Preparation of Briquettes on the Basis of Sub-Standard Coal of Kazakhstan Fields

IF 1 Q4 CHEMISTRY, MULTIDISCIPLINARY
M. Tulepov, Larissa R. Sassykova, A. Kerimkulova, G. Tureshova, F. Abdrakova, A. Zhapekova, Z. Sultanova, G. Spanova, D. Tolep, S. Gabdrashova, D. Baiseitov
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引用次数: 1

Abstract

A technology of briquetting of sub-standard coal of Kazakhstan fields to obtain high-quality briquetting fuel has been developed. A modifying additive in the form of oil residues has been selected, that make it possible to obtain a binder composition for brown coal briquetting. The material for the preparation of coal briquettes is coal fines from dry, poorly sintered coals, which cannot be used for direct combustion in the furnace. The optimal parameters for obtaining high-quality fuel briquettes have been determined. The introduction of a modifying additive into the oil residues makes it possible to obtain a binder composition for briquetting brown coal. Studies of the physical parameters of briquettes and the data of SEM showed that the thickness of the adsorption layer of coal and the cohesion of the binder in thin layers play an important role in the formation of the structure and strength of the briquette. It was assumed that at the optimum thickness of the film layer, the maximum manifestation of capillary forces and an increase in the adhesive interaction between the particles and the binder take place. The organic component of the coal fines is a mixture of various X-ray amorphous components, the presence and number of which vary in a series of metamorphism. The results of the performed studies show the possibility and prospects of using local raw materials for the development of high-quality briquetted brown coal fuel.
以哈萨克斯坦油田次标煤为原料制备型煤
开发了哈萨克斯坦油田不合标准煤的压块技术,以获得高质量的压块燃料。选择了一种油渣形式的改性添加剂,从而可以获得用于褐煤压块的粘结剂组合物。用于制备煤块的材料是干燥的、烧结不良的煤粉,这些煤粉不能在炉子中直接燃烧。确定了获得高质量燃料型煤的最佳工艺参数。将改性添加剂引入油渣中,可以获得用于压块褐煤的粘结剂组合物。对成型煤的物理参数和SEM数据的研究表明,煤吸附层的厚度和薄层粘结剂的黏结对成型煤的结构和强度的形成起着重要的作用。假设在膜层的最佳厚度时,毛细力的表现最大,颗粒与粘结剂之间的粘结作用增加。煤粉的有机成分是多种x射线无定形成分的混合物,其存在和数量在一系列变质作用中变化。研究结果表明,利用本地原料开发优质褐煤成型燃料的可能性和前景。
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来源期刊
Chemistry & Chemical Technology
Chemistry & Chemical Technology CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
1.70
自引率
44.40%
发文量
60
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