HIGH-ASH COALS - POTENTIAL RESOURCES FOR FERROALLOY PRODUCTION
Ключевые слова:
high-ash coal, qualitative characteristics, X-ray diffraction (XRD), petrographic composition, complex ferroalloy.Аннотация
The paper provides a brief overview of data on the structure of electricity generation in the Republic
of Kazakhstan according to the proven world reserves of coal, the annual volume of coal production and its
distribution by industry in the Republic of Kazakhstan. Based on the comparative analysis of qualitative and
technological characteristics of the carbonaceous raw materials of various coal deposits of Kazakhstan, selected were
the high-ash deposits most attractive in terms of being put into production of complex ferroalloys. Represented are
the results of the proximate analysis and chemical composition of the representative samples of high-ash coals of
Borly and Saryadyr deposits of Karaganda and Teniz-Korzhunkol coal basins, respectively. Based on the results of
X-ray diffraction (XRD), established were the base minerals in the representative samples of high-ash coals.
Presented are the physicochemical properties and processing characteristics, the aggregate thickness of commercial
seams, the quantitative estimation of reserves of coal deposits, as well as the primary consumers. Presented also are
the results of studies of the mineral and petrographic composition of the high-ash coals of Borly and Saryadyr
deposits showing increased content of leaning microcomponents in pure carbon (21-24% fusinite, 22-35% semifusinite), which, in addition to the low content of fusible components (5-10% leptynite, 15-36% vitrinite) will
substantially exclude the caking of these types of carbonaceous raw materials at high temperatures.
