text: The ASARCO Amarillo copper refinery switched in 1991 from reverberatory furnace treatment of anode slimes to a BBOC to reduce the gold inventory. The original reverberatory furnace had a 15 t capacity. The production cycle of the reverberatory furnace was typically 7–10 days, with the final doré production being about 8 t per cycle.
  A single 3 t capacity BBOC was installed, and it was found to increase rejection of selenium from the slimes, with a reduction in fluxing requirements of about 80%.