Final reduction annealing of iron powder in a vibrating bed
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A. flow-type apparatus has been developed for the investigation or processes of heat treatment of powered materials in moving vibrating beds.
A study was made of the final reduction of residual oxides in an iron powder and milled sponge iron and hydrogen. It was established that: a) at a temperature above 700° C a high-quality product (total Fe≃99.0%) can be obtained, with apparatus throughputs of 45 and 30 g/min, respectively, by annealing PZh5M iron powder for 4–5 min and milled sponge iron 8–10 min, b) the final reduction of residual oxides is controlled by diffusion mass tranport.
KeywordsOxide Hydrogen Iron Heat Treatment Sponge
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