Method for extraction of beryllium from the minerals of genthelvite group when processing the raw Method for extraction of beryllium from minerals of bertrandite and phenakite groups when processing the raw minerals (ores, concentrates)

Abstract

The invention relates to the non-ferrous metallurgy industry and can be used for extracting beryllium from bertrandite and phenakite groups under conditions of processing of mineral raw materials (ore, concentrate) by heap, vat leaching.

What is claimed is: 
     
         1 . A method for leaching beryllium (bertrandite and phenakite groups) from a beryllium-containing concentrate or an ore, comprising:
 contacting the concentrate or the ore with a leaching solution, containing technical hydrochloric acid and extracting beryllium via heating for 8 hours at 80° C., wherein   the technical hydrochloric acid is used in amounts from 0.2-12% (by volume) per liter of leaching solution.   
     
     
         2 . A method for dissolving a bertrandite-phenakite concentrate (or an ore), comprising:
 processing the concentrate with a solvent followed by   filtrating and washing, and   successive heating for 10 hours from 25° C. to 80° C. (by fractional method),   wherein the solvent comprises 12% by mass of hydrochloric acid in a presence of ammonium fluoride (8% solution by mass).   
     
     
         3 . A method for dissolving bertrandite and phenakite from a bertrandite-phenakite concentrate, comprising:
 processing with a solvent followed by   filtrating and washing,   wherein the solvent comprises 12% by mass hydrochloric solution (HCl:H 2 O=1:1), containing 4-8% potassium bifluoride (by mass).