新型捕收剂SCA在河南某白钨选矿厂的应用研究

针对白钨矿在低温高碱条件下粗选回收率低的难题, 开发了一种新型捕收剂SCA, 并在河南某白钨选矿厂进行了工业应用。结果表明, SCA比现场用捕收剂FX-6具有更优的白钨捕收性能和更强的耐低温、耐高碱性能; 在抑制剂Y1用量30 g/t、温度10 ℃、pH值11.0、SCA用量220 g/t条件下, 经一粗两扫闭路浮选, 可获得WO₃回收率79.95%的白钨粗精矿, 相比FX-6, 回收率提高了4.53个百分点; 工业应用中, 在捕收剂用量降低20.37 g/t条件下, 使用SCA时的WO₃回收率比使用FX-6时提高了2.76个百分点。SCA在低温高碱条件下对白钨矿的浮选指标较好, 具有广阔的工业应用前景。

Application of New Collector SCA in Scheelite Concentrator in Henan

Aiming at the problem of low scheelite recovery from roughing at low temperature with high alkalinity, a new type of collector, SCA, was developed and commercially applied in a scheelite concentrator in Henan. The results show that, compared to the existing used collector (FX-6), SCA possesses higher WO₃ collecting capacity and better adaptability to low temperature and high alkalinity. Under the following conditions, including the dosage of depressant Y1 at an amount of 30 g/t, pulp temperature of 10 ℃, pH value of 11.0 and SCA dosage of 220 g/t, a closed-circuit process consisting of one-stage roughing and two-stage scavenging can produce a scheelite concentrate with a WO₃ recovery of 79.95%, 4.53 percentage points higher than that by using FX-6. An industrial practice shows that WO3 recovery can be improved by 2.76 percentage points, and the collector dosage can be reduced by 20.37 g/t compared to the process with FX-6. It is concluded that SCA exhibits better performance in the scheelite flotation at low temperature with high alkalinity, and has broad prospect for industrial application.