Direct Reduction and Magnetic Separating Experiment of Nickel Slag for Iron Recovery
LU Feng-lin 1，GUO Yu-hua 2，ZHANG Ying-yi 2，GAO Jian-jun2
（1. Jiuquan Iron and Steel Group Co.， Ltd.， Jiayuguan 735100， Gansu， China 2. State Key Laboratory of Advanced Steel Processes and Products，Central Iron and Steel Research Institute， Beijing 100081）
Abstract：Direct reduction experiment and magnetic separating were carried out by using carbon-bearing pellets which were compacted by nickel slag and coal．The effects of different reduced temperatures，different C/O in pellets and basicity to the reduction results were investigated．The results show that the metallization degree can reach 98.72% when the direct reduction conditions are C/O in pellet 1.2，basicity 0.5，reduced temperature 1300℃ and time 20min．In 90min grinding metalized pellets getting under above conditions，the proportions of less than 0.074 mm powder reached from 95.6% to 46.9%，the TFe content of concentrate reduced from 78.82% to 74.01%，magnetic separating rate and recovery rate of iron increased from 51.77% and 79.02% to 70.92% and 89.80% respectively．The laboratory results show that it is feasible in process recycling iron resources in nickel slag by direct reduction and magnetic separating of carbon-bearing pellet．
收稿日期: 2013-08-16
出版日期: 2014-02-20
引用本文:
鲁逢霖，郭玉华，张颖异，高建军. 镍渣直接还原磁选提铁试验[J]. 钢铁, 2014, 49(2): 19-23.
LU Feng-lin ，GUO Yu-hua ，ZHANG Ying-yi ，GAO Jian-jun. Direct Reduction and Magnetic Separating Experiment of Nickel Slag for Iron Recovery. Iron and Steel, 2014, 49(2): 19-23.
2014, Vol. 49 
