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金   海¹ , 司美艳¹ , 张云涛¹ , 李青松^1,2

 

(1. 贵州省煤矿设计研究院有限公司 , 贵阳   550025; 2. 贵州省矿山安全科学研究院有限公司 , 贵阳    550025)

摘  要: 为实现煤基固废和冶金废渣高附加值利用 , 研究以煤基固废 、冶金废渣为主要原料 , 添加膨润土和碳粉作为辅助原材料来探索制备透水石材的可行性 , 试样在 1 215~ 1 245 ℃ 的烧结区间进行制备 , 保温时间为

1 h, 在经过高温处理后可以形成良好的多孔结构 。通过 SEM 和 XRD 对试样的显微结构和物相进行分析观察。结果表明 : 试样的主要晶相为钙长石和少量的辉石相 , 煤基固废和冶金废渣作为主要原材料具有制备透水石材的可行性 。当冶金废渣掺量 53% , 煤基固废掺量 47%。冶金废渣的粒径范围在 0. 5~2. 0 mm 时 , 透水石材的孔隙率和抗压强度达到最优 。试样最佳烧结温度为 1 235 ℃ , 透水石材的透水系数为 0. 42× 10-2 cm/s, 抗压强度为16. 5 MPa, 孔隙所占百分比为 19. 5%。为大宗工业固废的资源化处置提供技术参考 , 实现煤基固废和冶金废渣的协同利用。

关键词: 煤基固废 ; 冶金废渣 ; 透水石材 ; 透水性

中图分类号: X752      文献标志码: A      文章编号: 1005-8249 (2026) 04-0008-07

DOI:10. 19860/j. cnki. issn1005-8249. 2026. 04. 002

 

Experimental Study on Sintered Permeable Stone Fabricated from Solid Waste

JIN Hai1 , SI Meiyan1 , ZHANG Yuntao1 , LI Qingsong1,2

(1. Guizhou Research Institute of Coal Mine Design Co. , Ltd. , Guiyang 550025, China;

2. Guizhou Mining Safety Scientific Research Institute Co. , Ltd. , Guiyang 550025, China)

Abstract : In order to achieve high value-added utilization of coal based solid waste and metallurgical waste residue, this paper studies the feasibility of using coal based solid waste and metallurgical waste residue as the main raw materials, and adding bentonite and carbon powder as auxiliary raw materials to explore the preparation of permeable stone. The samples are prepared in the sintering range of 1 215 ~ 1 245 ℃ , with a holding time of 1 hour.  After high-temperature treatment, a good porous structure can be formed. Analyze and observe the microstructure and phase of the sample through SEM and XRD. The results indicate that the main crystal phases of the sample are calcium feldspar and a small amount of pyroxene phase. Coal based solid waste and metallurgical waste as the main raw materials have the feasibility of preparing permeable stone. When the content of metallurgical waste slag is 53% , and the content of coal based solid waste is 47%. When the particle size range of metallurgical waste is between 0. 5~2. 0 mm, the porosity and compressive strength of permeable stone reach the optimal level. The optimal sintering temperature of the sample is 1 235 ℃ , the permeability coefficient of the permeable stone is 0. 42× 10-2 cm/s, the compressive strength is 16. 5 MPa, and the percentage of pores is 19. 5%. Provide technical reference for the resource utilization and disposal of bulk industrial solid waste, and achieve the synergistic utilization of coal based solid waste and metallurgical waste residue.

Key words: coal-based solid waste; metallurgical slag; permeable stone; permeability