Development of scientific and technological bases for application of brown coal semi coke in the technology of non- milled silicon carbide

[摘要] Thermodynamics is investigated, and the optimum temperature and time modes of carbonization of a briquetted silica fume batch- brown coal semi coke are defined. The complete carbonization of the batch in the conditions of heat treatment is achieved at a temperature of 1923 - 1973 K within 15 - 20 minutes. The conditions and indicators of the chemical enrichment of carbonization products are established. After enrichment, the carbide content is more than 90%. Silicon carbide micro-powder is obtained with a specific surface area 8000 - 9000 m2/kg.

[发布机构] Institute of Metallurgy and Material Science, Siberian State Industrial University, 42 Kirova Street, Novokuznetsk; 654007, Russia^1;JSC Mittal Steel, 34 Zavodskaya Street, Temirtau; 101400, Kazakhstan^2;National Mineral Resources University, 2 21st line V.O, Saint-Petersburg; 199106, Russia^3

[效力级别] 金属学 [学科分类] 材料科学（综合）

[关键词] Micropowders;Optimum temperature;Semi-coke