Method of dissolving material which contains zinc oxide and zinc silicate

The invention relates to a process for recovering zinc from silicates which contain zinc oxide-containing material. According to the process, the zinc compounds are dissolved under conditions which are such that the silicates remain undissolved and consequently do not give rise to filtration problem...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	FUGLEBERG, SIGMUND PEDER
Format:	Patent
Sprache:	eng ; fin ; swe
Schlagworte:	CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F FERROUS OR NON-FERROUS ALLOYS INORGANIC CHEMISTRY METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention relates to a process for recovering zinc from silicates which contain zinc oxide-containing material. According to the process, the zinc compounds are dissolved under conditions which are such that the silicates remain undissolved and consequently do not give rise to filtration problems. The silicate-containing residue is treated by the Waelz process, with the greater part of the silicic acid in the silicates being bound to the iron silicate slag which is formed in the Waelz process, and the zinc being recirculated to the solution, chiefly in the form of oxide.