21. In recent centuries, reverberatory furnaces have been used. 22. The liquor is separated from the precipitate and evaporated using waste heat from the reverberatory furnace . 23. This accretion formation limits the quantity of converter slag that can be treated in a reverberatory furnace . 24. The single reverberatory furnace was used to calcine the tin concentrates and drive of arsenic and sulphur. 25. In addition, flash smelting technologies had been developed in earlier years and began to replace reverberatory furnaces . 26. One of the first areas investigated was the use of oxygen-enriched blast air in the reverberatory furnace . 27. The remains of the reverberatory furnaces are in an advanced state of decay and are mostly collapsed. 28. Replacement of reverberatory furnace smelting by flash smelting, related to the number of copper smelters using this technology. 29. When the reverberatory furnaces were completed in 1903 it appears that smelting commenced and continued through to 1908. 30. The reverberatory furnaces were replaced with a single BBOC with a charge capacity of 6 t of feed.
