Preparation and characterization of an agglomeration-cementing agent for dust suppression in open pit coal mining
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The present study, based on copolymerization of free radicals, makes hydroxyethyl cellulose react with acrylamide and acrylic acid to prepare a type of agglomeration-cementing dust suppressant with decent fluidity, agglomeration ability and water absorption capacity. Single-factor experiments are carried out to determine the optimal reaction conditions; the progress of the reaction was analyzed using FTIR and XRD; TG-DSC and SEM are used to further characterize the product; special experiments are designed to test the product’s viscosity, wettability mechanical properties, wind resistance and water resistance. The experimental results indicate that the newly developed agglomeration-cementing dust suppressant is favored due to the easiness to apply in the field and its decent ability to withstand wind and rain.
KeywordsHydroxyethyl cellulose Acrylamide Radical reaction Agglomeration cementing Dust suppressant
This work was supported financially by the National Key Research & Development Program of China (Grant no. 2017YFC0805202), the National Natural Science Foundation of China (Grant no. 51474139, 51774198), the Outstanding Youth Fund Project of Provincial Universities in Shandong Province (Grant no. ZR2017JL026), the Qingdao City Science and Technology Project (Grant no. 16-6-2-52-nsh), the China Postdoctoral Science Foundation Funded Special Project (Grant no. 2016T90642), the China Postdoctoral Science Foundation Funded Project (Grant no. 2015M570602), the Qingdao Postdoctoral Applied Research Project (Grant no. 2015194), the Taishan Scholar Talent Team Support Plan for Advantaged and Unique Discipline Areas, and the National Natural Science Foundation of Shandong Province (Grant no. ZR2016EEM36).
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