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Why limestone is used in the blast furnace?
Limestone is used in the blast furnace as a flux material to help remove impurities such as silica, which would otherwise form a slag that interferes with the smelting process. When limestone is added, it combines with the impurities to form a molten slag that can be easily separated from the molten iron.
Why is limestone added to the blast furnace during the extraction of iron?
Limestone is added to the blast furnace during the extraction of iron to act as a flux. It helps to remove impurities, such as silica, from the iron ore by combining with them to form slag. The slag can then be easily separated from the molten iron.
How calcium oxide is formed in a blast furnace?
Calcium oxide is formed in a blast furnace as a byproduct of the smelting process when limestone, which contains calcium carbonate, is added to the furnace. The intense heat of the furnace decomposes the calcium carbonate into calcium oxide and carbon dioxide. The calcium oxide is then collected as a solid residue.
Why is limestone coke and iron ore added to the balst furnace?
Limestone helps remove impurities (silica, alumina) from the iron ore, forming slag. Coke serves as a reducing agent, reacting with the iron ore to produce carbon monoxide for the reduction process. Iron ore provides the iron for the production of steel in the blast furnace.
What is the function of limestone in the furnace?
Limestone is added to the furnace as a flux to help remove impurities from the iron ore during the iron-making process. It reacts with the impurities to form slag, which can be easily removed from the molten iron.
Why limestone is used in the blast furnace?
Limestone is used in the blast furnace as a flux material to help remove impurities such as silica, which would otherwise form a slag that interferes with the smelting process. When limestone is added, it combines with the impurities to form a molten slag that can be easily separated from the molten iron.
Why is limestone added to the blast furnace during the extraction of iron?
Limestone is added to the blast furnace during the extraction of iron to act as a flux. It helps to remove impurities, such as silica, from the iron ore by combining with them to form slag. The slag can then be easily separated from the molten iron.
How calcium oxide is formed in a blast furnace?
Calcium oxide is formed in a blast furnace as a byproduct of the smelting process when limestone, which contains calcium carbonate, is added to the furnace. The intense heat of the furnace decomposes the calcium carbonate into calcium oxide and carbon dioxide. The calcium oxide is then collected as a solid residue.
What is the purpose of limestone in the blast furnace?
Limestone is added to the blast furnace as a flux material. It helps to remove impurities in the iron ore by forming a molten slag that floats on top of the molten iron. This slag can then be easily separated from the iron.
How burden calculated in blast furnace?
The burden in a blast furnace refers to the materials added to the furnace for the iron-making process. The burden typically includes iron ore, coke, and limestone. The burden calculation takes into account the proper proportions of these materials to achieve efficient iron production and maintain the desired chemical and physical balance within the furnace. Various factors, such as the quality of the materials and the operating conditions, influence the burden calculation in a blast furnace.
Why is hot air blasted into a blast furnace?
Hot air is blasted into the blast furnace to burn the coke (a cheap form of carbon) added to form carbon dioxide.
Why is limestone coke and iron ore added to the balst furnace?
Limestone helps remove impurities (silica, alumina) from the iron ore, forming slag. Coke serves as a reducing agent, reacting with the iron ore to produce carbon monoxide for the reduction process. Iron ore provides the iron for the production of steel in the blast furnace.
Is iron oxide ruduced or oxidised in a blast furnace?
It is 96% iron (the rest is mostly sulphur etc.).
What is the function of limestone in the furnace?
Limestone is added to the furnace as a flux to help remove impurities from the iron ore during the iron-making process. It reacts with the impurities to form slag, which can be easily removed from the molten iron.
How tall is a blast furnace?
A blast furnace typically stands between 70 to 100 feet tall, with some reaching heights of up to 150 feet. The height of a blast furnace is crucial for its efficiency in producing iron, as it allows for the proper distribution of materials and gases throughout the furnace. The tall structure also helps create the necessary conditions for the chemical reactions that take place within the furnace to produce molten iron.
Why is coke and not coal added to the blast furnace?
Coke is added to the blast furnace instead of coal because coke is a purified form of coal that has higher carbon content and produces less impurities when burned. This helps maintain the purity of the iron being produced in the blast furnace. Additionally, coke generates higher temperatures, promoting better efficiency in the iron-making process.
What three substances that are used to extract iron from its ore?
Coke, a form of carbon, is used as a reducing agent to convert iron ore into iron metal. Limestone is added to the iron ore in a blast furnace to remove impurities and help in forming a slag. Hot air is blown into the furnace to aid combustion and facilitate the chemical reactions necessary for extracting iron from its ore.
