More Progress in Steel Production

1.

More Progress
in Steel Production

2.

Pig-iron
Iron coming from a blast furnace is called pigiron

3.

Blast furnace
Still contains many
impurities which
have to be
removed before it
can be converted
into steel.

4.

Steel

5.

Henry Bessemer
(1813 - 1898)

6.

Bessemer Converter

7.

Siemens ‘open hearth’ furnaces

8.

Electric arc’ furnaces

9.

thanks for
attention!!!