铬精矿在焙烧过程中的行为研究  

Study on the Roasting Process of Chromium Concentrate

作　　者：朱华山[1] 谢刚[1] 张皓东[1] 李荣兴[1] 曾桂生[1] 

机构地区：[1]昆明理工大学材料与冶金学院,云南昆明650093

出　　处：《矿冶工程》2006年第5期57-60,共4页Mining and Metallurgical Engineering

摘　　要：研究了添加剂白云石和苏打、焙烧时间以及焙烧温度对铬精矿焙烧的影响,结果表明,添加适量的白云石和苏打可提高铬精矿的焙烧效率和铬的溶出率。合适的焙烧温度和焙烧时间对焙烧过程的进行和提高铬的溶出率有很重要的作用。通过焙烧过程分析表明,铬精矿中的含铬矿物与碳酸钠的反应较易进行,在1 000℃左右已基本反应完全。The influences of additives such as dolomite and soda, roasting time and process temperature on the roasting effect of chromium concentrate were studied. Experiment results show that appropriate amounts of dolomite and soda can promote the roasting efficiency of chromium concentrate and leaching ratio of chromium. The roasting time and process temperature also play important roles in the roast processing and chromium leaching. The analysis on roasting processes indicate that chromium-containing minerals in the chromium concentrate can react easily with sodium carbonate, and the reaction can be accomplished at around 1 000 ℃.

关 键 词：铬精矿 焙烧 反应 

分 类 号：TF111[冶金工程—冶金物理化学]