材料与冶金学报2026，Vol.25Issue(2)：159-165,7.DOI:10.14186/j.cnki.1671-6620.2026.02.008
铝灰烧结法制备Al(OH)3的工艺优化
Process optimization for Al(OH)3 preparation from aluminum dross using sintering method
摘要
Abstract
Al(OH)3 powder was synthesized from aluminum dross,and the effects of parameters such as sintering,leaching,and carbonation on the production of Al(OH)3 powder were investigated.FactSage software was utilized to analyze the potential reactions during sintering.The effects of alkali ratio(i.e.,the molar ratio of sodium in Na2CO3 to aluminum in aluminum dross),sintering temperature,and holding time on the leaching rates of aluminum and silicon during sintering,as well as the effects of CO2 volume fraction,gas flow rate and endpoint pH on the quality of Al(OH)3 powder during carbonation were studied by single factor experiments.The results indicate that the leaching rate of aluminum could reach 93.1％under the optimum conditions of an alkali ratio of 1.3,sintering temperature of 1 150 ℃,and holding time of 60 min.Under carbon content conditions of 40％CO2 volume fraction,4 L/min gas flow rate,and endpoint pH of 11,the prepared Al(OH)3 meets the requirements of grade AH-2 specified in standard GB/T 4294-2010.关键词
铝灰/氢氧化铝/片钠铝石/烧结法/碳酸化分解Key words
aluminum dross/aluminum hydroxide/dawsonite/sintering method/carbonation分类
矿业与冶金引用本文复制引用
吴凡,朱跃强,高涛,姜澜..铝灰烧结法制备Al(OH)3的工艺优化[J].材料与冶金学报,2026,25(2):159-165,7.基金项目
国家自然科学基金区域联合基金项目(U20A20239). （U20A20239）
