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To remove impurities, mainly sand ( silicon dioxide). It is sometimes reflerred to as a 'flux'.
The limestone undergoes thermal decomposition.
CaCO3 = CaO + CO2
The CO2 reacts with the coke to produce carbon monoxide
CO2 + C = 2CO
The Carbon monoxide reduces the iron ore ( iron oxide) to iron
Fe2O3 + 3CO = 2Fe + 3CO2
The iron is tapped off at base of the furnace. The CO2 recircluates to form more carbon monoixide.
The Iron ore contains a number of impurities , notably sand (silicon dioxde ; SiO2)
These impurities react with calcium oxide (CaO) produces from the thermal decomposition of ;omestone, to form 'slag'.
CaO + SiO2 = CaSiO3 (calcium silicate (Slag)).
Since tons of slag is produced it is used to make 'breeze blocks' for building and road surfaces.
What else can I help you with?
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.
What substance are mixed with iron ore in the blast furnace?
Coke (a form of carbon) and limestone are mixed with iron ore in the blast furnace. Coke provides the heat source for the chemical reaction, while limestone helps to remove impurities from the iron ore.
What is the charge in the blast furnace?
The charge in the blast furnace typically consists of iron ore, coke (a form of coal), and limestone. The iron ore is the main source of iron, the coke provides the heat and reducing agent, while the limestone helps remove impurities in the form of slag.
Which three substances are put into the blast furnace?
In a blast furnace, iron ore (Fe2O3), coke (carbon), and limestone (CaCO3) are commonly used. Iron ore is the source of iron, coke acts as a fuel and reduces the iron ore to iron, and limestone helps remove impurities by forming a slag.
What goes into a blast furnace?
A blast furnace typically contains iron ore, coke (fuel derived from coal), and limestone. These materials are layered in the furnace and hot air is blown in at the bottom to create a chemical reaction that produces molten iron.
How does limestone coke and iron ore get into the blast furnace?
through the top of the blast furnace
How is limestone usefull?
because in a blast furnace the limestone removes unwanted substances as slag.
What is a common flux in a blast furnace?
Limestone, dolomite, BOF slag, electric furnace slag, olivine
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.
What substance are mixed with iron ore in the blast furnace?
Coke (a form of carbon) and limestone are mixed with iron ore in the blast furnace. Coke provides the heat source for the chemical reaction, while limestone helps to remove impurities from the iron ore.
What is the charge in the blast furnace?
The charge in the blast furnace typically consists of iron ore, coke (a form of coal), and limestone. The iron ore is the main source of iron, the coke provides the heat and reducing agent, while the limestone helps remove impurities in the form of slag.
Which three substances are put into the blast furnace?
In a blast furnace, iron ore (Fe2O3), coke (carbon), and limestone (CaCO3) are commonly used. Iron ore is the source of iron, coke acts as a fuel and reduces the iron ore to iron, and limestone helps remove impurities by forming a slag.
What goes into a blast furnace?
A blast furnace typically contains iron ore, coke (fuel derived from coal), and limestone. These materials are layered in the furnace and hot air is blown in at the bottom to create a chemical reaction that produces molten iron.
What are the 3 raw materials used in the blast furnace?
The three raw materials used in a blast furnace are iron ore, coke, and limestone. Iron ore is the primary source of iron, coke is used as a fuel and reducing agent, and limestone helps to remove impurities from the iron ore.
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.
What are the three substances fed into the blast furnace?
The three substances fed into the blast furnace are iron ore (in the form of sinter, pellets, or lumps), coke (a form of carbon derived from coal), and limestone (which helps remove impurities from the iron ore and acts as a flux).
Why is Limestone added to a Blast Furnace for producing Iron?
Limestone is added to a blast furnace to act as a flux, which helps remove impurities from the iron ore being smelted. It reacts with the impurities to form a slag that can be easily separated from the molten iron. This process helps increase the purity of the iron being produced.
