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中文摘要：
对不同压力下三氧化二铝与碳、氯化铝在低价氯化物法炼铝过程中生成低价二氯化铝及低价二氯化铝分解的热力学条件进行简化计算。研究得出：在100kPa时，三氧化二铝与还原剂碳反应在1896K以上才能生成低价二氯化铝；而当系统压力在100～10Pa内时，温度在1294～1396K以上就可以生成低价二氯化铝；在压力为10^5～10Pa范围，1195～829K以下都可以进行二氯化铝的岐化分解，而且温度降低，温度越低，歧化分解越容易进行，且简化计算与实验事实更接近。
英文摘要：
A simplified thermodynamic calculation was done for the formation and decomposition of low-valence aluminum dichloride in the aluminum extraction process with alumina, carbon and aluminum chloride as starting materials under different pressures. The results showed that the formation of low-valence aluminum dichloride is just available under conditions that the temperature at which the alumina reacts with carbon reducer should be over 1896K under 100kPa and, normaly, the aluminum dichloride is available to produce at 1396-1294K under 100-10Pa. The disproportionational decomposition of aluminum dichloride is available at the temperature below 1195-829 K under 10^5-10Pa, and the lower the temperature, the easier the disproportionational decomposition, with the experimental results more approximate to that of the simplified calculation.
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