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Preparation and performance study of starch coal-water mixtures dispersant

Hailong Xu

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Abstract

The starch coal-water slurry dispersant was prepared by the radical polymerization using styrene sulfonate and acrylic acid as graft monomers in oxidation-reduction initiator system.The copolymer was characterized and analyzed by infrared spectrum(FT-IR),static contact angle and Zeta potential.The effect of amount of CWM and the dosage of dispersant on apparent viscosity was investigated.Besides,rheological behavior,static stability of coal water slurry and mechanism were investigated.The dispersant was applied in Shenhua coal slurry.It is founded that the performances of coal water slurry are improved.The experiment demonstrates that CWM show the best behavior and the apparent viscosity would be 848 mPa·s when amount of CWM is 66% and the dosage of dispersant is 0.4%.

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What this paper is about

The starch coal-water slurry dispersant was prepared by the radical polymerization using styrene sulfonate and acrylic acid as graft monomers in oxidation-reduction initiator system.The copolymer was characterized and analyzed by infrared spectrum(FT-IR),static contact angle and Zeta potential.The effect of amount of CWM and the dosage of dispersant on apparent viscosity was investigated.Besides,rheological behavior,static stability of coal water slurry and mechanism were investigated.The dispersant was applied in Shenhua coal slurry.It is founded that the performances of coal water slurry are improved.The experiment demonstrates that CWM show the best behavior and the apparent viscosity would be 848 mPa·s when amount of CWM is 66% and the dosage of dispersant is 0.4%.

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Available abstract

The starch coal-water slurry dispersant was prepared by the radical polymerization using styrene sulfonate and acrylic acid as graft monomers in oxidation-reduction initiator system.The copolymer was characterized and analyzed by infrared spectrum(FT-IR),static contact angle and Zeta potential.The effect of amount of CWM and the dosage of dispersant on apparent viscosity was investigated.Besides,rheological behavior,static stability of coal water slurry and mechanism were investigated.The dispersant was applied in Shenhua coal slurry.It is founded that the performances of coal water slurry are improved.The experiment demonstrates that CWM show the best behavior and the apparent viscosity would be 848 mPa·s when amount of CWM is 66% and the dosage of dispersant is 0.4%.

Key concepts: Dispersant, Coal water, Slurry, Chemical engineering, Coal, Chemistry, Apparent viscosity, Zeta potential

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