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在有或没有α 氨基酸存在时 ,马铃薯淀粉和由马铃薯淀粉热分解制备的糊精可作为波兰工业铜铅精矿浮选分离中铅矿物的抑制剂。在没有抑制剂存在时 ,用巯基捕收剂浮选获得的最终工业精矿浮选分离中需要用多糖化合物。多糖化合物可抑制方铅矿 ,从而获得辉铜矿和其它硫化铜矿物富集的泡沫产品和含有铅矿物的槽内产品。在马铃薯淀粉热分解制备的普通糊精存在时 ,获得了最好的分离结果。工业浮选精矿含 18 5 %Cu和 5 5 %Pb ,经浮选分离后获得含 3 8 1%Cu的泡沫产品 ,铜回收率为 77% ,以及含 7 3 %Pb的槽内产品 ,其铅回收率为 83 %。浮选分离时的药剂制度为 :糊精2 5 0 0 g/t,乙基钾黄药 5 0g/t,起泡剂 (α -萜品醇 ) 5 0 g/t。浮选pH 8 0～ 8 2。
Potato starch and dextrin prepared from the thermal decomposition of potato starch can be used as inhibitors of lead minerals in the flotation separation of industrial copper-lead concentrates in Poland, with or without α amino acids. In the absence of inhibitors, polysaccharide compounds are needed in the flotation separation of the final industrial concentrate obtained with the sulfhydryl collector flotation. Polysaccharide compounds inhibit galena, resulting in chalcopyrite and other copper sulphide mineral-enriched foam products and in-tank products containing lead minerals. The best separation results were obtained in the presence of common dextrin prepared by the thermal decomposition of potato starch. The industrial flotation concentrates contain 18.5% Cu and 55% Pb. Foam products containing 381% Cu after flotation separation were obtained. The copper recovery was 77% and the product containing 7 3% Pb, Its lead recovery was 83%. Flotation separation of the drug system: dextrin 2500g / t, ethyl potassium xanthate 50g / t, foaming agent (α - terpineol) 50g / t. Flotation pH 8 0 ~ 8 2.