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Why is iron cheaper than other metals by using the blast furnace?
Wiki User
∙ 13y ago
Partly due to scale of manufacture, partly due to the cheap and simple method of extraction from the ore, partly due to the ease with which the adundant ore can be mined, partly due to the high (compared to many metals) metal content of ores.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoBecause the blast furnace doesn't use electricity
Wiki User
∙ 15y agoIts very commonly found in rocks minerals ext.
Wiki User
∙ 12y agoit makes it cheaper because you can make a big load of iron in a small amount of time, which uses less energy and time.
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Is blast furnace a batch furnace?
A blast furnace runs continuously, and input materials are continually dumped in at the top to make their way down through the furnace. Shutting down a blast furnace for relining or other work is a major event in its life.
What is the function of septum valves in blast furnace?
Septum Valves are installed after the dust collector venturi scrubber , to decrease the pressure of Top gas from the blast furnace to supply it to other processes at low pressure.
What is the waste gas in the Blast Furnace used for?
It is mostly carbon monoxide and nitrogen gases which has some heating value. So it is typically recovered and mixed with natural gas, &/or coke oven gas and used in boilers for steam or other steel heating furnaces for further processing of steel.
What role does the reducing agent play in a blast furnace?
The reducing agent grabs oxygen or other impurities from the molten metal so making a more refined productFor example, coke reduces ZnO to Zn and Fe2O3 to Fe
Will replacing the heat exchanger prolong the life of your furnace?
The heat exchanger in a furnace is the primary component in a furnace. That said, their are circuit boards, motors and other components that can also fail regardless of the age of the heat exchanger. In my opinion, if you can afford to replace the furnace, you would be much better off. The cost of the heat exchanger with labor is probably not too much less than replacing the entire furnace.
Is blast furnace a batch furnace?
A blast furnace runs continuously, and input materials are continually dumped in at the top to make their way down through the furnace. Shutting down a blast furnace for relining or other work is a major event in its life.
How is steel different from blast furnace iron?
Blast furnace iron is pure iron. It isn't mixed with any other elements. In steel, iron is mixed with small amounts of carbon.
What is the function of septum valves in blast furnace?
Septum Valves are installed after the dust collector venturi scrubber , to decrease the pressure of Top gas from the blast furnace to supply it to other processes at low pressure.
how you get steel?
Steel is just a form of iron that is refined differently to iron in a blast furnace, as it is allowed to have a small amount of carbon and other alloying metals. However other forms of steel such as weathering steel and stainless steel have other metals (chromium, magnesium etc.) added to them to give them the properties that they require for their particular purpose.
What is pool iron scrap?
Basically it is from Blast furnace where in which liquid steel is made prior to arriving at the other (BOF) Basic Oxygen Furnace, and obviously needs to reach a certain Heat to the pull across. It is waste generated during process of melting of steel (by means of spillage while discharging from blast furnace).
What is the purpose of heating iron ore to a high temp in a blast furnace?
to heat the iron so that it separates from other elements in the ore
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).
Does iron ore slag sink to the bottom of the 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 CaSiO3.
Why is iron and steel mineral based?
Iron comes from iron ore. Iron ore is a compound of Iron and oxygen. A similar compound is called rust. The ore is mined in the ground. It used to be made in large blast furnaces. The iron ore would be mixed with coke (a product made from coal). They would be placed in the blast furnace. Then the furnace would be started and Iron would flow out the bottom. Steel would be produced by adding other metals to the iron and removing some of the carbon.
Why are alloys created?
Alloys are more durable than normal metals, this is because its lots of metals together. Its also cheaper to produce than some other metals.
What are the processes involved in steel making?
Iron ore is heated to melting point in a blast furnace. Other elements are added depending on the type of steel required Scrap steel can be melted down in an electric furnace also.
What effect did improved metal - making processes have during the industrial revolution?
Cheaper higher quality metals became available during the Industrial Revolution.
