flash smelting; autogenous smelting
Technical term in metallurgy for a smelting process that uses the heat from oxidation of the ore itself, without external fuel.
Flash smelting is widely used in copper refining.
Standard kanji spelling for this metallurgical term.
Variant using 熔 (smelt) instead of 溶 (dissolve/melt); both are used in technical contexts.
Compound of 自溶 (self-melting) and 製錬 (smelting/refining). The exact historical derivation is uncertain; the term is a modern technical coinage.