不同破碎方式下不规则中煤破碎效果研究  

Study on Crushing Effect of Irregular Middlings with Different Crushing Methods

作　　者：杨景超[1,2] 甄坤坤 茹毅 张海军[2] 

机构地区：[1]中国矿业大学化工学院,江苏徐州221116 [2]国家煤加工与洁净化工程技术研究中心,江苏徐州221116

出　　处：《煤炭技术》2018年第1期295-297,共3页Coal Technology

基　　金：十二五国家科技支撑计划课题(2014BAB01B01);教育部新世纪优秀人才支持计划(NCET-13-1020)

摘　　要：以马兰选煤厂中煤为研究对象,分别通过挤压和冲击2种方式进行破碎试验。不同密度破碎试验结果表明:在挤压和冲击2种破碎方式下,低密度和中间密度级中煤破碎效果较好,其中1.40~1.50 g/cm^3密度级的中煤破碎效果最好。不同粒度破碎试验表明:中煤入料粒度越大,破碎效果愈好。不同破碎强度试验表明:随着破碎强度的增大,煤岩的破碎效果愈好,且相同破碎强度下冲击破碎效果优于挤压破碎。The middlings from Malan coal preparation were broken by extrusion crushing and impact crushing plant were taken as the study object, middlings ~ Different density crushing test results show that under the two crushing methods of extrusion and impact, the middlings density have a ＂better crushing effect, and the crushing effect of the coal of low density and medium sample with density between 1.40-1.50 g/cm3 is the best. The results of different size crushing tests show that coal feeding size is larger, the better the crushing effect. Different crushing strength tests show that the crushing effect of coal rock increases with the increase of crushing strength. And the effect of impact crushing is better than that of extrusion crushing under the same strength.

关 键 词：不规则中煤 挤压破碎 冲击破碎 破碎强度 

分 类 号：TD94[矿业工程—选矿]