Experimental research on resource utilization of iron tailings powder in backfilling engineering
Abstract The goaf formed by mining and other activities is prone to safety hazards. Preparing high-quality and low-cost solidified iron tailings powder (SITP) is an important way to ensure backfill quality and eliminate safety hazards. Using iron tailings powder near the goaf of in Shanxi, comparati...
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-85546-6 |
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| author | Guo-Hua Yuan Yun-Shi Yao Pu-Gang Zhang Wei-Guo Hao Kun-Peng Huang Jin-Li Qing-Fang Shang |
| author_facet | Guo-Hua Yuan Yun-Shi Yao Pu-Gang Zhang Wei-Guo Hao Kun-Peng Huang Jin-Li Qing-Fang Shang |
| author_sort | Guo-Hua Yuan |
| collection | DOAJ |
| description | Abstract The goaf formed by mining and other activities is prone to safety hazards. Preparing high-quality and low-cost solidified iron tailings powder (SITP) is an important way to ensure backfill quality and eliminate safety hazards. Using iron tailings powder near the goaf of in Shanxi, comparative experiments were conducted to evaluate the the flowability, stone rate, strength, and water stability of newly mixed SITP under different types and dosages of curing agent, and mixing methods. The results show that under the premise of keeping the fluidity constant, the strength of the ITP slurry increases with the increase of the curing agent content; At the same strength, the water consumption significantly affects the fluidity; When using 8%~16% different curing agent dosage, the expansion degree is 280 mm ~ 600 mm, the wet density is 1.9 g/cm3 ~ 2.1 g/cm3, the 28d strength after curing is 1.4 MPa ~ 3.7 MPa, and the stone rate is greater than 92%; The ITP slurry prepared by vibration mixing with a mixing time of 120 s and the amount of curing agent at 8% meets the engineering application requirements of 7d strength of 0.6 MPa and expansion of 250 mm. The research shows that the iron tailings powder slurry prepared by vibration mixing has high strength after solidification, and it is a new way of resource utilization of iron tailings powder with large consumption and good economy to be used for goaf backfilling. |
| format | Article |
| id | doaj-art-87b4c14857a143cb9e09ab50014c6188 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj-art-87b4c14857a143cb9e09ab50014c61882025-02-02T12:18:42ZengNature PortfolioScientific Reports2045-23222025-01-0115111110.1038/s41598-025-85546-6Experimental research on resource utilization of iron tailings powder in backfilling engineeringGuo-Hua Yuan0Yun-Shi Yao1Pu-Gang Zhang2Wei-Guo Hao3Kun-Peng Huang4Jin-Li5Qing-Fang Shang6Shanxi Transportation New Technology Development Co., LTDKey Laboratory of Highway Construction Technology and Equipment of Ministry of Education, School of Construction Machinery, Chang’an UniversityShanxi Transportation New Technology Development Co., LTDShanxi Transportation New Technology Development Co., LTDDetong Intelligent Technology Co., LtdSchool of Civil Engineering, Shandong Jiaotong UnivercityDetong Intelligent Technology Co., LtdAbstract The goaf formed by mining and other activities is prone to safety hazards. Preparing high-quality and low-cost solidified iron tailings powder (SITP) is an important way to ensure backfill quality and eliminate safety hazards. Using iron tailings powder near the goaf of in Shanxi, comparative experiments were conducted to evaluate the the flowability, stone rate, strength, and water stability of newly mixed SITP under different types and dosages of curing agent, and mixing methods. The results show that under the premise of keeping the fluidity constant, the strength of the ITP slurry increases with the increase of the curing agent content; At the same strength, the water consumption significantly affects the fluidity; When using 8%~16% different curing agent dosage, the expansion degree is 280 mm ~ 600 mm, the wet density is 1.9 g/cm3 ~ 2.1 g/cm3, the 28d strength after curing is 1.4 MPa ~ 3.7 MPa, and the stone rate is greater than 92%; The ITP slurry prepared by vibration mixing with a mixing time of 120 s and the amount of curing agent at 8% meets the engineering application requirements of 7d strength of 0.6 MPa and expansion of 250 mm. The research shows that the iron tailings powder slurry prepared by vibration mixing has high strength after solidification, and it is a new way of resource utilization of iron tailings powder with large consumption and good economy to be used for goaf backfilling.https://doi.org/10.1038/s41598-025-85546-6Goaf backfillIron tailings powderFilling slurryVibration mixingStrengthExpansion |
| spellingShingle | Guo-Hua Yuan Yun-Shi Yao Pu-Gang Zhang Wei-Guo Hao Kun-Peng Huang Jin-Li Qing-Fang Shang Experimental research on resource utilization of iron tailings powder in backfilling engineering Scientific Reports Goaf backfill Iron tailings powder Filling slurry Vibration mixing Strength Expansion |
| title | Experimental research on resource utilization of iron tailings powder in backfilling engineering |
| title_full | Experimental research on resource utilization of iron tailings powder in backfilling engineering |
| title_fullStr | Experimental research on resource utilization of iron tailings powder in backfilling engineering |
| title_full_unstemmed | Experimental research on resource utilization of iron tailings powder in backfilling engineering |
| title_short | Experimental research on resource utilization of iron tailings powder in backfilling engineering |
| title_sort | experimental research on resource utilization of iron tailings powder in backfilling engineering |
| topic | Goaf backfill Iron tailings powder Filling slurry Vibration mixing Strength Expansion |
| url | https://doi.org/10.1038/s41598-025-85546-6 |
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