洁净煤技术
潔淨煤技術
길정매기술
CLEAN COAL TECHNOLOGY
2014年
4期
1-3,6
,共4页
水煤浆%粒度级配%成浆性能%粒度分布%双峰
水煤漿%粒度級配%成漿性能%粒度分佈%雙峰
수매장%립도급배%성장성능%립도분포%쌍봉
coal water mixture%grading size%slurryability%size distribution%double-peak
为提高神府煤制备水煤浆的成浆性能,分析了神府煤的原煤性质,说明神府煤的成浆指标为11.55,属于很难成浆煤种。对不同粒度级配的干基煤样进行粒度分析,通过粗、细煤粉单独制浆实验和不同粒度级配煤粉的成浆性实验,研究了不同粒度级配对水煤浆成浆性的影响。结果表明：经过级配的干基煤样具有双峰粒度分布特征,适宜制浆；粗煤粉不能单独成浆,细煤粉单独制浆的最大成浆浓度为61％；粗细煤粉质量比约为1∶2时,水煤浆具有较好的流动性和稳定性,最大成浆浓度可达63.8％,此时水煤浆黏度为1000 mPa??s,符合工业水煤浆制备标准,说明合理的粒度级配可降低水煤浆黏度,增强流动性及稳定性。
為提高神府煤製備水煤漿的成漿性能,分析瞭神府煤的原煤性質,說明神府煤的成漿指標為11.55,屬于很難成漿煤種。對不同粒度級配的榦基煤樣進行粒度分析,通過粗、細煤粉單獨製漿實驗和不同粒度級配煤粉的成漿性實驗,研究瞭不同粒度級配對水煤漿成漿性的影響。結果錶明：經過級配的榦基煤樣具有雙峰粒度分佈特徵,適宜製漿；粗煤粉不能單獨成漿,細煤粉單獨製漿的最大成漿濃度為61％；粗細煤粉質量比約為1∶2時,水煤漿具有較好的流動性和穩定性,最大成漿濃度可達63.8％,此時水煤漿黏度為1000 mPa??s,符閤工業水煤漿製備標準,說明閤理的粒度級配可降低水煤漿黏度,增彊流動性及穩定性。
위제고신부매제비수매장적성장성능,분석료신부매적원매성질,설명신부매적성장지표위11.55,속우흔난성장매충。대불동립도급배적간기매양진행립도분석,통과조、세매분단독제장실험화불동립도급배매분적성장성실험,연구료불동립도급배대수매장성장성적영향。결과표명：경과급배적간기매양구유쌍봉립도분포특정,괄의제장；조매분불능단독성장,세매분단독제장적최대성장농도위61％；조세매분질량비약위1∶2시,수매장구유교호적류동성화은정성,최대성장농도가체63.8％,차시수매장점도위1000 mPa??s,부합공업수매장제비표준,설명합리적립도급배가강저수매장점도,증강류동성급은정성。
In order to enable Shenfu coal to have a better slurryability,analyze its raw coal characteristics.Its slurrying index is 11.55 which indicates that the coal is difficult to form coal water mixture(CWM).Conduct the screen analysis of different dry coal samples.Taking coarse powder,fine powder and different grading size coal respectively as research object,investigate their slurryability.The results show that,after particle size gradation,the coal samples have double-peak particle size distribution which is benefical to the formation of CWM. The coarse powder can’t form CWM alone,the maximum CWM concentration is 61% when using fine powder.When the ratio of coarse and fine coal powder is 1 ∶ 2,the CWM has good liquidity and stability.The highest CWM concentration can reach 63.8%,the viscosity is 1000 mPa.s.Each indicator meets the standard of industrial CWM preparation.So appropriate grading size helps to form high quality CWM.
