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| Effect of Low Content Calcium Lignosulfonate Stabilized Red Clay on Radon Retardation |
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Received:May 04, 2022
Revised:May 16, 2022
Accepted:May 21, 2022
Published Online:September 16, 2022
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| DOI：doi：10.3969/j.issn.1007-7545.2022.10.016 |
| KeyWord:uranium mill tailings pond; calcium lignosulfonate; red clay; radon retardation |
| Author | Institution |
| HONG Chang-shou |
南华大学 |
| XIN Jia-yi |
南华大学 |
| LI Shao |
南华大学 |
| WANG Hong |
南华大学 |
| ZHONG Yong-ming |
南华大学 |
| LI Xiang-yang |
南华大学 |
| LIU Yong |
南华大学;深圳大学 |
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| Abstract: |
| In order to achieve long-term stability and reliability of the covered uranium mill tailings(UMTs) pond beach face, simulation studies were carried out applying a self-made experimental instrument of radon exhalation for soil overburden on the beach, aiming at a UMTs pond in humid location of southern China, to verify radon adsorption performance of calcium lignosulfonate(CaLS) through adsorption experiments. Experiments on enhanced radon retarding performance of CaLS-stabilized red clay were carried out. Effect of CaLS-stabilized red clay as soil overburden for radon retardation on the beach surface of the UMTs pond was studied, and the strength characteristics of CaLS-stabilized red clay was studied. The results show that CaLS has some radon adsorption properties. The radon retardation rate of 6 mass percent and 8 mass percent CaLS content is 9 percent and 12 percent respectively higher than that of red clay cover without CaLS. The strength of CaLS-stabilized red clay is enhanced within 0-6 mass percent content and slightly reduced between 6-8 mass percent, but the strength of soil is enhanced overall by the effect of CaLS. |
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