METHOD OF OBTAINING HUMIN-CONTAINING POWDERED LIGNITE BASED PRODUCT AND THE PRODUCT OBTAINED IN THIS MANNER Russian patent published in 2017 - IPC C05F11/02 

FIELD: mining.

SUBSTANCE: method involves grinding brown coal and mixing with modifying reagents. As modifying agents, air-dry sodium percarbonate, sodium carbonate, sodium hydroxide are used, mechanical treatment of the air-dry mixture is carried out in continuous-action centrifugal roller, ring, vibrational centrifugal, vibratory type mills that ensure the acceleration of milling bodies of 100-400 m/s² and the residence time in the treatment zone is 0.5-10 minutes, to obtain a powdered product, with the following ratio of the components of the mixture, wt %: sodium percarbonate 0.1-5; sodium carbonate - 1-10; sodium hydroxide - 0-5; water is 0.1-13; lignite - the rest. Application product is obtained in the way alleged.

EFFECT: creation of powdered lignite based product containing humic acid with a modified structure, development of ecologically clean, easy way to obtain this product that allows efficient use of the available raw materials, specified the powdered product allows you to recover damaged the soil and purify water from heavy metals ions.

2 cl, 5 tbl