Feasibility analysis on utilization of coal gangue as clay for cement

被引：4

作者：

Qiu G.-H. ^{[1
,2
]}

Xu Y. ^{[1
]}

Shi Z.-L. ^{[1
]}

Fang M.-X. ^{[1
]}

Luo Z.-Y. ^{[1
]}

Cen K.-F. ^{[1
]}

机构：

[1] State Key Laboratory of Clean Energy Utilization, Zhejiang University

[2] College of Communication Engineering, China Jiliang University

来源：

Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2010年 / 44卷 / 05期

关键词：

Calcine experiment; Cement clinker; Characteristic analysis; Coal gangue;

D O I：

10.3785/j.issn.1008-973X.2010.05.028

中图分类号：

学科分类号：

摘要：

Samples were selected from 28 mines in 10 provinces to analyze the coal gangue characteristic in order to research the feasibility on the coal gangue generation of clay to product cement. Results show that the coal gangue has high ash, high sulfur content and low heat value. The chemical composition is the same to the clay. The coal gangue includes the rich trace element and the mineral constituent. The calcine experiments were conducted which mixed the gangue with middle calcium lime stone, sulfate residue, and so on. Results showed that the trace element and the mineral released their geological energy, which accelerated the disconnection of silicon-oxygen bond and early made the cement raw material into the clinker mineral, such as C3S, C2S, C3A, and so on. During calcination, the sulphur dioxide were given off which can react on the calcium aluminum oxide compound and form early strong sulphoaluminate of cement clinker mineral, so it can reduce the pollution of sulfide to our environment.

引用

页码：1003 / 1008

页数：5

共 8 条

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