Zinc acid-leaching residue contains silver of high grade,so the process of sulphation roasting-remove zinc and iron by water leaching-chlorination leaching silver-cooling-crystallization PbCl2-cementation silver with lead is used to extracting silver from it.
针对某锌冶炼厂高酸浸出渣含银高的特点,采用硫酸化焙烧—水浸脱锌铁—氯化浸银—冷却结晶PbCl2—铅片置换沉银工艺,对高酸浸出锌渣进行了回收银研究。
Development trend of Yunnan province's sulphuric acid and phosphorous fertilizer industries;
云南省硫酸磷肥工业的发展方向
Application of sulphuric acid in dewatering process of bauxite positive flotation concentrate;
硫酸在铝土矿正浮选精矿脱水工艺中应用的技术经济效果
Analysis of China's sulphuric acid production in 2006;
2006年我国硫酸生产情况
The as-calcined TiO2 nanometer thin film was treated in different H2SO4 aqueous solution for 24 h.
用溶胶-凝胶法制备均匀透明的TiO2薄膜,在400℃锻烧2h,再在一定浓度的硫酸中浸泡处理24h,最后在300℃、400℃、500℃进行第二次热处理0。
Our results suggest that pretreatment by H2SO4 removes 91.
研究结果表明,硫酸预处理的最优条件为:温度120℃,时间2h,硫酸浓度1%,粒度20-40目,液固比8:1,其中温度是最主要的影响因素。
Study on corrosion inhibition of naphthenic imidazoline derivative in H_2SO_4 solution;
环烷基咪唑啉衍生物在硫酸介质中的缓蚀性能研究
On Tech-Economics of Jointly Producing Cement and H_2SO_4 by Phos-gypsum;
磷石膏制硫酸联产水泥的技术经济问题
DETERMINATION OF URANIUM IN ORE WITH VOLUMETRY OF H_2SO_4-TiCl_3-NH_4VO_3;
硫酸-亚钛-钒酸铵容量法测定矿石中铀
Regeneration of the Cation Exchange Resin with Vitriol;
阳离子交换树脂的硫酸再生
介绍燃油开工炉在有色金属冶炼厂硫酸生产中的设计与应用情况,设计采用的燃油开工炉结构紧凑,操作方便,整体强度好,热利用率高。
The dissolving behavior of iron in bauxite tails in vitriol solution was studied.
结果表明,在一定的温度下,铝土矿中的赤褐铁矿能较好地溶于硫酸溶液中,而铝土矿中矿物等的性质不发生变化,这为铝土矿尾矿的进一步加工利用提供了条件。