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来自 Pohang University of Science and Technology 的课程

Ferrous Technology I

27 个评分

Pohang University of Science and Technology

Ferrous Technology I

27 个评分

Steel, ever-evolving material, has been the most preeminent of all materials since it can provide wide range of properties that can meet ever-changing requirements. In this course, we explore both fundamental and technical issues related to steels, including iron and steelmaking, microstructure and phase transformation, and their properties and applications.

从本节课中

Iron and steelmaking I: Ironmaking and raw materials

The next four courses cover the whole steel production process. This particular course covers the ironmaking from raw materials. Processes from the pretreatment of raw materials to the reaction inside the blast furnace are treated. Alternative ironmaking process to reduce the environmental problems will also be introduced.

Introduction7:30

Raw materials5:56

Ironmaking process13:04

Other issues3:53

与讲师见面

Kim, Nack Joon
Professor
Graduate Institute of Ferrous Technology
Suh, Dong Woo
Associate Professor
Graduate Institute ofFerrous Technology
Kang, Youn-Bae
Professor
Graduate Institute of Ferrous Technology
Sung-Mo Jung
Professor
Pohang University of Science and Technology
Kim, Sung-Joon
Professor
Graduate Institute ofFerrous Technology

Development of blast furnace for iron making allows the best production of iron.

This could contribute to our life.

However, the blast furnace and the iron making process causes some trouble.

The emitted gases from whole iron making process from blast furnace and

coke plant and sinter plant are not good at the environment.

These gases are composed of carbon monoxide,

carbon dioxide, and sometimes SOx and NOx and some dust.

If they are emitted to air,

then it could cause air pollution and global warming.

So iron makers and steel makers try to limit the emission of these gases.

The one way is to recycle these gases,

removing dust from this emitted gas,

and reheat this gas,

or this is just used to heat the other raw metals in the plant.

This results in the economic use of this gasses.

And also recycle this gasses ensures that

the stable you drop this gas without purchasing this gas from external source.

It could lower the cost and it could minimize some shortage.

On the other hand, there is new direction for iron making to minimize this kind of gases.

Several types of alternative iron making process have been investigated and developed,

in order not to emit this kind of gases and to compete with available low quality ores.

However, many of them were not so successful yet,

but probably the only commercially successful process is FINEX.

Now, let's compare these two processes.

That's inside, We see the blast furnace,

the conventional iron making process.

We use high quality ores and high quality coal in order to produce sinter and coke.

And they are charged in the blast furnace to form this kind of structure inside.

This is quite successful process,

but it requires good quality raw materials and during coke making and sinter making,

they produce a lot of the pollutions and also blast furnace produces some depleted gases.

On the other hand,

in FINEX process high quality ore is not required.

We may use low quality fine ores and just non-cocking coal is used to produce iron.

So this does not require coke plant and sinter plant,

so it could minimize the pollution and it could also lower

the product cost due to use of low quality low materials.

We may expect the other type of

new iron making process which could be developed in near future.

Once hot metal is produced from iron making plant,

then this is to be tapped into torpedo car and delivered to the steelmaking plant.

The hot metal should be converted into liquid steel.

This will be done in steelmaking plant and this will be discussed in next lesson.

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