TiO2/SiO2对含钒钛高炉炉料熔滴性能的影响

Research of TiO_2/SiO_2 Influence on Furnace Burden's Dropping Performance of Vanadium-titanium Magnetite

利用高温熔滴炉模拟实际高炉软熔带的运行情况,探讨TiO_2/SiO_2对含钒钛高炉炉料的软化温度、熔化温度、最大压差等高温物理性能的影响。试验结果表明:TiO_2/SiO_2比值由0.17增大到0.45后,炉料的软化开始温度(T_(10))升高了56℃,软化终了温度(T_(40))升高了35℃,说明软熔带位置较低;炉料的熔化开始温度(T_s)升高了40℃,滴落温度(T_d)升高了30℃;炉料的最大压差(ΔP_(max))升高,炉料透气性变差;炉料熔滴的总特性值(S值)增大,熔滴性能变差。试验范围内随着TiO_2/SiO_2比值的增大炉料的熔滴性能变差,建议在承钢现有炉料结构条件下,应适当降低TiO_2/SiO_2比值。

Experiments were carried out in the lab to simulate temperature oven, the effect of different TiO2/SiO2 on charge perature range, maximum pressure discussed. The results showed that dropping zone of blast furnace in a high softening and other high temperature physical with the increase of TiO2/SiO2 from temperature of furnace charge was increased by 56 ℃, and the end 35℃, which indicated the lower position of the cohesive zone ; at th temperature range, melting tem- properties had been respectively 0. 17 to 0.45 starting softening softening temperature was increased by e same time the renewed pressure tem- perature was increased by 40 ℃, and dropping temperature was increased by 30℃ ; the maximum pres- sure （ APm= ） increased, which led to worse burden permeability; the total characteristic droplet value was increased, which resulted in low droplet performance. It can be concluded that with the increase of TiO2/ SiO2 droplet performance got worse. Therefore, TiO2/SiO2 should be appropriately reduced under the ex- istinz burden structural conditions of Cheng steel.