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Paper Information

Journal:   INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN)   FALL 2006 , Volume 17 , Number 3; Page(s) 123 To 131.
 
Paper: 

INVESTIGATION ON BURNER COMBUSTION IN REVERBERATORY FURNACE IN SARCHESHMEH COPPER COMPLEX AND ITS EFFECTS ON THE MATTE GRADE AND MAGNETITE FORMATION

 
 
Author(s):  GHORBANIAN J., SOLTANIEH M., RAZAVIZADEH H., BAZOUNEH A.A.S.
 
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Abstract: 

Matte smelting is the most important way for extraction of copper of sulfide ores. Reverberatory furnace is the oldest furnace in copper smelting. These types of furnaces with some modification and changes are still in service in Iran and some other places in the world. Using of oxyfuel burners causes to increase the matte production efficiency.
useing of oxygen in the oxyfuel burners causes to increase of oxygen potential in the furnace atmosphere. Increasing oxygen potential in the furnace enhances formation of magnetite (Fe3O4) in furnace, which is an undesirable compound.
Therefore with controlling of combustion condition, burner type, oxygen potential, temperature and the rate of addition of the converter slag, performance of furnace can be modified. two first items are more important than the others.
In this project, calculation were done according to the complete combustion and the equilibrium conditions (with the use of the FACT software). The volume, composition and partial pressures of gases were calculated and compared in two conditions namely: with use of oxyfuel and heavy fuel burners. Moreover the data for input and output of two types of furnaces (oxyfuel & heavy fuel burners) of Sarcheshmeh copper complex were compared with each other for 90 days. Finally the chemical composition of output gases of the furnace was analyzed. Investigation also showed that the available excess air in this furnace is around 2-3 times needed air. This huge amount of excess air causes to be similar the condition of combustion in two type of Sarcheshmeh reverberatory furnaces, also to decrease in partial pressure of SOz and increase oxygen partial pressure in outlet gases.

 
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References: 
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