Method for preparing manganese chloride, ferrous chloride and calcium chloride from manganese tailings

The invention provides a method for preparing manganese chloride, ferrous chloride and calcium chloride from manganese tailings, comprising the following steps: crushing the manganese tailings into particles of 80-100 meshes, mixing and reacting with excessive hydrochloric acid solution, filtering t...

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Bibliographische Detailangaben
1. Verfasser:	XIE SHANQING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention provides a method for preparing manganese chloride, ferrous chloride and calcium chloride from manganese tailings, comprising the following steps: crushing the manganese tailings into particles of 80-100 meshes, mixing and reacting with excessive hydrochloric acid solution, filtering the reactant liquid to obtain filtrate mainly containing ferrous chloride, magnesium chloride and manganese chloride; adding excessive sodium sulfide to the filtrate, and filtering the reactant liquid to obtain filter cake containing manganese sulfide, ferrous sulfide and calcium sulfide; reacting the filter cake containing manganese sulfide, ferrous sulfide and calcium sulfide with the hydrochloric acid solution to obtain reactant liquid containing manganese chloride, ferrous chloride and calcium chloride; and delivering the reactant liquid containing manganese chloride, ferrous chloride and calcium chloride into a reduced pressure distiller for performing reduced pressure distillation to obtain a saturated solutio