锡渣还原氯化焙烧—磁选回收有价金属试验  

Experiment on recovery of metals from tin slag by reductive chloride roasting and magnetic separation

作　　者：翟忠标[1,2,3] 牟兴兵 陈景 ZHAI Zhong-biao;MOU Xing-bing;CHEN Jing(Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;State Key Laboratory of Pressure Hydrometallurgical Technology of Associated Nonferrous Metal Resources,Kunming 650503,China;Kunming Metallurgical Research Institute Co.Ltd.,Kunming 650503,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093 [2]共伴生有色金属资源加压湿法冶金技术国家重点实验室,昆明650503 [3]昆明冶金研究院有限公司,昆明650503

出　　处：《矿冶》2020年第4期39-43,共5页Mining And Metallurgy

基　　金：云南省科技人才和平台计划项目(2019HB081)。

摘　　要：对某锡渣进行还原氯化焙烧—磁选回收有价金属试验。结果表明:还原氯化焙烧的最佳条件为:焙烧温度为1000℃,焙烧时间为50 min,还原剂用量为锡渣质量的20%,氯化钙用量为锡渣质量的10%,在此试验条件下,铁的磁化率为81.98%,铅的挥发率为98.88%,锌的挥发率为80.90%,锡的挥发率为96.73%。熟料磨矿细度为-75μm占100%,磁选磁场强度为0.2 T,可得品位为68.18%、回收率为72.03%的铁精矿。The experiment of recycling valuable metals from tin slag by reductive chloride roasting and magnetic separation was carried out.The results show that the optimum conditions are:the temperature 1000℃,time 50 min,reductant dosage 20%andcalcium chloride dosage 10%.Under the optimum conditions,the magnetic susceptibility of iron is 81.98%,the volatilization rate of lead is 98.88%,the volatilization rate of zinc is 80.90%,and the volatilization rate of tin is 96.73%.When the grinding fineness of product is-75μm accounting for 100%,and the magnetic field intensity is 0.2 T,a iron concentrate with Fe grade of 68.18%and recovery of 72.03%can be obtained.

关 键 词：还原氯化焙烧 磁选 锡渣 氯化钙 

分 类 号：X705[环境科学与工程—环境工程] X758