METHOD OF COMBINED PROCESSING OF BERYLLIUM CONCENTRATES

摘要

FIELD: chemistry.SUBSTANCE: beryllium concentrate is activated by its milling until X-ray amorphous product with size of particles less than 5 mcm is obtained, and bertrandite-phenacite-fluorite concentrate is activated by addition in it of fluorine-containing compounds in quantity which ensures fluorine content 10÷25 wt %. Then, activated beryllium concentrate is processed with sulphuric acid and obtained acid pulp is added to activated bertrandite-phenacite-fluorite concentrate. After that, formed reaction mass is sulphatised for 1.5÷2 h at temperature 115÷125°C with continuous mechanical removal of reaction products from the surface of particles of activated concentrates with the following exposure at temperature 250÷300°C for not less than 1 h.EFFECT: increase of beryllium extraction in rough beryllium hydroxide due to sedimentation completeness.2 tbl, 1 ex