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Zeta potential of different lithotypes in Shenfu coal

  • Xinqian Shu
  • Shuquan Zhu
  • Zuna Wang
  • Jingqiu Xu
  • Lingmei Ge
Article

Abstract

The zeta potential of different lithotypes of two coals with high content of inertinite in Shenfu Coalfield has been studied. Moreover, the effects of pH value and the addition of surfactants and inorganic salts on zeta potential have also been discussed. It has been concluded that the zero potential point (ZPP) of vitrain is between about 3.30 and 3.40 of pH value, but that of fusain is between 2.00 and 2.10 of pH value. Furthermore, it has been found that vitrain could reach its ZPP once a small amount of cationic surfactants and some inorganic salts were added to pulps. However, only when a large amount of cationic surfactants and some inorganic salts were added to pulps, could fusain reach its ZPP. The conclusions are useful in the efficient separation and preparation of single petrographic constituent.

Keywords

petrographic constituents zeta potential pH value surfactants inorganic salts 

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References

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    Fuerstenau, D. W., Rasenbaum, J. M., Laskowaki, J., Effect of surface functional groups on the flotation of coal,Colloids & Surfaces, 1983, 8(1): 153.CrossRefGoogle Scholar
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    Shan Zhongjian, Liu Qingxia, Research of zeta potential on surface of coals, inSypo. of Beijing Grad. Sch., China University of Mining and Technology (ed. Zhou Shiyu), Xuzhou: Publishing House of CUMT, 1988, 292–300.Google Scholar
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    Song Yongwei, Li Dengxin, Wu Jiashan, Zeta potential of the surface of fine coal,Journal of Fuel Chemistry and Technology, 1988, 16(3): 245.Google Scholar

Copyright information

© Science in China Press 1997

Authors and Affiliations

  • Xinqian Shu
    • 1
  • Shuquan Zhu
    • 2
  • Zuna Wang
    • 2
  • Jingqiu Xu
    • 3
  • Lingmei Ge
    • 3
  1. 1.Department of Thermal EngineeringTsinghua UniversityBeijingChina
  2. 2.Beijing Graduate SchoolChina University of Mining and TechnologyBeijingChina
  3. 3.Xi'an Mining InstituteXi'anChina

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