高剪切调浆和捕收剂乳化处理对煤泥浮选效果的影响研究
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摘要
为了考察高剪切调浆和捕收剂乳化处理对煤泥浮选效果的影响,以山西汾西矿业集团水峪煤矿有限责任公司选煤厂的浮选入料为对象,对比分析了柴油、柴油+调浆、乳化柴油及乳化柴油+调浆对煤泥浮选效果的影响规律。试验结果表明:高剪切调浆和柴油乳化处理均对提高煤泥浮选效果和节省柴油用量有积极作用,在同等灰分指标要求下,与采用柴油作为捕收剂相比,高剪切调浆和柴油乳化处理下的精煤可燃体回收率分别提高3.78和1.95个百分点,柴油用量由325 g/t分别降至225 g/t和100 g/t。两种处理方法均能促进非极性烃类油的分散,有利于降低柴油用量,同时提高煤泥浮选指标。
In order to explore the effect of high-shear pulp conditioning and emulsification of collector on fine coal flotation performance, a study is made with the flotation feed of the coal preparation plant under Shuiyu Mine Company of Shanxi Fenxi Mining Group as the test sample. It is aimed to compare and analyze the law governing the effect on flotation performance produced by using different schemes: diesel only, diesel + pulp conditioning, emulsified diesel only, and emulsified diesel + pulp conditioning. As evidenced by test result, the scheme of high-shear pulp conditioning plus the use of emulsified diesel plays a positive roll for improvement of flotation performance and reduction of diesel consumption; with the ash of flotation concentrate remaining unchanged, the yield of concentrate and recovery of combustible matter are respectively 3.78 percentages and 1.96 percentage points higher than those obtained by using diesel as collector while the diesel consumption is reduced respectively from 325 g/t to 225 g/t and 100 g/t. And it is found that either high-shear pulp conditioning or diesel emulsification can help promote dispersion of nonpolar hydrocarbon-type oil, reduce consumption of diesel and improve fine coal flotation performance.
In order to explore the effect of high-shear pulp conditioning and emulsification of collector on fine coal flotation performance, a study is made with the flotation feed of the coal preparation plant under Shuiyu Mine Company of Shanxi Fenxi Mining Group as the test sample. It is aimed to compare and analyze the law governing the effect on flotation performance produced by using different schemes: diesel only, diesel + pulp conditioning, emulsified diesel only, and emulsified diesel + pulp conditioning. As evidenced by test result, the scheme of high-shear pulp conditioning plus the use of emulsified diesel plays a positive roll for improvement of flotation performance and reduction of diesel consumption; with the ash of flotation concentrate remaining unchanged, the yield of concentrate and recovery of combustible matter are respectively 3.78 percentages and 1.96 percentage points higher than those obtained by using diesel as collector while the diesel consumption is reduced respectively from 325 g/t to 225 g/t and 100 g/t. And it is found that either high-shear pulp conditioning or diesel emulsification can help promote dispersion of nonpolar hydrocarbon-type oil, reduce consumption of diesel and improve fine coal flotation performance.
引文
[1] ENGEL M D,MIDDLEBROOK P D,JAMESON G J. Advances in the study of high intensity conditioning as a means of improving mineral flotation performance[J]. Minerals Engineering, 1997, 10(1): 55-68.
[2] 李吉辉.高强度浮选调浆过程碰撞速率及流体特性研究[D].北京:中国矿业大学(北京),2015.
[3] 李吉辉,刘珊,刘江祖,等.煤泥表面改质高效调浆技术的应用[J].煤炭加工与综合利用,2013(S1):41-44.
[4] 马力强,韦鲁滨,江兴华,等.调浆剪切强度对煤泥浮选的影响[J].煤炭学报,2013,38(1):140-144.
[5] 马力强,陈清如.煤泥调浆技术与设备的研究现状及进展[J].煤炭科学技术,2011,39(4):11-16.
[6] 马力强,韦鲁滨,李吉辉,等.煤泥高效调浆理论研究与应用[J].中国矿业大学学报,2012,41(2):315-319.
[7] 李吉辉,马力强,成功,等.煤泥浮选调浆技术与设备研究进展[J].煤炭工程,2014,46(9):109-111,115.
[8] 张峰,亓欣,吕发奎.柴油乳化与微乳化及其在煤泥浮选中的应用[J].选煤技术,2017(6):18-22.
[9] 余萍,毕梅芳,牛勇,等.乳化煤焦油浮选药剂的制备及性能研究[J].现代矿业,2009,25(11):53-55.
[10] 廖寅飞,安茂燕,夏文成.煤油乳化捕收剂在细粒煤浮选中的研究[J].洁净煤技术,2010,16(2):17-19.
[11] 周弘文,亓欣,刘丙顺,等.乳化浮选药剂处理孙村细粒煤的试验研究[J].选煤技术,2007(6):12-15.
[12] 江明东,闫锐敏,于一栋.浮选剂乳化系统在选煤厂的推广应用[J].煤质技术,2006(4):7-10.
[13] 沈正义,卓金武,匡亚莉,等.乳化浮选药剂浮选性能的研究[J].煤炭科学技术,2007(8):65-67,71.
[14] 任守政,关家仁.高级烃类油乳化剂的研究[J].选煤技术,1997(3):10-13.
[15] 陈祥君.浮选剂乳化工业性试验[J].选煤技术,1991(3):17-20.
[16] ABISMA L B,CANSELIER J P,WILHELM A M,et al. Emulsification by ultrasound: drop size distribution and stability[J]. Ultrason Sonochem, 1999, 6(1-2): 75-83.
[17] YU Y X, MA L Q, CAO M L,et al. Slime coatings in froth flotation: a review[J]. Minerals Engineering,2017, 114: 26-36.
[18] 崔广文,于文慧,张玉,等.煤泥浮选药剂研究现状及发展趋势[J].洁净煤技术,2015,21(1):15-19.
[19] 谢广元.选矿学[M].徐州:中国矿业大学出版社,2010:1.
[2] 李吉辉.高强度浮选调浆过程碰撞速率及流体特性研究[D].北京:中国矿业大学(北京),2015.
[3] 李吉辉,刘珊,刘江祖,等.煤泥表面改质高效调浆技术的应用[J].煤炭加工与综合利用,2013(S1):41-44.
[4] 马力强,韦鲁滨,江兴华,等.调浆剪切强度对煤泥浮选的影响[J].煤炭学报,2013,38(1):140-144.
[5] 马力强,陈清如.煤泥调浆技术与设备的研究现状及进展[J].煤炭科学技术,2011,39(4):11-16.
[6] 马力强,韦鲁滨,李吉辉,等.煤泥高效调浆理论研究与应用[J].中国矿业大学学报,2012,41(2):315-319.
[7] 李吉辉,马力强,成功,等.煤泥浮选调浆技术与设备研究进展[J].煤炭工程,2014,46(9):109-111,115.
[8] 张峰,亓欣,吕发奎.柴油乳化与微乳化及其在煤泥浮选中的应用[J].选煤技术,2017(6):18-22.
[9] 余萍,毕梅芳,牛勇,等.乳化煤焦油浮选药剂的制备及性能研究[J].现代矿业,2009,25(11):53-55.
[10] 廖寅飞,安茂燕,夏文成.煤油乳化捕收剂在细粒煤浮选中的研究[J].洁净煤技术,2010,16(2):17-19.
[11] 周弘文,亓欣,刘丙顺,等.乳化浮选药剂处理孙村细粒煤的试验研究[J].选煤技术,2007(6):12-15.
[12] 江明东,闫锐敏,于一栋.浮选剂乳化系统在选煤厂的推广应用[J].煤质技术,2006(4):7-10.
[13] 沈正义,卓金武,匡亚莉,等.乳化浮选药剂浮选性能的研究[J].煤炭科学技术,2007(8):65-67,71.
[14] 任守政,关家仁.高级烃类油乳化剂的研究[J].选煤技术,1997(3):10-13.
[15] 陈祥君.浮选剂乳化工业性试验[J].选煤技术,1991(3):17-20.
[16] ABISMA L B,CANSELIER J P,WILHELM A M,et al. Emulsification by ultrasound: drop size distribution and stability[J]. Ultrason Sonochem, 1999, 6(1-2): 75-83.
[17] YU Y X, MA L Q, CAO M L,et al. Slime coatings in froth flotation: a review[J]. Minerals Engineering,2017, 114: 26-36.
[18] 崔广文,于文慧,张玉,等.煤泥浮选药剂研究现状及发展趋势[J].洁净煤技术,2015,21(1):15-19.
[19] 谢广元.选矿学[M].徐州:中国矿业大学出版社,2010:1.