The present application relates to non-
ferrous smelting technical field, specifically to a kind of
tellurium slag comprehensive
recovery method, steps include:
tellurium slag is broken, ball milling to 100 mesh below particle size, by
sulfuric acid leaching, leaching solution recovers
copper, leaching residue is oxidized by
hydrochloric acid and leaching, leaching solution is purified and recovered
selenium tellurium by
impurity removal, leaching residue is recovered gold and silver by
water washing and
neutralization and
oxygen gas inclined-blowing
rotary converter.The tellurium
slag comprehensive
recovery method disclosed in the present application,
copper and tellurium in tellurium slag are leached into
liquid phase in two stages, lead, gold and silver are in slag phase, so that
copper and tellurium are effectively separated from lead, gold and silver, and the
leaching rate of copper and tellurium is more than 90%, gold and silver are enriched in slag phase, which can be matched with pressurized copper removal
anode mud into
oxygen gas inclined-blowing
rotary converter.The tellurium slag comprehensive
recovery method disclosed in the present application can effectively recover copper, tellurium, gold, silver and other
metal elements in tellurium slag, has the advantages of high treatment efficiency, and is worth popularization and application.