摘要
针对碱浸-电解锌工艺,系统地研究杂质元素对锌电积过程的影响。分析表明,以满足生产四级锌粉标准(GB/T6890-2000)为限,电解液中可接受的杂质浓度范围为氯≤20g/L、次氯酸≤1‰(体积分数)、钨≤800mg/L、锡≤600mg/L、钼≤50mg/L。
The effects of impurities on the quality of the metallic zinc powder and the current efficiency in zinc alkaline leaching-electrowinning process are investigated. In order for the quality requirement for the zinc powder with metallic zinc over 88% into consideration （GB/T6890 -2000） , the maximum concentrations of impurities allowed are chlorine 20g/L, hypochlorous 1‰ （volume percentages）, tungsten 800 mg/L, stannum 600 mg/L and molybdenum 50 mg/L for the solution containing 35 g/L Zn and 250g/L NaOH.
出处
《有色金属》
CAS
CSCD
北大核心
2009年第3期76-79,共4页
Nonferrous Metals
关键词
冶金技术
锌电积
碱浸-电解锌工艺
杂质
metallurgical technology
zinc electrowinning
alkaline leaching-electrowinning process
impurity
