Ash and Slag Waste Processing in Self-Shielded Atmospheric DC Arc Discharge Plasma

被引：0
|
作者：
Bolatova, Zhanar [1 ]
Pak, Alexander [1 ]
Larionov, Kirill [1 ]
Nikitin, Dmitriy [1 ]
Povalyaev, Pavel [1 ]
Ivashutenko, Aleksander [1 ]
Mamontov, Gennady [1 ]
Pestryakov, Alexey [1 ,2 ]
机构：
[1] Tomsk Polytech Univ, Sch Energy & Power Engn, Tomsk 634050, Russia
[2] Sevastopol State Univ, Res Lab Catalyt & Biomed Technol, Sevastopol 299053, Russia
来源：
MATERIALS | 2022年 / 15卷 / 22期
关键词：
slag waste; coal slag; electric arc method; silicon carbide; aluminum nitride; SILICON-CARBIDE; FLY-ASH; COAL; TECHNOLOGY; TEMPERATURE; CERAMICS;
D O I：
10.3390/ma15228134
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this paper, we report the experimental results obtained in slag waste processing by direct current arc discharge initiated in ambient air. The method does not employ vacuum and gas equipment, therefore increasing the energy efficiency of processing. Plasma processing of coal slag was performed at different arc exposure times: 5, 10, 15, 20, and 25 s. The obtained materials contained a significant amount of graphite, which was removed through combustion. The micropowder based on silicon carbide and aluminum nitride was obtained and then sintered by spark plasma. The bulk ceramic samples based on silicon carbide with the hardness of similar to 10.4 GPa were finally fabricated.
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页数：11
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