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利用蓄电池废硫酸和硼泥制备高品质氢氧化镁

Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2007-12-10

Journal: 无机盐工业

Included Journals: ISTIC、PKU

Volume: 39

Issue: 12

Page Number: 45-47

ISSN: 1006-4990

Key Words: 废铅酸蓄电池;废硫酸;硼泥;氢氧化镁

Abstract: 利用废铅酸蓄电池中的废硫酸作为浸取剂,对硼泥中的镁进行回收并制备出高品质的氢氧化镁产品.实验得出了酸浸硼泥的最佳工艺条件:酸浸温度为80℃;酸浸时间为30 min;酸用量为硫酸与硼泥质量比为1.2∶1.利用不同金属水解pH的不同,将酸浸过程中从硼泥和废硫酸中引入的杂质依次去除,得到精制硫酸镁溶液.由精制硫酸镁制取氢氧化镁的工艺条件为:常温下,沉淀剂为氨水,反应终点pH为11,反应时间为2 h,反应物在50℃下陈化12 h,过滤、洗涤后105℃烘干.实验考察了不同沉淀剂对氢氧化镁形貌的影响.所得氢氧化镁纯度在97%以上,粒径在0.1~1μm之间,各项指标均优于中国化工行业标准.

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