| 摘要 |
<p>Selenium is separated from a copper solution by reduction with SO2 at a temperature of about 110 DEG C to 170 DEG C and a pressure ranging from about 10 to 100 psi gage whereby a precipitate of Cu2Se is formed mixed with some copper powder. A slurry of Cu2Se and copper is then formed in an aqueous solution containing free sulfate ions and some copper sulfate and the slurry aerated to effect the selective dissolution of the copper powder, leaving said Cu2Se precipitate as a residue which is then separated by filtration from the dissolved copper.</p> |
