基于絮凝强化浮选的无烟煤深度脱灰技术研究  

Study on Deep Deashing Technology of Anthracite Based on Flocculation Enhanced Flotation

作　　者：陈乐 邓小伟 吴锦文[1,2] 侯迎港 吕波 房朝军 张传祥 CHEN Le;DENG Xiaowei;WU Jinwen;HOU Yinggang;LYU Bo;FANG Chaojun;ZHANG Chuanxiang(College of Chemistry and Chemical Engineering,Henan Polytechnic University,Jiaozuo,Henan 454000,China;Erdos Institute of Coal Clean Development and Utilization,Henan Polytechnic University,Ordos,Inner Mongolia 017000,China;State Key Laboratory of Mineral Processing Science and Technology,Beijing 100160,China;Ordos Tanyuan Technology Co.,Ltd.,Ordos,Inner Mongolia 017000,China)

机构地区：[1]河南理工大学化学化工学院,河南焦作市454000 [2]河南理工大学鄂尔多斯煤炭清洁开发利用研究院,内蒙古鄂尔多斯市017000 [3]矿物加工科学与技术国家重点实验室,北京100160 [4]鄂尔多斯市炭源科技有限公司,内蒙古鄂尔多斯市017000

出　　处：《矿业研究与开发》2024年第4期237-243,共7页Mining Research and Development

基　　金：国家自然科学基金项目(51904096)。

摘　　要：煤的附加值随灰分的降低而升高,然而煤炭深度脱灰技术尚未得到工业应用。以无烟煤为研究对象,使用絮凝强化浮选法对其进行深度脱灰。根据粒径、XRD和接触角等试验结果探讨了絮凝机理,采用单一变量法探究矿浆浓度、捕收剂用量、起泡剂用量和絮凝剂用量对浮选效果的影响。结果表明:当矿浆浓度为80 g/L、捕收剂用量为2 kg/t、起泡剂用量为1 kg/t、分散剂用量为2 kg/t和聚氧化乙烯用量为5 g/t时,浮选效果最佳;与传统浮选方法相比,絮凝强化浮选法可获得较高的精煤可燃体回收率和较低的精煤灰分,原煤的灰分由10.15%降低至1.98%,提高了浮选效率。研究结果可为煤炭高附加值利用提供一定参考。The added value of coal increases with the decrease of ash content,but the deep deashing technology of coal has not been applied in industry.Taking anthracite coal as the research object,the deep deashing of anthracite was carried out by flocculation enhanced flotation method.The mechanism of flocculation was investigated based on the experimental results of particle size,XRD and contact angle.The influences of slurry concentration,collector dosage,foaming agent dosage and flocculant dosage on flotation effect were explored by single variable method.The results show that when the slurry concentration is 80 g/L,the collector dosage is 2 kg/t,the foaming agent dosage is 1 kg/t,the dispersant dosage is 2 kg/t and the polyoxene dosage is 5 g/t,the flotation effect is the best.Compared with the traditional flotation method,the flocculation-enhanced flotation method can obtain a higher recovery rate of cleaned coal combustible and a lower ash content of cleaned coal.The ash content of raw coal is reduced from 10.15%to 1.98%,and the flotation efficiency is improved.The research results can provide some reference for high value-added utilization of coal.

关 键 词：浮选 超纯煤 絮凝剂 无烟煤 

分 类 号：TD94[矿业工程—选矿]