METHOD FOR NEUTRALIZING ACIDIC MINE WATER Russian patent published in 2024 - IPC C02F1/66 

FIELD: environmental protection.

SUBSTANCE: invention can be used for neutralizing acidic mine waters in coal basins. In the method of neutralizing acidic mine waters, lime-containing self-disintegrating slag of Chusovsky Metallurgical Plant OJSC is used as a neutralizing calcium-containing material, consisting of 95.0% of a fraction with a size of no more than 2 mm and no more than 5.0% of pieces with a particle size of up to 300 mm, having a humidity of no more than 10.0% and containing in chemical composition (wt.%, no more than): SiO₂ - 30.0, Al₂O₃ - 10.0, MgO - 8.5, CaO - 60.0, V₂O₅ - 1.0. Slag is introduced into the acid mine water outflow channel with an initial pH value of 2.9 in an amount of 0.125-0.2 wt.% of the volume of acidic water being treated.

EFFECT: method for neutralizing acidic mine waters is simplified, its efficiency is increased by expanding the range of processed acidic mine waters, the process is made cheaper, and its duration is reduced.

1 cl, 1 tbl, 1 ex