|
| Preparation of Calcium Carbonate by Mineralization and Capture of CO2 from Aluminum Electrolysis Flue Gas with Carbide Slag |
|
Received:December 10, 2021
Revised:December 16, 2021
Accepted:December 20, 2021
Published Online:April 12, 2022
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2022.05.005 |
| KeyWord:aluminum electrolysis；carbon dioxide；carbide slag；mineralization; calcium carbonate |
| Author | Institution |
| QIN Zhi-xing |
桂林理工大学 材料科学与工程学院 |
| ZHANG Wei-guang |
桂林理工大学 材料科学与工程学院 桂林 |
| CAO Xue-jiao |
桂林理工大学 材料科学与工程学院 桂林 |
| XU Yan-qi |
桂林理工大学 材料科学与工程学院 桂林 |
| LI Yi-bing |
桂林理工大学 材料科学与工程学院 桂林 |
| CAI Zhen-lei |
武汉科技大学 国家环境保护矿冶资源利用与污染控制重点实验室 武汉;武汉科技大学 国家环境保护矿冶资源利用与污染控制重点实验室 武汉 |
| ZHANG Ting-an |
东北大学 |
|
| Hits: 1579 |
| Download times: 1951 |
| Abstract: |
| Behavior of carbon dioxide in aluminum electrolysis flue gas mineralized by calcium carbide slag was studied. The yield, composition, phase, morphology and particle size of calcium carbonate under different reaction conditions were investigated. The results show that CaCl2 concentration in dissolution solution can reach 0.37 mol/L when calcium carbide residue is pretreated with 2 mol/L ammonium chloride solution. The product yield rises with increase of stirring speed, gas flow and CO2 concentration. The purity of products can reach 98.7% above. There are two different crystal forms of calcium carbonate, i.e. graupel type and calcite type, and there is no impurity peak. The product is mainly micron spherical, and the particle size is D50=14—24 μm. |
| Close |