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从软锰矿与黄铁矿硫酸浸出渣中回收硫磺的研究 被引量:4
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作者 张启卫 章永化 《中国锰业》 2002年第1期8-10,共3页
研究了从软锰矿与黄铁矿在硫酸介质中浸出生产硫酸锰的浸出矿渣中提取回收硫磺的方法和条件。采用硫化铵溶液为浸提剂能有效地提取矿渣中的硫磺。以及讨论了浸提剂用量、浸提时间。
关键词 软锰矿 黄铁矿 硫酸浸出渣 回收 硫璜 硫酸
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Preparation of electronic grade manganese sulfate from leaching solution of ferromanganese slag 被引量:10
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作者 闫升 邱运仁 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第11期3716-3721,共6页
Preparation of electronic grade manganese sulfate from ferromanganese slag, including grinding, leaching and purification, was studied. The impurities, such as Fe3+, Al3+, Ca2+, Mg2+, heavy metal ions and Na+, K+, wer... Preparation of electronic grade manganese sulfate from ferromanganese slag, including grinding, leaching and purification, was studied. The impurities, such as Fe3+, Al3+, Ca2+, Mg2+, heavy metal ions and Na+, K+, were removed from leaching solution by neutralized-hydrolysis, fluorination precipitation, sulfuration precipitation and re-crystallization. Effects of pH of reaction, temperature and dosage of the different additives on removal rates of the metallic ions in leaching solution were investigated, and the suitable temperature, pH and the added amount of precipitating agent were obtained. The prepared manganese sulfate product, of which the mass fractions of Ca2+, Mg2+, Na+, K+ are all smaller than 0.005%, the mass fractions of Fe3+, Al3+ and heavy metal ions are smaller than 0.001%, and the mass fraction of Mn2+ is greater than 32%, can meet the demand of anode materials of lithium-ion batteries. 展开更多
关键词 ferromanganese slag LEACHING PURIFICATION manganese sulfate utilization of solid waste
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Pressure leaching of zinc silicate ore in sulfuric acid medium 被引量:11
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作者 李存兄 徐红胜 +3 位作者 邓志敢 李兴彬 李旻廷 魏昶 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2010年第5期918-923,共6页
Zinc silicate ore was characterized mineralogically and the results showed that zinc exists mainly as hemimorphite and smithsonite in the sample.Sulfuric acid pressure leaching of zinc silicate ore was carried out to ... Zinc silicate ore was characterized mineralogically and the results showed that zinc exists mainly as hemimorphite and smithsonite in the sample.Sulfuric acid pressure leaching of zinc silicate ore was carried out to assess the effect of particle size,sulfuric acid concentration,pressure,reaction time and temperature on the extraction of zinc and the dissolution of silica.Under the optimum conditions employed,up to 99.25% of zinc extraction and 0.20% silica dissolution are obtained.The main minerals in leaching residue are quartz and small amounts of undissolved oxide minerals of iron,lead and aluminum are associated with quartz. 展开更多
关键词 zinc silicate ore sulfuric acid pressure leaching extraction of zinc dissolution of silica
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Extraction of nickel from molybdenum leaching residue of metalliferous black shale by segregation roasting and acid leaching 被引量:4
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作者 楚广 赵思佳 杨天足 《Journal of Central South University》 SCIE EI CAS 2012年第2期340-346,共7页
The recovery of nickel from molybdenum leach residue by the process of segregation roasting-sulfuric acid leaching-solvent extraction was investigated. The residue was characterized by microscopic investigations, usin... The recovery of nickel from molybdenum leach residue by the process of segregation roasting-sulfuric acid leaching-solvent extraction was investigated. The residue was characterized by microscopic investigations, using X-ray fluorescence spectrometry (XRF) and X-ray diffractometry (XRD) techniques and the residue after segregation roasting was characterized by chemical phase analysis method. A series of experiments were conducted to examine the mass ratio of activated carbon (AC) to the residue, segregation roasting time and temperature, sulfuric acid concentration, liquid-to-solid ratio, leaching time, leaching temperature, addition amount of 30% H2O2, stirring speed (a constant) on the leaching efficiency of nickel. A maximum nickel leaching efficiency of 90.5% is achieved with the mass ratio of AC to the residue of 1:2.5, segregation roasting time of 2 h, segregation roasting temperature of 850 ℃, sulfuric acid concentration of 4.5 mol/L, liquid-to-solid ratio of 6:1, leaching time of 5 h, leaching temperature of 80 ℃, addition of 30% H202 of 0.6 mL for 1 g dry residue. Under these optimized conditions, the average leaching efficiency of nickel is 89.3%. The nickel extraction efficiency in the examined conditions is about 99.6%, and the nickel stripping efficiency in the examined conditions is about 99.2%. 展开更多
关键词 metalliferous black shale segregation roasting nickel leaching PC-88A solvent extraction
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