FLUIDISED BED TYPE PRELIMINARY REDUCING FURNACE FOR OXIDE RAW MATERIAL

摘要

A fluidized bed preliminary reducing furnace for raw material comprising an oxide, which is provided with at least two ports for feeding a reducing gas in the furnace. According to the present invention, the fed particulate raw material and the reducing gas are sufficiently dispersed and mixed with each other, so that the reduction rate of the raw material and the yield can be improved. The provision of two or more raw material feed ports is more favorable.