DE596476C - Process for separating the layer formed during the removal of contaminants from lead, tin or alloys of these metals using aluminum from the adhering metals - Google Patents

Process for separating the layer formed during the removal of contaminants from lead, tin or alloys of these metals using aluminum from the adhering metals

Info

Publication number
DE596476C
DE596476C DEN34329D DEN0034329D DE596476C DE 596476 C DE596476 C DE 596476C DE N34329 D DEN34329 D DE N34329D DE N0034329 D DEN0034329 D DE N0034329D DE 596476 C DE596476 C DE 596476C
Authority
DE
Germany
Prior art keywords
metals
aluminum
tin
lead
separating
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
DEN34329D
Other languages
German (de)
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.)
NAT LEAD CO
NL Industries Inc
Original Assignee
NAT LEAD CO
NL Industries Inc
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 NAT LEAD CO, NL Industries Inc filed Critical NAT LEAD CO
Priority to DEN34329D priority Critical patent/DE596476C/en
Application granted granted Critical
Publication of DE596476C publication Critical patent/DE596476C/en
Expired legal-status Critical Current

Links

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
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

Verfahren zur Trennung der bei der Entfernung von Verunreinigungen aus Blei, Zinn oder Legierungen dieser Metalle mittels Aluminium gebildeten Schicht von den anhaftenden Metallen Die Erfindung betrifft ein Verfahren, um aus Blei und Zinn oder Blei- oder Zinnlegierungen gewisse darin enthaltene Metalle zu entfernen, die als Verunreinigungen angesehen werden, beispielsweise Antimon, Kupfer, Arsen und Eisen. Es ist bekannt, Aluminium für diesen Zweck zu verwenden, gemäß dem das zu reinigende Metall geschmolzen und auf eine Temperatur von 6oo° oder 62o° C gebracht wird; wobei Aluminium vorzugsweise im festem Zustande zugesetzt, geschmolzen und heftig darin umgerührt wird. Beim Abkühlen der Schmelze auf etwa roo° C bildet sich auf dem Metallbade eine breiige Schicht, die alle Verunreinigungen am Aluminium gebunden enthält. Eine reine und vollständige Trennung der Schicht von dem anhaftenden Metall wird gemäß der Erfindung durchgeführt, indem man in die Schicht einen kohlenstoffhaltigen Stoff, beispielsweise Kohle oder Kohlenstoff, vorzugsweise jedoch Holzsägespäne oder ähnliche pflanzliche Stoffe, zusetzt oder hineinrührt. Wenn der kohlenstoffhaltige Stoff in die Schicht eingerührt wird, während sie auf dem Metallbade schwimmt, so tropft das frei gemachte daran haftende Metall in das Bad zurück: In diesem Falle kann das trockene Pulver von dem Metallbade abgeschöpft oder abgekehrt werden, nachdem es sich abgekühlt hat und erstarrt ist. Oder der kohlenstoffhsltige Stoff kann in die Schicht eingerührt werden, nachdem sie von dem Metallbade z. B. durch Schröpfen oder Filtern entfernt worden ist. Die zur Erreichung des Ergebnisses notwendige Kohlenstoffmenge ist nicht erheblich und beträgt gewöhnlich ein Zehntel bis ein Viertel der zur Erzeugung der Schicht verwendeten Aluminiummenge.Process for separating in the removal of impurities layer formed from lead, tin or alloys of these metals by means of aluminum of the adhering metals The invention relates to a method to cut from lead and Tin or lead or tin alloys to remove certain metals contained therein, which are considered to be impurities, for example antimony, copper, arsenic and iron. It is known to use aluminum for this purpose, according to which the Metal to be cleaned melted and brought to a temperature of 600 ° or 62o ° C will; where aluminum is preferably added in the solid state, melted and violently stirred in it. When the melt cools down to around roo ° C, it forms on the metal bath a mushy layer that removes all impurities on the aluminum contains bound. A pure and complete separation of the layer from the adherent Metal is carried out according to the invention by adding a carbon-containing layer to the layer Substance, for example coal or carbon, but preferably wood sawdust or similar herbal substances, adds or stirs into it. If the carbonaceous Fabric is stirred into the layer while it floats on the metal bath, so the exposed metal adhering to it drips back into the bath: In this case the dry powder can be skimmed off or swept away from the metal bath afterwards it has cooled down and frozen. Or the carbonaceous substance can be in the layer can be stirred in after it has been removed from the metal bath, for. B. by cupping or filter has been removed. The one necessary to achieve the result The amount of carbon is insignificant and is usually one tenth to one Quarter of the amount of aluminum used to create the layer.

Die trockene Schicht ist ein dunkelgraues Pulver von feinem Gefüge. Es entzündet sich leicht. Mit Wasser angefeuchtet, erzeugt es Wasserstoff, der sich bei genügend hoher Temperatur entzündet. Die Zusammensetzung des Pulvers ist im allgemeinen 5o °/o Antimon, 35 % Zinn, 13 °/o Aluminium und Kohlenstoff, der aus der Benutzung von Holzsägespänen herrührt. Zur Rückgewinnung der in ihm, enthaltenen Metalle wird das Pulver z. B. in einem Flammofen mit den Oxyden oder Sulfiden erhitzt, und zwar vorzugsweise derjenigen Metalle, die die Schicht enthält, außer Aluminium. Bei der Reaktion entsteht eine Aluminiumschlacke.The dry layer is a dark gray powder with a fine structure. It ignites easily. Moistened with water, it generates hydrogen, which ignites at a sufficiently high temperature. The composition of the powder is generally 50 % antimony, 35% tin, 13% aluminum and carbon derived from the use of wood sawdust. To recover the metals contained in it, the powder is z. B. heated in a flame furnace with the oxides or sulfides, preferably those metals which the layer contains, except aluminum. The reaction produces an aluminum slag.

ee

Claims (2)

PATENTANSPRÜCHE: r. Verfahren zur Trennung der bei der Entfernung von Verunreinigungen, wie Arsen, Antimon, Kupfer, Eisen, aus Zinn, Blei oder Zinn-Blei-Legierungen mittels Aluminium gebildeten breiigen Schicht von dem anhaftenden Metall, dadurch gekennzeichnet, daß der Schicht ein kohlenstoffhaltiger Stoff, z. B. Sägespäne, vorzugsweise durch Einrühren zugefügt wird. PATENT CLAIMS: r. Process for separating the pulpy layer formed in the removal of impurities such as arsenic, antimony, copper, iron, tin, lead or tin-lead alloys by means of aluminum from the adhering metal, characterized in that the layer is a carbonaceous substance, e.g. . B. sawdust, is preferably added by stirring in. 2. Aufarbeitung der. von dem anhaftenden Metall nach Anspruch i getrennten und zu feinem Pulver getrockneten Schicht durch Erhitzen z. B. in einem Flammofen mit Oxyden oder Sulfiden vorzugsweise derjenigen Metalle, die in dem Pulver enthalten sind, außer Aluminium.2. Work-up the. powder separated from the adhering metal according to claim i and into fine powder dried layer by heating e.g. B. in a flame furnace with oxides or sulfides preferably those metals which are contained in the powder, except aluminum.
DEN34329D 1932-10-20 1932-10-20 Process for separating the layer formed during the removal of contaminants from lead, tin or alloys of these metals using aluminum from the adhering metals Expired DE596476C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEN34329D DE596476C (en) 1932-10-20 1932-10-20 Process for separating the layer formed during the removal of contaminants from lead, tin or alloys of these metals using aluminum from the adhering metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN34329D DE596476C (en) 1932-10-20 1932-10-20 Process for separating the layer formed during the removal of contaminants from lead, tin or alloys of these metals using aluminum from the adhering metals

Publications (1)

Publication Number Publication Date
DE596476C true DE596476C (en) 1934-05-09

Family

ID=7346736

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN34329D Expired DE596476C (en) 1932-10-20 1932-10-20 Process for separating the layer formed during the removal of contaminants from lead, tin or alloys of these metals using aluminum from the adhering metals

Country Status (1)

Country Link
DE (1) DE596476C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE963817C (en) * 1951-05-16 1957-05-16 Vaw Ver Aluminium Werke Ag Process for cleaning molten metal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE963817C (en) * 1951-05-16 1957-05-16 Vaw Ver Aluminium Werke Ag Process for cleaning molten metal

Similar Documents

Publication Publication Date Title
DE2720808A1 (en) PROCESS FOR SEPARATING COPPER SULFIDE FROM METALLIC LEAD IN A SLICK
DE2706175A1 (en) METHOD FOR COMBINING THE METAL PHASE IN THE MELTING AND CLEANING OF SILICON
DE596476C (en) Process for separating the layer formed during the removal of contaminants from lead, tin or alloys of these metals using aluminum from the adhering metals
DE2529230A1 (en) PROCESS FOR PRODUCING SILICIDES OF REACTIVE METALS
DD127945B1 (en) PROCESS FOR PROCESSING COOL SCRAP
DE680520C (en) Process for the removal of arsenic from Huettenmaennischen intermediate and waste products
DE651529C (en) Process for the extraction of zinc
US1808594A (en) Process for separating platinum from the other precious metals
DE685623C (en) Process for decoppering copper-containing pig iron and copper-containing iron scrap
EP0406929B1 (en) Process for removing thallium from lead
DE546028C (en) Process for the extraction of tin
DE456703C (en) Modification of the process for the extraction of antimony
AT101002B (en) Process for the treatment of metal-containing materials.
DE726524C (en) Process for the extraction of metals from the oxide-containing waste obtained when remelting font metal and similar antimony-containing lead and / or tin-rich alloys
DE321525C (en) Process for removing copper from copper-coated iron and other metals
DE635387C (en) Process for the production of compact magnesium
US1609967A (en) Process of refining tin
DE122663C (en)
AT107834B (en) Process for the production of highly refractory oxides.
US1957852A (en) Refining white metal scrap
AT130209B (en) Process for the electrothermal production of metallic magnesium.
DE431984C (en) Extraction of antimony from its alloys with other metals
US2116891A (en) Process for the production of solder and terne metals
DE98279C (en)
DE514726C (en) Clarifiers for lettering metal alloys and processes for their production