我国煤炭干法分选装备技术现状  

The current situation of coal dry cleaning equipment in China

作　　者：陈文茂 陈新波 朱建飞 谢永鑫 CHEN Wenmao;CHEN Xinbo;ZHU Jianfei;XIE Yongxin(Shaanxi Xinneng Coal Preparation Technology Co.Ltd.,Xian 710000,China)

机构地区：[1]陕西新能选煤技术有限公司,陕西西安710000

出　　处：《选煤技术》2023年第5期26-30,共5页Coal Preparation Technology

摘　　要：煤炭是我国的重要战略资源,随着不断的开发利用,优质资源逐渐减少,煤炭分选提质势在必行。湿法选煤用水量大、成本高,尤其是在干旱缺水地区难以实施,而干法选煤则可弥补湿法选煤的不足。为进一步加深业界人士对干法选煤技术的认识、推动煤炭资源清洁高效利用的进一步发展,文章从风力分选、复合式干法分选、干法重介质流化床分选、智能干法分选等当前主流干选装备的原理、研究现状、应用情况等多个方面进行了详细介绍,并对各技术的特点进行了简要归纳。分析认为:风力分选和复合式干法分选适用于易选煤、极易选煤,但分选效率偏低;干法重介质流化床分选精度较高,但入料上限低,且分选时易出现布风用多孔板堵塞问题;智能干选机入料上限高,可代替人工手选,但其入料下限较高,否则会影响分选精度;各干选技术对细粒进行分选时,对入料外在水分均有较高要求,否则进料黏度增大、细粒煤和矸石相互粘连,容易结块并堵塞设备,进而影响生产。文章提出:未来干法选煤技术应进一步提升对物料水分的适应性;同时可组合应用多种干法分选设备,实现全粒级干法分选。Coal is Chinas important strategic resource,yet along with incessant exploration and utilization of coal resources,the premium-grade coal resources are gradually decreasing.So,upgrading of coal through separation has become inexorably a necessary approach.The wet cleaning method is high in water consumption and cost,and is difficult to be applied especially in arid and water-deficient areas while the dry method can make up the deficiencies of wet method.In order to allow the persons working in coal sectors to gain a deeper insight into the dry cleaning technologies,and push for further development of highly efficient and clean utilization of coal,the paper presents a detailed introduction to the main dry cleaning equipment currently available from multiple aspects,such as the air separator,compound dry separator,heavy medium fluidized-bed dry separator and intelligent dry separator,as well as their respec-tive working principle,related research work so far made,and performance in practical application.The special features of each separator are briefly summarized as follows:the air and compound separators are suitable for treating extremely-easy and easy-to-clean coal with yet a relatively low efficiency;the heavy medium fluidized-bed version,through high in separation accuracy,can only treat a feed with a smaller top size,and its multi-hole air-distribution plate is liable to get blocked in operation;the intelligent ver-sion can treat a feed with a large upper and lower size and can be used instead of handpicking operation,

关 键 词：干法分选 复合式干法分选机 干法重介质流化床 智能干法分选 全粒级干法分选 

分 类 号：TD942[矿业工程—选矿]