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| Study on Influence of Red Mud Melting Iron Extraction on Cementitious Activity of Water Quenched Slag Cement |
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Received:February 18, 2022
Revised:February 28, 2022
Accepted:March 03, 2022
Published Online:August 11, 2022
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| DOI：doi：10.3969/j.issn.1007-7545.2022.09.020 |
| KeyWord:red mud; cement; melting; water quenching slag |
| Author | Institution |
| YANG Xue-wei |
中材建设有限公司 |
| AN Long-min |
中材建设有限公司 |
| ZHANG Ting-an |
东北大学冶金学院 |
| YE Jia-yuan |
中国建筑材料科学研究总院 |
| LYU Guo-zhi |
东北大学冶金学院 |
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| Abstract: |
| In order to verify the cementing performance and feasibility of water quenching slag in high-iron red mud through vortex reduction as a substitute for cement clinker, the basic properties of two slags, water-quenching slag (No.1) and non-water-quenching slag (No.2), were compared after high-temperature reduction of iron from red mud by random sampling. The National Standard （GB/T 18046—2017） was applied to conduct compressive and flexural experiments of cement mortar with ratios of 30% and 50% to verify performance of red mud high-temperature reduction iron-strength quenching slag as a cement clinker. The new method of "calcification-carbonization-moderate iron extraction" is adopted to treat low-grade bauxite and iron-containing red mud. The substitution amount of high-temperature water quenched slag in cement is 30% to 50%, and the activity index in cement is 99% above, which can completely be used as the main material of cement and can be used as a low-carbon environmental protection cementitious material. |
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