Process and apparatus for recovering heavy metal from carbonaceous material

摘要: Heavy metal compounds, particularly vanadium pentoxide, are recovered from petroleum coke by combusting the under conditions constraining temperatures to within range 680° C. 1400° C., collecting ash which is then subjected a known process for extraction of metallic compounds. Whilst combustion may be achieved in fluidised bed furnace, higher recovery rates likely utilising tubular furnace chamber inclined at 10° horizontal. dried coke, ground fine powder (ASTM 75 micron, or less) entrained into primary air flow injected tangentially through ports together with secondary sufficient maintain an oxidising atmosphere. Molten slag deposted on wall centrifugal action and drained fall rotating steel drum immersed water trough. A scraper removes drug as flakes removed trough using screw conveyor.