METHOD OF PRODUCING ACTIVE COAL Russian patent published in 2012 - IPC C01B31/08 

FIELD: process engineering.

SUBSTANCE: invention relates to production of active coals. Proposed method comprises crushing initial coal raw stock, mixing it with binding agent, i.e. coal-tar resin, and inorganic admixture, i.e. potassium hydroxide solution, granulation of produced pulp, carbonising granules and their activation. Note here that 20-40% of total amount of potassium hydroxide are pre-added to binding agent while 80-60% are introduced in coal-resin pulp in mixing. Total amount of added potassium hydroxide makes preferably 1.2 to 2.5 wt %.

EFFECT: high dichloroethane absorption, reduced time interval of activation to preset porosity.

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