Mechanism of Dust Generation in a Converter with Minimum Slag

A study was made on the mechanism of dust generation by investigation of dust behavior in a BOF with combined blowing. The results are summarized as follows: (1) BOF dust is generated through ''fumes'' condensing and mixing with ''burst bubble particles''. (2) The ratio of burst bubble particles in the dust is a little bit larger at the initial stage of blowing and decreases with the lapse of blowing time, whilst at the end of blowing, the ratio of fumes increases. Therefore, if there are any effective step for reducing the quantity of dust generation, they might be the formation of slag in an early time at the initial stage of blowing and the cool down of a hot spot from the middle stage of blowing.