Hydration Mechanisms of Gelled Paste Backfills for Potash Mines Using Lime as a Gel Material
Author Information
Author(s): Jin Rongzhen, Wang Xue, Ma Xuming, Huo Huimin, Zhang Siqi, Li Jiajie, Ni Wen
Primary Institution: University of Science and Technology Beijing
Hypothesis
This study investigates the feasibility of using lime as a gel in potash mine backfills and its effects on flow performance and mechanical properties.
Conclusion
The study demonstrates that lime can effectively enhance the flow and compressive strength of filling materials in potash mining.
Supporting Evidence
- Using lime as a gel enhances resource availability and lowers environmental carbon emissions.
- The hydration products vary with different lime dosages, affecting the strength of the filling material.
- Compressive strength increases with higher lime dosages and solid concentrations.
Takeaway
This research shows that using lime in potash mine backfills can make them stronger and easier to work with.
Methodology
The study involved testing the flow performance and compressive strength of gelled filling materials made from potash mine tailings and lime, using various lime dosages and solid concentrations.
Limitations
Further testing is needed to determine the exact solid concentration achievable with higher lime dosages.
Digital Object Identifier (DOI)
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