The invention discloses an environment-friendly superfine
powder dust suppressant for railway
coal transportation and storage and a preparation method. The environment-friendly superfine
powder dust suppressant for railway
coal transportation and storage comprises the following components in percentage by weight: 40-65% of physical
modified starch, 25-45% of chemical
modified starch, 2-5% of
cross linker, 3-5% of anti-freezing agent, 3-4% of
wetting agent, 2-4% of dispersant, 3-4% of thickener and 2-3% of penetrating agent. The preparation method for the environment-friendly superfine
powder dust suppressant for railway
coal transportation and storage comprises: weighing the components of the dust suppressant in percentage by weight respectively and putting the components into a
ball mill; and mixing uniformly and performing high-speed shear ball milling to above 1,250 meshes, thus obtaining the environment-friendly superfine powder dust suppressant for railway coal transportation and storage. The superfine powder material is prepared by compounding the physical
modified starch and the chemical modified
starch, adding an inorganic gel material and adding multiple aids, and has the construction effects of good coal
bed wetting effect, thick pervious
bed, high curing speed, large setting strength of the pervious
bed and good dust suppression effect.