FIELD: metallurgy.
SUBSTANCE: invention relates to foundry. Method includes heating of fluidising agent, sputtering of lignosulphonate under high pressure on the surface of sand. Sputtering is implemented under high pressure in fluosolid layer of pulse action sprayer. Fluidising agent is heated up to the temperature 15…25 °C.
EFFECT: it is achieved increasing of mixture dry durability.
1 ex
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