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Citation: ZOU Li-Zhuang, ZHU Shu-Quan, WANG Xiao-Ling, CUI Guang-Wen. Studies on Interactions Between CWS Dispersants and Coals Ⅷ Effect of Sodium Lignosulphonate on the Slurryability of Coal and CWS Rheological Behavior[J]. Chinese Journal of Applied Chemistry, ;2005, 22(5): 479-483. shu

Studies on Interactions Between CWS Dispersants and Coals Ⅷ Effect of Sodium Lignosulphonate on the Slurryability of Coal and CWS Rheological Behavior

1.
School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083

Corresponding author: ZOU Li-Zhuang,
Received Date: 17 June 2004
Available Online: 8 October 2004
Fund Project: 国家自然科学基金资助课题(50074033) (50074033)

The effects of sodium lignosulphonate (MJ(0)) and its three fractions (MJ(1),MJ(2),MJ(3)) on the slurryabilities of Yangquan,Hebi,Huainan,Tangshan and Beisu coals as well as the rheological behavior of the coal water slurries (CWS) were studied.In comparison with MJ(0),MJ(1) can increase the CWS concentrations of above mentioned five coals by 0.8%~2.0% at a viscosity of 1 000 mPa·s,in particular by 2.0% and 1.3% for Beisu and Huainan coals,respectively.The saturated adsorption amounts of (MJ(1)) on Hebi and Huainan coals in the first step were increased,and the Zeta potential of the corresponding coal particles was increased as well.The dispersion ability of (MJ(3)) to coal particles,its adsorption amount on coal surface,and the Zeta potential of the corresponding system are lower than that for MJ(0).The lower the molecular weight and stronger the hydrophicility of the fraction,the poorer the dispersion ability.
- coal water slurry,
- rheological behavior,
- slurryability,
- sodium lignosulphonate,
- adsorption characteristic
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