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| New Type of Large Magnesium Reduction Furnace XR-II based on Regenerative Combustion Technology |
| Received:October 05, 2011 Revised:October 05, 2011 |
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| DOI： |
| KeyWord:silicothermic process, magnesium, reduction furnace, regenerative combustion technology |
| Author | Institution |
| 任 玲，夏德宏，任春晓 |
北京科技大学 热能工程系 |
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| Abstract: |
| According to the deficiencies of XR-I in furnace body structure, combustion system and combustion control which are found in industrial practice, the reduction furnace of XR-II is developed by installing reduction jars at small inclination angle, broadening the combustion space near the burners, increasing the height of furnace chamber, adjusting burners arrangement, optimizing fuels assignment, applying pulse combustion and so on. The minimum time of pulse combustion is determined by the FLUENT simulation of the thermal processes in the furnace chamber of XR-II. In addition, it is shown that the furnace body structure and uniform temperature distribution of XR-II are better than those of XR-I. The furnace XR-II is put into production achieving better application effects. The coal consumption of one ton magnesium reduces to 2.6~2.8t in thermal reduction process, the temperature in the furnace chamber fluctuates in the range of ?10℃, and the output is more stable and more high. Based on the furnace structure of XR-II, a furnace group with 8 large magnesium reduction furnaces is built, of which the annual output of magnesium is above 10 thousands tons, deserving use for reference and generalization. |
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