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The open hearth furnace was developed in the 19th century as a way to mass produce steel. It uses regenerative preheating of fuel and air to reach high enough temperatures to melt steel. The furnace operates in batches, using scrap metal, pig iron, and limestone. The oxygen burns out impurities from the pig iron over several hours to produce steel of a desired carbon content. The open hearth furnace was slower than the Bessemer process but allowed better quality control and recycling of scrap steel.

Author

mibtisamnasih0000

Language

EN