二次铝灰中氮化铝的脱除与铝资源回收

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中图分类号：X758 文献标识码：A 文章编号：1008-9500(2025)07-0006-03

DOI:10.3969/j.issn.1008-9500.2025.07.02

Removal of Aluminum Nitride from Secondary Aluminum Ash and Aluminum Resource Recovery

ZHOU Yan

(Jiangsu Haiguang Metal Co.,Ltd.,Suqian 22370o,China)

Abstract:Aluminumash isasolid waste generatedduring thealuminum production process,andmostof the aluminum ashinChinaisdirectlystoredorburied,therefore,itisurgenttoeffectivelyutilizeandharmleslytreatauminumash.The maincomponentofsecondaryaluminumash isaluminumnitride,andtheremovalofaluminumnitridebecomes particularly important.Theexperiment mainlyuses deionized water to hydrolyzeand denitrifysecondaryaluminumash,and studies theeffctsofreactiontemperature,reactiontime,liquid-solidratioandotherfactorsonthedecompositioneffciencyof aluminum nitride.Research has shown that when the reaction temperature is 80qC ,the reaction time is 4h ,and the liquidsolid ratio is ,the secondary aluminum ash can achieve good denitrification effect.The loss rate of aluminum has significantlydecreased,ndtherecyclingrateofaluminumhassignificantlyimproved,providing technicalsupportforhe treatment of secondary aluminum ash in the same industry and further improving economic benefits.

Keywords:removal; secondary aluminumash; denitrification

铝具有密度低、延展性好、耐腐蚀、无磁性和易合金等优点，在汽车、航空航天等方面有着广泛的用途[1-2]。（剩余5428字）