细粒黄金尾矿制备烧结砖的试验研究

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (8): 2653-2658.

细粒黄金尾矿制备烧结砖的试验研究

段旭晨, 孟凡涛, 魏春城, 李占冲, 穆清林, 刘哲坤, 王玉良

山东理工大学材料科学与工程学院,山东省高校先进复合材料重点实验室,淄博 255049

收稿日期:2021-03-11 修回日期:2021-04-02 出版日期:2021-08-15 发布日期:2021-09-02
通讯作者: 孟凡涛,副教授。E-mail:fantaomeng@sdut.edu.cn
作者简介:段旭晨(1997—),男,硕士研究生。主要从事固废处理的研究。E-mail:2286044269@qq.com
基金资助:
山东省自然科学基金(ZR2018MEM018)

Experimental Study on Preparation of Sintered Brick from Fine Gold Tailings

DUAN Xuchen, MENG Fantao, WEI Chuncheng, LI Zhanchong, MU Qinglin, LIU Zhekun, WANG Yuliang

Key Laboratory of Advanced Composites in Colleges and Universities of Shandong Province, School of Materials Science and Engineering, Shandong University of Technology, Zibo 255049, China

Received:2021-03-11 Revised:2021-04-02 Online:2021-08-15 Published:2021-09-02

摘要/Abstract

摘要： 为了解决细粒黄金尾矿的堆存对环境的污染和资源浪费问题,以细粒黄金尾矿为主要原料,添加膨润土、粉煤灰制备烧结砖。对原料基本成分分析后,采用模压成型法来制备烧结砖,主要研究焙烧温度、保温时间、以及物料的不同配比对烧结砖性能的影响。结果表明:最佳组成为尾矿75%(质量分数,下同),膨润土15%,粉煤灰为10%;最佳工艺条件为成型水分10%,成型压力20 MPa,焙烧温度1 175 ℃,保温时间50 min。在该条件下制备的烧结砖的抗压强度为38.71 MPa,抗折强度为10.54 MPa,体积密度为1.908 g/cm³,吸水率为3.5%。

关键词: 烧结砖, 黄金尾矿, 模压成型, 抗压强度, 抗折强度, 吸水率

Abstract: In order to solve the problem of environmental pollution and resource waste caused by the stockpiling of fine gold tailings, sintered bricks were prepared with fine gold tailings as the main raw material by adding bentonite and fly ash. The effects of sintering temperature, holding time and different proportion of materials on the properties of sintered bricks were studied. The results show that the optimal composition is 75% (mass fraction, same as bellow) of tailings, 15% of bentonite and 10% of fly ash. The optimum process conditions are 10% water content, 20 MPa forming pressure, 1 175 ℃ sintering temperature and 50 min holding time. The sintered bricks with compressive strength of 38.71 MPa, flexural strength of 10.54 MPa, volume density of 1.908 g/cm³, water absorption of 3.5% can be prepared by this process.

Key words: sintered brick, gold tailings, moulding, compressive strength, bending strength, water absorption

中图分类号:

TU522.1

段旭晨, 孟凡涛, 魏春城, 李占冲, 穆清林, 刘哲坤, 王玉良. 细粒黄金尾矿制备烧结砖的试验研究[J]. 硅酸盐通报, 2021, 40(8): 2653-2658.

DUAN Xuchen, MENG Fantao, WEI Chuncheng, LI Zhanchong, MU Qinglin, LIU Zhekun, WANG Yuliang. Experimental Study on Preparation of Sintered Brick from Fine Gold Tailings[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(8): 2653-2658.

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