钛氧化物还原与钛渣变稠

Reduction of Titanium Oxide and Thickening of Blast Furnace Slag Bearing Higher Titania

采用攀钢高炉现场渣经过还原 ,获得具有一定钛氧化物还原度的炉渣试样 ,进一步测定样品的粘度和熔化性温度。随着钛氧化物还原度的提高 ,炉渣的粘度和熔化性温度总体呈上升趋势。用矿相显微镜研究了炉渣的显微结构并用图象分析仪对渣中TiC、TiN进行了定量研究。结果表明 ,高钛型高炉渣的变稠还与钛氧化物还原生成的TiC、TiN数量有关。因此高炉冶炼过程中用钛氧化物还原度作为判断和控制钛渣变稠的指标能更准确地反映高炉过程特点。

The slag samples that have some titanium oxide reduction grade are reduced with blast furnace slag taken from Pan Zhi Hua Iron & Steel (Group) Co. in site. Then the viscosity and free running temperature of slag samples were measured in laboratory. With the increasing of reduction grade the viscosity and free running temperature of slags would have rising tendency. The mineral structure of the samples is observed in optical microscope, and quantitative analysis of TiC, TiN in the slag samples is made with image analysiser. The results show that the thickening of titanium slag has relationship with the amount of TiC, TiN, which was reduced from titania. So the usage of titanium oxide reduction grade as the index of thickening in blast furnace process is reasonable, and which could represent characteristic of the blast furnace smelting iron ore bearing titanium and vanadium.