中国煤炭
中國煤炭
중국매탄
CHINA COAL
2015年
3期
95-100
,共6页
粒度组成%过滤脱水%均匀度%沉积规律
粒度組成%過濾脫水%均勻度%沉積規律
립도조성%과려탈수%균균도%침적규률
size composition%filter dehydration%particle uniformity%deposition regulation
基于细粒煤泥的粒度分布特性进行真空过滤脱水，以煤浆的脱水速度、滤饼水分和过滤比阻为判定指标，对均匀度煤浆的脱水性质和不同粒度组成进行分析.试验结果表明，均匀度相差不大，煤浆的脱水效果随着粒度的减小而急剧恶化；粒度组成相似，随着均匀度的减小，煤浆的脱水效果会逐渐变好.这是由于－0.045 mm 微细颗粒容易堵塞滤纸，从而降低滤饼的透气性，影响煤炭脱水效果.
基于細粒煤泥的粒度分佈特性進行真空過濾脫水，以煤漿的脫水速度、濾餅水分和過濾比阻為判定指標，對均勻度煤漿的脫水性質和不同粒度組成進行分析.試驗結果錶明，均勻度相差不大，煤漿的脫水效果隨著粒度的減小而急劇噁化；粒度組成相似，隨著均勻度的減小，煤漿的脫水效果會逐漸變好.這是由于－0.045 mm 微細顆粒容易堵塞濾紙，從而降低濾餅的透氣性，影響煤炭脫水效果.
기우세립매니적립도분포특성진행진공과려탈수，이매장적탈수속도、려병수분화과려비조위판정지표，대균균도매장적탈수성질화불동립도조성진행분석.시험결과표명，균균도상차불대，매장적탈수효과수착립도적감소이급극악화；립도조성상사，수착균균도적감소，매장적탈수효과회축점변호.저시유우－0.045 mm 미세과립용역도새려지，종이강저려병적투기성，영향매탄탈수효과.
An experimental study of the filter dehydration of fine coal focusing on particle characteristics has been conducted. The filtration velocity,moisture content and filter resistance as an index. The dehydrate characters of coal slurry with uniformity and different particle size have been analyzed. The test results showed that the uniformity were similar. The dehydration effect has been declined when the particle size decreasing. When the size composition were same, the dehydration effect of coal slurry has been improved when the uniformity decreasing,which because the drill gap effect of -0.045 mm fine particles tend to plug the filter paper and reduce the permeability of filter cake. Therefore,this is the key part of effecting coal dehydration.
