洁净煤技术
潔淨煤技術
길정매기술
Clean Coal Technology
2015年
5期
38-41
,共4页
弛张筛%分级粒度%筛分效率%混煤
弛張篩%分級粒度%篩分效率%混煤
이장사%분급립도%사분효솔%혼매
flip-flop screen%classification size%screening efficiency%mixed coal
针对张家岇选煤厂入选原煤灰分升高,产品质量下降等问题,分析了原煤分级粒度由25 mm调整为13 mm后对最终产品的影响. 基于粒度调整后,原有香蕉筛存在筛分效率低、筛孔堵塞及清理麻烦等问题,提出采用2台弛张筛代替原有香蕉筛进行13 mm干法筛分. 结果表明,采用13 mm分级后,中块煤产率由14. 16%提高至24. 29%,末混煤产率由原来的59. 17%降至48. 24%,每年可增收2079万元. 采用弛张筛替换原有香蕉筛后,浅槽入料量与分级筛筛上错配物减少了13. 90%,混入分选系统的煤泥量由8. 69%降至2. 17%,末混煤产率提高了3. 44%,保证了原有浅槽的处理量,减少了对原有煤泥水处理系统的影响.
針對張傢岇選煤廠入選原煤灰分升高,產品質量下降等問題,分析瞭原煤分級粒度由25 mm調整為13 mm後對最終產品的影響. 基于粒度調整後,原有香蕉篩存在篩分效率低、篩孔堵塞及清理痳煩等問題,提齣採用2檯弛張篩代替原有香蕉篩進行13 mm榦法篩分. 結果錶明,採用13 mm分級後,中塊煤產率由14. 16%提高至24. 29%,末混煤產率由原來的59. 17%降至48. 24%,每年可增收2079萬元. 採用弛張篩替換原有香蕉篩後,淺槽入料量與分級篩篩上錯配物減少瞭13. 90%,混入分選繫統的煤泥量由8. 69%降至2. 17%,末混煤產率提高瞭3. 44%,保證瞭原有淺槽的處理量,減少瞭對原有煤泥水處理繫統的影響.
침대장가앙선매엄입선원매회분승고,산품질량하강등문제,분석료원매분급립도유25 mm조정위13 mm후대최종산품적영향. 기우립도조정후,원유향초사존재사분효솔저、사공도새급청리마번등문제,제출채용2태이장사대체원유향초사진행13 mm간법사분. 결과표명,채용13 mm분급후,중괴매산솔유14. 16%제고지24. 29%,말혼매산솔유원래적59. 17%강지48. 24%,매년가증수2079만원. 채용이장사체환원유향초사후,천조입료량여분급사사상착배물감소료13. 90%,혼입분선계통적매니량유8. 69%강지2. 17%,말혼매산솔제고료3. 44%,보증료원유천조적처리량,감소료대원유매니수처리계통적영향.
Affected by high ash of raw coal in Zhangjiamao coal preparation plant,the products quality decreased obviously. In order to re-solve the problem,the raw coal classification size was changed from 25 mm to 13 mm. The change lowed the screening efficiency,it al-so made the screen aperture jammed easily. The original banana screens were replaced by two flip flow screens. The yield of medium-sized coal increased from 14. 16% to 24. 29%,the yield of mixed slack coal decreased from 59. 17% to 48. 24%. The revenue of plant in-creased by RMB 2. 079×107 per year. When used the flip flow screens,the feed quantity and mismatch content reduced by 13. 90%,and the slime content reduced from 8. 69% to 2. 17%, the yield of mixed slack coal increased by 3. 44%.
