Entity: smelting
URI: https://data.geoscience.earth/ncl/ProcessingActivityType/smelting
Type: Concept
no description supplied
experimental
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pyrometallurgy
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| definition |
Smelting is a form of extractive metallurgy, its main use is to produce a metal from its ore. Smelting involves thermal reactions in which at least one product is a molten phase. Metal oxides can then be smelted by heating with coke or charcoal (forms of carbon), a reducing agent that liberates the oxygen as carbon dioxide leaving a refined mineral. Carbonate ores are also smelted with charcoal, but are sometimes need to be calcined first. Other materials may need to be added as flux, aiding the melting of the oxide ores and assisting in the formation of a slag, as the flux reacts with impurities, such as silicon compounds. Smelting usually takes place at a temperature above the melting point of the metal, but processes vary considerably according to the ore involved and other matters.
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processing activity type
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| label |
smelting
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| notation |
13.1.3..
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| pref label |
smelting
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| source |
smelting
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| type |
Concept
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| date accepted |
8 janv. 2019 16:58:49.752
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| date submitted |
8 janv. 2019 16:37:37.152
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| definition |
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| item class |
Concept
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| label |
smelting
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| modified |
27 févr. 2019 10:34:33.171
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| notation |
smelting
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| register |
processing activity type
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| status |
status experimental
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| type |
register item
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| version info |
5
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