Roast

{
  "id": "MLC-T-IND-004893",
  "term": "Roast",
  "field": "Industrial and trades",
  "definition": "To heat an ore or concentrate in the presence of air, below its melting point, to effect a chemical change. This pyrometallurgical process converts sulfides to oxides, removes volatile impurities, or prepares the material for subsequent extraction steps. Roasting is a common preliminary step in the production of metals like copper and zinc.",
  "subject": "Metalworking",
  "translations": {
    "de": "rösten",
    "es": "tostar",
    "fr": "griller"
  },
  "url": "https://mlchart.com/terminology/industrial/roast/"
}