脱燐におよぼす吹錬条件の影響について : 純酸素転炉の脱燐に関する基礎研究 I

概要

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Investigation was made on some blowing conditions of L-D converter that might finish dephosphorization earlier than decarborization, using an experimental baby converter. The conclusions obtained were as follows. (1) The degree of preferential dephosphorization was expressed in terms of the maximum value of ⊿P/⊿C, where ⊿P is % of dephosphorization and ⊿C is % of decarbonization. This degree was increased in parallel with a decrease of the time required for slag formation, an increase of agitation and an decrease of bath temperature. (2) The phosphorus content at the end of blowing was decreased against an increase of (⊿P/⊿C)_<max>. (3) The time required for reaching the maximum value of ⊿P/⊿C became the longer against a delay of slag fomation, a decrease of agitation and a decrease of the bath temperature. (4) The blowing time became the shorter against a decrease of the time required for the ⊿P/⊿C reaching maximum. (5) If the (⊿P/⊿C)_<max> was maintained constant, the time requird for the ⊿P/⊿C reaching maximum was reduced with an increase of agitation and a decrease of nozzle diameter because of high temperature blowing.
社団法人日本鉄鋼協会の論文
1962-01-01