摘要
为正确认识磨制煤粉和原生煤粉物性的差异,选取山西灵石煤进行制粉实验,从质量状况和密度组成两方面进行了实验研究,寻找两者之间物性的差异.研究表明:磨制煤粉的灰分比原生煤粉明显提高,而且粗粒度煤粉灰分较高;二者的全硫与粒度之间缺乏规律性,但磨制煤粉的硫酸盐硫与粒度呈负相关性,硫化铁硫与粒度呈正相关性;各密度级的产率和硫分与原生煤粉的变化趋势基本一致,同时灰分在各密度级的分布不均匀,而原生煤粉的灰分随着密度的增大而迅速增大,且集中在高密度区域中.
In order to understand the difference between protogenous trial sample and the grinding trial sample,from Shanxi Lingshi coal preparation plant the author gets the pilot sample,and then gets the protogenous trial sample and the grinding trial sample through preparing,looking for the difference of physical properties between them in quality and density.Insult shows that through grinding of the coal,the ash significantly increase and the ash of coarser coal is higher.Although there are no universal rules of the total sulfur and the granularity of grinding coal,the sulfate sulfur has a negative correlation with the granularity,the pyrites sulfur has a positive correlation with the granularity.The yield and total sulfur in every particle size fraction keep the trend with the protogenous coal,but the ash of different particle size is no homogeneous of the grinding coal.
出处
《煤炭转化》
CAS
CSCD
北大核心
2010年第4期14-17,共4页
Coal Conversion
基金
河南省重点科技攻关项目(072302190002)
河南省高校科技创新人才基金资助项目(2009HASTIT020)
中国矿业大学教育部重点实验室开放基金资助项目(CPEUKF08-03)
关键词
煤粉
磨矿
物性
硫分
密度
pulverized coal
grinding
physical properties
sulfur
density
