METHOD OF PRODUCTION OF CONCENTRATE OF HUMIC ACID FROM BROWN COAL AND LINE OF PRODUCTION OF CONCENTRATE OF HUMIC ACID Russian patent published in 2013 - IPC C05F11/02 

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture. The method of production of the concentrate of humic acid from brown coal, including its crushing to obtain microparticles, preparing the suspension in the diluted solution of alkali, and extraction, with mechanical stirring of the suspension in the reactor-mixer from the microparticles of humic acid coal. The coal is subjected to two-stage crushing, and at the second stage of crushing the microparticles with ragged surface are formed, and in stirring the suspension in the reactor-mixer it is simultaneously affected with ultrasound for 7-15 min., then the solid phase is separated from the liquid phase by precipitation of insoluble coal-ash in the sediment basin for 15-20 min., and the liquid phase is fed in the cracking reactor, the catalyst-hydrochloric acid is added, the liquid phase is resolved to water and humic acid of 90%, 70% and 40% concentration after sedimentation for at least 24 hours.

EFFECT: invention enables to create a complete cycle of industrial production of humic acids, to improve the performance and efficiency of their extraction of brown coal, to extend the scope by improving the quality of the finished product.

2 cl, 1 dwg