process improvements in iron and steel industry by analysis of heat and mass transfer

摘要

The purpose of this paper is, firstly, a critical review of the recent literature about heat and fluid flow and mixing phenomena for some main processes in the iron and steel industry with the aim of their im- provement and, thus, cost reduction. The criteria for bubbling and jetting during gas injection are exam- ined, including interaction of the powder load on flow regimes. It is important to know the domains of bubbling and jetting behavior in order to minimized the effect of back attack, which is responsible for ad- ditional war of bottom lines and tuyere pipes.