DictionarysmeltMetal extraction
verb

smelt

SMELT/smelt/

To extract metal from ore by heating.

The furnace smelts iron ore, sending molten metal into a trough.

Historical iron-smelting furnace cutaway, ore and charcoal near small masonry furnace, bright molten metal streams into casting trough, no people, no process instructions or labels.
Etymology

Smelten meant melting or liquefying. In English, smelt applies that heat-driven process especially to ore in a furnace, where the purpose is to separate out the metal.

In context

Cube Chemistry16:47
When they process the tin and smelt it, the waste slag can be further treated to extract tantalum.
Tantalum: The Cursed Element That Funded a Brutal War☠️🧪

More examples

  • Workers smelt copper ore to extract the metal.
  • This plant smelted lead ore for decades.
  • Smelting ore requires intense heat.

Forms

smelt · smelts · smelted · smelting

smelter noun — A furnace or facility for smelting ore.

Similar words

extract
Means removing a substance, not necessarily through heat.
melt
Means turning a solid liquid, not necessarily extracting metal.