新型赤泥基充填材料的制备与性能研究

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (4): 1280-1285.

新型赤泥基充填材料的制备与性能研究

王旭东, 李伟斌, 赵君, 左楠楠, 史竹青, 王鹏程, 王维维, 高卫杰

阳泉煤业(集团)有限责任公司化工研究院,太原 030027

收稿日期:2020-10-09 修回日期:2020-12-15 出版日期:2021-04-15 发布日期:2021-05-11
作者简介:王旭东(1992—),男。主要从事新型矿用材料方面的研究。E-mail:xudong_wong@163.com

Preparation and Properties of New Packing Material Contained Red Mud

WANG Xudong, LI Weibin, ZHAO Jun, ZUO Nannan, SHI Zhuqing, WANG Pengcheng, WANG Weiwei, GAO Weijie

Chemical Research Institute, Yangquan Coal Industry (Group) Co., Ltd., Taiyuan 030027, China

Received:2020-10-09 Revised:2020-12-15 Online:2021-04-15 Published:2021-05-11

摘要/Abstract

摘要： 为弥补多数矿用充填材料因成本较高而在煤矿开采过程中存在的不足,并有效解决铝行业固废赤泥大量堆积、无法处理的现状,通过多种添加剂与主原料的有效掺和,开发出一种可用于煤矿井下沿空留巷充填工艺的新型赤泥基充填材料,并对其抗压强度、凝结时间、流动性以及稳定性等性能指标进行研究。结果表明:新型赤泥基充填材料单浆流动性好,凝结时间大于6 h;材料中的赤泥添加量可调控(质量分数在0%~50%);成型材料早强快硬,初凝时间仅为25 min,抗压强度1 d可达8.4 MPa,3 d可达10.3 MPa,7 d可达12.3 MPa;成型材料封膜浸渍长达14 d,浸出液pH值保持为6,赤泥组分中的碱性物质得到良好的固化,造成污染的概率低。

关键词: 充填材料, 赤泥, 流动度, 抗压强度, 凝结时间

Abstract: In order to make up for the shortage of most packing materials in the process of coal mining due to the high cost of packing materials, and effectively solve the current situation that a large number of solid waste red mud produced in the aluminum industry can not be treated, a new packing material contained red mud utilized in gob-side entry retaining technique was developed through the effective mixing of additives and main raw materials. The performance indexes including compressive strength, setting time, fluidity and stability were studied. The results indicate that the new packing material contained red mud has good single slurry fluidity, and its setting time is more than 6 h. The amount of red mud in the material can be adjusted, and its mass fraction ranges from 0% to 50%. The molding material has early strength and quick hardening, the initial setting time is only 25 min. The compressive strength in 1 d, 3 d, 7 d of packing material with optimum proportion of red mud and additives reaches 8.4 MPa, 10.3 MPa and 12.3 MPa, respectively. After the packing material coated with plastic film impregnates for 14 d, the pH value of leaching liquor keeps at 6, the alkaline substances in the red mud are solidified well, and the probability of pollution is low.

Key words: packing material, red mud, fluidity, compressive strength, setting time

中图分类号:

X705

王旭东, 李伟斌, 赵君, 左楠楠, 史竹青, 王鹏程, 王维维, 高卫杰. 新型赤泥基充填材料的制备与性能研究[J]. 硅酸盐通报, 2021, 40(4): 1280-1285.

WANG Xudong, LI Weibin, ZHAO Jun, ZUO Nannan, SHI Zhuqing, WANG Pengcheng, WANG Weiwei, GAO Weijie. Preparation and Properties of New Packing Material Contained Red Mud[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(4): 1280-1285.

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