Utilization of heat-treated coal-mining overburdens in cement production industry

Authors

  • Володимир Юрійович Сокольцов National Technical University of Ukraine "Kyiv Polytechnic Institute", 37, Prospect Peremohy, 03056, Kyiv-56, Ukraine https://orcid.org/0000-0003-1811-4527
  • Володимир Володимирович Токарчук National Technical University of Ukraine "Kyiv Polytechnic Institute", 37, Prospect Peremohy, 03056, Kyiv-56, Ukraine https://orcid.org/0000-0001-8858-6533
  • Валентин Анатолійович Свідерський National Technical University of Ukraine "Kyiv Polytechnic Institute", 37, Prospect Peremohy, 03056, Kyiv-56, Ukraine https://orcid.org/0000-0002-4457-6875

DOI:

https://doi.org/10.15587/2312-8372.2015.56243

Keywords:

cement, coal-mining overburdens, heat treatment, mineral supplement

Abstract

The known disposal methods for coal-mining overburdens are considered in the article. It is established that most research is directed to the use of burnt heaps.

It is offered to fire fresh coal-mining overburdens in order to obtain a material with a high degree of amorphisation of output minerals.

By the method of infrared spectroscopy it is revealed that in the temperature range 573-870 ºC quartz is transited in trydymite accompanied by structure disintegration. But obtained spectra show that the structure is still preserved as a result of firing to temperature 900 ºC and although partially crystalline silica structure is amorphized, but not destroyed. In the same period, aluminosilicate is weakened and it is partially destructed Si–O–Al bond, that evidenced by the partial destruction of the crystal structure of aluminosilicate. These processes significantly increase the activity of heat treated supplements.

The effect of heat-treated overburdens on the physical and mechanical properties of the cement is investigated. The optimum temperature range of heat treatment of overburdens and studied the dependence of cement properties on temperature of firing overburdens. The possibility of using heat-treated coal-mining overburdens as mineral additives in the cement production is proved.

Author Biographies

Володимир Юрійович Сокольцов, National Technical University of Ukraine "Kyiv Polytechnic Institute", 37, Prospect Peremohy, 03056, Kyiv-56

Engineer

Department of chemical technology of composite materials

Володимир Володимирович Токарчук, National Technical University of Ukraine "Kyiv Polytechnic Institute", 37, Prospect Peremohy, 03056, Kyiv-56

Candidate of Technical Sciences, Associate Professor

Department of chemical technology of composite materials

 

Валентин Анатолійович Свідерський, National Technical University of Ukraine "Kyiv Polytechnic Institute", 37, Prospect Peremohy, 03056, Kyiv-56

Doctor of Technical Sciences, Professor

Department of chemical technology of composite materials

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Published

2015-12-20

How to Cite

Сокольцов, В. Ю., Токарчук, В. В., & Свідерський, В. А. (2015). Utilization of heat-treated coal-mining overburdens in cement production industry. Technology Audit and Production Reserves, 6(4(26), 55–58. https://doi.org/10.15587/2312-8372.2015.56243

Issue

Vol. 6 No. 4(26) (2015): Technologies of food, light and chemical industry

Section

Technologies of food, light and chemical industry

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Copyright (c) 2016 Володимир Юрійович Сокольцов, Володимир Володимирович Токарчук, Валентин Анатолійович Свідерський

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