How tall is a blast furnace?
A blast furnace used in steelmaking is about 130 ft or 40 metres.
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A blast furnace is used to extract iron from its ore.
James Beaumont Neilson
It is because hot air is literally blasted in through the bottom of the furnace.
Hot air is blasted into the blast furnace to burn the coke (a cheap form of carbon) added to form carbon dioxide.
Hot air under pressure
it is tappered to accomodate the gradual volume expansion of the solid charge as it descends through zones of Stack,from top to bottom in the stack the temperature gradually i…ncreases and we need to ascertain smooth burden descent.
because hot air is coming through the bottom
Slag is the waste which is skimmed off the top of the molten iron that comes out of the blast furnace. It is a mixture of calcium and magnesium compounds, plus other impuritie…s such as iron oxide, but is mainly calcium silicate. The formula for calcium silicate is CaSiO 3 .
The limestone decomposes to quicklime and carbon dioxide, and the quicklime removes acidic impurities (eg SiO2). So basically limestone is to remove impurities
Iron put in blast furnace from its refining
Blast furnace = Hochofen
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 (nu…t/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.
Its because air is forced into the furnace to increase temperature. Steve.
A blast furnace runs continuously, and input materials arecontinually dumped in at the top to make their way down through thefurnace. Shutting down a blast furnace for relinin…g or other workis a major event in its life.
what are blast and crucible furnaces
A blast furnace is used to separate iron from iron ore. A cupolafurnace is used to melt iron in a foundry for casting in molds
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 ?