添加剂对含钛高炉渣熔化特性的影响_冶金工程.rar

摘要:含钛高炉渣的熔化性温度是高炉炉渣冶金特性中重要因素之一，对高炉冶炼具有决定性的作用，通过深入的对含钛高炉渣熔化性温度的研究，解决钒钛磁铁矿高炉冶炼过程中的炉渣粘度大、流动性能差、出现泡沫渣、铁损失量大、炉况顺行等问题提供理论依据，对高炉冶炼具有重要意义。

　　　本论文以我国某厂高炉钒钛磁铁矿冶炼现场的炉渣为主要原料，在实验室利用旋转粘度计测出添加不同添加剂的粘度与温度曲线，从而得出其相应的熔化性温度，重点分析了不同添加剂对含钛高炉渣的熔化性温度的影响，研究发现：①在本实验条件下，该含钛高炉渣的熔化性温度一般在1250-1350℃之间，炉渣的流动性能良好，达到高炉正常冶炼钒钛磁铁矿的要求。②随着添加剂A含量的增加，含钛高炉渣的熔化性温度也随之升高。当添加剂A含量增加至10.5%时，熔化性温度急剧增加，然而当其含量超过10.5%后，增加的幅度逐渐变缓，对熔化性温度影响不大。③随着添加剂B含量的增加，含钛高炉渣的熔化性温度出现了先降低后升高的现象。添加适量的添加剂B（低于0.25%）可以有效的降低熔化性温度，但过量的增加添加剂B会使含钛高炉渣的熔化性温度迅速升高。④随着添加剂C含量的增加，含钛高炉渣的熔化性温度随之升高,且增加的幅度较大。

关键词：含钛高炉渣 添加剂 熔化性 粘度

ABSTRACT:Titania slag melting temperature metallurgical characteristics of blast-furnace slag is an important factor in the blast furnace has a decisive role, through in-depth on the titanium-containing slag melting temperature of the study and solve vanadium-titanium magnetite smelting process the slag viscosity, poor flow properties, appear foamy slag, iron loss of a large amount of issues such as furnace conditions along the line to provide a theoretical basis for the blast furnace is important.

　　　This thesis to a factory in China vanadium titanium magnetite in blast furnace smelting slag as raw material, concluded that adding different additive in the laboratory using Rotary viscometer for viscosity and temperature curve in order to arrive at the melting temperature of the corresponding, focuses on the analysis of different additives on the effect of melting temperature of TI-bearing blast furnace slag, mainly to draw the following conclusions:① Under the conditions of this experiment, the melting temperature of TI-bearing blast furnace slag at 1250-1350 between slag flow in good condition and meet the requirement of smelting vanadium-titanium magnetite in blast furnace.②With increasing additive-a content and melting temperature of TI-bearing blast furnace slag also increased. When the additive content increased from 10.5%, melting temperature increases dramatically, however, when after more than 10.5% its content, are very gradually slow, melting temperature has little effect.③With increasing additive content of b and TI-bearing blast furnace slag melting phenomenon of elevated temperatures there have been reduced. Add the right amount of additives, b (less than 0.25%) can effectively reduce the melting temperature, but excessive amounts of increased additive b is the melting temperature quickly rise of TI-bearing blast furnace slag.④With increasing additive content of c, TI-bearing blast furnace slag melting temperature increases, and are very large.

Key words:  TI-bearing blast furnace slag  Additive  Melting sexual  Viscosity