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Introduction Nickel can be produced from laterite ores by reduction-smelting process [1] or from sulfide ores by roasting-smelting process [2], and both of these processes generate slags, which will not only...Trans. Nonferrous Met. Soc. China 23(2013) 3421-3427 Utilization of nickel slag using selective reduction followed by magnetic separation Jian PAN, Guo-lin ZHENG, De-qing ZHU, Xian-lin ZHOU School......
红土矿含碳球团还原富集镍铁的工艺研究 石清侠1,邱国兴2 (1.长春黄金研究院,吉林,长春,130012;2.莱钢股份有限公司,山东,莱芜,271104) 摘要:为了解决低品位红土镍矿的合理利用问题,以活性炭粉为还原剂,采用直接还原富集-磁选分离技术,将矿石中的镍和铁直接还原制成金属镍和铁,并通过磁选分离使其得到富集.研究确定了最佳工艺条件为:配炭量4%,还原温度1350 ℃,焙烧时间120 min.此条件下,镍和铁的回收率分别为87.6%和95.3%. 关键词:红土镍矿; 直接还原; 磁选; 镍铁合金; nickel laterite ore; direct reduction; magnetic separation; ferronickel; [全文内容正在添加中] ......
engineering, machinery realm, military industry, chemical engineering, and other fields [1]. At present, the extraction of nickel from nickel sulfide ores constitutes the majority, especially in China... nickel sulfide ore, as important nickel resources, is one of the hot spots in nickel metallurgy attracting more and more attention [5-7]. Most of the low-grade nickel sulfide ores are polymetallic......
氢化物发生-原子荧光光谱法同时测定红土镍矿中砷锑铋何飞顶1,李华昌2,袁玉霞2(1.广西壮族自治区桂林市桂林理工大学2.北京矿冶研究总院,北京 100044)摘 要:采用氢化物发生-原子荧光光谱(HG-AFS)法测定红土镍矿中砷,锑,铋含量,并对影响其光谱测量的各种因素进行了较为详细的探讨.实验中,以王水水浴法溶解样品降低待测元素的挥发损失,以硫脲和抗坏血酸混合溶液为掩蔽剂来消除干扰元素的影响.方法的检出限在0.10~0.25 ng/mL之间;对红土镍矿样品中的砷,锑,铋进行分析,其回收率在91%~113%之间......
): 916-921. [5] Bergman R A. Nickel production from low-iron laterite ores: Process descriptions (vol 96, pg 137, 2003)[J]. Cim Bulletin, 2003, 96(1073): 67. [6] 曹志成, 孙体昌, 杨慧芬, 等. 红土镍矿直接还原焙烧磁选回收铁镍[J]. 北... of University of Science and Technology Beijing, 2010, 32(6): 708-712. [7] Zhu D Q, Cui Y, Vining K, et al. Upgrading low nickel content laterite ores using selective reduction followed by magnetic......
; 文献标志码:A 文章编号:1672-7207(2011)09-2571-06 Removal of impurities in atmosphere leaching liquor of nickel laterite by high temperature... consists chiefly of Fe2O3. The scale formed as a deposition in hydrolysis process consists of Fe2O3, NaAl3(SO4)2(OH)6 and FeOHSO4 and they are easily removed. Key words: nickel laterite; atmosphere leaching......
; 文献标志码:A 文章编号:1672-7207(2013)01-0001-07 Study of producing nickel concentrate from low-grade laterite ore ZHU Deqing1, ZHENG Guolin1, PAN Jian1, LI... ratio of coal to ore 2.7, grinding fineness of (95±4)% passing 0.074 mm and magnetic intensity of 131.34 kA/m, the enrichment of Ni and Fe is improved by preheating the briquettes of laterite ores......
reduction of the ore took place. In the reduction smelting process of producing ferronickel from the laterite ore, the causes of difficulty of separating ferronickel from slag and lower nickel recovery... of CaO to ore 8.3%, temperature 1 550 ℃ and time 40 min.. In the conditions, the ferronickel grade is 22%, recoveries of nickel and cobalt are 92.5% and 70.0%, respectively. Key words: laterite ore......
, Oustadakis P, et al. Hydrometallurgical process for the separation and recovery of nickel from sulphate heap leach liquor of nickeliferrous laterite ores[J]. Minerals Engineering, 2009, 22(14): 1181-1192..., 王晖, 符剑刚, 等. 从低品位红土镍矿中高效回收镍铁[J]. 中南大学学报: 自然科学版, 2011(8): 2173-2177. LIANG Wei, WANG Hui, FU Jiangang, et al. High recovery of ferro-nickel from low grade nickel laterite ore[J]. Journal of Central......
, Stevens L G, Auck Y T. Development of UOP process for oxide silicate ores of nickel and cobalt[C]//Evans D J I, Shoemaker R S, Veltman H. International Laterite Symposium. New York: SME-AIME, 1979...)05-1691-07 Enhancement of nickel extraction from laterite in hydrochloride acid through activated roasting LI Jin-hui1, 2, LI Xin-hai1, HU Qi-yang1, WANG Zhi-xing1, ZHOU You-yuan1, ZHENG Jun-chao1, WU......
