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This thesis is focused on the status and the actual needs of the current dust dust suppression , research prepared by a solid dust dust suppressants , to solve the bulk materials yard dust flying , will also be some special play to improve the working environment of the production of occasions role. Dust suppressants in formulations to the calcium chloride and sodium silicate as the main raw material, after the experimentally determined on the basis of the two , by adding polyvinyl alcohol, ethylene diamine , and a surfactant of sodium dodecylbenzene sulfonate , as a solid dust suppression dust formulations excipients . The best ingredients obtained by orthogonal test program is the mass ratio of calcium chloride and sodium silicate is 1:1 ; polyvinyl alcohol is added in an amount of 1.0g ; the ethylenediamine added in an amount of 15 ml ; surfactant dodecane benzene sulfonate amount of 1.0g. Determine the best formulation of the dust suppressants based on , the process of the verification experiment , the measured performance of the dust suppressants . The performance parameters measured include viscosity , surface tension , anti- evaporation rate of moisture absorption rate , security water-based , anti- rain performance , wind resistance , and strength . The measurement results show that the viscosity value of the dust suppressants 0.164Pa · s; surface tension to 54.2mN / m ; in the temperature range below 35 ℃ has better anti - evaporation properties , i.e. , when used in this temperature range , suppression dusting agent evaporation of water for a period of time will remain constant , the sand has good water retention properties ; dust suppressants natural curing , moisture absorption and moisture content of 18.97% and 6.93% , respectively , indicating that dust suppressants in the course of compression has good moisture absorption and water retention , so as to achieve better dust suppression effect ; intensity values ??of the dust suppressants can reach 5.02MPa higher compression performance , the use of the process to meet the basic requirement ; this dust suppressants under cold and hot climate conditions still showed good performance , about 5 can resist wind erosion . In addition , in a study based on the inhibition dust dust suppressants , made ??a preliminary study on the inhibition of pulverized coal dust suppressants , laboratory spray test and small field spraying test the effects of the dust suppressants performance . Dust suppressants paper developed performance measurement limited to the laboratory stage, pilot experiments in the future has a certain reference value .
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