Experimental Study on the Rheological Properties and Pipeline Resistance of Filling Slurry Containing Modifiers in Phosphate Mines
Aiming at the technical challenges in the phosphorous mine in Hubei, China, such as, filling the long-distance and complex working conditions of coarse-grained tailings, the flow and long-distance pumping resistance characteristics of coarse-grained tailings filling slurry were studied by loop test...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2025-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/adce/5116030 |
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| Summary: | Aiming at the technical challenges in the phosphorous mine in Hubei, China, such as, filling the long-distance and complex working conditions of coarse-grained tailings, the flow and long-distance pumping resistance characteristics of coarse-grained tailings filling slurry were studied by loop test and numerical simulation method. The main innovations achieved in this study are as follows: (1) the CSKY01 filling modifier, Independently developed by Changsha Institute of Mining Research Co., Ltd., can significantly improve the flowability of the coarse-grained tailings’ total solid waste filling slurry, (2) the multi-loop full-scale loop test shows that the slurry flow resistance increased by about 4% to 13% after stopping the pump for 0.5 to 24 h and restarting, (3) the resistance loss along the pipeline was found to be directly proportional to the slurry transportation speed and inversely proportional to the pipeline’s cross-sectional area. A reasonable pipe diameter and flow rate for the transportation of filling slurry were determined through pipeline resistance loss and cost–benefit analysis, (4) a total solid waste filling system was constructed to handle long-distance and complex working conditions. The system achieved a filling speed of 80–100 m3/h, with a filling concentration of 82%–84%, and the slurry in paste form allows the filling system to run smoothly. A field industrial test confirmed that the strength of the stope filling-body R28 reached 4.2 MPa, which can meet the requirements of mining safety. This study successfully demonstrated the comprehensive utilization of all solid waste resources in phosphate mines, providing a promising idea for the green mining of phosphate mines. |
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| ISSN: | 1687-8094 |