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Optimization of selective copper extraction from chalcopyrite concentrate in presence of ammonium persulfate and ammonium hydroxideMehmet Deniz TuranDepartment of Metallurgical and Materials Engineering,F?rat University摘 要:The dissolution of copper and iron from chalcopyrite concentrate in the presence of ammonium persulfate(APS) and ammonium hydroxide......
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hydroxide (AACH) was synthesized as the precursor by the precipitation reaction of aluminum sulfate and ammonium carbonate. Then the precursor was calcined to get α-Al2O3 powder. The effect factors... with aluminum sulfate atomizing into ammonium carbonate, adding suitable amounts of PEG1000 as dispersant, and controlling the pH value over 8. The phase transformation of AACH in calcination process......
Effect of added cobalt ion on copper electrowinning from sulfate bath using doped polyaniline and Pb-Ag anodes HUANG Hui(黄 惠)1, ZHOU Ji-yu(周继禹)2, GUO Zhong-cheng(郭忠诚)1 1. Faculty... processes in a copper sulfate-sulfuric acid electrolyte. The oxygen-evolution potential for Pani anode is depolarised at lower current densities (≤0.01 A/cm2) and attains saturation at ρ(Co2+)o≈0.789 g/L......
J. Cent. South Univ. (2018) 25: 526-533 DOI: https://doi.org/10.1007/s11771-018-3757-0 Preparation of α-calcium sulfate hemihydrate whiskers with high aspect ratios in presence of a minor amount... Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018 Abstract: In order to produce α-calcium sulfate hemihydrate (α-CaSO4·0.5H2O) whiskers with high aspect......
要依靠静电力与白钨矿表面作用. 关键词:二辛基二甲基溴化铵；白钨矿；方解石；常温浮选；分离 中图分类号:TD95; TD923 文献标志码:A Flotation separation of scheelite and calcite at ambient temperature using new quaternary ammonium... of scheelite and calcite, the flotation separation of artificial mixed minerals with scheelite and calcite and the flotation of ores from Shizhuyuan by using dioctyl dimethyl ammonium bromide (DDAB) were......
出部分的铅,因此本文中计算硫酸铅渣中铅的浸出率时以可配位溶解的PbSO4为准. 研究中用到的其他化学试剂如乙酸铵为从汕头市西陇化工有限公司购得,均为分析纯级. 表1 硫酸铅渣主要化学成分 Table 1 Main element content of lead sulfate residue (mass fraction, %) 表2 硫酸铅渣中各物相含铅量 Table 2 Lead content of different phase in lead sulfate residue (mass fraction, %) 图1 硫酸铅渣原料XRD谱 Fig. 1 XRD pattens of lead sulfate residue 1.2 工艺流程 本试验研究工艺流程示意图如图2所示,硫酸铅渣通过乙......
ferriphium strain DY and Acidithiobacillus ferrooxidans strain GF are composed of jarosite and ammonium jarosite. However, the content of jarosite in the precipitates synthesized by strain GF is 5.53% higher than that synthesized by strain DY, but the content of ammonium jarosite in the precipitates synthesized by strain DY is 15.24% higher than that synthesized by strain GF. Key words: jarosite......
Influence of hydrolysis in sulfate process on titania pigment producing TIAN Cong-xue(田从学)1, 2, DU Jian-qiao(杜剑桥)1, CHEN Xin-hong(陈新红)1, MA Wei-ping(马维平)1, LUO Zhi-qiang(罗志强)1, CHENG Xiao-zhe(程晓...; Abstract: Using industrial titanyl sulfate solution as feedstock, titania white pigment was prepared by self-generated seeded thermal hydrolysis method......
Preparation of Agarose Sulfate and Its Antithrombogenicity揭油平,汤顺清Biomedical Engineering Institute, Jinan University摘 要:As one of the seaweed polysaccharide... of the insoluble agarose sulfate (below 37 ℃) were synthesized with degree of substitution (DS) being 0.17 and 0.43 respectively. Infrared spectroscopy (IR) and 13C nuclear magnetic resonance (13C-NMR......
