{
  "$type": "site.standard.document",
  "description": "The present disclosure provides a method for preparing lithium iron phosphate from ferric hydroxyphosphate, including: purifying ferrous sulfate to form a ferrous sulfate solution, adding hydrogen peroxide, phosphoric acid, an ammonium dihydrogen phosphate solution and ammonia water into the…",
  "path": "/patents/1387368",
  "publishedAt": "2025-10-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C01B25/375",
    "HUBEI RT ADVANCED MAT GROUP COMPANY LIMITED [CN]"
  ],
  "textContent": "The present disclosure provides a method for preparing lithium iron phosphate from ferric hydroxyphosphate, including: purifying ferrous sulfate to form a ferrous sulfate solution, adding hydrogen peroxide, phosphoric acid, an ammonium dihydrogen phosphate solution and ammonia water into the ferrous sulfate solution and then reacting to form a mixed slurry, holding the mixed slurry at a temperature for a period of time, and then washing with water and subjecting to press filtration to form ferric hydroxyphosphate precursors with different iron-phosphorus ratios; then flash drying, sintering at a high temperature, and pulverizing to obtain ferric hydroxyphosphate precursors with different iron-phosphorus ratios and different specific surface areas; pulverizing and mixing the ferric hydroxyphosphate precursors to obtain finished products of ferric hydroxyphosphate, mixing the ferric hydroxyphosphate with a high iron-phosphorus ratio with the ferric hydroxyphosphate with a low iron-phosphorus ratio according to a certain proportion, then proportioning with a lithium source and an iron source according to a certain proportion, and adding a carbon source and an additive to form a mixed material; and subjecting the aforementioned mixed material to ball milling, sanding, spray drying, sintering, pulverizing, sieving, blending, packaging and the like procedures to obtain a finished product of lithium iron phosphate.",
  "title": "METHOD FOR PREPARING LITHIUM IRON PHOSPHATE FROM FERRIC HYDROXYPHOSPHATE, AND USE THEREOF"
}