{
  "$type": "site.standard.document",
  "description": "A method for producing a cobalt solution by removing magnesium ions from a cobalt-containing solution obtained by subjecting battery powder resulting from lithium ion battery waste to at least a leaching process, the cobalt-containing solution containing magnesium ions, wherein the method includes…",
  "path": "/patents/1390625",
  "publishedAt": "2026-04-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B09B3/70",
    "JX METALS CIRCULAR SOLUTIONS CO LTD [JP]"
  ],
  "textContent": "A method for producing a cobalt solution by removing magnesium ions from a cobalt-containing solution obtained by subjecting battery powder resulting from lithium ion battery waste to at least a leaching process, the cobalt-containing solution containing magnesium ions, wherein the method includes: a magnesium separation step of extracting cobalt ions from the cobalt-containing solution using a solvent containing a carboxylic acid-based extracting agent to separate the magnesium ions, and then stripping the cobalt ions from the solvent to obtain the cobalt solution as a stripped solution.",
  "title": "METHOD FOR PRODUCING COBALT SOLUTION"
}