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agent can be also recycled at room temperature and normal pressure. Key words: low-grade nickeliferous laterite ore; nickel; cobalt; reduction roasting; ammonia leaching; extraction low temperature ammonia leaching process was carried out to extract nickel and cobalt from low-grade nickeliferous laterite ore. 2 Experimental 2.1 Raw materials Low-grade......
laterite ores. First of all, silicon and magnesium were removed from lateritic ore by high concentration sodium hydroxide leaching and carbonation respectively, so as to enrich nickel. Then the method... were recycled, thus the process was a green technology that having good social benefit. Key words: nickeliferous laterite ore; kinetics; silicon; magnesium; nickel......
Pilot scale test of producing nickel concentrate from low-grade saprolitic laterite by direct reduction-magnetic separationZHENG Guo-lin(郑国林)1, ZHU De-qing(朱德庆)1, PAN Jian(潘建)1, LI Qi-hou(李启厚) 2...:low-grade saprolitic laterite; direct reduction; magnetic separation; pelletization; segmented grinding; nickel concentrate......
Leaching of nickel laterite ore assisted by microwave technique ZHAI Xiu-jing(翟秀静), WU Qiang(武 强), FU Yan(符 岩), MA Lin-zhi(马林芝), FAN Chuan-lin(范川林), LI Nai-jun(李乃军) School... loss of nickel in the jarosite precipitate. Key words: nickel laterite ore; leaching; microwave; jarosite; pre-treatment......
of nickeliferous limonitic laterite ores [J]. Minerals Engineering, 2004, 17(6): 775-784. [6] LEE H Y, KIM S G, OH J K. Electrochemical leaching of nickel from low-grade laterites [J]. Hydrometallurgy, 2005... mineralogy and low nickel content, the recovery of nickel from the nickel laterite ores is quite difficult directly [3-4], and the technology, which is economically viable, is limited. In the recent years......
J. Cent. South Univ. (2020) 27: 3278-3289 DOI: https://doi.org/10.1007/s11771-020-4546-0 Cations stress on low-grade nickel sulfide ore oxidation leaching KANG Jin-xing(康金星), WANG Xin(王鑫), WANG Ya... stress of magnesium ion and sodium ion on the low-grade nickel sulfide ore oxidative leaching in simulated sulfuric acid solutions were investigated. This study was performed in two courses, including......
of valuable metals from a low-grade nickel ore using an ammonium sulfate roasting-leaching process[J]. International Journal of Minerals, Metallurgy and Materials, 2012, 19(5): 377-383. [15] 刘欣伟, 冯雅丽... 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......
, the nickel is finally concentrated in different secondary minerals. The complex mineralogy and low nickel content of the nickeliferous laterite ores render beneficition almost impossible and the direct... leaching of nickel from low-grade laterites [J]. Hydrometallurgy, 2005, 77: 263-268. [3] McDONALD R G, WHITTINGTON B I. Atmospheric acid leaching of nickel laterites review (Part I): Sulphuric acid......
of Fe2O3 become stronger and finally become dominant as the temperature and time increased. Due to the high content of iron in laterite ore, the behaviors of nickel in this process are impossible... of a continuous autoclave [J]. Hydrometallurgy, 2000, 58: 89-101. [10] JOHNSON J A, MCDONALD R G, MUIR D M, TRANNE J P. Pressure acid leaching of arid-region nickel laterite ore (Part Ⅳ): Effect of acid loading......
">The recovery of nickel from laterite ore with sulphuric acid under the effect of microwave irradiation was studied.The experimental results indicated that the extraction rate of nickel was influenced...Microwave assisted atmospheric acid leaching of nickel from laterite oreCHE Xiaokuia,b,SU Xiuzhuc,CHI Ru’anc,and YU Junxiac a College of Resources and Civil Engineering,Northeastern University......
