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《Journal of Inner Mongolia University of Science and Technology》 2007-01
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Study on the effect of CaO on high ash-melting coals under condition of infirmly deoxidized ambience

YU Ge-wen1,2,WANG Yan-ming3,XU Yuan-yuan2(1.Biological and Chemical Engineering School,Inner Mongolia University of Science and Technology,Baotou 014010,China;2.Institute of Coal Chemistry,CAS,Taiyuan 030000,China;3.Inner Mongolia University,Hohhot 010021,China)  
Selecting CaO as additive,blending it into two coals in different proportions respectively,the tests of coal ash fusion characteristics are performed under condition of the infirmly deoxidized ambience.It is shown that the additive can reduce coal ash melting temperatures effectively.One reason is that the accession of additives changes the proportion of acidic oxides to alkalescent oxides in coal ash chemical composition,and the other is that the mineral substances react to CaO and turn them into low-melting eutectic matters.
【CateGory Index】: TQ533
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