中南大学学报（自然科学版）2017，Vol.48Issue(8)：1972-1978,7.DOI:10.11817/j.issn.1672-7207.2017.08.002
采用(NH4)2SO4焙烧镍铁渣提取MgO
Recovery of MgO from laterite nickel slag through roasting by ammonium sulfate
摘要
Abstract
The circulation process of sulfation roasting laterite nickel slag using ammonium sulfate was designed to overcome the defects of traditional process,such as severe environmental pollution and resource waste.Through single factor experiment,the effects of roasting temperature,mass ratio of ammonium sulfate to ore,and roasting time on the extracting rate of MgO from the laterite nickel slag were investigated.Furthermore,the optimum technological conditions were determined by orthogonal experiment.The results show that the optimum technological conditions are as follows:roasting temperature of 450 ℃,mass ratio of ammonium sulfate to ore of 3.5∶1.0 and roasting time of 120 min.The extracting rate of MgO is stably over 90％ under the optimum conditions.The process is proved to be significant in exploitation and utilization of laterite nickel slag,which has some advantages,such as environmental friendly,low production cost and low pollution.关键词
镍铁渣/硫酸铵/焙烧/红土镍矿Key words
laterite nickel slag/ammonium sulfate/roasting/nickel laterite ore分类
矿业与冶金引用本文复制引用
赵昌明,蔡永红,宁哲,王国承,亢淑梅,张崇民,翟玉春..采用(NH4)2SO4焙烧镍铁渣提取MgO[J].中南大学学报（自然科学版）,2017,48(8):1972-1978,7.基金项目
国家重点基础研究发展规划(973计划)项目(2007CB613603) （973计划）
辽宁省化学冶金工程重点实验室开放课题基金资助项目(USTLKFSY201502)(Project(2007CB613603) supported by the National Basic Research Development Program (973 Program) of China Project(USTLKFSY201502) supported by the Open Research Fund of Key Laboratory of Chemical Metallurgy Engineering of Liaoning Province) （USTLKFSY201502）
