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Why is a blast furnace called blast furnace?
how does the blast furnace maintain the heat ?what is the function of CaCO3 ?how the slag protect the molten iron ?why does iron flow down to the bottom /how does the slag and molten iron get seperated ?what is use of waste gas /what is main impurity of iron in blast furnace ?
What goes into a blast furnace?
Sinter, which is a mixture of iron ore, coke and limestone, and a blast of hot air. Externally to the furnace, iron ore, coke and limestone are mixed together Intimate mixing ensures that the reactants are as close as possible to each other. This is loaded into the top of the blast furnace. A blast of hot air ( ~ 1100 oC) is sent in at the bottom of the furnace, through tuyeres. The oxygen (air) is also one of the reactants. The products are tapped from the bottom of the furb=nace are liquid iron and 'slag' ( calcium silicate).
What is sentence using the word furnace?
a furnace is hot thats all i know
Uses of pure iron?
Today, pig iron is typically poured directly out of the bottom of the blast furnace through a trough into a ladle car for transfer to the steel mill in mostly liquid form, referred to as hot metal. The hot metal is then charged into a steelmaking vessel to produce steel, typically with an electric arc furnace or basic oxygen furnace, by burning off the excess carbon in a controlled fashion and adjusting the alloy composition.
Which term refers to the process of removing ores from the ground?
The ore obtained after mining contains iron in the form of iron oxide. pure iron is obtained, therefore, by the reduction of this ore. This process is carried out in the blast furnace. Temperature is different at different heights in the furnace. mixture of iron ore, lime stoneand coke is introduced the furnace from the top and a blast of burning gases is blown with pressure from an inlet near the bottom. Temperature of these gases is 1500°C.Falling mixture and up going blast of hot gases first meet near the base. Aerial oxygen present in the blast of gases combines with coke and forms carbon dioxide with huge amount of heat energy. As this reaction is exothermic, so the temperature in this zone of furnace reaches up to 1900°C. When this carbon dioxide rises up it reacts with more carbon and forms carbon monoxide this reaction is endothermic, so temperature in this region falls up to 1100°C. CO is very good reducing agent.It reduces iron oxide to free iron which is obtained in molten form due to high temperature. Calcium oxide (CaO) obtained by the decomposition of calcium carbonate combines with the impurities of ore i.e. silicate and aluminate. Most of calcium silicate and calcium aluminate is called slag. It is lighter than iron floats over iron.Slag is obtained from the upper out let and is used in building material. Iron obtained from blast furnace is called pig iron. It contains 96 percent iron, 4 percent carbon and traces of sulphur, silicon, phosphorus and manganese.
What Is A Blast Furnace?
A blast furnace is a forge in which ore is smelted to meal, being intensified by a blast of hot air.
What creates the air blast in a blast furnace?
Hot air under pressure
How do you think the blast furnace got its name?
the blast furnace got its name , because its bottom which is called a furnace blows hot air to go up.
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 a blast furnace called blast furnace?
how does the blast furnace maintain the heat ?what is the function of CaCO3 ?how the slag protect the molten iron ?why does iron flow down to the bottom /how does the slag and molten iron get seperated ?what is use of waste gas /what is main impurity of iron in blast furnace ?
What goes into a blast furnace?
Sinter, which is a mixture of iron ore, coke and limestone, and a blast of hot air. Externally to the furnace, iron ore, coke and limestone are mixed together Intimate mixing ensures that the reactants are as close as possible to each other. This is loaded into the top of the blast furnace. A blast of hot air ( ~ 1100 oC) is sent in at the bottom of the furnace, through tuyeres. The oxygen (air) is also one of the reactants. The products are tapped from the bottom of the furb=nace are liquid iron and 'slag' ( calcium silicate).
How tall is a blast furnace?
The air (hot blast and possibly added oxygen) ranges from 1800 to 2200F (depending on equipment and operating conditions. The flame temperature (RAFT) is between 3400 and 4200F. The liquid pig iron is generally about 2700F.
What can blast furnace waste slag be used for?
its used a fuel , but has less calorific value as the carbon monoxide percentage is less which is the main combustible gas in the b.f gas. its used in heating the blast of hot air in the blast furnance itself and also can be used in rolling mill, sinter plant, and many more where you need heating
Is a red giant a star?
As stars go, it is the coolest of the types - it is analogous to heating metal in a blast furnace. First it is red hot, them more yellow than red, then white hot, and finally blue-white hot. It is the same with stars.
Why is a red giant star red?
As stars go, it is the coolest of the types - it is analogous to heating metal in a blast furnace. First it is red hot, them more yellow than red, then white hot, and finally blue-white hot. It is the same with stars.
How nut coke is charged in blast furnace?
According to steel.nic.in; Coke Rate is measured in Kgs of BF Coke consumed per tonne of Hot Metal produced in the Blast Furnace(Kg/THM). By convention, this excludes coke (nut/pearl coke) mixed with sinter etc. Introduction of high quality coke to a blast furnace will result in lower coke rate, higher productivity and lower hot metal cost. This principal is followed by many private chemical firms like Coke Oven Consultants and so on.
What is carbon rate in blast furnace?
It is the quantity of carbon consumed by oxygen in unit time.for example coke consumed at tuyer level by hot blast which carry oxygen and this oxygen consume carbon in coke which consume in raceway per unit time.
