8th Annual International Conference 2018 on Science and Engineering | |
Optimal conditions for selective reduction process of Nickel Laterite Ore | |
工业技术(总论) | |
Nurjaman, F.^1 ; Sa'Adah, A.^2 ; Suharno, B.^2 | |
Research Unit for Mineral Technology, Indonesian Institute of Sciences, Lampung | |
35361, Indonesia^1 | |
Metallurgical and Materials Engineering Department, Faculty of Engineering Universitas Indonesia, Kampus Baru UI Depok, 16424, Indonesia^2 | |
关键词: Effect of temperature; Nickel laterite; Optimal conditions; Phase formations; Reduction process; Reduction reaction; Reduction temperatures; Selective reduction; | |
Others : https://iopscience.iop.org/article/10.1088/1757-899X/523/1/012068/pdf DOI : 10.1088/1757-899X/523/1/012068 |
|
学科分类:工业工程学 | |
来源: IOP | |
【 摘 要 】
A low-grade nickel laterite ore from Indonesia was selected to investigate the effect of temperature and time of reduction upon the extraction of nickel through the selective reduction-magnetic separation process to produce the ferronickel. The nickel ore was mixed with5 wt.% of anthracite coal and 10 wt.% of sodium sulfate additive. The mixed ore was pelletized into 10-15 mm of diameter. A series of selective reduction processes were carried out into the pellet ores at various temperatures of 950-1150 C for 60-120 minutes. The optimal selective reduction parameters of nickel laterite ore were observed clearly. The experimental results indicated that the reduction reactions proceed more completely at a higher temperature and longer reduction time. The optimum of nickel grade and recovery in the ferronickel concentrate was obtained at the reduction temperature of 1150 C for 120 minutes, which was 8.45% and 72.1%, respectively. The increasing of temperatures and times of reduction process resulted in higher of troilite phase formation which suppressed the iron metallization and also increased the ferronickel particle size.
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
Optimal conditions for selective reduction process of Nickel Laterite Ore | 696KB | download |