METHOD OF LEACHING WASTES OF ENRICHED AMORPHOUS MAGNESITE WITH SOLUTION OF NITRIC ACID Russian patent published in 2018 - IPC C01F5/08 C01F5/38 C22B3/06 C22B26/22 

FIELD: chemistry.

SUBSTANCE: method of leaching the wastes of enriched amorphous magnesite with a solution of nitric acid is described, in which serpentinite-magnesite screening of fraction of 2 mm was ground in a vibratory mill for 0.5 h, the resulting powder in an amount of 10 kg was loaded through a metering hopper into the leaching reactor, where after addition of 40% of the solution of nitric acid in the ratio of 1/3 g/ml, mixing with ultrasound and heating to 90°C are carried out, the leaching reaction of serpentinite was carried out for 2 hours.

EFFECT: increasing the leaching efficiency.

1 dwg,1 ex