六偏磷酸钠对浮选中煤泥与黏土颗粒间相互作用的影响

徐东方; 朱书全; 朱志波; 崔浩然

六偏磷酸钠对浮选中煤泥与黏土颗粒间相互作用的影响

中国矿业大学(北京)化学与环境工程学院,北京100083

基金项目: 国家重点基础研究发展计划(2012CB214901);国家自然科学基金(51404274)

详细信息

作者简介:
徐东方(1988—),男,河南商丘人,博士研究生,从事低品质煤提质、浮选界面性质研究。

中图分类号: TD94
计量
- 文章访问数: 1175
- HTML全文浏览量: 122
- PDF下载量: 478
出版历程
- 收稿日期: 2016-05-18
- 刊出日期: 2016-12-27

Influences of sodium hexametaphosphate on interactions of coal and clay particles in flotation

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

摘要

摘要: 通过浮选试验、Zeta 电位测试、吸附量试验和扩展的DLVO理论计算,考察六偏磷酸钠对浮选中煤泥与黏土颗粒间相互作用的影响,研究六偏磷酸钠的作用机理。结果表明:高岭石含量较多时会对煤泥浮选产生不利影响,高岭石含量达到20%,精煤回收率降低18.70%;低用量的六偏磷酸钠会抑制高岭石上浮而对煤影响较小,高用量的六偏磷酸钠会失去选择抑制性;六偏磷酸钠用量为1000g/t时,能使煤和高岭石的Zeta电位分别从-25mV、-39mV移至-32mV、-57mV,增强了颗粒间静电排斥作用;同时,六偏磷酸钠水解形成的大分子吸附于高岭石表面,当颗粒相互靠近时产生较强的排斥力,增强了颗粒之间的空间稳定化作用能。
- 六偏磷酸钠 /
- 浮选 /
- 高岭石 /
- DLVO
Abstract: The influences of sodium hexametaphosphate on interfacial properties of fine minerals in coal flotation were investigated by many tests,including flotation,Zeta potential measurement,adsorptive capacity and theoretical calculations of extended DLVO.The flotation results showed that high content of kaolinite is unfavorable for coal flotation.An addition of 20% kaolinite decreased the coal recovery by 18.70%.At low concentration,sodium hexametaphosphate depressed the flotation of kaolinite,whereas it had little effect on coal flotation.At high concentration,sodium hexametaphosphate lost the selective inhibition ability.With 1000g/t sodium hexametaphosphate,the Zeta potentials of coal and kaolinite particles were shifted from -25mV,-39mV to -32mV and -57mV,respectively.As a result,the electrostatic repulsion between coal particles and kaolinite particle were enhanced.In addition,by adsorbing on the surface of kaolinite,sodium hexametaphosphate increased the steric hindrance repulsion and strengthened the dimensional stabilization effect when particles approached to each other.
- sodium hexametaphosphate /
- flotation /
- kaolinite /
- DLVO

HTML全文

参考文献(36)

刘炯天,张明青,曾艳.不同类型黏土对煤泥水中颗粒分散行为的影响[J].中国矿业大学学报,2010,39(1):56-63.

Liu Jiongtian,Zhang Mingqing,Zeng Yan.Effects of different type clays on the dispersion of fine particles in coal slurry[J].Journal of China University of Mining & Technology,2010,39(1):56-63.

Hussains A,Öahinde D,Özbayoglu G.Zeta potential measurements on three clays from Turkey and effects of clays on coal flotation[J].Journal of Colloid & Interface Science,1996,184(2):535-541.

Kasongo T,Zhou Zhiang,Xu Zhenghe,et al.Effecf and mechanism of seini-coke powder on construction and dehydration of excess sludge[J].Canadian Journal of Chemical Engineering,2000,78(4):674-681.

桂夏辉,程敢,刘炯天,等.异质细泥在煤泥浮选中的过程特征[J].煤炭学报,2012,37(2):301-309.

Gui Xiahui,Cheng Gan,Liu Jiongtian,et al.Process characteristics of heterogeneous fine mud in the coal flotation[J].Journal of China Coal Society,2012,37(2):301-309.

Lima N P,Peres A E C,Marques M L S,et al.Effect of slimes on iron ores flotation[J].International Journal of Mining Engineering & Mineral Processing,2012,1(2):43-46.

于跃先,马力强,张仲玲,等.煤泥浮选过程中的细泥夹带与罩盖机理[J].煤炭学报,2015,40(3):652-658.

Yu Yuexian,Ma Liqiang,Zhang Zhongling,et al.Mechanism of entrainment and slime coating on coal flotation[J].Journal of China Coal Society,2015,40(3):652-658.

Xu Zhenghe,Liu Jianjun,Choung J W,et al.Electrokinetic study of clay interactions with coal in flotation[J].International Journal of Mineral Processing,2003,68(s 1–4):183-196.

李延锋,张晓博,桂夏辉,等.难选煤泥形貌特征及搅拌强化可浮性试验研究[J].中国矿业大学学报,2012,41(6):930-935.

Li Yanfeng,Zhang Xiaobo,Gui Xiahui,et al.The morphological feature of hard-to-float fine coal and enhancing its floatability by stirring[J].Journal of China University of Mining & Technology,2012,41(6):930-935.

胡岳华,陈湘清,王毓华.磷酸盐对一水硬铝石和高岭石浮选的选择性作用[J].中国有色金属学报,2003,13(1):222-228.

Hu Yuehua,Chen Xiangqing,Wang Yuhua.Influences of phosphates on diaspore and kaolinite flotation[J].The Chinese Journal of Nonferrous Metals,2003,13(1):222-228.

冯雅丽,杨志超,李浩然,等.菱锰矿与石英浮选行为及其机理研究[J].东北大学学报:自然科学版,2014,35(6):903-907.

Feng Yali,Yang Zhichao,Li Haoran,et al.The flotation behavior and mechanism of rhodochrosite and quartz[J].Journal of Northeastern University:Natural Science,2014,35(6):903-907.

Choi I K,Wen Weiwei,Smith R W.The effect of a long chain phosphate on the adsorption of collectors on kaolinite[J].Minerals Engineering,1993,6(11):1191-1197.

张国范,冯其明,卢毅屏,等.六偏磷酸钠在铝土矿浮选中的作用[J].中南工业大学学报:自然科学版,2001,32(2):127-130.

Zhang Guofan,Feng Qiming,Lu Yiping,et al.Effect of sodium hexametaphosphate on flotation of bauxite[J].Journal of Central South University:Natural Science,2001,32(2):127-130.

王毓华,陈兴华,胡业民,等.磷酸盐对细粒铝硅酸盐矿物分散行为的影响[J].中南大学学报:自然科学版, 2007,38(2):238-244.

Wang Yuhua,Chen Xinghua,Hu Yemin,et al.Influences of phosphates on dispersion of fine alumin-silicate minerals[J].Journal of Central South University:Natural Science,2007,38(2):238-244.

冯其明,周清波,张国范,等.六偏磷酸钠对方解石的抑制机理[J].中国有色金属学报,2011,21(2):436-441.

Feng Qiming,Zhou Qingbo,Zhang Guofan,et al.Inhibition mechanism of sodium hexametaphosphate on calcite[J].The Chinese Journal of Nonferrous Metals,2011,21(2):436-441.

彭志兵.六偏磷酸钠和壬基羟肟酸与铝铁矿物的作用机理研究[J].有色金属:选矿部分,2015(5):87-91.

Peng Zhibing.Research on the action mechanism of sodium hexametaphosphate and nonylhydroxamic acid on the aluminum and iron minerals[J].Nonferrous Metals:Mineral Processing Section,2015(5):87-91.

夏启斌,邱显扬.六偏磷酸钠对蛇纹石的分散机理研究[J].矿冶工程,2002,22(2):51-54.

Xia Qibin,Qiu Xianyang.Investigation of action mechanism between sodium hexametaphosphate and serpentine[J].Mining and Metallurgical Engineering,2002,22(2):51-54.

徐龙华,董发勤,巫侯琴,等.油酸钠浮选高岭石的溶液化学机理研究[J].武汉理工大学学报,2012,34(12):119-123.

Xu Longhua,Dong Faqin,Wu Houqin,et al.Solution chemistry mechanism of flotation of sodium oleate on kaolinite[J].Journal of Wuhan University of Technology,2012,34(12):119-123.

邹文杰.炼焦中煤选择性絮凝-浮选分离研究[D].徐州:中国矿业大学,2014.

邱冠周,胡岳华,王淀佐.颗粒间相互作用与细粒浮选[M].长沙:中南工业大学出版社,1993:81-135.

徐东方,朱书全,曹国强,等.煤泥浮选过程中六偏磷酸钠对蒙脱石分散行为影响[J].煤炭学报,2016,41(S1):192-198.

Xu Dongfang,Zhu Shuquan,Cao Guoqiang,et al.Influences of sodium hexametaphosphate on dispersion of fine montmorillonite in coal flotation[J].Journal of China Coal Society,2016,41(S1):192-198.

左倩.微细粒赤铁矿分散行为及机理研究[D].武汉:武汉科技大学,2012.

陶洪,张芹,左倩,等.微细粒赤铁矿分散行为的研究[J].有色金属:选矿部分,2012(6):39-44.

Tao Hong,Zhang Qin,Zuo Qian,et al.Study on the dispersion behavior of microfine hematite[J].Nonferrous Metals:Mineral Processing Section,2012(6):39-44.

施引文献

资源附件(0)

计量

文章访问数: 1175
HTML全文浏览量: 122
PDF下载量: 478
被引次数: 0

六偏磷酸钠对浮选中煤泥与黏土颗粒间相互作用的影响

作者简介: 徐东方(1988—),男,河南商丘人,博士研究生,从事低品质煤提质、浮选界面性质研究。

计量

出版历程

Influences of sodium hexametaphosphate on interactions of coal and clay particles in flotation

计量

出版历程

目录

作者简介:
徐东方(1988—),男,河南商丘人,博士研究生,从事低品质煤提质、浮选界面性质研究。