Preparation and dust reduction performance study of composite dust suppressant for coal mine transportation
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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