Green extraction method of ionic rare earth ore calcium salt system
The invention discloses a green extraction method of an ionic rare earth ore calcium salt system. Calcium salt is taken as an ore leaching agent, calcium oxide is taken as a purification impurity removal agent, and calcium oxide is taken as a precipitant; the ore leaching agent, chlorine removal and...
Gespeichert in:
Hauptverfasser: | , , , , , , , , , , , , , , , |
---|---|
Format: | Patent |
Sprache: | chi ; eng |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | The invention discloses a green extraction method of an ionic rare earth ore calcium salt system. Calcium salt is taken as an ore leaching agent, calcium oxide is taken as a purification impurity removal agent, and calcium oxide is taken as a precipitant; the ore leaching agent, chlorine removal and heavy metal elements are recovered in a form of Friedel's salt; no ammonia nitrogen and high-salt wastewater is discharged in the whole process, the process is smooth, the product impurity content is low, and after ore closing, the mining area environment influence is small, and green and environment-friendly mining of ionic rare earth can be implemented. In addition, the method takes calcium chloride as a main component, a small amount of acid regulators such as aluminum chloride, ferric chloride and ammonium chloride are added, the formed composite salt ore leaching agent is a main component of ore soil, and compared with an ore leaching system with ammonium salt, magnesium salt, sodium salt and potassium salt a |
---|