Study on Trend of Sulfur in Titanium Slag Smelting Process with the Boundary Titanium Concentrate

In this paper,the trend of sulfur in the process of titanium slag smelting and the form of sulfur in raw materials and products are studied. The results show that 27. 97% and 35. 74% of sulfur from the feedstock turned into metallic iron and slag phases,respectively; and the rest turned into precipitator dust and exhaust gas.The sulfur content of titanium slag and semi steel is 0.64% and 1.2%,Further comprehensive utilization is affected.The most of sulfur present as Fe S in raw materials and products.The desulphurization of titanium slag and semi steel is very difficult and cost high,it will also change the structure of titanium slag phase and influence the effect of subsequent application.In order to obtain low sulfur titanium slag and semi steel,the desulphurization treatment of titanium concentrate should be taken by changing process of ore dressing or oxidizing roasting before smelting of titanium slag.