Efficient Utilization of Nickel Laterite to Produce Master Alloy

被引：31

作者：

Ma, Xiaodong ^{[1
]}

Cui, Zhixiang ^{[2
]}

Zhao, Baojun ^{[1
]}

机构：

[1] Univ Queensland, Brisbane, Qld 4072, Australia

[2] Dongying Fangyuan Nonferrous Met Co Ltd, Dongying 257091, Peoples R China

来源：

JOM | 2016年 / 68卷 / 12期

关键词：

SAPROLITE NI-ORE; ROTARY KILN; FERRONICKEL ALLOY; REDUCTION; GROWTH;

D O I：

10.1007/s11837-016-2028-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To lower the smelting temperature associated with the carbothermic reduction processing of laterite, the optimization of slag and alloy systems was investigated to enable the reduction of laterite ore in the molten state at 1723 K. The master Fe-Ni-Mo alloy was successfully produced at a lower temperature ( 1723 K). The liquidus of the slag decreased with the addition of oxide flux ( Fe2O3 and CaO) and that of the ferronickel alloy decreased with the addition of Mo/MoO3. More effective metal-slag separation was achieved at 1723 K, which reduces the smelting temperature by 100 K compared with the current electric furnace process. A small addition of Mo/MoO3 not only decreased the melting point of ferronickel alloys but also served as a collector to aggregate the ferronickel sponges allowing them to grow larger. The FeO concentration in the slag and the nickel grade of the alloy decreased with increasing graphite reductant addition.

引用

页码：3006 / 3014

页数：9

共 17 条

[1]

[Anonymous], IR NICK FE NI PHAS D

[2]

Dalvi A.D., 2004, PDAC INT CONVENTION, P27

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