Experimental Study on Particle Grading Priority of Waste Rock−Slurry Bonding Filling in Xifeng Phosphate Mine

LIU Defeng; XIONG Zhiyang; ZHENG Yantao; REN Jinhua; WANG Liangqun; ZHU Fuxing

doi:10.13779/j.cnki.issn1001-0076.2024.06.007

2024 Vol. 44, No. 6

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Article navigation > Conservation and Utilization of Mineral Resources > 2024 > 44(6): 103-112

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LIU Defeng, XIONG Zhiyang, ZHENG Yantao, REN Jinhua, WANG Liangqun, ZHU Fuxing. Experimental Study on Particle Grading Priority of Waste Rock−Slurry Bonding Filling in Xifeng Phosphate Mine[J]. Conservation and Utilization of Mineral Resources, 2024, 44(6): 103-112. doi: 10.13779/j.cnki.issn1001-0076.2024.06.007

Citation:

LIU Defeng, XIONG Zhiyang, ZHENG Yantao, REN Jinhua, WANG Liangqun, ZHU Fuxing. Experimental Study on Particle Grading Priority of Waste Rock−Slurry Bonding Filling in Xifeng Phosphate Mine[J]. Conservation and Utilization of Mineral Resources, 2024, 44(6): 103-112. doi: 10.13779/j.cnki.issn1001-0076.2024.06.007

Experimental Study on Particle Grading Priority of Waste Rock−Slurry Bonding Filling in Xifeng Phosphate Mine

1.
Wuhan Institute of Technology, Wuhan 430073, Hubei, China
2.
Guizhou Xi feng Phosphate Rock Corporation Limited, Guiyang 551100, Guizhou, China
3.
Guizhou Chemical Construction Co., Ltd., Guiyang 550001, Guizhou, China
4.
Guizhou Zijin Mining Co., Ltd., Southwest Guizhou Prefecture 562205, Guizhou, China

More Information

Corresponding author: ZHENG Yantao, zyt2021best@163.com

Received Date: 18 August 2024

Publish Date: 15 December 2024

Abstract

Abstract

To reduce the cost of filling and the potential safety hazards caused by the accumulation of waste rock in the waste dump, the waste rock−slurry cemented filling process is adopted in Xifeng Phosphorite Mine. Through a combination of research methods such as the response surface method, technical and economic analysis and microstructure characterization, the sensitivity of the main influencing factors was analyzed. Besides, the filling ratio parameters were optimized, and the mechanism of the hydration products was revealed. The research results indicated that the sensitivity of the influencing factors of the uniaxial compressive strength of the filling body is in the order of slurry concentration>cement to fly ash mass ratio > ash to rock ratio. Under the conditions of 55% slurry concentration, ash−to−rock ratio of 7∶20, and cement−to−fly ash ratio of 87∶100, the strength of the filling body reaches 10.60 MPa, saving a total cost of over 1.31 million yuan/100,000 t of filling material per year. The pore structure of the optimized filling bodies is filled with hydration products such as calcium silicate (C−S−H), calcium hydroxide (CH) and alumina (AFt) in combination with fly ash that is not involved in the hydration reaction. The microstructure is dense and has strong resistance to external compression damage. The research results can provide a theoretical basis and technical support for the safe mining of open−pit to underground filling.
- cemented filling /
- response surface method /
- waste rock /
- fly ash

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References

[1]	侯杰, 雷琼. 我国磷矿资源开发利用现状分析[J]. 磷肥与复肥, 2024, 39(5): 29−31+34. doi: 10.3969/j.issn.1007-6220.2024.05.012 CrossRef Google Scholar HOU J, LEI Q. Analysis of the current status of development and utilization of phosphate resources in China[J]. Phosphate and Compound Fertilizers, 2024, 39(5): 29−31+34. doi: 10.3969/j.issn.1007-6220.2024.05.012 CrossRef Google Scholar
[2]	赵玉凤, 李文超, 王海军. 中国磷矿资源开发利用现状与思考[J]. 产业创新研究, 2021(16): 62−63+69. Google Scholar ZHAO Y F, LI W C, WANG H J. Current status and reflection on the development and utilization of phosphate resources in China[J]. Industrial Innovation Research, 2021(16): 62−63+69. Google Scholar
[3]	邓久帅, 王亮, 王若含. 绿色矿山资源与环境平衡体系研究: 资源平衡篇[J]. 绿色矿山, 2024, 2(2): 130−135. Google Scholar DENG J S, WANG L, WANG R H. Research on the balance system of green mining resources and environment: Resource balance chapter[J]. Green Mines, 2024, 2(2): 130−135. Google Scholar
[4]	崔文瑞, 郑海平, 赵小五, 等. 中国绿色矿山建设进展研究及思考[J]. 能源与节能, 2024(5): 57−60. doi: 10.3969/j.issn.2095-0802.2024.05.017 CrossRef Google Scholar CUI W R, ZHENG H P, ZHAO X W, et al. Research and reflection on the progress of green mining construction in China[J]. Energy and Energy Conservation, 2024(5): 57−60. doi: 10.3969/j.issn.2095-0802.2024.05.017 CrossRef Google Scholar
[5]	于恩毅, 黄旭东, 王珍岐, 等. 废石掺量对胶结充填体强度及变形破坏的影响[J]. 金属矿山, 2020(8): 44−48. Google Scholar YU E Y, HUANG X D, WANG Z Q, et al. The influence of waste rock content on the strength and deformation failure of cemented filling materials[J]. Metal Mines, 2020(8): 44−48. Google Scholar
[6]	谭伟, 高忠, 黄明清, 等. 废石胶结充填相似模拟试验及其强度异质分布[J]. 矿业研究与开发, 2023, 43(6): 45−50. Google Scholar TAN W, GAO Z, HUANG M Q, et al. Similarity simulation test and strength heterogeneity distribution of waste rock cemented filling[J]. Mining Research and Development, 2023, 43(6): 45−50. Google Scholar
[7]	张静, 刘再涛, 李永新, 等. 全尾砂和废石联合胶结充填体最佳配比及应用[J]. 矿冶工程, 2020, 40(3): 10−14+19. doi: 10.3969/j.issn.0253-6099.2020.03.003 CrossRef Google Scholar ZHANG J, LIU Z T, LI Y X, et al. The optimal ratio and application of fully tailings and waste rock combined cemented filling material[J]. Mining and Metallurgy Engineering, 2020, 40(3): 10−14+19. doi: 10.3969/j.issn.0253-6099.2020.03.003 CrossRef Google Scholar
[8]	仝文慧, 朱万成, 牛雷雷. 废石尾砂胶结充填体断裂特性试验研究[J]. 金属矿山, 2021(12): 118−123. Google Scholar TONG W H, ZHU W C, NIU L L. Experimental study on fracture characteristics of waste rock tailings cemented filling body[J]. Metal Mines, 2021(12): 118−123. Google Scholar
[9]	戚亮, 李峥, 黄彦森. 不同骨料类型对充填体强度性能的影响及配比优化[J]. 金属矿山, 2022(12): 52−58. Google Scholar QI L, LI Z, HUANG Y S. The influence of different types of aggregates on the strength performance of filling materials and the optimization of proportioning[J]. Metal Mines, 2022(12): 52−58. Google Scholar
[10]	吴鹏, 王贻明, 吴爱祥, 等. 基于全面试验的钒铁矿开采充填材料配比优化研究[J]. 金属矿山, 2016(10): 5−10. doi: 10.3969/j.issn.1001-1250.2016.10.002 CrossRef Google Scholar WU P, WANG Y M, WU A X, et al. Research on optimization of filling material proportions for vanadium iron ore mining based on comprehensive experiments[J]. Metal Mines, 2016(10): 5−10. doi: 10.3969/j.issn.1001-1250.2016.10.002 CrossRef Google Scholar
[11]	SHI Y B, YE Y C, HU N Y, et al. Experiments on material proportions for similar materials with high similarity ratio and low strength in multilayer shale deposits[J]. Applied Sciences, 2021, 11(20): 9620. doi: 10.3390/app11209620 CrossRef Google Scholar
[12]	刘德峰, 崔晨冉, 郑彦涛, 等. 废石颗粒级配优化对充填材料性能的影响机制[J]. 有色金属(矿山部分), 2024, 76(5): 93−102. Google Scholar LIU D F, CUI C R, ZHENG Y T, et al. The influence mechanism of particle grading optimization of waste rock on the performance of filling materials[J]. Nonferrous Metals (Mining Section), 2024, 76(5): 93−102. Google Scholar
[13]	陈久昌, 姚清霞, 邱建民, 等. 响应曲面法优化MgO沉淀离子型稀土矿浸出液工艺[J]. 中国稀土学报, 2020, 38(5): 646−654. Google Scholar CHEN J C, YAO Q X, QIU J M, et al. Optimization of MgO precipitation ion type rare earth ore leaching solution process using response surface methodology[J]. Chinese Journal of Rare Earth, 2020, 38(5): 646−654. Google Scholar
[14]	刘立新, 黄彪林, 黄李金鸿, 等. 响应曲面法优化金精矿生物氧化渣非氰浸金过程[J]. 矿冶工程, 2022, 42(4): 100−105. doi: 10.3969/j.issn.0253-6099.2022.04.024 CrossRef Google Scholar LIU L X, HUANG B L, HUANG L J H, et al. Optimization of non cyanide leaching process of gold concentrate bio oxidized slag using response surface methodology[J]. Mining and Metallurgy Engineering, 2022, 42(4): 100−105. doi: 10.3969/j.issn.0253-6099.2022.04.024 CrossRef Google Scholar
[15]	李林香, 谢永江, 冯仲伟, 等. 水泥水化机理及其研究方法[J]. 混凝土, 2011(6): 76−80. Google Scholar LI L X, XIE Y J, FENG Z W, et al. Cement hydration mechanism and its research methods[J]. Concrete, 2011(6): 76−80. Google Scholar