摘要
提出了采用熔融还原工艺冶炼红土矿生产高镍含量(Ni>20%)镍铁合金的技术路线。通过查阅相图、热力学计算、熔渣热物性质测定,提出了高MgO渣型的冶炼方案,并验证了FeO-SiO_2-CaO-MgO-Al_2O_3五元渣系的冶金性能。分析了MgO对渣型的影响,结果表明,MgO含量21%~22%的渣型有较低的熔化温度和适宜的黏度;熔炼试验渣中NiO可控制到0.05%以下。
The process to produce ferronickel alloy with Ni〉25% by laterite ores smelting reduction under condition of high oxygen level was put forward. High MgO-bearing smelting slag was proposed based on phase diagrams, thermodynamic calculations, and slag thermophilic properties. Metallurgical properties of FeO-SiOz-CaO-MgO-Al2O3 pentad slag were verified and effect of MgO on slag was analyzed. The results show that the slag with MgO content of 19%-21% has low melting temperature and suitable viscosity. NiO content in slag can be controlled at 0.05 % below.
作者
刘畅
郑少波
LIU Chang ZHENG Shao-bo(State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai 200072, Chin)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2017年第7期11-15,共5页
Nonferrous Metals（Extractive Metallurgy)
关键词
熔融还原
MgO
红土镍矿
渣型
镍铁
smelting reduction
MgO
laterite ore
slag type
ferronickel
