In order to reduce the degree of dust pollution during the coal transportation,a new type of composite dust suppressant JCS-1 suitable for the coal mine transportation was prepared using alkyl glucoside,3-chloro-2-hydroxypropyltrimethylammonium chloride and auxiliary agent A as the main raw materials.The preparation conditions of the composite dust suppressant JCS-1 were optimized with dust removal efficiency as the evaluation index,and the surface activity,wetting performance and dust reduction performance of JCS-1 with different mass fractions were investigated.The experimental results showed that JCS-1 prepared under the conditions of reaction temperature of 85℃,reaction time of 5 hours,and mass fraction of auxiliary agent A of 5%had the highest dust removal efficiency.As the mass fraction of JCS-1 continued to increase,the surface tension of the solution and its contact angle on the surface of coal flakes showed a gradually decreasing trend,while the dust removal efficiency showed a trend of increasing first and then decreasing.When the mass fraction of JCS-1 was 0.05%,the dust removal efficiency could reach its maximum(96.6%).With good dust reduction effect,it could meet the dust reduction operation needs in coal mine transportation.
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