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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... and Engineering, Central South University, Changsha 410083, China;3. China Nonferrous Metal Mining(Group), Co., Ltd, Beijing 100029, China)Abstract:The enrichment of Ni from a low-grade saprolitic laterite......
提取率分别为95%,96%,92%,57%,79%,硫酸氢铵具有良好的硫酸化能力.该工艺具有效率高,能耗低,环境友好等特点,对低品位红土镍矿的开发利用具有重要 意义.关键词:红土镍矿；硫酸氢铵；硫酸化焙烧；循环机理Recovery of nickel and cobalt from nickel laterite ore by sulfation roasting method using...)Abstract:The circular technology of sulfation roasting nickel laterite ore using ammonium bisulfate was supposed to overcome the defect of traditional process, such as high power consumption and equipment......
of ferronickel from laterite ore in reduction smelting process LIU Zhi-hong1, MA Xiao-bo1, ZHU De-qing2, LI Yu-hu1, LI Qi-hou1 (1. School of Metallurgical Science and Engineering, Central South... of a humus type laterite ore with high silicon and magnesium, low iron contents were analyzed by DTA-TG method, thereby the temperature ranges were determined in which the reactions of dehydration and carbon......
Trans. Nonferrous Met. Soc. China 25(2015) 3133-3138 Thermodynamic of selective reduction of laterite ore by reducing gases Song CHEN, Shu-qiang GUO, Lan JIANG, Yu-ling XU, Wei-zhong DING Materials... viable as a source of nickel, increasing attention is being paid to the laterite ores. But in the pyrometallurgical process of laterite, more efforts should be paid to control the reduction of iron oxide......
nickeliferous laterite ore by prereduction-electric furnace smelting separationFAN Xing-xiang, DONG Hai-gang, WANG Yun-hua, WU Yue-dong, Li Bai-yu, LI Bo-jie, ZHAO Jia-chun, ZAN Lin-han(Kunming Institute... laterite ore was studied by rotary hearth furnace prereduction-electric furnace smelting separation. The results show that a SiO2-MgO-CaO-FeO slag style is chosen according to the characteristic......
from laterite by electric smelting[J]. Nonferrous Metals: Extractive Metallurgy, 2010(2): 2-5. [4] Georgiou D, Papangelakis V G. Sulfuric acid pressure leaching of a limonitic laterite: Chemistry and kinetics[J]. Hydrometallurgy, 1998, 49(1/2): 23-46. [5] Zuniga M, Parada F, Asselin E. Leaching of a limonitic laterite in ammoniacal solutions with metallic iron[J]. Hydrometallurgy, 2010, 104(2......
；直接还原；相变 中图分类号:TD925；TF55 文献标志码:A Effect of high-temperature phase transition of serpentine mineral on direct reduction roasting of laterite nickel ore LIU Zhi-guo, SUN Ti... and recrystallization will happen in the roasting process of serpentine mineral in the laterite nickel ore. To study the effect of phase transition of serpentine on the direct reduction of laterite......
Extraction and separation of nickel and cobalt from saprolite laterite ore by microwave-assisted hydrothermal leaching and chemical depositionYan Zhao1,Jian-ming Gao1,Yi Yue1,Ben Peng1,2,Zai-qing... Corporation摘 要:Extraction and separation of nickel and cobalt from saprolite laterite ore were studied by using a method of microwave-assisted hydrothermal......
Generation process of FeS and its inhibition mechanism on iron mineral reduction in selective direct reduction of laterite nickel oreZhi-guo Liu,Ti-chang Sun,Xiao-ping Wang,En-xia GaoSchool of Civil... the reduction of iron oxide in the selective reduction process of laterite nickel ore. FeS generated in the process plays an important role in selective reduction, but the generation process of FeS......
Two-stage reduction for the preparation of ferronickel alloy from nickel laterite ore with low Co and high MgO contentsYong-qiang Chen1,2,Hong-liang Zhao1,2,Cheng-yan Wang1,21. School...">The preparation of ferronickel alloy from the nickel laterite ore with low Co and high MgO contents was studied by using a pre-reduction–smelting method.The effects of reduction time,calcination temperature......
