某氰渣工艺矿物学及金浮选工艺研究

针对某选矿厂氰渣进行了工艺矿物学研究，得出其中所含可回收利用的金属元素为Au，质量分数为2.51×10-6，主要包裹在黄铁矿和砷黄铁矿中。根据矿石性质，开展了单因素对浮选指标的影响试验，最终确定较适宜的浮选条件：矿石未磨，浓H2SO4除CN－，矿浆pH=6.5，CuSO4用量为150 g/t，丁铵黑药用量为70 g/t，丁基黄药用量为100 g/t，经过一次粗选、两次扫选、三次精选工艺试验，最终取得金精矿中金品位为18.70×10-6、回收率为70.18%的良好指标。

Study on the Gold Flotation Technology and Process Mineralogy of a Cyanide Residue

A detailed mineralogy process study of a cyanide residue was performed，and the valuable metal elements is gold with the content of 2.51×10-6，which is mainly contained in pyrite and arsenopyrite.Single factor flotation test was performed according to property of mineral ore.Eventually，achieving the grade of gold concentration is18.70×10-6 and recovery is 70.18% in suitable flotation conditions by adding CuSO4，ammonium dibutyl dithiophosphate and buylxanthate，whose dosage are 150×10-6，70×10-6 and 100×10-6，respectively，into the pulp in the test and cyanide residue without grinding，CN- excluded by H2SO4，and the pH of pulp is 6.5，and also performing one roughing，two scavenging and three times cleaning.