Effects of microwave pretreatment on the grinding characteristic of coal

The influence of microwave pretreatment on the heating response, moisture content, surface morphology, grindability, and liberation of coal were investigated. The results show that microwave irradiation has a weak effect on the chemical composition, but can reduce moisture content significantly. Int...

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Published inEnergy sources. Part A, Recovery, utilization, and environmental effects Vol. 38; no. 18; pp. 2741 - 2748
Main Authors Zhu, Xiangnan, Tao, Youjun, Sun, Qixiao
Format Journal Article
LanguageEnglish
Published Taylor & Francis 16.09.2016
Subjects
Coal
Cracks
Dehydration
Grindability
Grinding
Heating
liberation
microwave pretreatment
Microwaves
Moisture content
Pretreatment
surface morphology
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Summary:The influence of microwave pretreatment on the heating response, moisture content, surface morphology, grindability, and liberation of coal were investigated. The results show that microwave irradiation has a weak effect on the chemical composition, but can reduce moisture content significantly. Intuitionistic evidence was discovered that microwave energy can induce micron cracks on the interface among different minerals. The results of grinding tests show that microwave pretreatment can remarkably promote the fine grinding of coal. Density analysis shows that the liberation degree of grinding products increases with the microwave pretreatment time due to the auxiliary grinding and selective heating effect of microwave radiation.
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ISSN:1556-7036
1556-7230
DOI:10.1080/15567036.2015.1112861