氰化尾渣资源化应用的清洁生产技术研究

以鑫汇金矿的氰化尾渣为研究对象，利用工艺矿物学研究方法，分别进行光谱分析、物相分析和化学分析. 氰化尾渣中w(Pb)和w(Zn)较高，分别达到12.45%和14.00%. 方铅矿和闪锌矿为可回收的铅锌矿物，2种矿粒度主要分布于10～43 μm. 针对方铅矿、闪锌矿的浮选特点，对矿浆进行预处理，并利用新型浮选技术和药剂制度，以提高选矿生产技术指标. 其中铅锌混合精矿中w(Pb)和w(Zn)分别为24.41%和24.55%，锌精矿中w(Zn)为46.63%. 在选矿废水中加入氧化剂，可使其净化后循环利用，由此可节约新鲜水380 m3/d；尾矿可作为制酸原料和水泥原料. 

Research on Clean Production Techniques in Utilizing Cyanide Tailings

Cyanide tailings of a Xinhui gold mine were analyzed by spectroscopicmethod, phase analysis method and chemical method. The results showed that w(Pb)and w(Zn) were high in the cyanide tailings, reaching 12.45% and 14.00%, respectively. Pb and Zn can be reclaimed from the galena and sphalerite; the two ore particles' sizes ranged between 10-43 μm. According to the characteristicsof the galena and the sphalerite, the pulp was pretreated, and new technology andpharmaceutical flotation system were used to improve the index for mineral processing technology. In the concentrated mixed lead and zinc mine, the Pb and Zn grades were 24.41% and 24.55%, respectively; in the concentrated zinc mine, theZn grade was 46.63%. Wastewater from mineral processing can be reused after treatment by oxidizer, which can save 380 m3/d of fresh water. In addition, the last tailings can be used for raw materials of acid and cement.