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WO1995018870A1 - Appareil et procede de recuperation de metaux du groupe du platine - Google Patents

Appareil et procede de recuperation de metaux du groupe du platine Download PDF

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Publication number
WO1995018870A1
WO1995018870A1 PCT/FI1995/000008 FI9500008W WO9518870A1 WO 1995018870 A1 WO1995018870 A1 WO 1995018870A1 FI 9500008 W FI9500008 W FI 9500008W WO 9518870 A1 WO9518870 A1 WO 9518870A1
Authority
WO
WIPO (PCT)
Prior art keywords
medium
band
roller
cylinders
stabilizing
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.)
Ceased
Application number
PCT/FI1995/000008
Other languages
English (en)
Inventor
Petri Korhonen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO1995018870A1 publication Critical patent/WO1995018870A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
    • B09B3/35—Shredding, crushing or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • B01J37/0027—Powdering
    • B01J37/0036—Grinding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J38/00—Regeneration or reactivation of catalysts, in general
    • B01J38/72—Regeneration or reactivation of catalysts, in general including segregation of diverse particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/48—Washing granular, powdered or lumpy materials; Wet separating by mechanical classifiers
    • B03B5/56—Drum classifiers
    • 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
    • C22B11/00—Obtaining noble metals
    • C22B11/04—Obtaining noble metals 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
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/009—General processes for recovering metals or metallic compounds from spent catalysts
    • 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

Definitions

  • the invention relates to a method of recovering platinum metals and an apparatus therefor.
  • the emission of car exhaust gases has today to be restrict ⁇ ed, and catalysts are being used for this purpose.
  • the objective of the catalyst is to bind hydrocarbons, nitric oxides and carbon monoxide.
  • the basic structure of the catalyst comprises a carrier, a stabilizing medium and the catalyst metals. Precious metal particles Pt, Pd, Rh are attached to the carrier to provide the catalytic oxidation and reduction. The oxidation of the incombustible hydrocar- bons and the carbon monoxide and the reduction of the nitric oxides take place in the metal particles on the stabilizing medium surface.
  • the carrier medium of the catalyst is a ceramic or metallic monolith.
  • the ceramic carriers are impact sensitive having an equally sized reactive substance area than the metallic ones, wherefore more and more metal ⁇ lic carriers are today being used.
  • the metallic monoliths are produced of high-temperature resistant ferritic chromic aluminum steel.
  • the metal carrier is made of steel foil with a thickness of approx. 0,05 mm, which is corrugated and rolled.
  • the stabilizing medium is spread on the surface of the battery. The precious metals are absorbed into the stabilizing medium as aqueous solution and reduced by hydro ⁇ gen. The battery is thereafter placed into a metal case.
  • the size, amount and dimensions of the catalysts are chosen to suit the respective car and motor.
  • the recovery catalysts can therefore have the same differences.
  • the catalyst (catalyzer) is cut off, i.e. the catalyst is split in half and its interior is bagged. The interior with its dust is melted together with the iron to form slag, which then sinks to the bottom of the melting furnace.
  • This slag contains the platinum, palladium and rhodium of the catalysts.
  • the slag is enriched, and the precious metals are dissolved from the enriched iron slag.
  • the increased utilization of metal catalysts has created the need for the recovery of the precious metals contained therein.
  • One example of this development is a catalyst barrel which is sawn up along its edges.
  • the metal cartridge is detached by sawing off the nail heads holding the roll.
  • the cartridge roll is detached from its nails and the clinch nail at the end of the band is detached.
  • the roll is placed vertically in a pin rotating freely around its axle.
  • the roll is pulled open and the band/bands are steered through two scratch brushes or rollers, so that the stabilizing medium and the precious metals are detached. After this the stabilizing medium is pulverized and homogenized.
  • This method does not, however, provide a sufficient recovery of the precious metals.
  • the scratch brushes cannot recover precious metals from all angles of the corrugated sheet.
  • different substances from the brushes like e.g. base metals, are mixed into the monolith to be purified, which substances are difficult to separate in the continued treatment.
  • the objective of the invention is to provide an improvement of the above mentioned disadvantages.
  • the embodiment of this solution is characterized in what is presented in the claims.
  • One of the main advantages of the subject invention is an improved recovery of the precious metals.
  • the separation of the precious metals does not require heat-treatment or dissolving of the whole catalyst. Mechanical separation can be utilized to a high extent.
  • fig. 1 presents a cross-section of a metal catalyst
  • fig. 2 presents an enlargement of point A of fig. 1
  • fig. 3 presents the apparatus for recovery of precious metals from a catalyst.
  • Fig. 1 presents schematically a rolled metal catalyst, comprising consecutively a straight and corrugated thin band inside the case 1.
  • the spot indicated by an arrow in fig. 1 has been enlarged to show schematically the structure of the catalyst.
  • the corrugated or non-corrugated band 6, 7 com ⁇ prises the following layers, e.g. the carrier medium layer 2 (e.g. steel), having at least on one side a stabilizing medium layer 3 (e.g. Al 2 0 3 ) containing precious metal parti- cles 4.
  • the carrier medium layer 2 e.g. steel
  • stabilizing medium layer 3 e.g. Al 2 0 3
  • the roll 5 is opened by detaching possible fixing nails or pins.
  • One roll contains approx. 10 m of band.
  • the straight and corrugated bands are separated from each other and fed into two consecutive rollers.
  • Each roller is formed of cylinders 9, 10, 11, 12, coated e.g. favorably by steel shells, and rotating in opposite directions on parallel axles.
  • the cylinders 9, 10 of the first roller, in between which the band is first fed, have been arranged to rotate at a lower speed than the cylinders 11, 12 of the latter roll ⁇ er, and the surfaces of these cylinders can be notched for the adhesion of the band.
  • the axle of the one cylinder is e.g.
  • the gap of the roller can thus be adjusted to properly press and transport the band.
  • the band 6 or 7 is fed into the gap 13 of the first roller.
  • the band 1 is rolled between the roller cylin- ders 9, 10.
  • the head of the band has advanced through the first roller, it is between the rollers in the interme ⁇ diate space 14, and is there supported by the abutment 15, which at the same time steers the band 6, 7 to the gap 16 of the second roller.
  • the band proceeds to the second roller rotating faster than the first one, causing tension in the band by which it stretches and tears or breaks, and the carrier medium layer is detached by the stretching from the band surface.
  • the broken band pieces and the aluminum oxide are removed after the second roller or already in the inter ⁇ mediate space ends, which are open. It is also possible to provide the intermediate space with holes, through which part of the material can be recovered.
  • the second roller is favorably in a lower position than the first roller, to enable a better passage of the crushed products.
  • the rota ⁇ tion speed of the cylinders of the second roller is 1,5 - 2,5, favorably 1,7 - 2,3, and more favorably approx. 2 times faster than the cylinders of the first roller. Possible dust of the crushing is collected into a dust filter, which is occasionally washed to recover the precious metals.
  • the carrier medium, the stabilizing medium and the precious metal particles separated in the roller treatment are gath ⁇ ered together.
  • the carrier medium is separated from the stabilizing medium and the metal particles in the water wash and with proper sedimentation treatment and by rubbing the surfaces during the washing.
  • the carrier medium, stabilizing medium and the precious metals that passed the crushing phase are fed for the water wash to e.g. a drum 20, rotating in a closed water circula ⁇ tion.
  • the drum is a cylinder rotating around its longitudi ⁇ nal axis having ends 21, 22 with openings for the feeding and the discharge.
  • the interior surface of the drum which is not presented, has packing balks for the lifting of the material to be washed from the interior surface of the drum when the drum is rotating.
  • the carrier medium is steered to the sedimentation basin 24, on the bottom of which is collected the carrier medium pieces that pass through the grating, and from which the sludge is pumped to the settling basin 25, which intake gap 26 is closer to the bottom of the basin 25 than the upper part.
  • the sludge is let to pass as e.g. an overflow from the vessel back to the drum to enable the sedimentation.
  • the carrier medium is separated in this wash and remains inside the drum.
  • the sedimentation product acquired from the sludge at the bottom of the settling basin contains aluminum oxide and precious metals, which can be recovered in the basin 27, and thereaf ⁇ ter dried for post-treatment.
  • the band hardened in the roller treatment is dispersed into small pieces of the size of a finger nail. The recovery of precious metals with this method at this stage is almost 100%. Conventional dissolving processes are thereafter used for the separation of the precious metals.
  • a craftsman can naturally modify the sedimentation and settling phases and times as required without essentially affecting the invention.
  • Effective cyclones or corresponding can be used in the sedimentation and settling phases.
  • the band is stretched so that it breaks into pieces and so that the stretching detaches the catalyst metal.

Landscapes

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

Abstract

Procédé et dispositif de récupération de métaux du groupe du platine à partir d'un catalyseur métallique. Afin de séparer le substrat contenant le catalyseur métallique du support, les feuilles du bloc catalyseur sont déroulées. Les feuilles sont alors broyées en étant introduites dans la fente entre une paire de cylindres. L'invention se rapporte également à un procédé et un dispositif de séparation à l'état humide du support et du substrat après que la première séparation a été effectuée. Les particules du support et du substrat, contenant le catalyseur métallique, sont mises en contact de frottement. Les particules fines et grossières sont séparées. Les particules fines subissent un traitement supplémentaire permettant la récupération du catalyseur métallique.
PCT/FI1995/000008 1994-01-11 1995-01-11 Appareil et procede de recuperation de metaux du groupe du platine Ceased WO1995018870A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI940135A FI940135A7 (fi) 1994-01-11 1994-01-11 Platinametallin talteenottomenetelmä ja laite sitä varten
FI940135 1994-01-11

Publications (1)

Publication Number Publication Date
WO1995018870A1 true WO1995018870A1 (fr) 1995-07-13

Family

ID=8539398

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1995/000008 Ceased WO1995018870A1 (fr) 1994-01-11 1995-01-11 Appareil et procede de recuperation de metaux du groupe du platine

Country Status (2)

Country Link
FI (1) FI940135A7 (fr)
WO (1) WO1995018870A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD4131C1 (ro) * 2010-10-25 2012-05-31 Государственный Университет Молд0 Instalaţie pentru extragerea paladiului din catalizatorii auto uzaţi

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074865A (en) * 1973-09-11 1978-02-21 Johnson, Matthey & Co., Limited Method of recovering platinum group metal values from a used washcoated catalyst
GB2067599A (en) * 1979-12-31 1981-07-30 Johnson Matthey Co Ltd Recovery of Pt group metals
DE3223689C1 (de) * 1982-06-25 1983-09-29 Günther 5628 Heiligenhaus Unger Verfahren und Vorrichtung zur Gewinnung von Metallteilen aus Verbrennungs- und/oder Pyrolyse-Rückständen, insbesondere aus der Müllverbrennung
JPH01189347A (ja) * 1988-01-21 1989-07-28 Cataler Kogyo Kk 自動車排気ガス用触媒からの白金族金属回収方法
DE3844214C1 (en) * 1988-12-29 1990-06-07 Heinrich Ing.(Grad.) 4600 Dortmund De Molde Process for the recovery of rare metals from catalysts
DE4105224C1 (en) * 1991-02-20 1992-02-27 H.J.S. Fahrzeugteile-Fabrik Gmbh & Co, 5750 Menden, De Recovery of precious metal(s) from catalyst - comprises coating ceramic oxide on metal foil which is detachable
DE4122717A1 (de) * 1991-07-09 1993-01-21 Ear Gmbh Verfahren und vorrichtung zur aufbereitung von metalltraeger-katalysatoren

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074865A (en) * 1973-09-11 1978-02-21 Johnson, Matthey & Co., Limited Method of recovering platinum group metal values from a used washcoated catalyst
GB2067599A (en) * 1979-12-31 1981-07-30 Johnson Matthey Co Ltd Recovery of Pt group metals
DE3223689C1 (de) * 1982-06-25 1983-09-29 Günther 5628 Heiligenhaus Unger Verfahren und Vorrichtung zur Gewinnung von Metallteilen aus Verbrennungs- und/oder Pyrolyse-Rückständen, insbesondere aus der Müllverbrennung
JPH01189347A (ja) * 1988-01-21 1989-07-28 Cataler Kogyo Kk 自動車排気ガス用触媒からの白金族金属回収方法
DE3844214C1 (en) * 1988-12-29 1990-06-07 Heinrich Ing.(Grad.) 4600 Dortmund De Molde Process for the recovery of rare metals from catalysts
DE4105224C1 (en) * 1991-02-20 1992-02-27 H.J.S. Fahrzeugteile-Fabrik Gmbh & Co, 5750 Menden, De Recovery of precious metal(s) from catalyst - comprises coating ceramic oxide on metal foil which is detachable
DE4122717A1 (de) * 1991-07-09 1993-01-21 Ear Gmbh Verfahren und vorrichtung zur aufbereitung von metalltraeger-katalysatoren
US5279464A (en) * 1991-07-09 1994-01-18 Ear European Autocat Recycling Gmbh Method of and apparatus for recycling catalytic converters

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Vol. 87, No. 309487, C87-131734; & JP,A,62 216 924 (NISSAN ENG KK), 24 September 1987. *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD4131C1 (ro) * 2010-10-25 2012-05-31 Государственный Университет Молд0 Instalaţie pentru extragerea paladiului din catalizatorii auto uzaţi

Also Published As

Publication number Publication date
FI940135L (fi) 1995-07-12
FI940135A0 (fi) 1994-01-11
FI940135A7 (fi) 1995-07-12

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