Titanium distribution between blast furnace slag and iron for blast furnace linings protection

Abstract

Titanium-bearing materials are commonly adopted for the protection of blast furnace hearth in the actual practices. In this study, the effects of smelting temperature, amount of TiO₂ addition, slag basicity and MgO content on the titanium distribution behaviours were experimentally studied using high-temperature smelting, equilibrium and quenching with EPMA techniques. The experiments results show that the increases in smelting temperature and TiO₂ content in the slag contributes to the transformation of titanium from the slag into the iron. While the increasing slag binary basicity suppresses the reduction of titanium oxides. The change of MgO content has a slight influence on the titanium distribution. The plant data from the operating blast furnace were also extracted for comparisons and the trends well agree with the present measurements.