钢球配比对制粉系统球磨机运行优化的实验研究  

Influence of Steel Ball Ratio on Operation Performance of a Ball Mill Pulverizing System

作　　者：张骁博[1] 赵虹[1] 杨建国[1] 

机构地区：[1]浙江大学能源清洁利用国家重点实验室,杭州310027

出　　处：《发电设备》2010年第6期401-404,共4页Power Equipment

摘　　要：在实验室的条件下,通过调整钢球配比及煤样的磨制时间,得出不同的磨煤指标数据;从分析磨煤机理,得出最佳钢球配比。结果表明,最佳钢球组合应为30 mm、40 mm、60 mm,其最佳钢球配比为1∶3∶1～3∶4∶3;最小制粉单耗与最大磨煤机出力所对应的钢球配比相同;随磨制时间的延长,磨煤噪声增大,磨煤机输出功率逐渐减小,制粉单耗呈增大趋势。Experimental tests were conducted to a ball mill so as to study the influence of steel ball ratio on operation performance of its pulverizing system,during which the optimal steel ball ratio was determined by adjusting the ball ratio and grinding time and analyzing the coal milling mechanism.Results show that the optimal combination of ball size is 30 mm,40 mm and 60 mm,with a corresponding ball number proportion within 1∶3∶1～3∶4∶3.Both the minimum unit consumption and the maximum mill output correspond to a same ball ratio.With the rise of milling time,the grinding noise grows,milling power reduces and the unit consumption tends to increase.

关 键 词：火电厂 球磨机 钢球配比 制粉单耗 磨制时间 

分 类 号：TK223.25[动力工程及工程热物理—动力机械及工程]