Improvement and prediction on high temperature melting characteristics of coal ash

IF 1.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

High Temperature Materials and Processes Pub Date : 2023-01-01 DOI:10.1515/htmp-2022-0039

Yifan Chai, Xing Gao, Yanfeng Liang, Junjie Wang, Wen-ting Hu, Yi-ci Wang

引用次数: 0

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: TST = 0.7098TC + 257.98.

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粉煤灰高温熔融特性的改进与预测

摘要为了改善低灰熔点烟煤的高温融灰特性，采用三种无烟煤对混合煤的融灰特性进行了改进，以满足高炉喷吹的要求。利用FactSage热力学计算软件对粉煤灰的完全熔融温度进行了计算。结果表明，添加不同比例的高灰熔点无烟煤后，混煤的变形温度、软化温度、半球温度和流动温度都有所提高。添加不同比例的阳泉无烟煤后，与补连塔烟煤相比，混煤的灰熔点分别提高了98、136、149和170 K、分别。煤粉的灰熔点与灰完全熔融温度的计算值之间的关系为：TST=0.7098TC+257.98。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

High Temperature Materials and Processes 工程技术-材料科学：综合

CiteScore

2.50

自引率

0.00%

发文量

审稿时长

3.9 months

期刊介绍： High Temperature Materials and Processes offers an international publication forum for new ideas, insights and results related to high-temperature materials and processes in science and technology. The journal publishes original research papers and short communications addressing topics at the forefront of high-temperature materials research including processing of various materials at high temperatures. Occasionally, reviews of a specific topic are included. The journal also publishes special issues featuring ongoing research programs as well as symposia of high-temperature materials and processes, and other related research activities. Emphasis is placed on the multi-disciplinary nature of high-temperature materials and processes for various materials in a variety of states. Such a nature of the journal will help readers who wish to become acquainted with related subjects by obtaining information of various aspects of high-temperature materials research. The increasing spread of information on these subjects will also help to shed light on relevant topics of high-temperature materials and processes outside of readers’ own core specialties.