METHOD OF PRODUCTION OF BERYLLIUM HYDROXIDE Russian patent published in 2005 - IPC

FIELD: chemical industry; production of beryllium compounds.

SUBSTANCE: the invention is pertaining to the field of chemical industry, to production of beryllium compounds, in particular, to production of beryllium hydroxide used for production of refractory ceramics and constructional materials. The method of production of beryllium hydroxide provides for interaction of beryllium-containing concentrates and a sodium hydroxide with the subsequent separation of the products of the reaction. The concentrate or a mixture of concentrates is treated in the autoclave with a sodium hydroxide with concentration of 400-450 g/dm³ at presence of a calcium oxide at the molar ratio of CaO : SiO₂ = 1.1-1.3 , the temperature of 250-260°C and the ratio_{ofNa2O : BeO = 12-13 within 4-5 hours. The technical result is simplification of the method, an increased selectivity of extraction of beryllium into a solution and making it possible of a metallic beryllium waste reprocessing.}

EFFECT: the invention ensures simplification of the method, an increased selectivity of extraction of beryllium into a solution, and advantage of a metallic beryllium waste reprocessing.

1 ex, 4 tbl