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Trans. Nonferrous Met. Soc. China 28(2018) 169-176 Transformation and leaching kinetics of silicon from low-grade nickel laterite ore by pre-roasting and alkaline leaching process Wen-ning MU1,2, Xiu... April 2017 Abstract: The mineralogical phase transformation of a low-grade nickel laterite ore during pre-roasting process and the extraction of silicon during alkaline leaching process were investigated......
The low-grade nickel laterite ores used in this investigation was obtained from Yunnan province of China. Its chemical composition is shown in Table 1. It indicates that the major species of the laterites... segregation and magnetic separation of low-grade nickel laterites is shown in Fig.2. The low-grade nickel laterites had been crushed firstly. After drying, grinding and sieving, the ground ore had......
Engineering, Northeastern University, Shenyang 110819, China Received 29 July 2013; accepted 30 September 2013 Abstract: A low-grade nickel laterite ore was reduced at different reduction temperatures..., it is necessary to investigate the mechanisms of coal-based reduction of nickel laterite ore. In this study, the reduction of nickel from a low-grade nickel laterite ore was performed using coal-based......
, 2014, 14(4): 573-579. [17] ZHU De-qing, CUI Yu, HAPUGODA S, VINING K, PAN J. Mineralogy and crystal chemistry of a low grade nickel laterite ore[J]. Transactions of Nonferrous Metals Society... ammonium bisulfate[J]. The Chinese Journal of Nonferrous Metals, 2013, 23(2): 510-515. [13] LIU X W, FENG Y L, LI H R, YANG Z C, CAI Z L. Recovery of valuable metals from a low-grade nickel ore using......
Evolution of ferronickel particles during the reduction of low-grade saprolitic laterite nickel ore by coal in the temperature range of 900–1250℃ with the addition of CaO–CaF2–H3BO3Zulfiadi Zulhan... ferronickel at low temperature(1250–1400℃) has been applied since the 1950s at Nippon Yakin Kogyo,Oheyama Works, Japan.Limestone was used as an additive to adjust the slag composition for lowering......
">Ferronickel enrichment and extraction from nickel laterite ore were studied through reduction and magnetic separation. Reduction experiments were performed using hydrogen and carbon monoxide... that the nickel laterite ore contains a total iron content of 22.50wt% and a total nickel content of 1.91wt%. Its mineral composition mainly consists of serpentine, hortonolite, and goethite. During......
and nickel reduction in the roasting of a high-iron and low-nickel laterite ore through gas composition, X-ray diffraction, and scanning electron microscope analyses. Results showed that a reduction...Effects of Na2SO4 on iron and nickel reduction in a high-iron and low-nickel laterite oreXiao-ping Wang,Ti-chang Sun,Chao Chen,Jue KouKey Laboratory of Ministry of Education of China for Efficient......
Pressure nitric acid leaching of alkali-pretreated low-grade limonitic lateriteYong-Lu Zhang,Cheng-Yan Wang,Yong-Qiang Yang,Fei Yin,Bao-Zhong MaInstitute of Metallurgy, Beijing General Research Institute of Mining and Metallurgy摘 要:The pressure nitric acid leaching of alkali-pretreated low-grade limonitic laterite, as well as removing impurity Al(III......
is strong. The process is proved to be significant in exploitation and utilization of low-grade nickel laterite ores, which has some advantages, such as high efficiency, low power consumption and good...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......
laterite ore has poor microwave absorbing ability at low temperature[14], when being mixed with active carbon, the temperature of samples rapidly reaches approximately 1 000 ℃ in 6.5 min... Phase transformation in reductive roasting of laterite ore with microwave heating CHANG Yong-feng(畅永锋), ZHAI Xiu-jing(翟秀静), FU Yan(符 岩), MA Lin-zhi(马林芝), LI Bin-chuan(李斌川), ZHANG Ting-an(张廷安......
