GB582921A - Process for separation and recovery of hard constituents from sintered hard metals - Google Patents

Process for separation and recovery of hard constituents from sintered hard metals

Info

Publication number
GB582921A
GB582921A GB1906344A GB1906344A GB582921A GB 582921 A GB582921 A GB 582921A GB 1906344 A GB1906344 A GB 1906344A GB 1906344 A GB1906344 A GB 1906344A GB 582921 A GB582921 A GB 582921A
Authority
GB
United Kingdom
Prior art keywords
per cent
hard
alloy
cobalt
zinc
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
GB1906344A
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.)
POWDERLOYS Ltd
Original Assignee
POWDERLOYS Ltd
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 POWDERLOYS Ltd filed Critical POWDERLOYS Ltd
Priority to GB1906344A priority Critical patent/GB582921A/en
Publication of GB582921A publication Critical patent/GB582921A/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
    • C22C—ALLOYS
    • C22C3/00—Removing material from alloys to produce alloys of different constitution separation of the constituents of alloys

Landscapes

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

Abstract

A process of recovering hard metal carbides from scrap material comprising hard metal carbides and an auxiliary metal, generally cobalt or nickel, in which the coarsely crushed scrap material is fused with zinc to form an alloy of zinc and the auxiliary metal, and the alloy is removed by dissolving in dilute acid, the solid residue being washed to leave the hard carbide particles. Sufficient zinc should be used to form, with the auxiliary metal, an alloy containing not more than 10 per cent. of cobalt or nickel. Preferably dilute sulphuric acid is used as the solvent, a suitable concentration being 20 per cent. of acid to 80 per cent. of water by weight. The recovery of tungsten carbide from a composition consisting of tungsten carbide and 12 per cent. cobalt is referred to.ALSO:A process of recovering hard metal carbides from scrap material comprising hard metal carbides and an auxiliary metal, generally cobalt or nickel, in which process coarsely crushed scrap material is fused with zinc to form an alloy of zinc and the auxiliary metal, and the alloy is removed by dissolving in dilute acid, the solid residue being washed to leave the hard carbide particles. Sufficient zinc should be used to form, with the auxiliary metal, an alloy containing not more than 10 per cent. of cobalt or nickel. Preferably dilute sulphuric acid is used to dissolve the alloy, a suitable concentration of acid being 20 per cent. of acid to 80 per cent. of water by weight. The recovery of tungsten carbide from a composition consisting of tungsten carbide and 12 per cent. of cobalt is referred to.
GB1906344A 1944-10-04 1944-10-04 Process for separation and recovery of hard constituents from sintered hard metals Expired GB582921A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1906344A GB582921A (en) 1944-10-04 1944-10-04 Process for separation and recovery of hard constituents from sintered hard metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1906344A GB582921A (en) 1944-10-04 1944-10-04 Process for separation and recovery of hard constituents from sintered hard metals

Publications (1)

Publication Number Publication Date
GB582921A true GB582921A (en) 1946-12-02

Family

ID=10123148

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1906344A Expired GB582921A (en) 1944-10-04 1944-10-04 Process for separation and recovery of hard constituents from sintered hard metals

Country Status (1)

Country Link
GB (1) GB582921A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3595484A (en) * 1969-02-28 1971-07-27 Paul G Barnard Reclamation of refractory carbides from carbide materials
US4406866A (en) * 1982-09-20 1983-09-27 Gte Products Corporation Recovery of refractory metal values from scrap cemented carbide
DE112014005310B4 (en) 2013-11-21 2022-11-24 Kennametal Inc. Process for the preparation of tungsten carbide compositions

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3595484A (en) * 1969-02-28 1971-07-27 Paul G Barnard Reclamation of refractory carbides from carbide materials
US4406866A (en) * 1982-09-20 1983-09-27 Gte Products Corporation Recovery of refractory metal values from scrap cemented carbide
DE112014005310B4 (en) 2013-11-21 2022-11-24 Kennametal Inc. Process for the preparation of tungsten carbide compositions

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