摘要
以烟煤为还原剂对贫锰铁矿进行了磁化还原焙烧研究，最佳焙烧条件为：焙烧温度600～750℃，焙烧时间60min，原矿粒度0．300-0．150mm，还原剂粒度-0．500mm、添加量12％-15％；焙烧料最佳浸出条件为：浓硫酸用量180ml/kg原矿，浸出时间60min，常温浸出。在此焙烧与浸出条件下，锰的浸出率大于90％，铁溶出率小于5％，铁的回收率大于80％。
Magnetic reduction roasting of low grade ferromanganese ore is carried out with soft coal as a reductant. It is found that the best conditions for the roasting are as the following： roasting temperature, 600 - 750 ℃ ; roasting time, 60 min; particle size of crude ore, 0. 300 -0. 150 mm; particle size of reductant, -0.500 mm; and coal addition, 12% - 15%. The best leaching conditions for the masted material are as follows： concentrated sulfuric acid, 180 mL/kg crude ore; leaching time, 60 min; and room temperature. Under the above masting and leaching conditions, better results can be obtained such as Mn leaching rate of more than 90% , Fe dissolution rate less than 5% and Fe recovery rate of more than 80%.
出处
《矿冶工程》
CAS
CSCD
北大核心
2009年第3期65-68,共4页
Mining and Metallurgical Engineering
关键词
还原焙烧
铁锰矿
浸出
磁选
reduction roasting
ferromanganese ore
leaching
magnetic separation
