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• W4385495321 endingPage "9742" @default.
• W4385495321 startingPage "9731" @default.
• W4385495321 abstract "ABSTRACTThe coal-to-liquid gasification ash and slag (GAS) is a solid waste with high yield, difficult degradation and environmental hazards. In this study, a novel extinguishing grouting material was made in the light of GAS, and carboxymethyl cellulose (CMC) was introduced as a dispersant for GAS slurry for easy blockage and bursting of pipes during the transportation of grouting material. Zeta-potential measurement, X-ray fluorescence and water separation experiment were utilized to discuss the mechanism and suspension stability of GAS slurry with different water-cement ratios and amount of CMC addition. The fire extinguishing material and the optimal mixing ratios were also obtained. The content of SiO2, Fe2O3, CaO and Al2O3 in GAS accounted for more than 80% of the total composition, and the main substances were gypsum, quartz and calcite. CMC had a prominent improvement effect on the suspension stability of slurry, and the more the added dosage, the stronger the suspension stability. The slurry suspension stability was maintained by steric hindrance and electrostatic repulsion; when the water-cement ratios were 1: 0.8, 1: 1.0 and 1:1.4, the optimal addition amounts of CMC were 1.5%, 1.25% and 0.75%, respectively.KEYWORDS: Coal gasification ash and slagsuspension agentsuspension stabilitytransport propertycoal spontaneous combustion AcknowledgementsThis work was supported by the National Natural Science Foundation of China (Grant numbers [51974236]), Natural Science Basic Research Program of Shaanxi Province (Grant numbers [2021JC-48]), and Central Government for Local Science and Development of Shaanxi Province (Grant numbers [bcby-2020-02]). The authors also acknowledge the Key Laboratory of Coal Fire and Hazard Prevention in Shaanxi Province, China.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe work was supported by the National Natural Science Foundation of China [51974236]; Natural Science Basic Research Program of Shaanxi Province [2021JC-48]; Central Government for Local Science and Development of Shaanxi Province [bcby-2020-02].Notes on contributorsXiaowei ZhaiXiaowei Zhai Ideas and experimental protocols, Supervision, Review, Funding acquisition.Yujie ZhouYujie Zhou Writing- review & editing, Experiments, Analysis, Revises.Duo ZhangDuo Zhang Methodology, Review.Bobo SongBobo Song Experiments, Review.Le HaoLe Hao Analysis, Review." @default.
• W4385495321 created "2023-08-03" @default.
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• W4385495321 date "2023-08-01" @default.
• W4385495321 modified "2023-09-27" @default.
• W4385495321 title "Stability properties of slurry based on coal-to-liquid gasification ash slag" @default.
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• W4385495321 doi "https://doi.org/10.1080/15567036.2023.2238657" @default.
• W4385495321 hasPublicationYear "2023" @default.
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