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Korea Iron & Steel Association Chapter 5●The world of steel: how does it benefit the environment?

Minerals promote
the growth and photosynthesis By building a sea forest By raising the ratio of slag in lieu of
of algae rooted in artificial reefs, using artificial reefs, the limestone, a natural element and a main
and purify polluted sediments aquatic life of the damaged ingredient of cement, limestone use can Reducing limestone use
to improve water quality. marine ecosystem can be cut by 45%. can help to cut carbon
be quickly restored dioxide emissions by up
and biodiversity fostered in to 60%.
the habitat.

It’s like Moreover, the use of slag cement extends the life of concrete
building homes structures. Therefore, it is widely used in large-scale concrete
for the sea construction projects, such as dams, tunnels, and large
creatures! structures.

Correct! Geenhouse gases are mitigated
because through photosynthesis, sea forest
algae absorb carbon dioxide and store some
of it in the marine soil! Hanna, you

Do you remember the have good
long yellow pipes during observation!
the steelworks tour?
Eco-friendly Eco-friendly cement cement (Thumbs up)
Eco-friendly
cement is also
I do!
made from slag! They were
very long!
(Thumbs up)

Tidbit Artificial reefs serve as ‘planters,’ from which sea mustard, kelp, and other marine plants grow. Algae Tidbit About 87% of the blast furnace slag, equivalent to 14 million tons, is sent to cement companies every
multiply actively on artificial reef to become both a food source and shelter for fish. year to be used as raw material.

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