{
  "$type": "site.standard.document",
  "description": "Preparing battery-grade graphite including: 1) placing mixed waste electrode materials of a failed lithium-ion battery in a muffle furnace, and performing low-temperature roasting surface modification in an air atmosphere yielding a powder; 2) forming a slurry of the powder, placing the slurry in a…",
  "path": "/patents/1381896",
  "publishedAt": "2026-04-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M10/54",
    "BASF SE"
  ],
  "textContent": "Preparing battery-grade graphite including: 1) placing mixed waste electrode materials of a failed lithium-ion battery in a muffle furnace, and performing low-temperature roasting surface modification in an air atmosphere yielding a powder; 2) forming a slurry of the powder, placing the slurry in a flotation machine, and after stirring the slurry, adding a collector and a foaming agent, obtaining a foam product rich in negative electrode graphite) and an ore slurry product rich in positive electrode material) by flotation separation; 3) after filtering and drying the foam product obtained in step (2), performing weak acid washing, obtaining a leached liquid and a leached residue after filtering, and obtaining negative electrode graphite after drying the leached residue; and 4) after filtering and drying the negative electrode graphite of step (3), placing the negative electrode graphite in a high-temperature graphitization furnace and performing oxygen-free heating, to obtain a regenerated graphite product.",
  "title": "METHOD FOR PREPARING BATTERY-GRADE GRAPHITE BY USING MIXED WASTE OF POSITIVE AND NEGATIVE ELECTRODE MATERIALS OF FAILED LITHIUM-ION BATTERY AS RAW MATERIAL"
}