Which of the following is a characteristic of metallurgical coke?
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A.
Contains volatile matter
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B.
Very fragile
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C.
Strong and porous
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D.
Highly dense
Correct Answer:
C. Strong and porous
Explanation:
Metallurgical coke, often referred to as met coke, is a high-carbon product created through the destructive distillation of specific bituminous coal blends. During the carbonization process, which occurs in high-temperature ovens reaching approximately 1100 degrees Celsius in the absence of oxygen, nearly all volatile matter is driven off. This transformation results in a solid residue that is characterized by its significant mechanical strength and porous, open morphology. These physical properties are vital for its role in blast furnaces, where it must support the weight of the iron ore and limestone while remaining permeable enough to allow gases to circulate and facilitate the chemical reduction of iron ore into molten iron. Therefore, being strong and porous is a primary characteristic that distinguishes high-quality metallurgical coke.
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