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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 23(2013) 3428-3433 Coal-based reduction mechanism of low-grade laterite ore Yan-jun LI, Yong-sheng SUN, Yue-xin HAN, Peng GAO College of Resources and Civil 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......
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......
Publishing Centre, University of Science and Technology Beijing, B)Abstract:The dehydration mechanism and reduction process dynamics of laterite nickel ore were studied. The results indicate... place in the process of heating. The reduction of laterite nickel ore consists of three stages. Chemical reaction is the controlling unit in the first stage, the activation energies......
；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......
on the D optimality criterion. In the high-pressure sulfuric acid leaching (HPSAL) process for nickel laterite in "Rudjinci" ore in Serbia, the temperature, the sulfuric acid to ore ratio, the stirring...Computer modeling of high-pressure leaching process of nickel laterite by design of experiments and neural networksSrecko Stopic2,Bernd Friedrich2,Boban Stojanovic32. IME Process Metallurgy and Metal......
；钠盐；还原焙烧；镍铁 中图分类号:TF815 文献标志码:A Reduction roasting-magnetic separation mechanisms of nickelferous laterite ore in presence of sodium salts LI Guang-hui, RAO Ming-jun, JIANG... be obtained in the presence of both sodium sulfate and sodium carbonate. Key words: laterite ore; sodium salts; reduction roasting; ferronickel 不锈钢用镍约占全球镍消费总量的65%,不锈钢工业的迅速发展推动了镍的强劲需求.红土镍矿占有世界陆基镍资源的72%,是未来镍供应的主要......
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......
ferronickel from laterite ore using rotary hearth furnace or rotary kiln processes. This study aims to ameliorate sticking problems by using silicon dioxide(SiO2) to adjust the melting degree...Preparation of ferronickel from nickel laterite via coal-based reduction followed by magnetic separationLun-wei Wang1,Xue-ming Lü1,Zhi-xiong You1,Xue-wei Lü1,Chen-guang Bai11. College of Materials......
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... in order to get high nickel-content nickeliferous product. For these reasons, equilibrium condition of iron oxide when laterite ore was selectively reduced by CO2/CO, H2O/H2 and CO2/H2 was studied......
