Research on the Activation Technology of Coal Gasification Ash by Baking Ball Milling
In order to improve the activity of coal gasification ash,increase the ways and scope of resource utilization of coal gasification ash,and achieve high-value utilization of coal gasification ash,the method of baking ball milling screening is used to treat it.The particle size distribution and material morphology of coal gasification ash before and after activation and at different grinding times were analyzed through particle size distribution experiments and SEM experiments.It was found that the particle size directly affects the activity of coal gasification ash,and the distribution characteristics of coal gasification ash particles can affect the overall compact stacking of cementitious materials,thereby determining the micro compactness of the hardened body.The effectiveness of coal gasification ash roasting ball milling activation technology was verified through compressive and flexural strength tests of coal gasification ash and hydrated lime before and after activation.The results showed that the flexural and compressive strength of the activated coal gasification ash mixture was 1.4～3.0 times higher than that of the non activated coal gasification ash hydrated lime mixture,proving the feasibility of coal gasification ash activation technology.
coal gasification ashhigh value utilizationactivation technologygeopolymer
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