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2. Open-hearth furnace - Wikipedia

   en.wikipedia.org/wiki/Open-hearth_furnace

   Tapping open hearth furnace, Fagersta steelmill, Sweden, 1967. Carl Wilhelm Siemens developed the Siemens regenerative furnace in the 1850s, and claimed in 1857 to be recovering enough heat to save 70–80% of the fuel. This furnace operates at a high temperature by using regenerative preheating of fuel and air for combustion. In regenerative ...

3. Pierre-Émile Martin - Wikipedia

   en.wikipedia.org/wiki/Pierre-Émile_Martin

   Pierre-Émile Martin (French: [pjɛʁ emil maʁtɛ̃]; 18 August 1824, Bourges, Cher – 23 May 1915, Fourchambault) was a French industrial engineer.He applied the principle of recovery of the hot gas in an open hearth furnace, a process invented by Carl Wilhelm Siemens.

4. Carl Wilhelm Siemens - Wikipedia

   en.wikipedia.org/wiki/Carl_Wilhelm_Siemens

   The regenerative furnace is the greatest single invention of Charles William Siemens, using a process known as the Siemens-Martin process. The electric pyrometer , which is perhaps the most elegant and original of all William Siemens's inventions, is also the link which connects his electrical with his metallurgical researches.

5. Second Industrial Revolution - Wikipedia

   en.wikipedia.org/wiki/Second_Industrial_Revolution

   The next great advance in steel making was the Siemens–Martin process. Sir Charles William Siemens developed his regenerative furnace in the 1850s, for which he claimed in 1857 to able to recover enough heat to save 70–80% of the fuel. The furnace operated at a high temperature by using regenerative preheating of fuel and air for combustion ...

6. Electric arc furnace - Wikipedia

   en.wikipedia.org/wiki/Electric_arc_furnace

   An electric arc furnace (EAF) is a furnace that heats material by means of an electric arc. Industrial arc furnaces range in size from small units of approximately one-tonne capacity (used in foundries for producing cast iron products) up to about 400-tonne units used for secondary steelmaking.

7. History of manufactured fuel gases - Wikipedia

   en.wikipedia.org/wiki/History_of_manufactured...

   Horizontal view of a retort and furnace (1819) The basic design of gaslight apparatus was established by Boulton & Watt and Samuel Clegg in the period 1805–1812. Further improvements were made at the Gas Light and Coke Company, as well as by the growing number of gas engineers such as John Malam and Thomas Peckston after 1812.