What temperature is blast furnace?
The hot blast temperature can be from 900 °C to 1300 °C (1600 °F to 2300 °F) depending on the stove design and condition. The temperatures they deal with may be 2000 °C to 2300 °C (3600 °F to 4200 °F).
Which reaction increases the temperature in the blast furnace to over 1500 C?
The reaction between oxygen and carbon is exothermic and is responsible for increasing the temperature of the blast furnace.
Why is temperature of slag lower than 1530?
Why is the temperature of the slag coming out of the blast furnace much lower than 1530°C? Because a blast furnace does not produce steel but pig iron that melts at 1150 – 1200°C max. The exhaust gas is also rather cold because the air is blown in the bottom part of a blast furnace where it meets the coke.
How pig iron is produced in blast furnace?
Blast furnaces produce pig iron from iron ore by the reducing action of carbon (supplied as coke) at a high temperature in the presence of a fluxing agent such as limestone.
What is the purest form of commercial iron?
wrought iron
Which cast iron is Cannot be welded?
By reducing the carbon and silicon content and cooling rapidly, much of the carbon is retained in the form of iron carbide without graphite flakes. However, iron carbide, or cementite, is extremely hard and brittle and these castings are used where high hardness and wear resistance is needed.
What is the biggest disadvantage of white cast iron?
The biggest disadvantage of white cast iron is not used as extensively as gray cast iron because it is harder, more brittle, and more difficult to machine . It also has less impact strength.
Is Cast Iron GREY or black?
The silicon in grey cast iron causes the carbon to change into graphite. This causes it to have a dark grey or almost black color. With less silicon, the carbon in white cast iron changes to cementite or iron carbide (Fe3C).
Which is the most widely used metal for castings?
Gray iron is one of the most frequently used casting materials in industrial manufacturing. Accounting for a large portion of casting supply markets, it is a strong, versatile substance.