Cold model studies of mixing and mass transfer in steelmaking vessels

Authors: Ajmani, S. K.; Chatterjee, A.

Source: Ironmaking & Steelmaking, Volume 32, Number 6, December 2005 , pp. 515-527(13)

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Abstract:

Room temperature model studies using water to simulate 'metal' and paraffin oil (when required) as 'slag' were conducted to study the extent of mixing and the rate of mass transfer between metal and slag in the 130 t basic oxygen furnaces (BOFs) in operation in Tata Steel. Several systems of gas injection including top blowing, combined blowing and exclusive bottom purging were investigated. Similar work was undertaken in a room temperature model of an 80 t energy optimising furnace (EOF), in operation for a brief period earlier in Tata Steel. Details of the optimum blowing conditions, including the number/distribution of bottom tuyeres for the BOFs, are elaborated in the present paper. How mixing/mass transfer in an EOF compares with the BOF case(s) is also highlighted.

Keywords: STEELMAKING; MASS TRANSFER COEFFICIENT; COLD MODEL STUDY; MIXING TIME

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/174328105X48188

Publication date: 2005-12-01

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