高砷锑氧粉和砷碱渣共焙烧过程中砷锑迁移转化机理  

Migration and Transformation Mechanisms of As and Sb during Co-sintering of As-Sb-bearing Dust and Arsenic-Alkali Residue

作　　者：王文祥 黎雯 方红生 WANG Wen-xiang;LI Wen;FANG Hong-sheng(Guangdong Polytechnic of Environmental Protection and Engineering,Foshan 528216,Guangdong,China;Foshan Engineering Technology Research Center for Safe Disposal and Comprehensive Utilization of Hazardous Waste,Foshan 528216,Guangdong,China)

机构地区：[1]广东环境保护工程职业学院,广东佛山528216 [2]佛山市危险废物安全处置与综合利用工程技术研究中心,广东佛山528216

出　　处：《有色金属（冶炼部分）》2022年第1期25-30,共6页Nonferrous Metals（Extractive Metallurgy)

基　　金：广东省基础与应用基础研究基金资助项目(2020A1515011007);广西重点研发计划项目(桂科AB19259004);2017广东普通高校创新团队项目(2017GKCXTD004)。

摘　　要：采用以废治废的思路,以砷碱渣为碱源加入到高砷锑氧粉中共焙烧,通过研究挥发气氛、烟尘及焙烧渣中组成成分和As、Sb含量,分析As、Sb转化迁移机理。研究表明,高砷锑氧粉和砷碱渣的共焙烧,能显著减少砷、锑的挥发;当高砷锑氧粉和砷碱渣的质量配比为1︰1时,砷的固化率由10%提高到85%;砷主要以Na_(3)AsO_(4)、NaAsO_(2)、As_(2)O_(5)的形式固定在焙烧渣中,锑主要以NaSbO_(3)、NaSbO_(2)的形式固定在焙烧渣中。With idea of treating the wastes with wastes,arsenic-alkali residue was used as alkali source and co-sintered with As-Sb-bearing dust.As and Sb content,and composition in volatilization atmosphere,dust and roasting residue were investigated to analyze migration and transformation mechanism of As and Sb.The results shows that co-sintering of As-Sb-bearing dust and arsenic-alkali residue can effectively reduce volatile of As and Sb.The solidifying efficiency of As is up to 85% when mass ratio of As-Sb-bearing dust and arsenic-alkali residue is 1︰1.As is mainly solidified as the form of Na_(3)AsO_(4),NaAsO_(2),and As_(2)O_(5),while Sb is mainly solidified as the form of NaSbO_(3) and NaSbO_(2).

关 键 词：高砷锑氧粉 砷碱渣 共焙烧 As SB 

分 类 号：TF81[冶金工程—有色金属冶金] X756[环境科学与工程—环境工程]