摘要
开展了锡中矿碳热还原硫化挥发法回收金属锡试验研究,重点考察了石灰石添加量、还原剂添加量、硫化剂添加量以及反应温度对锡挥发的影响。研究结果表明,最佳试验条件为添加18%石灰石,6.3%焦粉还原剂,4.6%硫化剂,反应温度为1250~1300℃,挥发时间达6 h后,渣含锡可降低至0.15%左右,锡挥发率达98%以上。
Experiment study on tin recovery from tin middling product by carbothermic reduction and sulfidizing volatilization was carried out. Influence factors such as limestone addition, reducing addition, curing agent and re- action temperature have been mainly analyzed. The results show that the optimum experiment conditions of tin re- covery are 18% limestone, 6.3% coke powder as reducing agent, 4.6% curing agent and 1250 ~ 1300 ~C reaction temperature, Tin content in the slag can be reduce to 0. 15% , with tin volatilization rate attain above 98% after 6 h volatilization time.
出处
《矿冶》
CAS
2015年第4期39-42,共4页
Mining And Metallurgy
关键词
碳热还原
硫化挥发
锡中矿
锡
carbothermic reduction
sulfidizing volatilization
tin middling product
tin
