The invention discloses an
oxygen-enriched side-blown reduction
molten pool smelting furnace and a method for
smelting tin by using a
tin-enriched complex material in the
smelting furnace. The smelting furnace comprises a furnace body, a furnace cylinder, a
molten pool, a furnace liner and a
water jacket; a slope-shaped furnace bottom is arranged in the furnace cylinder; and the
chromium magnesium brick furnace liner is arranged on the furnace liner in the middle of the furnace body. The method comprises the procedures of mixing, granulating,
oxygen-enriched reduction smelting,
slag fuming treatment and recycling of
tin-containing
smoke. By adopting an
oxygen-enriched side-blowing technology in the oxygen-enriched side-blown tin reduction
molten pool smelting furnace, the melt in the furnace is kept in a high-temperature
molten state; by intensively bubbling and stirring the melt, liquid,
solid and gas phases are quickly reacted; and when the tin
metal is coagulated and grown into liquid drops of 0.5 to 5 millimeters, the tin
metal quickly sinks and is demixed with the
slag, so that the capacity of the furnace
bed is improved to 100T / m<2>.d. When 10,000 tons of crude tin is produced, only one oxygen-enriched side-blown smelting furnace of 800kVA.2m<2> is needed; and by using lignite as a fuel, the smelting furnace is energy-saving and environment-friendly, and the work efficiency of the smelting furnace is improved by 5 to 10 times compared with the prior art. The
recovery rate of tin is more than 95 percent, the
smoke rate of the oxygen-enriched tin reduction furnace is controlled to be 10 to 15 percent, and the tin content of the
slag of the oxygen-enriched tin fuming furnace is less than 0.1 percent.