用铝型材碱蚀废液制取氢氧化铝超细粉体

JOURNAL OF MATERIALS PROTECTION(2002)

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Abstract
采用晶析法再生铝型材碱蚀废液可制取氢氧化铝超细粉体,通过试验,优化了结晶温度、分解原液氧化铝浓度、分子比、晶种系数等,结果在分解原液Al-2O-3初始浓度105 g/L,苛性比1.6,晶种系数1.0,分解温度35 ℃,分解时间6 h的最佳操作条件下,铝回收率可达44.8%;采用低晶种系数(0.08~0.30)、苛性比1.6~1.9和6 h的分解周期,可控制制取粉体的平均粒径为11.1 μm.
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