US2183517A - Treatment of materials containing tantalum and niobium - Google Patents

Treatment of materials containing tantalum and niobium Download PDF

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Publication number
US2183517A
US2183517A US187245A US18724538A US2183517A US 2183517 A US2183517 A US 2183517A US 187245 A US187245 A US 187245A US 18724538 A US18724538 A US 18724538A US 2183517 A US2183517 A US 2183517A
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Prior art keywords
niobium
treatment
materials containing
containing tantalum
metals
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Expired - Lifetime
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US187245A
Inventor
Leemans Joseph Pierre
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Societe Generale Metallurgique de Hoboken SA
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Societe Generale Metallurgique de Hoboken SA
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Priority to US266536A priority Critical patent/US2198914A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • C22B34/00—Obtaining refractory metals
    • C22B34/20—Obtaining niobium, tantalum or vanadium
    • C22B34/24—Obtaining niobium or tantalum

Definitions

  • This invention relates to an improved process for the recovery of tantalum and/or niobium from their ores, or from metallurgical by-products such as those in which the said elements 5 may be found in the form of oxide compounds free or combined.
  • This invention has for its object the recovery by an economical process of tantalum and/or niobium in the form of metals or of alloys.
  • the primary material is subjected to a selective reduction in the presence of one or several of the following reducing elements: Ca, Al, Si, Mg, alloyed or combined with one or more metals as character- 16 ized below, so as to obtain a product (alloy for instance) in which the ratio NbzTa is higher than that of the primary material.
  • the metals which are added to the reducing agents are such metals whose alloying or com- 20 bination reaction with the aforesaid reducing agents develops heat so that the metallo-thermic power of a given quantity of these reducing elements is smaller in the obtained alloy or combination than in the same quantity in the elemen- 25 tary state.
  • the primary material containing tantalum and niobium may be subjected inside a suitable an metallurgical apparatus, such as arr-electric furnace, to a selective reduction in the presence of one or more oi the elements Si, Ca, Al, Mg, the thermic capacity of which has been diminished by alloying or combining them to other metals
  • a suitable an metallurgical apparatus such as arr-electric furnace
  • the amount of reducing agent may be so calculated that the major part of the Nb contained in the primary material'is reduced and passes into an alloy in which the ratio Nb:Ta is higher than that of the primary 0 material.
  • alloy are the metal or metals used for lowering the thermic capacity of the reducing agent.
  • an alloy is obtained in which the ratio Nb'z'Ia is higher than that of the primary material, and also a slag is obtained in which the ratio NbzTa is higher than that of the primary material.
  • Theslag may be treated by any suitable known process with a view to recovering the tantalum and niobium.
  • a process for the treatment of primary materials containing tantalum and niobium com prising a reduction of the primary material by means-of at least one of the metals Al, Ca, Mg alloyed with at least one of metals whose alloying reaction with the aforesaid reducing elements develops heat so that the metallic-thermic power of a given quantity of the said reducing elements is smaller in the obtained alloy than in the same quantity in the elementary state, thereby selectively reducing the niobium relatively to thetantalum and obtaining an alloy in which the ratio v niobium:tantalum is higher than in the primary material, and a slag in which the ratio tantai

Description

85 such 'as Ni, Co, Fe.
Patented it 12, rate TREATMENT on ivm'raaiaas coNTama TANTALUM area 1 Joseph Pierre Leemans, Hoboken, near Antwerp, Belgium, assignmto Socit Gnrale Metal lurgique dc Hobokem-Hoboken, near Antwr Belgium, a limited company of lgi No Dra. Application January 27,19
. rial No. 187,25. n
aciaims.
This invention relates to an improved process for the recovery of tantalum and/or niobium from their ores, or from metallurgical by-products such as those in which the said elements 5 may be found in the form of oxide compounds free or combined.
This invention has for its object the recovery by an economical process of tantalum and/or niobium in the form of metals or of alloys.
According to the invention, the primary material is subjected to a selective reduction in the presence of one or several of the following reducing elements: Ca, Al, Si, Mg, alloyed or combined with one or more metals as character- 16 ized below, so as to obtain a product (alloy for instance) in which the ratio NbzTa is higher than that of the primary material.
The metals which are added to the reducing agents are such metals whose alloying or com- 20 bination reaction with the aforesaid reducing agents develops heat so that the metallo-thermic power of a given quantity of these reducing elements is smaller in the obtained alloy or combination than in the same quantity in the elemen- 25 tary state. Among these metals, nickel, cobalt,
' iron, are more particularly contemplated.
For carrying this feature of the invention into efiect, the primary material containing tantalum and niobium may be subjected inside a suitable an metallurgical apparatus, such as arr-electric furnace, to a selective reduction in the presence of one or more oi the elements Si, Ca, Al, Mg, the thermic capacity of which has been diminished by alloying or combining them to other metals The amount of reducing agent may be so calculated that the major part of the Nb contained in the primary material'is reduced and passes into an alloy in which the ratio Nb:Ta is higher than that of the primary 0 material. The other component elements of the Great Brit 5.:
alloy are the metal or metals used for lowering the thermic capacity of the reducing agent.
By the process according to the pretent invention, an alloy is obtained in which the ratio Nb'z'Ia is higher than that of the primary material, and also a slag is obtained in which the ratio NbzTa is higher than that of the primary material. Theslag may be treated by any suitable known process with a view to recovering the tantalum and niobium.
I claim:
1. A process for the treatment of primary materials containing tantalum and niobium, com prising a reduction of the primary material by means-of at least one of the metals Al, Ca, Mg alloyed with at least one of metals whose alloying reaction with the aforesaid reducing elements develops heat so that the metallic-thermic power of a given quantity of the said reducing elements is smaller in the obtained alloy than in the same quantity in the elementary state, thereby selectively reducing the niobium relatively to thetantalum and obtaining an alloy in which the ratio v niobium:tantalum is higher than in the primary material, and a slag in which the ratio tantai
US187245A 1937-03-19 1938-01-27 Treatment of materials containing tantalum and niobium Expired - Lifetime US2183517A (en)

Priority Applications (1)

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US266536A US2198914A (en) 1938-01-27 1939-04-07 Treatment of materials containing tantalum and niobium

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GB2183517X 1937-03-19

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US2183517A true US2183517A (en) 1939-12-12

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516863A (en) * 1946-07-15 1950-08-01 Gardner Daniel Process of producing tantalum, columbium, and compounds thereof
US2905548A (en) * 1957-09-06 1959-09-22 Fansteel Metallurgical Corp Method of recovering tantalum and columbium
US2905549A (en) * 1957-10-14 1959-09-22 Fansteel Metallurgical Corp Method of recovering refractory metals
US2905550A (en) * 1957-10-14 1959-09-22 Fansteel Metallurgical Corp Recovery of refractory metals
US2992095A (en) * 1958-01-17 1961-07-11 Wah Chang Corp Process of separating niobium and tantalum values in oxidic ores and of producing pure niobium
US3132024A (en) * 1960-10-10 1964-05-05 Union Carbide Corp Upgrading of oxidic columbiumtantalum materials
US6322912B1 (en) 1998-09-16 2001-11-27 Cabot Corporation Electrolytic capacitor anode of valve metal oxide
US6373685B1 (en) 1998-09-16 2002-04-16 Cabot Corporation Methods to partially reduce a niobium metal oxide and oxygen reduced niobium oxides
US6391275B1 (en) 1998-09-16 2002-05-21 Cabot Corporation Methods to partially reduce a niobium metal oxide and oxygen reduced niobium oxides
US6462934B2 (en) 1998-09-16 2002-10-08 Cabot Corporation Methods to partially reduce a niobium metal oxide and oxygen reduced niobium oxides
US6576099B2 (en) 2000-03-23 2003-06-10 Cabot Corporation Oxygen reduced niobium oxides
US6639787B2 (en) 2000-11-06 2003-10-28 Cabot Corporation Modified oxygen reduced valve metal oxides
US20040226630A1 (en) * 2003-05-16 2004-11-18 Koenitzer John W. Controlled oxygen addition for metal material
US20050008564A1 (en) * 2003-02-26 2005-01-13 Reed David M. Phase formation of oxygen reduced valve metal oxides and granulation methods
US20050025699A1 (en) * 2003-05-19 2005-02-03 Reed David M. Methods of making a niobium metal oxide and oxygen reduced niobium oxides

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516863A (en) * 1946-07-15 1950-08-01 Gardner Daniel Process of producing tantalum, columbium, and compounds thereof
US2905548A (en) * 1957-09-06 1959-09-22 Fansteel Metallurgical Corp Method of recovering tantalum and columbium
US2905549A (en) * 1957-10-14 1959-09-22 Fansteel Metallurgical Corp Method of recovering refractory metals
US2905550A (en) * 1957-10-14 1959-09-22 Fansteel Metallurgical Corp Recovery of refractory metals
US2992095A (en) * 1958-01-17 1961-07-11 Wah Chang Corp Process of separating niobium and tantalum values in oxidic ores and of producing pure niobium
US3132024A (en) * 1960-10-10 1964-05-05 Union Carbide Corp Upgrading of oxidic columbiumtantalum materials
US20050084445A1 (en) * 1998-09-16 2005-04-21 Kimmel Jonathon L. Methods to partially reduce a niobium metal oxide and oxygen reduced niobium oxides
US6322912B1 (en) 1998-09-16 2001-11-27 Cabot Corporation Electrolytic capacitor anode of valve metal oxide
US6391275B1 (en) 1998-09-16 2002-05-21 Cabot Corporation Methods to partially reduce a niobium metal oxide and oxygen reduced niobium oxides
US6416730B1 (en) 1998-09-16 2002-07-09 Cabot Corporation Methods to partially reduce a niobium metal oxide oxygen reduced niobium oxides
US6462934B2 (en) 1998-09-16 2002-10-08 Cabot Corporation Methods to partially reduce a niobium metal oxide and oxygen reduced niobium oxides
US6527937B2 (en) 1998-09-16 2003-03-04 Cabot Corporation Method of making a capacitor anode of a pellet of niobium oxide
US6373685B1 (en) 1998-09-16 2002-04-16 Cabot Corporation Methods to partially reduce a niobium metal oxide and oxygen reduced niobium oxides
US6592740B2 (en) 1998-09-16 2003-07-15 Cabot Corporation Methods to make capacitors containing a partially reduced niobium metal oxide
US7445762B2 (en) 1998-09-16 2008-11-04 Cabot Corporation Method to partially reduce calcined niobium metal oxide and oxygen reduced niobium oxides
US20040033183A1 (en) * 1998-09-16 2004-02-19 Fife James A. Methods to partially reduce a niobium metal oxide and oxygen reduced niobium oxides
US7241436B2 (en) 1998-09-16 2007-07-10 Cabot Corporation Methods to partially reduce certain metal oxides and oxygen reduced metal oxides
US6759026B2 (en) 1998-09-16 2004-07-06 Cabot Corporation Methods to partially reduce a niobium metal oxide and oxygen reduced niobium oxides
US6576099B2 (en) 2000-03-23 2003-06-10 Cabot Corporation Oxygen reduced niobium oxides
US7220397B2 (en) 2000-11-06 2007-05-22 Cabot Corporation Modified oxygen reduced valve metal oxides
US20040040415A1 (en) * 2000-11-06 2004-03-04 Kimmel Jonathon L. Modified oxygen reduced valve metal oxides
US6639787B2 (en) 2000-11-06 2003-10-28 Cabot Corporation Modified oxygen reduced valve metal oxides
US20050008564A1 (en) * 2003-02-26 2005-01-13 Reed David M. Phase formation of oxygen reduced valve metal oxides and granulation methods
US7655214B2 (en) 2003-02-26 2010-02-02 Cabot Corporation Phase formation of oxygen reduced valve metal oxides and granulation methods
US20040226630A1 (en) * 2003-05-16 2004-11-18 Koenitzer John W. Controlled oxygen addition for metal material
US7445679B2 (en) 2003-05-16 2008-11-04 Cabot Corporation Controlled oxygen addition for metal material
US20050025699A1 (en) * 2003-05-19 2005-02-03 Reed David M. Methods of making a niobium metal oxide and oxygen reduced niobium oxides
US7515397B2 (en) 2003-05-19 2009-04-07 Cabot Corporation Methods of making a niobium metal oxide and oxygen reduced niobium oxides
US20090244813A1 (en) * 2003-05-19 2009-10-01 Cabot Corporation Methods Of Making A Niobium Metal Oxide and Oxygen Reduced Niobium Oxides
US8110172B2 (en) 2003-05-19 2012-02-07 Cabot Corporation Methods of making a niobium metal oxide and oxygen reduced niobium oxides

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