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(99.999%)调节氢气浓度和作为保护气. 表1 原矿的化学成分 Table 1 Chemical composition of laterite ores (mass fraction, %) 图1 硅镁型红土镍矿XRD谱 Fig. 1 XRD patterns of garnieritic laterite ore 1.2 还原...进行了证明[17-19].可见脱水过程会使矿物结构变化,发生了脱羟基反应和晶型转变. 图3 硅镁型红土镍矿的差热-热重曲线 Fig. 3 TG-DSC curves of garnieritic laterite ore 2.2 热力学基础 用氢气作为还原剂还原硅镁型红土镍矿,实质上是对矿物中的镍,铁氧化物进行还原,镍,铁氧化物在氢气还原过程中可能发生的反应及......
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......
on laterite nickel ore[J]. Materials Review, 2014, 28(5): 112-116. [3] 石剑锋, 王志兴, 胡启阳, 郭华军, 李新海, 彭文杰. 硫酸氢铵硫酸化焙烧法红土镍矿提取镍钴[J]. 中国有色金属学报, 2013, 23(2): 510-515. SHI Jian-feng, WANG Zhi-xing, HU Qi-yang, GUO Hua-jun, LI Xin-hai, PENG Wen-jie. Recovery 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......
% (vs mass of raw ore), reductant dosage of 6%(vs mass of raw ore) and heating rate of 5 ℃/min, the chloridizing segregation of nickel laterite ores from Philippines was carried out, and the phase... of laterite ore with microwave heating[J]. Transaction of Nonferrous Metals Society of China, 2008, 18(4): 969-973. [10] RHAMDHANI M A, HAYES P C, JAK E. Nickel laterite (Part 1): Microstructure......
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] ......
. The total recovery of nickel and iron reaches 89.39% and 67.46%, respectively.Key words:nickel laterite ore; leaching; nickel; iron; comprehensive recovery...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......
on the nickel extraction were examined. 2 Experimental 2.1 Material and method The lateritic ore came from the region, , Turkey. The raw material used in this work was a typical limonitic laterite ore with high... Yong. Physicochemical factors affecting leaching of laterite ore in hydrochloric acid [J]. Hydrometallurgy, 2012, 129/130: 14-18. [2] PARK K H, NAM C W. Status and prospect of nickel resources......
residues in the subsequent pressure acid leaching process. Key words: dechromization; dealumination; kinetics; Na2CO3-roasting pretreatment; laterite ore; nickel; cobalt 1 Introduction The superior... this type of laterite ore reserves of around 150 million. The results of the typical composition analysis by inductively coupled plasma-optical emission spectrometry (ICP-OES, Optima 5300DV......
Trans. Nonferrous Met. Soc. China 30(2020) 812-822 Efficient enrichment of nickel and iron in laterite nickel ore by deep reduction and magnetic separation Shuai YUAN, Wen-tao ZHOU, Yan-jun LI, Yue.... Nickel–iron particles can be effectively separated from gangue minerals by magnetic separation. Key words: laterite nickel ore; deep reduction; magnetic separation; nickel–iron concentrate; reduction......
, the leaching performance is relatively insensitive to the change of ascorbic acid concentration from 2 to 4 g/L which is highly desirable from operational perspective. Key words: laterite ore; Caldag lateritic nickel ore; synergistic reagent; ascorbic acid; nickel; cobalt 1 Introduction Laterite nickel ore is an increasingly important mineral resource for nickel and its valuable by-product, cobalt, due......
