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| P204萃取分离高铁粉煤灰硫酸浸液中铁铝 | |
| 引用本文： | 赵爱春,贺欣,张廷安,刘煜金,叶鑫,曾淼.P204萃取分离高铁粉煤灰硫酸浸液中铁铝[J].中国冶金,2022,32(4):126-131. |
| 作者姓名： | 赵爱春 贺欣 张廷安 刘煜金 叶鑫 曾淼 |
| 作者单位： | 1.太原科技大学材料科学与工程学院, 山西 太原 030024; 2.东北大学多金属共生矿生态化冶金教育部重点实验室, 辽宁 沈阳 110819; 3.辽宁省辽阳生态环境监测中心, 辽宁 辽阳 111018 |
| 基金项目： | 国家自然科学基金资助项目(U1710257); 山西省高等学校科技创新基金资助项目(2019L0656); 太原科技大学博士启动资金资助项目(20142001); 多金属共生矿生态冶金教育部重点实验室开放基金资助项目(2020002); 山西省基础研究计划资助项目(202103021224281) |
| 摘 要： | 粉煤灰是燃煤电厂发电所产生的主要固体废弃物,年产量及堆存量巨大.近些年越来越多的学者逐渐开始关注如何合理有效地处理粉煤灰.酸法是从粉煤灰中提取有价金属的主要途径之一,但由于Fe3+、Al3+化学性质相似,相互分离较为困难,因此成为限制资源化处理高铁粉煤灰的主要因素.以P204为萃取剂、260号溶剂油为稀释剂,对高铁粉煤... |
| 关 键 词： | 高铁粉煤灰 P204 铁铝分离 溶剂萃取法 FT-IR |
Extraction and separation of Fe3+ and Al3+ from sulfuric acid leaching solution of high-iron coal fly ash by P204 |
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| ZHAO Ai-chun,HE Xin,ZHANG Ting-an,LIU Yu-jin,YE Xin,ZENG Miao.Extraction and separation of Fe3+ and Al3+ from sulfuric acid leaching solution of high-iron coal fly ash by P204[J].China Metallurgy,2022,32(4):126-131. | |
| Authors: | ZHAO Ai-chun HE Xin ZHANG Ting-an LIU Yu-jin YE Xin ZENG Miao |
| Affiliation: | 1. School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi, China; 2. Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang 110819, Liaoning, China; 3. Liaoning Province Liaoyang Ecology and Environment Monitoring Center, Liaoyang 111018, Liaoning, China |
| Abstract: | As the main solid waste produced by coal-fired power plants, fly ash has a huge annual output and storage. In recent years, more and more scholars began to pay attention to how to effectively recycle fly ash. Acid leaching method is one of the main ways to extract valuable elements from fly ash. Due to the similar chemical properties of Fe3+ and Al3+, it is difficult to separate from each other, which has become the main factor restricting the resource treatment of high-iron fly ash. The separation of iron and aluminum from high-iron fly ash acid leaching solution (containing 14.644 g/L Fe3+ and 12.944 g/L Al3+) was studied by using P204 as extraction agent and 260# solvent oil as diluent. The results showed that when the volume fraction of P204 was 40%, the temperature was 60 ℃, the time was 20 min, the ratio of V(O): V(A) was 1:1, and the initial pH of the solution was 1.2, the extraction rate of Fe3+ was 92.2%, the extraction rate of Al3+ was less than 1%, and the good separation effect of iron and aluminum was achieved. The results of FT-IR detection showed that Fe3+ was extracted into the organic phase by combining with P-O-H and P=O bonds in the extraction process. The raffinate was evaporated and crystallized, and the production was determined as Al2(SO4)3 product by XRD. |
| Keywords: | high-iron coal fly ash P204 iron and aluminum separation solvent extraction FT-IR |
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