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Mechanism of CaO in direct reduction roasting of nickel laterite ore LIU Zhiguo1, SUN Tichang1, JIANG Man2, GAO Enxia1 (1. School of Civil and Environmental Engineering, University of Science... separation experiment was conducted on nickel laterite sample graded 1.46% Ni and 26.68% Fe, and X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses were conducted to to investigate......
laterite processing and electrowinning practice[J]. Minerals Engineering, 2002, 15(8): 593-605. [2] Pickles C A. Microwave heating behaviour of nickeliferous limonitic laterite ores[J]. Minerals.... [7] Senanayake G, Das G K. A comparative study of leaching kinetics of limonitic laterite and synthetic iron oxides in sulfuric acid containing sulfur dioxide[J]. Hydrometallurgy, 2004, 72(1/2......
分别为91.95%和67.96%;经黄钠铁矾法沉淀分离和焙烧工艺能够获得Fe品位为55.56%的氧化铁产品,且镍和铁的总回收率分别达到89.39%和67.46%.关键词:红土镍矿;浸出;镍;铁;综合回收Comprehensive recovery test of nickel and iron from nickel laterite oreCAO Zhan-fang, ZHONG Hong.... The total recovery of nickel and iron reaches 89.39% and 67.46%, respectively.Key words:nickel laterite ore; leaching; nickel; iron; comprehensive recovery......
, 2015, 25(5): 1332-1338. [5] POURNADERI S, KESKINKILIC E, GEVECI A, TOPKAYA Y A. Reducibility of nickeliferous limonitic laterite ore from Central Anatolia[J]. Canadian Metallurgical Quarterly, 2014...南大学学报(自然科学版), 2013, 44(1): 1-7. ZHU De-qing, ZHENG Guo-lin, PAN Jian, LI Qi-hou, AN Yue-ming. ZHU Jing-he, LIU Zhi-hong. Study of producing nickel concentrate from low-grade laterite ore[J]. Journal......
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] ......
; 文献标志码:A 文章编号:1672-7207(2011)08-2173-05 High recovery of ferro-nickel from low grade nickel laterite ore... University, Changsha 410083, China) Abstract: The process of one-step reduction roasting and magnetic separation was adopted to prepare ferro-nickel alloy from low-grade nickel laterite ore (w(Ni)=1.52%, w......
进口红土镍矿的检验现状及误差原因分析苏征1,杨立明1,张岳胜1,周润锋1(1.山东省日照市日照出入境检验检疫局)摘 要:分析2007年1月至2008年9月日照口岸进口红土镍矿的检验结果,从检验方法和贸易环节阐述国内外检验结果存在差异的原因,并就如何做好镍矿检验,维护镍矿贸易健康发展提出相关建议.关键词:分析化学; 红土镍矿; 综述; 检验; 贸易......
A. Drying kinetics of nickeliferous limonitic laterite ores[J]. Minerals Engineering, 2003, 16(12): 1327-1338. [11] 张友平, 周渝生, 李肇毅, 李维国. 红土镍矿资源特点和火法冶金工艺分析[J]. 铁合金, 2007(6): 18-21.ZHANG You-ping, ZHOU Yu...-desilication of laterite in NaOH sub-molten salt system ZHAO Chang-ming, ZHAI Yu-chun, LIU Yan, DUAN Hua-mei (School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China) Abstract......
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......
菲律宾红土镍矿液态还原研究潘成1,白晨光1,吕学伟1,胡途1,黄润1(1.重庆市重庆大学材料科学与工程学院)摘 要:为提高菲律宾红土镍矿金属回收率,改善熔炼条件,在实验室条件下采用正交试验研究了熔炼温度,配碳量及碱度对Fe,Ni回收率及合金中Fe,Ni含量的影响.试验结果表明,温度对Fe,Ni回收率影响最大,配碳量次之,碱度影响最小.温度为1 550℃,配碳量为6.0%,碱度为1.1时,Fe,Ni回收效果较好,回收率接近用Factsage进行计算所得到的理论值.对合金中Fe,Ni含量影响最大的是碱度,其次是温度......