共搜索到3331条信息，每页显示10条信息，共334页。用时：0小时0分0秒465毫秒
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......
J. Cent. South Univ. Technol. (2010) 17: 765-769 DOI: 10.1007/s11771-010-0554-9 Extraction of valuable metals from low-grade nickeliferous laterite ore by reduction roasting-ammonia leaching method... nickeliferous laterite ore using a reduction roasting-ammonia leaching method. The reduction roasting-ammonia leaching experimental tests were chiefly introduced, by which fine coal was used......
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......
temperature and NaOH-to-ore mass ratio while decreasing particle size increases silicon extraction rate. The desiliconization kinetics of nickeliferous laterite ores in molten sodium hydroxide system..., NaOH-to-ore mass ratio and particle size, on the reaction rate, to optimize the conditions and determine the kinetics of the reaction. 2 Experimental 2.1 Materials The nickeliferous laterite......
">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......
Feasibility of co-reduction roasting of a saprolitic laterite ore and waste red mudXiao-ping Wang,Ti-chang Sun,Jue Kou,Zhao-chun Li,Yu TianSchool of Civil and Resource Engineering, University... in the future.Laterite ores especially the saprolitic laterite ore are one refractory nickel resource,the nickel and iron of which can be effectively recovered by direct reduction and magnetic......
]. In this process, nickel laterite ore was firstly treated by molten NaOH under atmospheric pressure, then the Na2SiO3 solution obtained was used for preparing silica products by carbonization, and the other..., ZHANG X, SHEN X Y, ZHAI Y C, XU D. Technology research on green metallurgy of high added value utilization of valuable elements in laterite nickel ore (Ⅰ)-Preparation of silica white using molten NaOH......
. Key words: laterite nickel slag; ammonium sulfate; roasting; nickel laterite ore 镍是一种重要的战略金属,具有优良的物理化学性质,被广泛应用于军工,机械,医疗等领域[1-2].近年来,随着红土镍矿火法冶炼镍铁合金规模逐步扩大,红土镍矿冶炼镍铁废渣(简称镍铁渣)的排放量逐渐增多.2015年,镍铁渣的总排放量将接近1亿t... of nickel and cobalt from nickel laterite ore by sulfation roasting method using ammonium bisulfate[J]. The Chinese Journal of Nonferrous Metals, 2013, 23(2): 510-515. [10] 段华美, 吕晓姝, 宁志强, 等. 利用硫酸铵焙烧工艺提......
">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... was effectively controlled during laterite ore reduction roasting, leading to iron mainly being found in wustite and high iron-containing olivine.关键词:......
