METHOD OF FIXING DUST-PRODUCING SURFACES, INCLUDING DUST-PRODUCING SURFACES OF ASH DUMPS AND TAILING DUMPS Russian patent published in 2025 - IPC E21F5/06 C09K3/22 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of fixing dust-producing surfaces, including dust-producing surfaces of ash dumps and tailing dumps. Proposed method comprises application of polyvinyl alcohol solution on dust-forming surface. An aqueous solution of PVA with concentration of 5-10 wt.% is prepared by mixing PVA powder with water heated to temperature 85 °C, with constant stirring until complete dissolution. Obtained solution is applied on dust-forming surface in amount of 1.6-2.0 kg/m²; treated surface is subjected to at least three freezing cycles at temperature -5 °C and thawing at temperature +5 °C, which leads to formation of elastic and strong cryogel film binding dust particles.

EFFECT: wider range of methods of forming a strong protective film on dust-producing surfaces from domestic ecological compositions, specifically elastic organic gel from polyvinyl alcohol.

3 cl, 2 dwg, 3 tbl