VERFAHREN ZUR KONZENTRIERUNG ODER GEWINNUNG VON NICHTEISENMETALLEN

A process for recovering or concentrating Zn and Pb from primary or secondary raw materials, admixed with coal, the coal being partially burnt to produce CO, is carried out in two stages, during the first of which there is direct reduction of the material due to the effect of the coal and volatiliza...

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Bibliographic Details
Main Author D'ALTILIA,GIANLUIGI
Format Patent
LanguageGerman
Published 16.09.1982
Subjects
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:A process for recovering or concentrating Zn and Pb from primary or secondary raw materials, admixed with coal, the coal being partially burnt to produce CO, is carried out in two stages, during the first of which there is direct reduction of the material due to the effect of the coal and volatilization of zinc and of lead oxide, whereas in the second stage there is an oxidation in the vapour phase of the zinc produced in the first stage by the action of air and/or oxygen. An apparatus for carrying out the process is a reactor having a frustoconical outline and comprising a metal casing (2) internally lined with a refractory material (3) and rotated about its geometrically arranged vertical axis (1), the reactor being equipped with a bottom drain hole (5), for liquid material.
Bibliography:Application Number: DE19823207026