高效快开式压滤机在屯兰选煤厂的应用  

Application of efficient quick-open type pressure filter in Tunlan coal preparation plant

作　　者：刘志勇 

机构地区：[1]西山煤电有限责任公司屯兰选煤厂,山西古交030206

出　　处：《洁净煤技术》2013年第4期21-24,40,共5页Clean Coal Technology

摘　　要：分析了XMZ-750型压滤机的结构和工作原理,说明其存在过滤时间长、脱水效率低、故障率高、维修成本高等问题。鉴于KMZG450/2000-U型高效快开式压滤机具有设计先进、自动化程度高、操作方便、处理量大等优点,屯兰选煤厂选用4台KMZG450/2000-U型高效快开式压滤机及辅助设备对原系统设备进行改造。改造后因压滤机拉梁裂缝导致的安全隐患彻底消除,减少6台(套)设备,缩减岗位人员4名;压料效率提高4倍以上,滤饼含水率降至18%以下,设备自动化水平提高,循环水质量浓度由13 g/L降至9 g/L以下;改善了重介系统分选效果,精煤产率提高0.5%,介耗降低8%;每年增加利润2535万元。最后从操作及维护保养、加强岗位间联系和优化管路设计三方面对高效快开式压滤机提出改进建议。通过在滤液槽内加装液位传感器,连通入料桶底部、实行依次开机,减少吹风管路长度和弯头,在末端加气水分离器,加装双轨抽拉式活动护罩等措施可进一步完善高效快开式压滤机的性能。Analyse the structure and working principle of XMZ-750 pressure filter. There were lots of problems such as long filtration time, low dehydration efficiency, high failure rate and maintenance cost. The KMZG450/2000-U type efficient quick-open pressure filter has the advantages of advanced design, high degree of automation, convenient operation, so Tunlan coal preparation plant replaces the XMZ- 750 pressure filter with four sets of KMZG450/2000-U ones and auxiliary equipment. After transformation, eliminate the potential safety hazard caused by primary filter girder crack, reduce six sets of equipments and four workers. The pressing efficiency is improved by more than four times, the moisture content of filter cake is reduced to less than 18 percent, the level of automation is improved, the coal slime recovery system is optimized, the mass fraction of circulating water is decreased from 13 g/L to less than 9 g/L. Improve the separation efficiency of heavy medium system, the clean coal yield is increased by 0.5 percent,medium consumption is reduced by 8 percent, the profits increase by 2. 535 ×107 yuan every year. Provide the improvement methods for KMZG450/2000-U type efficient quick-open pressure filter from the aspects of operation and maintenance, the connection between posts and pipe design optimization. Perfect the properties of new type pressure filter by installing liquid level sentor in filtrate receiver and aerated water separator at end, connecting the barrel bottom,reducing the length and elbows of air blowing pipe,installing dual pull type movable cover.

关 键 词：高效快开式压滤机 煤泥回收 介耗 循环水 滤饼 

分 类 号：TD462[矿业工程—矿山机电]