If we try to reduce iron ores by carbon monoxide - by injecting from different tuyere lances- and replace metallurgical coke with it in the blast furnaces. What is the maximum met. coke replacement with CO theoretically? Is 90% reduction of coke possible? And the rest 10% of met. coke would be used for mechanical support of the furnace?
Dear Berkman
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Replacing metallurgical coke with carbon monoxide in a blast furnace is a complex process that depends on various factors such as the iron ore properties, the injection system design, the operating conditions, and the desired quality of the final product. Therefore, there is no single maximum limit for coke replacement with carbon monoxide.
However, it is important to note that coke plays a critical role in the blast furnace process by providing both heat and reducing agents. The heat generated by the combustion of coke is necessary for melting the iron ore and the reducing agents produced by coke reactions with CO2 and Fe2O3 are necessary for converting the iron ore to metallic iron.
Replacing coke with carbon monoxide in the blast furnace injection system can potentially reduce the amount of coke required and improve the overall efficiency of the process. However, the amount of coke replacement with carbon monoxide is limited by the availability of reducing agents and the need to maintain sufficient heat in the furnace.
Several studies have shown that up to 20% of coke replacement with carbon monoxide is possible in the blast furnace injection system. However, the actual coke replacement limit may vary depending on the specific conditions of the blast furnace operation and the desired quality of the final product.
best regards
raghd
The coke itself produces CO in Blast furnace. It is possible to substitute the coke with high quality coal "anthracite" and CH4.
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