捕收剂对铅锌硫化矿浮选的影响及在矿浆中的浓度分布

研究了捕收剂对铅锌分选的影响 ,应用紫外光分光光度法测定矿浆中捕收剂的浓度。通过单矿物浮选及实际矿石浮选试验 ,考察了捕收剂对黄铁矿、方铅矿和闪锌矿浮选的影响 ,试验表明 ,对方铅矿来说 ,乙硫氮具有较好的选择性 ,而黄药对这三种矿石都具有较好捕收能力 ,因此 ,在实际生产中往往采用混合用药。通过捕收剂用量试验发现捕收剂用量必须加以合理控制 ,用量太大 ,会影响产品的质量 ,用量太小又会影响回收率乃至生产成本 ,因此对矿浆中的捕收剂浓度加以检测是必要的也是有意义的。利用紫外光分光光度法对现场的捕收剂浓度进行了检测 ,结果表明 ,对于同一个作业 ,尾矿产品的矿浆浓度大于精矿产品 ;对于精选作业来讲 ,其相应产品的药剂浓度随着流程前进逐步降低 ,对于粗选作业来说 ,规律相反 ,浓度随着流程前进逐步升高。

RESEARCH ON EFFECT OF COLLECTOR AGENT FOR LEAD ZINC SULFIDE MINERALS FLOTATION AND MEASUREMENT OF REAGENT CONCENTRATION DISTRIBUTION IN PULP

Froth flotation is a commonly used separation technique for sulfide minerals. The paper is focused on effect of collector on lead zinc separation. The ultraviolet spectrophotometer was employed to measure the collector concentration in pulp. In this paper, by the single mineral flotation test, batch flotation test was used to investigate the effect of collector on flotability of pyrite, galena and sphalerite. The result indicate that DDTC has good selectivity to act with galena, and xanthate has good collecting ability for three minerals. Therefore, in practice, these two reagent were used together. The experiment about reagent dosage showed that the dosage of collector have an important effect on quality and recovery of product. It suggested that controlling reagent dosage is necessary. The ultraviolet spectrophotometer was employed to measure the collector concentration in pulp. The result exhibit that for each single flotation procedure, the concentration in tail is bigger than the one in concentration. The reagent concentration in rougher and scavenger is bigger that the one in cleaning.