城市污泥掺量对煤气化渣陶粒性能影响

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (2): 579-586.

所属专题：资源综合利用

城市污泥掺量对煤气化渣陶粒性能影响

高育欣¹, 李坤杰², 马建峰¹, 高达¹, 杨文¹, 毕耀¹, 罗遥凌¹

1.中建西部建设建材科学研究院有限公司,成都 610015;
2.美国伊利诺伊理工大学斯图尔特商学院,芝加哥 60608

收稿日期:2020-09-25 修回日期:2020-11-11 出版日期:2021-02-15 发布日期:2021-03-10
通讯作者: 马建峰,工程师。E-mail:991461390@qq.com
作者简介:高育欣(1981—),男,高工。主要从事固废资源化、高性能混凝土方面的研究。E-mail:2058687168@qq.com
基金资助:
中建西部建设股份有限公司科技研发课题(ZJXJ-2019-14)

Influence of Municipal Sludge Dosage on Performance of Coal Gasification Slag Ceramsite

GAO Yuxin¹, LI Kunjie², MA Jianfeng¹, GAO Da¹, YANG Wen¹, BI Yao¹, LUO Yaoling¹

1. China West Construction Academy of Building Materials Co., Ltd., Chengdu 610015, China;
2. Stuart School of Business of IIIinois Institute of Technology, Chicago 60608, America

Received:2020-09-25 Revised:2020-11-11 Online:2021-02-15 Published:2021-03-10

摘要/Abstract

摘要： 以煤气化渣为主要原材料烧制陶粒,研究了陶粒的烧结制度以及城市污泥掺量对陶粒性能、孔结构影响及微观作用机制。结果表明:陶粒烧结制度为500 ℃预热30 min,1 100 ℃烧结15 min时,煤气化渣陶粒强度可达11.3 MPa,且烧结出污泥质量掺量为20%、筒压强度为6.7 MPa的轻质高强陶粒;城市污泥掺量改变了陶粒孔结构和孔径分布,陶粒孔隙率及平均孔径随着污泥掺量的增加而增大,陶粒内部结构变得疏松,使得陶粒吸水率增加、堆积密度减小,且对陶粒强度带来不利影响。

关键词: 煤气化渣陶粒, 污泥掺量, 烧结制度, 陶粒性能, 孔结构

Abstract: The coal gasification slag was used as the main material to sinter ceramsite, and the sintering system of ceramsite was studied. In addition, the influence of municipal sludge dosage on the basic properties, pore structure and microscopic mechanism of ceramsite were studied. The results show that the strength of coal gasification slag ceramsite is reached to 11.3 MPa when the preheating temperature 500 ℃ for 30 min and sintering temperature 1 100 ℃ for 15 min. The compressive strength of ceramsite is greater than 6.5 MPa when the municipal mass content is 20% in this sintering system. Besides, the porosity and average pore diameter of ceramsite increase with the increase of sludge content, and the internal structure of ceramsite became loose, which increases the water absorption rate, reduces the apparent density, and adversely affects the strength of the ceramsite.

Key words: coal gasification slag ceramsite, municipal sludge dosage, sintering system, ceramsite performance, pore structure

中图分类号:

TU526

高育欣, 李坤杰, 马建峰, 高达, 杨文, 毕耀, 罗遥凌. 城市污泥掺量对煤气化渣陶粒性能影响[J]. 硅酸盐通报, 2021, 40(2): 579-586.

GAO Yuxin, LI Kunjie, MA Jianfeng, GAO Da, YANG Wen, BI Yao, LUO Yaoling. Influence of Municipal Sludge Dosage on Performance of Coal Gasification Slag Ceramsite[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(2): 579-586.

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城市污泥掺量对煤气化渣陶粒性能影响

Influence of Municipal Sludge Dosage on Performance of Coal Gasification Slag Ceramsite

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