slag; molten slag
Technical term in metallurgy for the waste material separated from molten metal during smelting or refining.
At the steelworks, a large amount of slag is produced.
Slag is sometimes reused as a raw material for cement.
Also means 'slag', but more specifically refers to ore smelting waste. 溶滓 is broader, covering any molten metal waste.
Standard kanji form for 'slag' in metallurgy.
Variant using 熔 (a non-jōyō kanji for melting). Rarely used; 溶滓 is preferred.
Compound of 溶 (melt) and 滓 (dregs, sediment). The reading ようさい is the standard on'yomi; ようし is a less common alternative reading.