Page 65 - I want to create content about steel!

SUMMARY ④ Korea Iron & Steel Association

How is steel recycled? Can we save Earth by using steel?

Let's take a look at the process by which used metal goods are regenerated into brand new products. What makes steel better for environmental preservation than other materials, such as plastic?

❖ IntroductIon of the electrIc furnace Process
What is the most recycled material in the world? It is metal, more specifically steel, with a recycling rate of 97.6%. Used 01. Long-lasting — extended life
metals in automobiles and food cans are sorted and recycled as ‘scrap metal.’ A steelmaker equipped with an electric
Having a long lifespan, steel used in buildings
furnace melts the scrap to regenerate it into new steel products, such as reinforcing bars and steel sections used in
and bridges last close to 100 years.
construction.
Steel used in automobiles and machines also
enjoy more than 10 years of life.
Building infrastructure Machines Automobiles
lasts 50 to 100 years last 10 to 20 years last 15 years
01 Scrap
06 Heating
07 Rolling
02 Electric furnace
08 Cutting 02. Infinitely reusable
03 Refiner
09 Cooling & Forming Steel has a significantly higher recycling rate than other materials
04 Continuous caster
such as aluminum, plastic, and wood. After being manufactured Remanu-
Collection Reuse/recycle
and used as products, steel is recovered and 97.6% recycled. facture
05 Semi-finished product
In particular, the automotive scrap recycling rate is almost 100%.
Above all, this recycling and reproduction process can be
10 Production of new steel
repeated indefinitely.

Section That means the rebars used to build our home
Depending on its shape, a section might have been sourced from bicycles or
is called an ‘H-beam’ or an ‘I-beam’ that is cars. I learned that even when recycled, 03. Zero Waste
used to serve as the steel frame for high- the quality of steel is not compromised.
Various by-products (such as slag, by-product gas, and
rise buildings.
coal tar) are generated during steelmaking. Even these by-
Steel bar products find their use. Hence, steel generates close to zero
Rebar is a type of steel bar processed into waste.
desired shapes, rounded or hexagonal,
A piece of A piece of
knowledge and cut to length to be applied to ships, knowledge 98% recycling rate of steemaking by-products
automobiles, and railways.

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