The price of size 10 〜400 mm charge material ferrochrome is lower than that of size 10 ~ 60 mm high carbon ferrochrome with same chemical composition

but the charge material with larger size can't be charged in AOD by high level bin to finish alloying. With analysis on 60 t AOD refining stainless steel decarburization model and commercial production practice

the method of charge material ferrochrome adding in scrap charging bucket is used and the operation model to adding material after charging hot metal is adopted with controlling bath liquid temperature 1 550 〜1 600 ℃ before charging

adding 200 kg/1 charge material ferrochromium to replace high carbon ferrochromium and applying oxygen intensity 2.0 〜2. 5 m

3

/(t · min)

the stability of operation with once adding charge material ferrochromium realizes and the cost of production decreases.