Entry: smelting
URI: https://data.geoscience.earth/ncl/ProcessingActivityType/smelting
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.
Core metadata
| is a | Concept |
| changed on | 27 Feb 2019 09:34:33.171 |
| submitted by | Abdel FELIACHI |
| accepted on | 8 Jan 2019 15:58:49.752 |
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All metadata properties
| date accepted |
8 Jan 2019 15:58:49.752
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| date submitted |
8 Jan 2019 15:37:37.152
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| definition |
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Concept
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smelting
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| modified |
27 Feb 2019 09:34:33.171
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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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register item
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5
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Definition
| broader |
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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| in concept scheme |
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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