Metallurgical furnace
A metallurgical furnace, more commonly referred to as a furnace, is a device used to heat and melt metal ore to remove gangue, primarily in iron and steel production. The heat energy to fuel a furnace may be supplied directly by fuel combustion, by electricity such as the electric arc furnace, or through induction heating in induction furnaces. There are several different types of furnaces used in metallurgy to work with specific metal and ores.[1]
Industrial furnace from 1907.

The Manufacture of Iron -- Filling the Furnace, an 1873 wood engraving
Smelting furnaces
Smelting furnaces are used in smelting to extract metal from ore. Smelting furnaces include:
- The blast furnace, used to reduce iron ore to pig iron
- Steelmaking furnaces, including:
- Puddling furnace
- Reverberatory furnace
- Bessemer converter
- Open hearth furnace
- Basic oxygen furnace
- Electric arc furnace
- Electric induction furnace
Other furnaces
- Furnaces used to remelt metal in foundries.
- Furnaces used to reheat and heat treat metal for use in:
- Rolling mills, including tinplate works and slitting mills.
- Forges
- Open hearth furnace
- Electric arc furnace
gollark: Especially given that it has many cases which are not very special.
gollark: ```Admins and moderators interpret the rules. You cannot argue about special cases.```Yet another ridiculous bit.
gollark: ```Advertising or installing software that could be considered malicious or dangerous without the player’s informed consent is forbidden.```Wait, so... to advertise stuff... you need informed consent... but you can't inform them?
gollark: You can use this as a rough template for an "antivirus".
gollark: ```lualocal banned = { BROWSER = { "EveryOS", "Webicity" }, BAD_OS = { "QuantumCat" }} function potatOS.check_safe(code) local lcode = code:lower() for type, list in pairs(banned) do for _, thing in pairs(list) do if lcode:find('[^"]' .. thing:lower()) then local text = ([[This program contains "%s" and will not be run.Classified as: %s.If this is a problem, please contact the potatOS developers.]]):format(thing, type) return false, function() printError(text) end end end end return trueend local boot_done = false local real_load = load function load(code, ...) if boot_done then local ok, replace_with = potatOS.check_safe(code) if not ok then return replace_with end return real_load(code, ...)end```
References
- D, C. H. (1923-11-24). "Metallurgical Furnaces". Nature. 112 (2821): 755–756. doi:10.1038/112755a0. ISSN 1476-4687.
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