Prospects for production of smokeless fuel briquettes from coal from open pit mines in Kazakhstan

The article discusses the common methods of manufacture of fuel briquettes, reviews the major coal fields in Kazakhstan and reports the outcome of experimental studies into production of smokeless fuel briquettes by thermal oxidative charring of coal with subsequent compression of the char. It is shown that coal from most Kazakhstan surface mines is a highgrade and available feedstock for production of smokeless fuel briquettes without binders. The benefits of the proposed approach consist in preliminary thermal treatment of coal, which is an autothermal and energy-saving process as against conventional thermal treatment techniques. Coals from Kuu-Chek, Borly, Sary Adyr, Ekibastuz, Shubarkol and Maikube feature low caking ability and volatile component, which enables their low-temperature coking in discontinuous operation vessels. Thermal treatment removes the most of toxic compounds, which makes such fuel ecologically harmful as compared with consumption coal burning in domestic furnace plants. The experimental briquettes have calorific capacity not less than 5100 kcal/kg and ash content of 21–30%. Due to lower volatile matter yield, no smoke is observed in burning of such briquettes, which allows ranking this product as ecologically safe smokeless fuel of high useful quality.

Kim S. V., Bogoyavlenskaya O. A., Kudarinov S. Kh., Orlov A. S., Orlova V. V. Prospects for production of smokeless fuel briquettes from coal from open pit mines in Kazakhstan. MIAB. Mining Inf. Anal. Bull. 2020;(9):147-158. [In Russ]. DOI: 10.25018/02361493-2020-9-0-147-158.

The studies on the theme: Smokeless Fuel Production Technology and Pilot Coal Caking Installation Design was supported in the framework of Target Program O. 0787 (2018–2020). Unique Registration Number: BR05236708.

S.V. Kim¹, Cand. Sci. (Eng.), Head of Laboratory, e-mail: sergey_kim@inbox.ru,
O.A. Bogoyavlenskaya¹, Senior Researcher, e-mail: o-bogoyavlenskay@mail.ru,
S.Kh. Kudarinov¹, Senior Researcher, e-mail: kudarinovs@mail.ru,
A.S. Orlov¹, Master of Technical Sciences, Junior Researcher, e-mail: wolftailer@mail.ru,
V.V. Orlova¹, Master of Technical Sciences, Junior Researcher, e-mail: vera_v09@mail.ru,
¹ Zh. Abishev Chemical Metallurgical Institute, Karaganda, 100009, Kazakhstan.

O.A. Bogoyavlenskaya, e-mail: o-bogoyavlenskay@mail.ru.

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