低阶煤中含氧官能团含量对浮选吸附概率的影响规律

耿建纯; 刘文礼

低阶煤中含氧官能团含量对浮选吸附概率的影响规律

中国矿业大学(北京)化学与环境工程学院,北京100083

基金项目: 中央高校基本科研业务费专项资金(2010YH11)

详细信息

作者简介:
耿建纯(1988—),男,河北石家庄人,博士研究生,主要从事低阶煤清洁利用的研究。

中图分类号: TD94
计量
- 文章访问数: 1147
- HTML全文浏览量: 160
- PDF下载量: 736
- 被引次数: 0
出版历程
- 收稿日期: 2016-07-19
- 刊出日期: 2016-12-28

Effect of oxygen-containing functional groups on the attachment probability of low rank coals in coal flotation

School of Chemical and Environmental Engineering,China University of Mining and Technology,Beijing 100083,China

摘要

摘要: 为了提高低阶煤的疏水性和可浮性,实现低阶煤的高效浮选提质,本研究用3种不同类别的表面活性剂(CTAB、SDS和Span-80)对平朔长焰煤和胜利褐煤煤样进行改性处理,采用离子交换法测定改性前后煤样中含氧官能团的含量,测定了各煤样在气泡上的吸附概率,并对表面活性剂改性低阶煤的规律和机理进行了分析,认为含氧官能团含量是影响煤的疏水性和可浮性的重要因素,通过表面活性剂改性可以对低阶煤表面的含氧官能团产生有效的掩蔽作用,提高低阶煤的疏水性,促进其在气泡上的吸附;氢键对表面活性剂在低阶煤表面的吸附起最主要的作用,表面活性剂极性端官能团的种类及其与煤中含氧官能团之间的氢键作用强弱对表面活性剂的改性效果起决定性作用。
- 表面改性 /
- 低阶煤 /
- 含氧官能团 /
- 吸附概率
Abstract: In order to improve the hydrophobicity and flotability of low rank coals and realize the efficient flotation of low rank coals,the Pingshuo long-flame coal and Shengli brown coal were surface modified with three types of surfactants which are CTAB,SDS and Span-80.The oxygen-containing functional groups in each modified coal were detected through ion exchange method,and the attachment probability of them were measured as well.The modifying rule of surfactants on low rank coals were analyzed and the mechanism was also discussed.It was found that the content of oxygen-containing functional groups was the most important factor that affected the hydrophobicity and flotability of low rank coals.The modification of low rank coals with surfactants could mask part of the oxygen-containing functional groups and improve the hydrophobicity of low rank coals as well as its attachment probability on bubbles.Hydrogen bonding is the main factor that make surfactants attach on the coal surface.The functional groups on the polar end of the surfactants and the strength of the hydrogen bond between them and the oxygen-containing functional groups on the coal surface play a decisive role in the surface modification.
- surface modification /
- low rank coal /
- oxygen-containing functional group /
- attachment probability

HTML全文

参考文献(34)

[1]	刘炯天,吴立新,吕涛,等.煤炭提质技术与输配方案的战略研究[M].北京:科学出版社,2014.
[2]	朱学栋,朱子彬,韩崇家,等.煤中含氧官能团的红外光谱定量分析[J].燃料化学学报,1999,27(4):336-339.
[3]	Zhu Xuedong,Zhu Zibin,Han Chongjia,et al.Quantitative determination of oxygen-contain-ing functional groups in coal by FTIR specro-scopy[J].Journal of Fuel Chemistry and Technology,1999,27(4):336-39.
[4]	赵振国.吸附作用应用原理[M].北京:化学工业出版社,2005:201.
[5]	李春柱.维多利亚褐煤科学进展[M].北京:化学工业出版社,2009:16.
[6]	Sarikaya M,Özbayoğlu G.Flotation character-istics of oxidized coal[J].Fuel,1995,74(2):291-294.
[7]	Fuerstenau D W,Rosenbaum J M,Laskowski.Effect of surface functional groups on the flotation of coal[J].Colloids and Surfaces,1983,8(2):153-173.
[8]	村田逞诠.煤的润湿性研究及其应用[M].朱春笙,龚祯祥,译.北京:煤炭工业出版社,1992.
[9]	王永刚,周剑林,林雄超.低阶煤含氧官能团赋存状态及其对表面性质的影响[J].煤炭科学技术,2013,41(9):182-187.
[10]	Wang Yonggang,Zhou Jianlin,Lin Xiongchao.Deposit conditions of oxygen functional groups in low rank coal and affected to surface properties[J].Coal Science and Technology,2013,41(9):182-187.
[11]	段旭琴,王祖讷,孙春宝.神府煤显微组分表面性质研究[J].中国矿业大学学报,2007,36(5):630-635.
[12]	Duan Xuqin,Wang Zune,Sun Chunbao.Surface properties of macerals from Shenfu coal[J].Journal of China University of Mining & Technology,2007,36(5):630-635.
[13]	杨静.煤尘的润湿机理研究[D].青岛:山东科技大学,2008.
[14]	周剑林,王永刚,黄鑫,等.低阶煤中含氧官能团分布的研究[J].燃料化学学报,2013,41(2):134-138.
[15]	Zhou Jianlin,Wang Yonggang,Huang Xin,et al.Determination of O-containing functional grou-ps distribution in low-rank coals by chemical titration[J].Journal of Fuel Chemistry and Technology,2013,41(2):134-138.
[16]	Jena M S,Biswal S K,Rudramuniyappa M V.Study on flotation characteristics of oxidized Indian high ash sub-bituminous coal[J].International Journal of Mineral Processing,2008,87(1):42-50.
[17]	Ahmed H A M,Drzymala J.Effect of flotation procedure and composition of reagents on yield of a difficult-to-float coal[J].Physicochemical Problems of Mineral Processing,2004,38:52-63.
[18]	李响.低阶煤和生物质煤浆表面改性及其成浆特性研究[D].杭州:浙江大学,2012.
[19]	Cebeci Y.The investigation of the floatability improvement of Yozgat Ayridam lignite using various collectors[J].Fuel,2002,81(3):281-289.
[20]	Majka-Myrcha B,Girczys J.The effect of redox conditions on the floatability of coal[J].Coal Preparation,1993,13(1/2):21-30.
[21]	Wojcik W,Janczuk B,Bialopiotrowicz T.The relationship between the flotability of low rank coal and its adhesion to air bubbles in aqueous diacetone alcoho solutions[J].Separation Science and Technology,1990,25(6):1407-1418.
[22]	Chander S,Polat H,Mohal B.Flotation and wettability of a low rank coal in the presence of surfactants[J].Minerals and Metallurgical Processing,1994,11:55-63.
[23]	孙冬,樊民强,陈超,等.难浮煤泥浮选试验研究[J].选煤技术,2002(6):8-10.
[24]	Sun Dong,Fan Minqiang,Chen Chao,et al.Investigations on the float experiment on difficult floated slime[J].Coal preparation technology,2002(6):8-10.
[25]	Crawford R J,Mainwaring D E.The influence of surfactant adsorption on the surface characterisation of Australian coals[J].Fuel,2001,80(3):313-320.
[26]	耿建纯,刘文礼,赵吉莉.低阶煤羧基测定条件研究[J].煤炭科学技术,2014,42(9):139-141.
[27]	Geng Jianchun,Liu Wenli,Zhao Jili.Research on test conditions of carboxyl groups in low-rank coals[J].Coal Science and Technology,2014,42(9):139-141.
[28]	张世杰.煤泥浮选过程中颗粒与气泡碰撞、吸附规律研究[D].北京:中国矿业大学(北京),2015.
[29]	Fuerstenau D W,Narayanan K S,Herrera-Urbina R,et al.Assessing the effect of oxidation on the wettability and flotation response of coal[J].Coal Science and Technology,1987,11:475-478.
[30]	Harris G H,Diao J,Fuerstenau D W.Coal flotation with nonionic surfactants[J].Coal Perparation,1995,16(3/4):135-147.
[31]	Paria S,Khilar K C.A review on experimental studies of surfactant adsorption at the hydrophilic solid–water interface[J].Advances in Colloid and Interface Science,2004,110(3):75-95.
[32]	Zhang R,Somasundaran P.Advances in adsorption of surfactants and their mixtures at solid/solution interfaces[J].Advances in Colloid and Interface Science,2006,123:213-229.
[33]	崔正刚.表面活性剂、胶体与界面化学基础[M].北京:化学工业出版社,2013:171.
[34]

施引文献

资源附件(0)

访问统计

点击查看大图

计量

文章访问数: 1147
HTML全文浏览量: 160
PDF下载量: 736
被引次数: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

留言板

低阶煤中含氧官能团含量对浮选吸附概率的影响规律

作者简介:
耿建纯(1988—),男,河北石家庄人,博士研究生,主要从事低阶煤清洁利用的研究。

计量

Effect of oxygen-containing functional groups on the attachment probability of low rank coals in coal flotation

计量

目录

留言板

低阶煤中含氧官能团含量对浮选吸附概率的影响规律

作者简介: 耿建纯(1988—),男,河北石家庄人,博士研究生,主要从事低阶煤清洁利用的研究。

计量

出版历程

Effect of oxygen-containing functional groups on the attachment probability of low rank coals in coal flotation

计量

出版历程

目录

作者简介:
耿建纯(1988—),男,河北石家庄人,博士研究生,主要从事低阶煤清洁利用的研究。