CAJ | 학술논문

针对四台选煤厂末精煤水分偏高问题,分析了末精煤产品组成和水分,发现粗煤泥和细煤泥水分较高是造成末精煤水分偏高的主要原因。通过将传统弧形筛改造为智能振动筛网式弧形筛,定期翻转弧形筛筛网,在筛面增设挡皮；将FC1200离心机筛篮孔径由0.375 mm增至0.500 mm,调整煤泥旋流器组运行参数；加大压滤机维护力度,根据压滤机入料浓度及时调整压滤机工艺参数；引进HVPF-120 m2立式压滤机；“以灰换水”增加筛分煤系统等措施,使末精煤水分由15.72％降至14.00％以内,减少产品运输系统中胶带机打滑现象,减轻员工劳动强度,外运精煤冻车皮现象得以杜绝,确保了选煤厂正常外运,仅运费一项就节约成本540万元。
침대사태선매엄말정매수분편고문제,분석료말정매산품조성화수분,발현조매니화세매니수분교고시조성말정매수분편고적주요원인。통과장전통호형사개조위지능진동사망식호형사,정기번전호형사사망,재사면증설당피；장FC1200리심궤사람공경유0.375 mm증지0.500 mm,조정매니선류기조운행삼수；가대압려궤유호력도,근거압려궤입료농도급시조정압려궤공예삼수；인진HVPF-120 m2입식압려궤；“이회환수”증가사분매계통등조시,사말정매수분유15.72％강지14.00％이내,감소산품운수계통중효대궤타활현상,감경원공노동강도,외운정매동차피현상득이두절,학보료선매엄정상외운,부운비일항취절약성본540만원。
To reduce the moisture of fine clean coal of Sitai coal preparation plant,analyse the product composition and moisture,find that high moisture of coarse slime and filter cake are the main reasons.To resolve this problem,take the following measures.First,replace the traditional sieve bend with the intelligent vibratory one,flip the screen surface regularly,add belt to screen surface in order to slow the speed of slurry.Second,increase the sieve seam of FC1200 centrifuge from 0.375 mm to 0.500 mm and adjust the operation parameters of hydrocyclone group. Third, improve maintenance of filter and adjust process parameters promptly according to the feed concentration. Fourth,introduce a vertical filter HVPF-120 m2,and increase ash to lower moisture by adding coal screening system.By these measures, the moisture of fine clean coal decrease from 15.72% to under 14. 00%,which reduce the belt slipping in product transportation system and decrease the labor intensity.Beyond that,the clean coal no longer freeze the railway cars.The measures ensure the normal outward transport of Sitai coal preparation plant and saves transport costs 5.4 ×106 yuan.