{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreidf2iu4crvkptm24icmflx4cubqwffhy6skwjgji264l5n4aaugui"
    },
    "mimeType": "image/png",
    "size": 93488
  },
  "description": "Provided is a method for cost-effectively recovering valuable metals from waste lithium-ion batteries through a pyrometallurgical process. The present invention pertains to a method for recovering valuable metals from waste lithium-ion batteries, the method comprising: an oxidation roasting step S…",
  "path": "/patents/1379328",
  "publishedAt": "2026-03-12T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C22B1/02",
    "SUMITOMO METAL MINING CO., LTD."
  ],
  "textContent": "Provided is a method for cost-effectively recovering valuable metals from waste lithium-ion batteries through a pyrometallurgical process. The present invention pertains to a method for recovering valuable metals from waste lithium-ion batteries, the method comprising: an oxidation roasting step S in which raw materials including waste lithium-ion batteries are subjected to an oxidation roasting treatment; and a reduction step S in which the obtained oxidation roasted product is reduced in the presence of carbon. In the oxidation roasting step S, calcium carbonate is charged into a furnace together with the raw materials including waste lithium-ion batteries to control the treatment temperature of the oxidation roasting treatment.",
  "title": "METHOD FOR RECOVERING VALUABLE METALS"
}