Block of the Week: Blast Furnace

In the true world, blast furnaces are a factor too. The title comes from the way in which these furnaces “blast” air into the furnace at pace, growing the temperature considerably – a bit like blowing on a barbecue. They’re largely related to the economic revolution, however blast furnaces have been dug up in China that date again to the first century AD – powered by horses, people, and waterwheels.

Within the West, blast furnaces got here into extra frequent use within the Center Ages – notably as soon as cast-iron cannons turned part of warfare. The invention of the steam engine allowed Britain to supply huge portions of iron from its blast furnaces within the 18th century, which in flip allowed railways to unfold throughout the British empire – a lot of that are nonetheless in use in the present day.

Blast furnaces are nonetheless an essential a part of iron-making within the fashionable period, they usually’re extremely environment friendly. The most important on the earth is positioned in South Korea – it’s 6,000 cubic meters in dimension, and may…

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