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Kinetics study of leaching arsenic from Ni-Mo ore roasting in dust mixture of hydrochloric and sulfuric acidsHOU Xiao-chuan(侯晓川)1, 2, YANG Yun-de(杨润德)1, LI He(李贺)1, ZENG-li(曾理)2, XIAO Lian-sheng(肖连生... of leaching arsenic from Ni-Mo ore roasting dust was investigated. The effects including leaching temperature, particle size of the smelter dust, stirring speed, the coef？cient β (the molar ratio of sodium......
Kinetics of acid-oxygen leaching of low-sulfur Ni-Cu matte at atmospheric pressure FAN Chuan-lin(范川林), LI Bin-chuan(李斌川), FU Yan(符 岩), ZHAI Xiu-jing(翟秀静) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China Received 6 July 2009; accepted 5 January 2010 Abstract: The leaching of low-sulfur Ni-Cu matte in acid-oxygen (CuSO4-H2SO4-O2) solution......
J. Cent. South Univ. (2016) 23: 1312-1317 DOI: 10.1007/s11771-016-3181-2 Coordination leaching of tungsten from scheelite concentrate with phosphorus in nitric acid ZHANG Wen-juan(张文娟)1, YANG Jin... for tungsten extraction and recovery from scheelite is reported. The technology includes leaching scheelite using phosphoric acid as chelating agent in nitric acid solutions, extracting tungsten......
-Ti magnetite tailings using roasting and leaching[J]. The Chinese Journal of Nonferrous Metals, 2021, 31(6): 1611-1620. DOI: 10.11817/j.ysxb.1004.0609.2021-36561 钪属于广义的稀土元素,也是典型的稀散元 素[1].全世界钪储量约为200万... leaching 2.1.2 氯化镁用量对钪浸出的影响 由于精矿矿中含有Ca2+,Al3+,Na+等可被氯化的金属离子,若是氯化剂用量过少,那么ScCl3的产量也会相应减少,导致浸出率过低；但用量过大,又会造成药剂浪费,增加成本,因此,有必要分析氯化剂用量对钪浸出过程的影响. 进行相关试验分析氯化镁用量对钪浸出的影响,具体试验流程为:将MgCl2与钪粗精矿混合均匀加水制粒烘干后,在900......
and the apparent activation energy (Ea) of the leaching reaction is 34.067 kJ/mol, and the apparent reaction order of aluminum removal with pressure leaching is 0.346. The kinetic equations for the effect... the aluminum removal with very good agreement between experimental and calculated values. Key words: metallurgical grade silicon; pressure leaching; kinetics; purity; aluminum removal 基金项目:国家自然科学基金资助项目......
Leaching kinetics of molybdenum from Ni-Mo ore in sulfuric acid solution with sodium peroxodisulfate as oxidantLIU Zhi-xiong(刘志雄)1, YIN Zhou-lan(尹周澜)2, CHEN Yi-guang(陈义光)3, XIONG Li-zhi(熊利芝)3(1.... College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China)Abstract:The leaching kinetics of molybdenum from Ni-Mo ore in sulfuric acid solution with sodium......
; 明矾石加压酸浸工艺流程 Fig. 1 Flow chart of pressure acid-leaching of alunite ore 2 实验 2.1 实验原料 实验原料来自福建紫金山选铜尾矿中浮选得到的明矾石尾矿,矿样粒度分析结果见表1,其主要化学成分和XRD谱分析结果分别见表2和图2所示.实验所用硫酸为分析纯级98%H2SO4(质量分数),用水均为去...下钾,铝的浸出率 Table 3 Leaching rate of Al and K under different conditions 在浸出温度220 ℃,浸出时间180 min,酸矿比3:1,搅拌速率600 r/min的条件下,考察不同初酸含量对钾,铝浸出率的影响,结果如图4所示. 图3 酸矿比对铝,钾浸出率的影响 Fig. 3 Effect......
