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| Study of recycling blast furnace dust by magnetization roasting with straw charcoal as reductant | |
| Ju, Jinrong1,2,3; Feng, Yali1; Li, Haoran2,3; Zhang, Qian1 | |
| 2022 | |
| Source Publication | PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING
 |
| ISSN | 1643-1049 |
| Volume | 58Issue:3Pages:14 |
| Abstract | Blast furnace dust generated in the iron-making process not only contains a large amount of iron but also the widely used non-ferrous metal zinc, which is classified as hazardous waste. In this study, the process of recycling blast furnace dust by magnetization roasting with straw charcoal as the reductant is proposed, and the mechanism of magnetization roasting was explored through thermodynamic analysis, X-ray diffraction analysis, and thermogravimetric analysis. The results for the thermodynamic analysis showed that the reduction of blast furnace dust by the straw charcoal was feasible theoretically. The increase in the roasting temperature not only promoted the reduction of hematite (Fe2O3) but also reduced zinc ferrite (ZnFe2O4) to Fe3O4 and ZnO. The results showed that almost all Fe2O3 and ZnFe2O4 in the blast furnace dust were reduced to Fe3O4 and ZnO under the conditions of straw charcoal amount of 6%, the roasting temperature of 750 degrees C, and the roasting time of 60 min. Then, the iron concentrate with the iron recovery of 85.61% and an iron grade of 63.50% was obtained by the magnetic separation. Meanwhile, the grade of zinc in the iron concentrate was 0.19%. Finally, the flowsheet of simultaneously recovering iron and zinc from the blast furnace dust was put forward, which could realize that 85.61% of iron was recovered and 92.57% of zinc was extracted into the solution. |
| Keyword | blast furnace dust straw charcoal magnetization roasting hematite zinc ferrite |
| DOI | 10.37190/ppmp/149265 |
| Language | 英语 |
| WOS Keyword | ZINC ; IRON ; OPTIMIZATION ; MECHANISM ; RECOVERY ; SLUDGE |
| Funding Project | China Ocean Mineral Resources RD Association[JS-KTHT-2019-01] |
| WOS Research Area | Chemistry ; Mining & Mineral Processing |
| WOS Subject | Chemistry, Physical ; Mining & Mineral Processing |
| Funding Organization | China Ocean Mineral Resources RD Association |
| WOS ID | WOS:000791552800001 |
| Publisher | OFICYNA WYDAWNICZA POLITECHNIKI WROCLAWSKIEJ |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/53123 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Feng, Yali; Li, Haoran |
| Affiliation | 1.Univ Sci & Technol Beijing, Civil & Resource Engn Sch, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Key Lab Biochem Engn, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Ju, Jinrong,Feng, Yali,Li, Haoran,et al. Study of recycling blast furnace dust by magnetization roasting with straw charcoal as reductant[J]. PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING,2022,58(3):14. |
| APA | Ju, Jinrong,Feng, Yali,Li, Haoran,&Zhang, Qian.(2022).Study of recycling blast furnace dust by magnetization roasting with straw charcoal as reductant.PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING,58(3),14. |
| MLA | Ju, Jinrong,et al."Study of recycling blast furnace dust by magnetization roasting with straw charcoal as reductant".PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING 58.3(2022):14. |
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