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| Study on time-dependent rheological parameters of unclassified tailings cemented slurry under motion state |
| Received:September 06, 2018 Revised:September 17, 2018 |
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| DOI： |
| KeyWord:unclassified tailings cemented slurry; rheological parameters; motion state; time-dependent |
| Author | Institution |
| 寇云鹏 |
1.山东黄金矿业股份有限公司; 2.山东黄金集团充填工程实验室 |
| 齐兆军 |
1.山东黄金矿业股份有限公司; 2.山东黄金集团充填工程实验室 |
| 盛宇航 |
山东黄金集团充填工程实验室 |
| 杜加法 |
山东黄金集团充填工程实验室 |
| 荆晓东 |
山东黄金集团充填工程实验室 |
| 宋泽普 |
山东黄金集团充填工程实验室 |
| 杨纪光 |
山东黄金集团充填工程实验室 |
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| Abstract: |
| Rheological parameters of unclassified tailings cemented slurry are time-dependent when the slurry is transported in pipeline. To simulate motion state in pipeline of the slurry, a method of continuous stirring was used. Using Brookfield rheometer, the changes of rheological parameters of unclassified tailings cemented slurry were analyzed under different mass concentrations and cement-sand ratio at different stirring time ,and the influence mechanism was also discussed. The results show that :(1) the yield stress and viscosity coefficient were increased with the rising stirring time as the concentration of slurry was 72%,74% and 76%,and the higher the concentration was, the more significant of rheological parameters influenced by stirring time;(2) With the rising stirring time, the yield stress and viscosity coefficient were also growth as the cement-sand ratio was 1:5,1:10 and 1:15. The increase of hydration time, the content of gel component which had coherency network structures in slurry increased continuously, which lead to the rheological parameters showing increasing trend. |
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