Research on Preparation of Vanadium Trioxide by Means of Fluidization
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摘要: 对采用流态化技术,还原多钒酸铵(APV)制取三氧化二钒工艺及相关参数进行了研究,得到了合格的三氧化二钒产品。试验表明:APV在还原温度700750℃、保温时间1015 min的条件下可以得到TV≥63%的三氧化二钒产品,比回转窑方法所需时间短、温度低;更容易实现对温度和时间的控制,得到较高品位的三氧化二钒产品(TV>67%);流态化生产的三氧化二钒产品C含量低,更有利于钒铁冶炼对C含量的控制;同时,流态化生产三氧化二钒效率高、还原剂消耗少、设备固定、相对安全性更高。Abstract: Vanadium trioxide is prepared from reducing APV by means of fluidization.The experimental results showed that TV content of vanadium trioxide product is over 63% when reaction temperature is 700~750 ℃,reaction time is 10~15 min.By comparison with rotary kiln process,the reaction time of this method is shorter and reaction temperature is lower,TV content of the product is higher(>67%) and C content of product is lower,so it is useful to control C content of ferrovanadium.At the same time,the production efficiency of this method is higher,the consume of reductant is lower,the equipment is more secure.
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Key words:
- vanadium trioxide /
- fluidized bed /
- APV
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