氧化锌制备过程中废硫酸和含锌废渣的再利用  

Recycle use of waste sulfuric acid and waste residue containing zinc in preparing zinc oxide

作　　者：王洋[1] 李俊芬[1] 杜慧琳[1] 翟新宇[1] 张变香[1] 

机构地区：[1]山西大学化学化工学院,山西太原030006

出　　处：《山西化工》2011年第5期54-56,共3页Shanxi Chemical Industry

基　　金：山西省自然科学基金资助项目(2010011013-1);山西大学大学生创新实验项目(201009)

摘　　要：以含锌工业废渣为原料,通过用废硫酸酸浸除去铁、锰重金属等杂质,再经过滤、中和、沉淀、干燥,得到氧化锌。结果表明,当废硫酸和废渣质量比为1.5∶1.0、30℃恒温条件下,前躯体氢氧化锌经120℃～150℃干燥3 h～4 h、350℃煅烧3 h,可以得到质量分数为95.3%～97.5%的氧化锌。该工艺不仅使资源的回收再利用成为可能,而且降低了"三废"治理成本,提高了产品的市场竞争力。A process for the production of zinc oxide was explored using the zinc-containing industrial waste slag as raw materials.The waste slag was firstly dissolved in waste sulfuric acid followed by filtering to isolate the insoluble substance.Both oxidation method and substitution method can be used to remove the impurities contained in the aqueous solution.After that,the technology included several steps such as filtered,neutralization,precipitation,dry zinc oxide production process.Experimental results show that when the ratio of the waste sulfuric acid and the waste results is set 1.5∶ 1.0,the constant temperature is 30 ℃,body before zinc hydroxide was dried at 120 ℃~150 ℃ for 3 h^4 h,then calcined at 350 ℃ for 3 h,zinc oxide with a purity of the 95.3%~97.5% can be obtained.This process not only makes the recycle use of resources and reduces the treatment costs of the three wastes.

关 键 词：废硫酸 萃取 工业废渣 氧化锌 

分 类 号：TQ132.41[化学工程—无机化工]