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Which of the following is a disadvantage of the blast furnace method for extracting iron?
- a)High energy consumption
- b)Low purity of iron obtained
- c)Generation of toxic gases
- d)All of the above
Correct answer is option 'D'. Can you explain this answer?
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Which of the following is a disadvantage of the blast furnace method f...
The blast furnace method for extracting iron has the disadvantages of high energy consumption, low purity of iron obtained, and the generation of toxic gases as by-products.
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Which of the following is a disadvantage of the blast furnace method f...
Disadvantages of the Blast Furnace Method for Extracting Iron
The blast furnace method is a widely used process to extract iron from its ores, particularly iron oxide. However, it has several notable disadvantages:
High Energy Consumption
- The blast furnace operates at extremely high temperatures (around 1500°C) to facilitate the reduction of iron ore.
- This high temperature requires significant energy input, primarily from burning coke, leading to high operational costs and environmental concerns due to fossil fuel consumption.
Low Purity of Iron Obtained
- The iron produced in a blast furnace is not pure; it typically contains about 3-4% carbon along with other impurities such as sulfur and phosphorus.
- This results in cast iron, which, while useful, is not as strong or ductile as pure iron, necessitating further refining processes to improve purity.
Generation of Toxic Gases
- The blast furnace emits several harmful gases, including carbon monoxide (CO) and sulfur dioxide (SO2), which pose serious environmental and health risks.
- These emissions contribute to air pollution and require extensive gas cleaning and treatment systems, adding to the complexity and cost of the operation.
Conclusion
Overall, the blast furnace method for extracting iron presents multiple disadvantages, including high energy consumption, low purity of the iron obtained, and the generation of toxic gases. These factors underscore the need for advancements in iron extraction technology that can mitigate these drawbacks while improving efficiency and environmental sustainability.
The blast furnace method is a widely used process to extract iron from its ores, particularly iron oxide. However, it has several notable disadvantages:
High Energy Consumption
- The blast furnace operates at extremely high temperatures (around 1500°C) to facilitate the reduction of iron ore.
- This high temperature requires significant energy input, primarily from burning coke, leading to high operational costs and environmental concerns due to fossil fuel consumption.
Low Purity of Iron Obtained
- The iron produced in a blast furnace is not pure; it typically contains about 3-4% carbon along with other impurities such as sulfur and phosphorus.
- This results in cast iron, which, while useful, is not as strong or ductile as pure iron, necessitating further refining processes to improve purity.
Generation of Toxic Gases
- The blast furnace emits several harmful gases, including carbon monoxide (CO) and sulfur dioxide (SO2), which pose serious environmental and health risks.
- These emissions contribute to air pollution and require extensive gas cleaning and treatment systems, adding to the complexity and cost of the operation.
Conclusion
Overall, the blast furnace method for extracting iron presents multiple disadvantages, including high energy consumption, low purity of the iron obtained, and the generation of toxic gases. These factors underscore the need for advancements in iron extraction technology that can mitigate these drawbacks while improving efficiency and environmental sustainability.
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Which of the following is a disadvantage of the blast furnace method for extracting iron?a)High energy consumptionb)Low purity of iron obtainedc)Generation of toxic gasesd)All of the aboveCorrect answer is option 'D'. Can you explain this answer?
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