METHOD OF PROCESSING BERYLLIUM CONCENTRATE MIXTURE Russian patent published in 2015 - IPC C22B35/00 C22B3/08 

FIELD: chemistry.

SUBSTANCE: method includes activation of mixture, sulphatisation of activated mixture with sulphuric acid, leaching of sulphatised mixture, separation of leaching pulp into solution of beryllium sulphate and cake, sedimentation of beryllium hydroxide from solution. Activation of mixture is carried out by its milling until X-ray amorphous product with size of particles smaller than 5 mcm is obtained. Activated mixture is sulphatised for 45 min at temperature 100÷110°C with constant mechanical removal of reaction products from the surface of mixture particles by grinding and further carrying out exposure for not less than 2 h at temperature 280÷300°C.

EFFECT: increase of beryllium extraction into coarse beryllium hydroxide and exclusion of application of expensive reagent in activation of concentrates.

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