摘要 |
<p>The invention relates to a method for treating solids-containing process gas (7) in a suspension smelting furnace (1), comprising directing the process gas from the reaction shaft (2) of the suspension smelting furnace to a lower furnace (3) and, further, through a raised shaft (4) to a waste heat boiler (6) to cool the process gas, whereby, through one or more gas nozzles (8) placed on the lower furnace top wall (12), oxidizing gas (9) is fed into the process gas (7) flowing in the lower furnace (3), whereby the amount of oxidizing gas is adjusted during the process so that the amount of sulphides contained in the solid matter of the process gas that is directed to the waste heat boiler (6) is minimized. The invention also relates to the equipment. ® KIPO & WIPO 2009</p> |