Thermodynamic Analysis on Oxidative Roasting of High Titanium Slag
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摘要: 通过高钛渣高温氧化焙烧试验，研究焙烧前后物相结构转变与化学组成变化，并对高温氧化焙烧过程中高钛渣各组分的化学行为进行热力学讨论。结果表明：在1 000℃条件下氧化焙烧，黑钛石相与锐钛矿大部分发生晶型结构变化，转变为金红石型TiO2。探索高钛渣氧化焙烧的热力学规律，为火法处理高钛渣提供理论依据，对于改造传统处理高钛渣工艺具有重要的意义。Abstract: The changes of phase structure and chemical compositions in high titanium slag are studied by oxidative roasting experiment in this paper.Furthermore, the thermodynamic behavior of each component of high titanium slag in the high temperature roasting process is discussed.The result indicated that most of black titanium stone phase and anatase turn into rutile in the process of oxidative roasting at 1 000℃ temperature.The thermodynamic laws on oxidative roasting of high titanium slag is investigated, the theory basis of dealing with high titanium slag is provided, it is important for improving conventional treatment technology of high titanium slag.
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Key words:
- high titanium slag /
- oxidative roasting /
- crystal transition /
- thermodynamic
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