Extraction of valuable metals from acidic wastewater and blast furnace slag by a collaborative utilization process
文献类型：期刊论文
| 作者 | Ju, Jinrong1,2,3; Feng, Yali1; Li, Haoran2,3; Xu, Chenglong1,2,3 |
| 刊名 | ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
 |
| 出版日期 | 2022-04-27 |
| 页码 | 16 |
| ISSN号 | 1932-2135 |
| 关键词 | acidic wastewater leaching low titanium-bearing blast furnace slag oxalic acid precipitation titanium phosphate |
| DOI | 10.1002/apj.2777 |
| 英文摘要 | Two typical wastes, acidic wastewater and titanium-bearing blast furnace slag, are generated in the smelting process of vanadium-titanium magnetite. Generally, the acidic wastewater is neutralized by lime or limestone and titanium-bearing blast furnace slag is directly stacked in the tailings pond, which not only pollutes the ecological environment but also causes the waste of metal resources. In this study, a collaborative utilization process for efficient extraction of titanium, iron, magnesium, and aluminum from acidic wastewater and low titanium-bearing blast furnace (LTBBF) slag was proposed. At the leaching temperature of 80 degrees C, the leaching time of 50 min, and the liquid-solid ratio of 9:1, 99.26% Ti, 99.47% Mg, and 99.45% Al could be extracted from LTBBF slag by acidic wastewater. Leaching residue mainly composed of Ca and Si could be used as silicon fertilizer. The Ti in the leaching solution could be separated by adding Na3PO4. The precipitation efficiency of Ti reached 98.53% under the molar ratio of Na3PO4 to TiO2 of 1.4, reaction temperature of 85 degrees C, and reaction time of 40 min. The titanium phosphate ((TiO)(2)P2O7) was obtained by calcination of the precipitate at 900 degrees C for 3 h. Adding oxalic acid to the filtrate above, the precipitation efficiency of Fe, Mg, and Mn reached 96.47%, 99.21%, and 99.45%, respectively, under the optimal conditions, while the precipitation efficiency of Al was only .38%. By adjusting the pH of the filtrate to 6.5, 99.83% Al could be precipitated as Al(OH)(3), and the final solution was evaporated to obtain Na2SO4 products. The method proposed realizes the harmless treatment of acidic wastewater and LTBBF slag and recovers the metal resources in both of them. |
| WOS关键词 | GLASS-CERAMICS ; SULFURIC-ACID ; CRYSTALLIZATION BEHAVIOR ; SELECTIVE ENRICHMENT ; TITANIUM-DIOXIDE ; TI ; KINETICS ; PRECIPITATION ; REDUCTION ; MECHANISM |
| 资助项目 | China Ocean Mineral Resources RD Association[JS-KTHT-2019-01] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000787731700001 |
| 资助机构 | China Ocean Mineral Resources RD Association |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/52884]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Feng, Yali; Li, Haoran |
| 作者单位 | 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, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ju, Jinrong,Feng, Yali,Li, Haoran,et al. Extraction of valuable metals from acidic wastewater and blast furnace slag by a collaborative utilization process[J]. ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING,2022:16. |
| APA | Ju, Jinrong,Feng, Yali,Li, Haoran,&Xu, Chenglong.(2022).Extraction of valuable metals from acidic wastewater and blast furnace slag by a collaborative utilization process.ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING,16. |
| MLA | Ju, Jinrong,et al."Extraction of valuable metals from acidic wastewater and blast furnace slag by a collaborative utilization process".ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING (2022):16. |
入库方式： OAI收割
来源：过程工程研究所
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