DE502586C - Corrosion of sulphidic ores, especially zinc blende, in two stages - Google Patents

Corrosion of sulphidic ores, especially zinc blende, in two stages

Info

Publication number
DE502586C
DE502586C DEM110446D DEM0110446D DE502586C DE 502586 C DE502586 C DE 502586C DE M110446 D DEM110446 D DE M110446D DE M0110446 D DEM0110446 D DE M0110446D DE 502586 C DE502586 C DE 502586C
Authority
DE
Germany
Prior art keywords
zinc blende
stages
corrosion
especially zinc
roasting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEM110446D
Other languages
German (de)
Inventor
Dipl-Ing Hans Klencke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metallgesellschaft AG filed Critical Metallgesellschaft AG
Priority to DEM110446D priority Critical patent/DE502586C/en
Application granted granted Critical
Publication of DE502586C publication Critical patent/DE502586C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/02—Roasting processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/02—Preliminary treatment of ores; Preliminary refining of zinc oxide

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

Abröstung sulfidischer Erze, insbesondere von Zinkblende, in zwei Stufen Es hat sich in der Praxis erwiesen, daß bei der Abröstung sulfidischer Erze, z. B. Zinkblende, in besonders feiner Form, z. B. in flottiertem Zustand, diese - einerlei, ob vollkommen entschwefelt oder mit einem gewissen Schwefelgehalt behaftet -, wenn sie den Röstofen verläßt, in den meisten Fällen keine oder nur eine geringe Veränderung ihrer Korngröße aufweist. Diese Tatsache ist bei der späteren Verarbeitung der Zinkblende, ob diese nun nach erfolgter Totröstung in der Muffel erfolgt, oder ob die Blende nach nur teilweiser Abröstung noch einer darauffolgenden vollkommenen Entschwefelung, z. B. auf dem Dwight-Lloyd-Apparat, unterworfen werden muß, hinderlich. Im letzteren Fall, also wenn es sich darum handelt, vorgeröstete Blende einer endgültigen Entschwefelung auf dem Dwight-Lloyd-Apparat zu unterwerfen, ist es nun bekannt, dem vorgerösteten Erz vor der Aufgabe auf den Dwight durch Zumischung von Ton als Flußmittel den Grad der erforderlichen Frittung zu geben, der zu einer Verbesserung, z. B. des Zinkausbringens, notwendig ist.Roasting of sulfidic ores, especially zinc blende, in two Stages It has been shown in practice that during the roasting of sulphidic ores, z. B. zinc blende, in a particularly fine form, for. B. in floated condition, this - it doesn’t matter whether it is completely desulphurised or has a certain sulfur content - When it leaves the roasting furnace, in most cases little or no Has change in their grain size. This fact is with later processing the zinc blende, whether this takes place in the muffle after dead roasting, or whether the aperture is complete after only partial roasting Desulfurization, e.g. B. on the Dwight-Lloyd apparatus, must be subjected to a hindrance. In the latter case, that is, when it comes to pre-roasted aperture of a final one To subject desulphurization on the Dwight-Lloyd apparatus, it is now known the pre-roasted ore before being fed to the Dwight by adding clay as To give the flux the degree of frying required, which leads to an improvement, z. B. the zinc application is necessary.

Neu ist nun die Erkenntnis, dem Röstgut, z. I3. der Zinkblende, solche Substanzen, die bei Abröstung Frittung hervorrufen, schon während der Vorröstung zuzusetzen. Diese Substanzen können je nach Beschaffenheit der Zinkblende verschiedenartiger Natur sein. So können als Flußmittel gemäß Erfindung insbesondere Lehm, dann Kieselsäure oder Eisensulfat oder Kieselsäure und Eisensulfat zugleich u. dgl. verwendet werden. Die Substanzen können vor der Zinkblendeaufgabe in den Röstofen zugemischt werden. Man kann sie aber auch, falls es sich als zweckmäßig erweisen sollte, dem Röstgut während seines Durchganges durch den Röstofen zugeben, bei Etagenöfen beispielsweise durch Zuführung in eine oder mehrere der Etagen. Zweck der Zumischung des Flußmittels ist, die feinen Partikelchen des Erzes nach Möglichkeit zu einer Korngröße zusammenfritten zu lassen, wie sie zur späteren Verarbeitung, z. B. auf dem Dwight-Lloyd-Apparat, zweckmäßig ist.What is new is the knowledge that the roasted material, z. I3. the zinc blende, such Substances that cause frying when roasted, even during the pre-roasting to add. These substances can vary depending on the nature of the zinc blende Be nature. In particular, clay, then silica, can be used as the flux according to the invention or iron sulfate or silica and iron sulfate and the like can be used at the same time. The substances can be mixed into the roasting oven before the zinc blend is added. But you can also, if it should prove to be useful, the roasted food add during its passage through the roasting oven, for example with deck ovens by feeding into one or more of the floors. Purpose of adding the flux is to frit the fine particles of the ore together to a grain size if possible to leave as they are for later processing, e.g. B. on the Dwight-Lloyd apparatus, is appropriate.

Claims (1)

PATENTANSPRÜCHE: t. Verfahren zur Abröstung sulfidischer Erze, insbesondere von Zinkblende, in zwei Stufen, dadurch gekennzeichnet, daß dem Röstgut vor oder während der ersten Stufe Flußmittel, insbesondere Lehm, zugemischt werden. z. Verfahren nach Anspruch r, dadurch gekennzeichnet, daß die Flußmittel während des Durchgangs des Röstguts durch den Ofen an verschiedenen Stellen in diesen eingeführt werden.PATENT CLAIMS: t. Process for roasting sulphidic ores, in particular of zinc blende, in two stages, characterized in that the roast before or flux, in particular clay, is admixed during the first stage. z. procedure according to claim r, characterized in that the flux during the passage of the roasted material can be introduced into the oven at various points.
DEM110446D 1929-06-05 1929-06-05 Corrosion of sulphidic ores, especially zinc blende, in two stages Expired DE502586C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM110446D DE502586C (en) 1929-06-05 1929-06-05 Corrosion of sulphidic ores, especially zinc blende, in two stages

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM110446D DE502586C (en) 1929-06-05 1929-06-05 Corrosion of sulphidic ores, especially zinc blende, in two stages

Publications (1)

Publication Number Publication Date
DE502586C true DE502586C (en) 1930-08-19

Family

ID=7326982

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM110446D Expired DE502586C (en) 1929-06-05 1929-06-05 Corrosion of sulphidic ores, especially zinc blende, in two stages

Country Status (1)

Country Link
DE (1) DE502586C (en)

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