Patent ID: 11891344
Assignee: CHTEM LIMITED
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 11:
12. The method for graded utilization of fluorine and silicon resources in a phosphate ore of claim 11, wherein
the loaded phase after extraction of the cationic extract phase is recycled after water washing and regeneration with the dilute sulfuric acid of 5% to 40%, a volume ratio of the loaded phase after the extraction of the cationic extract phase to water is within a range of 10:1 to 40:1, and a volume ratio of the loaded phase after the water washing to the dilute sulfuric acid ratio is within a range of 10:1 to 40:1;
the loaded phase after extraction of anionic extract phase is recycled after the water washing and regeneration with ammonia of ammonia of 2% to 25%, a volume ratio of loaded phase after the extraction of the anionic extract phase to water is within a range of 10:1 to 40:1, and a volume ratio of the loaded phase after the water washing to the ammonia of 2% to 25% is within a range of 10:1 to 40:1; and
a wash residue produced after two water washing is returned to the step (2) for absorbing the tail gas, and a regeneration waste liquid produced after two regenerations is configured for the acidification of the phosphate ore or fertilizer production.