Granulometric control of nickel sulfide precipitate

A process wherein nickel in an aqueous stream is recovered as nickel sulfide by precipitation in an autoclave with pressurized hydrogen sulfide in the presence of a large quantity of recycled fine nickel sulfide seed material is improved when operated under continuous conditions by introducing into...

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Bibliographische Detailangaben
Hauptverfasser:	AMES, LAUREN B, LUSSIEZ, GUY W
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INORGANIC CHEMISTRY 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:	A process wherein nickel in an aqueous stream is recovered as nickel sulfide by precipitation in an autoclave with pressurized hydrogen sulfide in the presence of a large quantity of recycled fine nickel sulfide seed material is improved when operated under continuous conditions by introducing into the autoclave a small, controlled quantity of supplemental seed material designed to maintain the seed surface area within required limits.