How tall is a blast furnace?

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A blast furnace used in steelmaking is about 130 ft or 40 metres.
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How Does A Blast Furnace Work?

The basic concept of a blast furnace hasn't changed in more than 100 yrs. Modern furnaces are of course more complex due to newer technologies. First of all the furnace is basically a steel tank, inside it is lined with brick or gunite. The outside shell is protected from the heat by hundreds of "co (MORE)

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.

How is iron removed from a blast furnace?

Iron is removed from a balst furnace, it melts as it seeps down to the higher temperatures at the bottom of the furnace from where it is tapped off. Hope that helps.

What happens in a blast furnace?

Extracting iron from iron ore using a Blast Furnace Introduction The common ores of iron are both iron oxides, and these can be reduced to iron by heating them with carbon in the form of coke. Coke is produced by heating coal in the absence of air. Coke is cheap and provides both the reducing age (MORE)

What waste gases are formed from a blast furnace?

The waste gases are carbon dioxide and nitrogen . They come out at the top of the furnace. The carbon dioxide is from the reduction reaction. The nitrogen is from the air blast. It has taken part in the reactions so has not been changed.

Who invented the first blast furnace?

Some will give credit to Sir Henry Bessemer invented the modern dayblast furnace in 1855. However, if you look historically theChinese invented the blast furnace. By at least the 4th century theChinese have developed blast furnaces to obtain cast iron from ironore. This was 1200 years before the fir (MORE)

What comes out of a blast furnace?

Several things come out of blast furnaces. They are listed here:. 1) A molten version of whatever material was put in it to begin with,. 2) Incredible heat,. 3) Powerfull light,. 4) A waste gas and usually some slag remnant of the fuel that powers the furnace.

What is the composition of blast furnace coke?

The coke we put in blast furnaces to produce iron is almost all carbon . Some ash will be present, and a bit of sulfur, tar and some other residues of the coking process. But carbon is what we're looking for to react with the iron oxide and reduce it to iron in the blast furnace. Use the link below (MORE)

Useful volume of blast furnace?

\nUseful Volume of Blast Furnace is the volume of the furnace from the throat level to the level where the taphole is placed. This is known the way basically because that is the region where the useful products from Blast furnace are present.

Why is blast furnace tapered from bottom of the furnace?

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 increases and we need to ascertain smooth burden descent.

Why is blast furnace tapered from its bottom?

I would imagine so that it provides a wider base of support for stability and also to create vaccuum to generate more heat. An opening too large will end up with turbulence rather than vaccuum. Any replies to szymkow@bigpond.com

Why is hot air blasted into the furnace?

Hot air contains oxygen, which reacts with Coke (a form of carbon) in order to form carbon dioxide, which in turn forms carbon monoxide which is used as a reducing agent.

What is difference between Cupola furnace and blast furnace?

In essence nothing, a Cupola furnace is a type of blast furnace in that it is charged at the top and tapped at the bottom and air is blasted into the furnace via a wind belt and tuyres. A blast furnace in a steel works is a huge structure operated for long periods of time, it is charged with iron or (MORE)

How big is a blast furnace?

As of mid-2012 the largest blastfurnace in Europe was the one at Duisberg, Germany, which is saidto be about 90 metres tall. Please see the link..

How hot 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 is a slag on a blast furnace?

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 impurities such as iron oxide, but is mainly calcium silicate. The formula for calcium silicate is CaSiO 3 .

Where does carbon that is used in a blast furnace come from?

Coal, distilled in a retort to expel the volatile content and leave the carbon as a spongy-looking solid called "coke". \n. (Strange - there are several versions of this question, suggesting to me poor teaching or text-books that focus only on the chemistry and not the overall process, purpose and (MORE)

Why sinter is used in blast furnace?

Sintering has two reasons: 1- You want to put in the blast furnace an homogeneous mix of fluxand mineral. 2- You want something with a lot of pores. So the reductor gas canmake contact with a lot of surface.

What are facts about the blast furnace?

The oldest extant blast furnaces were built during the Han Dynasty of China in the 1st century BC, that's pretty interesting if you ask me. And of course the fact you get a 'SLAG' at the end.

What is coke rate 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, h (MORE)

Why is iron from blast furnace not very useful?

Hot air is blasted into the furnace causing coke (carbon) to burn rapidly and raise the temperature to 2000 °C. carbon + oxygen carbon dioxide + heat. C(s) + O2(g) CO2(g) The carbon dioxide then reacts with hot carbon to form carbon monoxide. carbon dioxide + carbon carbon monoxide (MORE)

What is dust catcher in blast furnace?

It removes the heavy dust particles coming along with the BF(Blast Furnace) gas by reducing the velocity of the gas so that the dust particles are left as the gas lost it's ability to carry the dust particles

Is blast furnace a batch furnace?

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 relining or other workis a major event in its life.

What is the problem with the iron you get from the blast furnace?

The iron that comes out the blast furnace is called cast iron . It is about 96% iron and 4% carbon, and this carbon impurity makes it too brittle to use in constructure. Pure iron, however, is too soft, all pure metals are. That's why we make steel. Three of the most common steels are: Medium steel (MORE)

Why is CO2 important in blast furnace?

because co2 is highly flamable. it is a mixture of carbon and oxygen. its combanation is carbon one and oxygen two. (yes im a little nerdy at this stuff. lolz.)

What are the proess of iron production in blast furnace?

First we add the basic iron production elements (i.e, limiston,coreand processed iron e.g hematite,Fe 2 O 3 ) the coke is react with oxygen and form crbone monoxide the limestone decomposed to CaO and carbon dioxide,CO 2 carbondioxide,CO 2 react with Fe 2 O 3 to form Fe and CO CaO (reaction flu (MORE)

What raw material are put into a blast furnace?

The blast furnace is a huge, steel stack lined with refractory brick, where iron ore , coke and limestone are dumped into the top, andpreheated air is blown into the bottom. The raw materials require 6to 8 hours to descend to the bottom of the furnace where theybecome the final product of liquid (MORE)