WAY TO NEUTRALISE THE ACIDIC MINE WATERS Russian patent published in 2017 - IPC C02F1/66 C02F101/10 C02F103/10 

FIELD: chemistry.

SUBSTANCE: for the implementation of the method as a neutralising calciferous material using slag produced during the production of ferrovanadium by silico-aluminothermic method and containing up to 97 wt % of particles with the size less than 2 mm. Slag contains calcium oxide in quantity of 53.0-60.0 wt % and magnesium oxide in the quantity of 8.0-9.0 wt %. Neutralisation is carried out by the flow method, using slag in the form of a filter dam, built at the rate of 14-16 kg lag for neutralisation 1m³ acid mine water with an initial pH=4.

EFFECT: simplification and reduction in the cost of neutralising acidic mine water, and reducing the time of processing.

2 cl, 1 tbl, 1 ex