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="keys">Abstract: Zinc sulfate was produced in process of soaking blende with sulfuric acid of high concentration in oxygen and at normal pressure. The effects of leaching conditions..., and the oxygen flux through each liter leaching liquid 40~50 cm 3/min. [ Keyword: blende; zinc sulfate; soaking condition; Received: 1999-11-08 目前世界上80%的锌......
density electrolysis. 2 Experimental 2.1 Solution preparation All chemical reagents, i.e. zinc sulfate, cadmium oxide, copper sulfate, ammonium sulfate, sulphuric acid and ammonia were used... Selective separation of copper and cadmium from zinc solutions by low current density electrolysis YANG Bo(杨 卜), WANG Cheng-yan(王成彦), LI Dun-fang(李敦钫), YIN Fei(尹 飞), CHEN Yong-qiang(陈永强), WANG......
Table 1 Main ingredients of industrial zinc sulfate solution 1.3 氟离子的检测 控制不同的工艺参数:吸附时间t,溶液温度t,吸附剂添加量m和溶液pH(用稀H2SO4调节)来进行脱氟实验.取吸附后溶液的上清液稀释100倍,用氟离子计(PXSJ-216,上海仪电科学仪器股份有限公司)测量后计算得出剩余氟离子浓度... removal from zinc sulfate solution[J]. Guangzhou Chemical Industry, 2013, 41(24): 84-85. [11] 魏 昶, 李存兄, 邓志敢, 李兴彬. 含氟,氯硫酸锌溶液中锌与氟氯分离的方法: 中国, 201010584552.3[P]. 2011-04-20. WEI Chang, LI Cun-xiong, DENG Zhi......
为硫化物沉淀. 关键词: 单质铁; 酸性含锌废水; 硫酸盐还原菌 中图分类号: X751 文献标识码: A Treatment of acid zinc wastewater by sulfate reducing bacteria cooperated with iron CHANG Xiao-lei, KANG Yong, FENG Ying (School... and it is concluded that the removal of Zn2+ is mainly in terms of sulfide precipitate. Key words: iron; acid zinc wastewater; sulfate reducing bacteria 有色金属采矿, 选矿, 冶炼和加工过程中产生大量的酸性重金属废水, 其中含有大量的Zn, Cd, Cr, Cu, Hg......
J. Cent. South Univ. Technol. (2011) 18: 1074-1079 DOI: 10.1007/s11771-011-0806-3 Extracting indium and preparing ferric oxide for soft magnetic ferrite materials from zinc calcine reduction... for soft magnetic ferrite material was developed. Using reduction lixivium from high-acid reductive leaching of zinc oxide calcine as raw solution, copper and indium were firstly recovered by iron powder......
Trans. Nonferrous Met. Soc. China 27(2017) 1180-1187 Recovery of valuable metals from zinc leaching residue by sulfate roasting and water leaching Guo-min JIANG1,3, Bing PENG1,2, Yan-jie LIANG1,2, Li... 2017 Abstract: Zinc leaching residue (ZLR), produced from traditional zinc hydrometallurgy process, is not only a hazardous waste but also a potential valuable solid. The combination of sulfate roasting......
Trans. Nonferrous Met. Soc. China 27(2017) 2481-2491 Biological treatment of wastewater with high concentrations of zinc and sulfate ions from zinc pyrithione synthesis Zhi-xiong PENG1,2, Hui-jun... to treat wastewater from zinc pyrithione (ZPT) production, and the effects of different reaction parameters on sulfate reduction and zinc precipitation were evaluated. The single-factor experimental......
硝酸银光度法测定工业硫酸锌中痕量砷江秋月1(1.广东省韶关市广东韶关冶炼厂)摘 要:以聚乙烯醇为介质,硝酸银为显色剂,在乙醇体系中,采用分光光度法测定了工业硫酸锌中痕量砷.在1.8~3.6mol/L酸度下,硫酸锌中砷被锌粒还原成砷化氢气体逸出,用硝酸银-聚乙烯醇-乙醇溶液作为砷化氢的吸收剂,砷化氢将硝酸银还原成单质胶态银,在聚乙烯醇的作用下显黄色,其最大吸收峰位于400nm波长处,表观摩尔吸光系数为2.2×105 L·mol-1·cm-1,砷的质量浓度在0~0.6mg/L范围内符合比尔定律.方法用于工业硫酸锌样......
, causing decomposition of aqueous zinc sulfate electrolyte and deposition of metallic zinc onto the cathodes [2]. To guarantee the zinc deposition and achieve the desirable product indicators, high..., the concentrations of zinc ion and sulfate acid in electrolyte solution change gradually in horizontal axis direction. Therefore, we suppose that the electrolyte is well mixed along the longitudinal......
. 3 Relationship between solubility and temperature of magnesium sulfate[19] 图4 硫酸锌的溶解度与温度的关系[20] Fig. 4 Relationship between solubility of zinc sulfate and temperature[20] 图5...10 不同硫酸锌浓度下温度对硫酸锌结晶的影响 Fig. 10 Effect of temperature on crystallization of zinc sulfate under different zinc sulphate concentration 图11 不同硫酸锌浓度下温度对硫酸亚铁结晶的影响 Fig. 11 Effect......