentage points, but al- so the tungsten recovery raised by 25.67 percentage points.