Improvement and prediction on high temperature melting characteristics of coal ash
Author:
Chai Yifan1, Gao Xing1, Liang Yanfeng1, Wang Junjie1, Hu Wenxian1, Wang Yici1
Affiliation:
1. School of Materials and Metallurgy, Inner Mongolia University of Science and Technology , Baotou 014010 , China
Abstract
Abstract
In order to improve the high temperature melting characteristics of bituminous coal with low ash melting point, three kinds of anthracites were used to improve the ash melting characteristics of blended coal to meet the requirement of blast furnace injection. The complete melting temperature of pulverized coal ash had been calculated by using FactSage thermodynamic calculation software. The results showed that after adding different proportions of anthracite with high ash melting point, the deformation temperature, softening temperature, hemispherical temperature, and flow temperature of the blended coal increased. After adding different proportions of Yang Quan anthracite, compared to Bu Lian Ta bituminous coal, the ash melting point of blended coal increased by 98, 136, 149, and 170 K, respectively. The relationship between the ash melting point of pulverized coal and the calculated value of ash complete melting temperature was obtained as: T
ST = 0.7098T
C + 257.98.
Publisher
Walter de Gruyter GmbH
Subject
Physical and Theoretical Chemistry,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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