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复杂硫化铜精矿加压浸出动力学徐志峰1,严康1,李强2,王成彦2(1.江西省赣州市江西理工大学材料与化学工程学院2.北京矿冶研究总院,北京 100070)摘 要:在初始硫酸浓度1.23mol/L,液固比(mL/g)30/1,氧分压0.6MPa,搅拌转速度500 r/m in条件下,研究以黝铜矿为主要矿物的硫化铜精矿在408~453K温度范围内加压浸出动力学.结果表明,在浸出达到平衡之前,铜,锌,铁浸出率与浸出时间呈良好的线性关系.随温度升高,铜,锌浸出达到平衡所需的时间不断缩短,相对而言,锌浸出更早达到平衡.在4......
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Cunxiong, WEI Chang, FAN Gang, et al. Pressure acid leaching of high silicon zinc oxide ore[J]. The Chinese Journal of Nonferrous Metals, 2009, 19(9): 1678-1683. [7] 唐谟堂, 张鹏, 何静, 等. Zn(Ⅱ)-(NH4)2SO4-H2O体系... Nerin Engineering Co. Ltd., Jiangxi 330031, China) Abstract: The behaviors of silicon in the hydrochloric acid leaching of iron concentrate recovered from zinc kiln slag were investigated through both......
]. Hydrometallurgical methods are used to extract metallic values from low-grade ores [5-7]. Sulfuric acid is the most common lixiviant used for copper leaching [8-9]. However, acid leaching for the preponderance of carbonates in some ore deposits is not economical due to the excessive acid consumption. Some impurities dissolved in the acid solution bring about difficulties in the further treatment of the leaching......
of amount of sulfuric acid, mass fraction of sulfuric acid, reaction temperature and reaction time on the leaching rate of boric acid were studied. The results show that the leaching rate of boric... of sulfuric acid, concentration of sulfuric acid, reaction temperature and reaction time) on the leaching rate of boric acid (LRBA) from low-grade ascharite and the precipitation conditions of kieserite......
method was developed to synthesize Co3O4 nanoparticles using cobalt liquor obtained from the atmospheric pressure acid leaching process of nickel laterite ores. The effects of the precursor reaction...Synthesis and characterization of Co3O4 prepared from atmospheric pressure acid leach liquors of nickel laterite oresLong Meng1,2,3,Zhan-cheng Guo2,Jing-kui Qu1,3,Tao Qi1,3,Qiang Guo1,3,4,Gui-hua......
. LI Xuepeng, LIU Dachun, WANG Juan.Experimental and kinetic study on oxygen pressure acid leaching of indium from low-content indium-containing leaching residue[J]. Journal of Central South...多,体系中参与反应的氧分子增多,更有利于反应(3)~(7)的进行,进而促进窑渣中Cu的浸出. 图8 氧分压对Cu浸出率的影响 Fig. 8 Effect of oxygen pressure on Cu leaching rate 2.1.6 综合实验 通过前面实验选定污酸浸出窑渣中铜的综合条件:液固比为10 mL/g,温度为90 ℃,窑渣粒径为53~75 μm,转速为400 r/min,氧分......
Leaching vanadium by high concentration sulfuric acid from stone coal CHEN Xiang-yang(陈向阳)1, 2, LAN Xin-zhe(兰新哲)1, 2, ZHANG Qiu-li(张秋利)1, MA Hong-zhou(马红周)1, ZHOU Jun(周 军)1 1. School... from stone coals by high concentration sulfuric acid was researched. The effect of the concentration of sulfuric acid, leaching temperature, leaching time and helper leaching agent on the extraction......
between reduced ilmenite and oxygen in ammonium chloride solutions [J]. Hydrometallurgy, 1987, 18(1): 21-38. [7] SINHA H N, Hydrochloric acid leaching of ilmenite [C]//Proceeding of the Symposium... Trans. Nonferrous Met. Soc. China 22(2012) 1232-1238 TiO2 nanoparticles prepared by hydrochloric acid leaching of mechanically activated and carbothermic reduced ilmenite TAO Tao1, CHEN Qi-yuan1, HU......
An AES Study of Initial Oxidation of Ce-La Alloy at Room Temperature and Low Oxygen Pressure Jiang Chunli1,Wang Xiaolin1,Yang Jiangrong1,Lu Lei1,Zhou Wei1,Xiao Hong1 (1.China Academy of Engineering Physics, Mianyang 621900, China) Abstract:Auger Electron Spectroscopy was used to characterize the initial stages of the oxidation of Ce-5% La alloy in an oxygen atmosphere at low pressure( ~ 10-6......