云南某疑似重油性质低品位铅锌矿浮选试验研究

Experimental Study on One Suspected Heavy Oil Properties'Low Grade Lead-zinc Ore in Yunnan

油性物质与矿石中可浮性较好的方铅矿、白铁矿和黄铁矿形成絮团,絮团紧密不易分散,进而影响铅精矿品位的特点。采用“分散+脱药”联合机制进行选别。铅粗选采用2#油分选,铅粗精矿采用硅酸钠为分散剂,活性碳粉进行脱药,石灰对较易浮的白铁矿和黄铁矿进行抑制,采用少量乙硫氮进行捕收,产出合格铅精矿产品。在矿石含铅品位0.87%,含锌品位5.40%时,开路试验可获得铅精矿含Pb 55.20%、Zn 4.14%的合格铅精矿,铅回收率为89.83%,实现了矿石中铅金属的有效回收利用。

Oil substances and galena,marcasite,and pyrite with better flotability in ore can form flocculant,the flocculant is tight and not easy to disperse,so it will affect the grade of lead concentration.The joint mechanism of"dispersion+reagent removal"was adopted for selection.2#oil was adopted for separation of lead rough concentration;sodium silicate was adopted for lead rough concentration as a dispersant,the activated carbon powder was adopted for reagent removal,lime was adopted for inhibition of easy-to-floated marcasite and pyrite;a small quantity of diethyldithiocarbamate was adopted for collecting,to production of qualified lead concentration products.When a lead grade is 0.87%,and zinc grade is 5.40%contained in the ore,it can obtain qualified concentration that lead concentration with Pb 55.20%,Zn 4.14%,and the recovery rate of lead is 89.83%,it can realize available recycling utilization of lead metal.