DE275204C - - Google Patents

Info

Publication number
DE275204C
DE275204C DENDAT275204D DE275204DA DE275204C DE 275204 C DE275204 C DE 275204C DE NDAT275204 D DENDAT275204 D DE NDAT275204D DE 275204D A DE275204D A DE 275204DA DE 275204 C DE275204 C DE 275204C
Authority
DE
Germany
Prior art keywords
copper
leaching
roasting
sulfide
roasted
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
DENDAT275204D
Other languages
German (de)
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.)
Publication date
Application granted granted Critical
Publication of DE275204C publication Critical patent/DE275204C/de
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/08—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled
    • B22D17/12—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled with vertical press motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/26—Mechanisms or devices for locking or opening dies
    • 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
    • C22B15/00—Obtaining copper
    • C22B15/0002—Preliminary treatment
    • C22B15/0004—Preliminary treatment without modification of the copper constituent
    • C22B15/0008—Preliminary treatment without modification of the copper constituent by wet 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
    • C22B15/00—Obtaining copper
    • C22B15/0002—Preliminary treatment
    • C22B15/001—Preliminary treatment with modification of the copper constituent
    • C22B15/0013—Preliminary treatment with modification of the copper constituent by roasting
    • 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
    • C22B15/00—Obtaining copper
    • C22B15/0063—Hydrometallurgy
    • C22B15/0065—Leaching or slurrying
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

- Mi 275204 KLASSE 40«. GRUPPE- Wed 275204 CLASS 40 «. GROUP

Patentiert im Deutschen Reiche vom 24. März 1911 ab.Patented in the German Empire on March 24, 1911.

In Verbindung mit dem Verfahren zum Rösten und Auslaugen von Kupfersulfiderzen und nachträglicher elektrolytischer Ausfällung des Kupfers ist vorgeschlagen worden, ein nur teil weises Rösten durchzuführen, so daß ein Teil des Kupfers nach dem Auslaugen in Form von Sulfid vorhanden ist, welches mittels Eisenoxydsalzes aufgelöst wird, das bei der Elektrolyse entsteht.In connection with the process of roasting and leaching copper sulphide ores and post-electrolytic precipitation of copper has been suggested to be roasted only partially, so that some of the copper after leaching in Form of sulfide is present, which is dissolved by means of iron oxide salt, which is at electrolysis occurs.

ίο Die vorliegende Erfindung hat nun zum Gegenstande eine verbesserte Arbeitsweise bei der Durchführung solcher Verfahren. Das in der üblichen Weise durchgeführte Rösten führt herbei, daß Klumpen oder Kerne gebildet werden, welche hauptsächlich aus Kupfersulfiden bestehen, und bei der nachträglich erfolgenden Auslaugung mit Eisenoxydsalzen ist es unmöglich, alle diese harten Kerne aufzulösen. Der Erfinder hat nunigefunden, daß ein kleiner Zusatz von Natriumsulfat zum Erz vor dem Rösten dazu wesentlich beiträgt, die Bildung solcher harten unlöslichen Kerne zu verhindern.The subject of the present invention is now an improved mode of operation the implementation of such procedures. The roasting carried out in the usual way causes lumps or cores to be formed, which mainly consist of copper sulfides, and subsequently leaching with iron oxide salts makes it impossible to dissolve all these hard nuclei. The inventor has now found that a small addition of sodium sulphate to the ore before roasting contributes significantly to the formation of such hard insolubles To prevent cores.

Ein Zusatz von 2 bis 5 Prozent genügt hierbei meistens. Die Erklärung für diese Wirkung des Natriumsulfats ist nach Ansicht des Erfinders darin zu suchen, daß sich das genannte Sulfat mit Kupfersulfat zu einer leicht schmelzbaren Verbindung vereinigt, die imstande ist, Sulfide zu lösen und deshalb in das Innere der Sulfidkerne hineindringt, so daß die Kerne porös oder schwammig werden, wenn die Auslaugeflüssigkeit zur Wirkung auf dieselben kommt. Es ist infolgedessen klar, daß das Natriumsulfat wiedergewonnen und wiederholt benutzt werden kann. Diese Erfindung ist bei eisenreichen Materialien ganz besonders wertvoll, so z. B. bei Extraktion von Kupfer aus Kiesabbrand, wo es erforderlich ist, eine möglichst vollständige Extraktion herbeizuführen, um das Material nach Auslaugung des Kupfers als ein Eisenerz disponibel zu haben.An addition of 2 to 5 percent is usually sufficient. The explanation for this According to the inventor, the effect of sodium sulphate is to be found in the fact that the called sulfate combined with copper sulfate to form an easily fusible compound, the is able to dissolve sulphides and therefore penetrates into the interior of the sulphide nuclei, see above that the cores become porous or spongy when the leaching liquid takes effect comes to the same. It is therefore clear that the sodium sulfate is recovered and can be used repeatedly. This invention is with iron rich materials especially valuable, so z. B. in the extraction of copper from gravel burnout, where necessary is to bring about as complete an extraction as possible to the material after Leaching of copper as an iron ore available.

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Behandlung von sulfidischen Kupfererzen durch teilweises Rösten, Auslaugen und Elektrolysieren, wo das im gerösteten Material enthaltene Kupfer jedenfalls teilweise in Form von Sulfid vorhanden ist, und wo das Sulfid mittels bei der elektrolytischen Ausscheidung des Kupfers gewonnener Eisenoxydsalze aufgelöst wird, dadurch gekennzeichnet, daß dem zu röstenden Material vor dem Rösten eine geringe Menge von Natriumsulfat zugefügt wird.Process for the treatment of sulphidic copper ores by partial roasting, Leaching and electrolyzing, where the copper contained in the roasted material is at least partly in the form of sulfide is present and where the sulfide means in the electrolytic precipitation of the Copper obtained iron oxide salts is dissolved, characterized in that the material to be roasted before roasting a small amount of sodium sulfate is added.
DENDAT275204D 1948-10-02 Expired DE275204C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP14388D DE860402C (en) 1948-10-02 1948-10-02 Injection or press molding machine

Publications (1)

Publication Number Publication Date
DE275204C true DE275204C (en) 1900-01-01

Family

ID=32825975

Family Applications (2)

Application Number Title Priority Date Filing Date
DENDAT275204D Expired DE275204C (en) 1948-10-02
DEP14388D Expired DE860402C (en) 1948-10-02 1948-10-02 Injection or press molding machine

Family Applications After (1)

Application Number Title Priority Date Filing Date
DEP14388D Expired DE860402C (en) 1948-10-02 1948-10-02 Injection or press molding machine

Country Status (4)

Country Link
BE (1) BE497388A (en)
DE (2) DE860402C (en)
FR (1) FR1070412A (en)
GB (1) GB683442A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1121775B (en) * 1952-08-28 1962-01-11 Renault Pressure chamber for a press casting machine for metals operated by piston pressure
DE1139240B (en) * 1957-09-06 1962-11-08 Tos Rakovnik Narodni Podnik Cold chamber die casting machine with vertically working, hydraulically operated pressure piston and opposed piston

Also Published As

Publication number Publication date
DE860402C (en) 1952-12-22
GB683442A (en) 1952-11-26
BE497388A (en) 1900-01-01
FR1070412A (en) 1954-07-26

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