CAJ | 학술논문

将一种典型的易结渣烟煤分为低（<1.3 g·cm-3）、中（1.3～1.6 g·cm-3）、高（>1.6 g·cm-3）3个密度煤样。利用先进计算机控制扫描电镜（CCSEM）技术对原煤及分密度煤样中的致渣矿物进行了深入研究。结果表明， Na与K在煤中无机矿主要以硅铝酸盐的形式存在；粒径大于22μm的外在（独立于炭基质）黄铁矿、磁黄铁矿主要分布在高密度煤中；未识别矿物（复杂硅铝酸盐）在高密度煤矿物中所占的比例最小，但其中Fe含量为20%～90%的颗粒所占比例最高；不同密度煤样中，内在（与炭基质结合）矿的硅铝比和碱酸比不同，低密度煤中内在矿的碱酸比最大，结渣倾向最严重，而中密度煤内在矿的碱酸比和硅铝比均小于原煤。
장일충전형적역결사연매분위저（<1.3 g·cm-3）、중（1.3～1.6 g·cm-3）、고（>1.6 g·cm-3）3개밀도매양。이용선진계산궤공제소묘전경（CCSEM）기술대원매급분밀도매양중적치사광물진행료심입연구。결과표명， Na여K재매중무궤광주요이규려산염적형식존재；립경대우22μm적외재（독립우탄기질）황철광、자황철광주요분포재고밀도매중；미식별광물（복잡규려산염）재고밀도매광물중소점적비례최소，단기중Fe함량위20%～90%적과립소점비례최고；불동밀도매양중，내재（여탄기질결합）광적규려비화감산비불동，저밀도매중내재광적감산비최대，결사경향최엄중，이중밀도매내재광적감산비화규려비균소우원매。
A typical bituminous coal that could easily lead to slagging was divided into three ingredients with different density, i.e. low-density (<1.3 g·cm-3), medium-density (1.3-1.6 g·cm-3) and high-density (>1.6 g·cm-3). Computer controlled scanning electron microscopy (CCSEM) was used to analyze and characterize the slagging minerals in the raw coal and three ingredients. The results showed that Na and K in inorganic minerals of the coal exist as aluminosilicate. Exterior (no bonding) pyrite and pyrrhotite with diameter larger than 22μm were mainly present in the high-density sample. The least proportion of unidentified materials in which there were the most particles containing 20%-90% of Fe component was involved in the high-density sample. The ratios of silicon to aluminum and basic to acidic oxides in bonding minerals were variation for different density samples. There was the highest basic to acidic oxides ratio in the low-density sample, suggesting highest slagging propensity. The ratios of silicon to aluminum and basic to acidic oxides were lower for the medium-density sample than for the raw coal.