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Chemical Composition and Electrophysical Characteristics of the Ash of Bogatyr Coal
Solid Fuel Chemistry ( IF 0.7 ) Pub Date : 2020-04-10 , DOI: 10.3103/s0361521920020020
B. T. Ermagambet , B. K. Kasenov , N. U. Nurgaliyev , M. K. Kazankapova , Zh. M. Kasenova , E. E. Kuanyshbekov

Abstract

The chemical composition and the temperature dependences of the electrical characteristics (electric capacity, electrical resistance, and dielectric constant) of the ash of Bogatyr coal in its original form and after electromagnetic and electric discharge treatments in a range of 293–483 K were studied, and the procedures of these coal ash treatments were specified. Temperature ranges in which the materials exhibited semiconductor properties and metallic conductivity were determined. The band gaps (ΔE) were calculated for the test samples. The results of measurements showed that the ash after electric discharge treatment has the highest values of electric capacity and permittivity and the lowest electrical resistance, as compared with those of the initial ash and ash after electromagnetic treatment. Coal ash after electric discharge treatment seems a promising prepared raw material for its further thermochemical processing with the extraction of valuable components such as rare metals, silica, and alumina.


中文翻译:

Bogatyr煤灰的化学组成和电物理特性

摘要

研究了Bogatyr煤灰的原始形态以及经过293-483 K范围的电磁和放电处理后,其电特性(电容,电阻和介电常数)的灰分的化学成分和温度依赖性,并指定了这些煤灰处理的程序。确定材料表现出半导体性能和金属导电性的温度范围。带隙(ΔE为测试样品计算)。测量结果表明,与初始灰和电磁处理后的灰相比,放电处理后的灰具有最高的电容和介电常数值和最低的电阻值。放电处理后的粉煤灰似乎是一种有前途的原料,可用于其进一步的热化学处理,并提取有价值的组分,例如稀有金属,二氧化硅和氧化铝。
更新日期:2020-04-10
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