溶銑鍋でのソーダ灰による溶銑処理方式の最適化(脱りん・脱硫 : ソーダ系スラグ)(<特集>溶銑処理の発展)

概要

論文の詳細を見る
Process performances of various dephosphorization methods are compared in terms of their chemical reactions and other operational items. Among the various ladle hot metal treatments, (1) quick Na_2CO_3 top charge method, (2) Na_2CO_3 injection method, and (3) snorkel (specially designed lid) method are examined, and the following results are obtained : (i) Injection method is unfavorable for the stable operation, since it enlarges the slopping and hot metal temperature drop. (ii) In the Na_2CO_3 top charge method, treatment time can be shortened to the level of 15 to 20 min. (quick method) (iii) By the quick method, same dephosphorization is secured as the slow one, the desulfurization being greatly improved, and the unit refractory consumptions being reduced to the half. (iv) Snorkel is found to be beneficial, since it can increase the hot metal carrying capacities of the ladle and reduce the ladle lining wear and temperature drop of hot metal, keeping the dephosphorization and desulfurization same as the non-snorkel method.
社団法人日本鉄鋼協会の論文
1983-11-01