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The Effect of Industry Slag on Coal Water Slurry and Gasification

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With the development of the coal gasification industry, the output of industry slag is increasing. The industry slag, mostly as a waste, is not only composed of ash but also some coal that was not gasified. Thus, it is a critical problem to adequately utilize the slag. It can be solved if the slag is recycled to use as an additive for the coal gasification because the slag has a catalytic effect on coal gasification and the coal left in the slag could be utilized. However, the feasibility of coal water slurry with slag is unknown. This article aims to investigate the feasibility and focus on the effect of the slag as an additive on the property of the coal water slurry and the reactivity of gasification. Different loading contents of slag were analyzed to investigate the optimum and the maximum loading contents of the slag. The apparent viscosity, stability, and fluidity of coal water slurry were compared to study the mechanism of the slag on the property of coal water slurry and the activity of gasification.
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Keywords: apparent viscosity; coal water slurry; gasification; petroleum coke; slag

Document Type: Research Article

Affiliations: Key Laboratory of Coal Gasification, Ministry of Education, East China University of Science & Technology, Shanghai, China

Publication date: September 2, 2014

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