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| Migration and Transformation Mechanisms of As and Sb during Co-sintering of As-Sb-bearing Dust and Arsenic-Alkali Residue |
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Received:September 11, 2021
Revised:September 18, 2021
Accepted:September 22, 2021
Published Online:December 17, 2021
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| DOI：doi：10.3969/j.issn.1007-7545.2022.01.005 |
| KeyWord:As-Sb-bearing dust; arsenic-alkali residue; co-sintering; As; Sb |
| Author | Institution |
| WANG Wen-xiang |
广东环境保护工程职业学院 |
| LI Wen |
Guangdong Polytechnic of Environmental Protection and Engineering |
| FANG Hong-sheng |
广东环境保护工程职业学院 |
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| Abstract: |
| 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 Na3AsO4, NaAsO2, and As2O5, while Sb is mainly solidified as the form of NaSbO3 and NaSbO2. |
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