工程科学学报2016，Vol.38Issue(6)：754-759,6.DOI:10.13374/j.issn2095-9389.2016.06.002
硫酸钠对高铁型红土镍矿中铁矿物还原的抑制机理
Inhibition mechanism of iron mineral reduction in high iron type laterite nickel ore with the addition of sodium sulfate
摘要
Abstract
The inhibition mechanism of iron mineral reduction in laterite nickel ore with the addition of sodium sulfate was studied in the paper. It is found that sodium sulfate can change the reduction process of iron mineral, with FeS and aluminosilicates containing iron generated, and make the content of liquid phase in the roasted ore increase. The increase of liquid phase suppresses the coal gasi-fication reaction, weakens the reducing atmosphere, and inhibits the diffusion of reducing gas at the same time, which is adverse to iron mineral reduction. FeS and aluminosilicates wrapping around FeO restrains the reduction of FeO, and aluminosilicates can react with FeO to generate more liquid phase in the inhibition process, leading to a further inhibition of FeO reduction.关键词
镍矿处理/红土矿/硫酸钠/选择性还原/抑制机理Key words
nickel ore treatment/laterites/sodium sulfate/selective reduction/inhibition mechanisms分类
矿业与冶金引用本文复制引用
高恩霞,刘志国,孙体昌,王晓平..硫酸钠对高铁型红土镍矿中铁矿物还原的抑制机理[J].工程科学学报,2016,38(6):754-759,6.基金项目
高等学校博士学科点专项科研基金资助项目(20130006110017) （20130006110017）
