GB1439227A – Separation and purification of iridium
– Google Patents
GB1439227A – Separation and purification of iridium
– Google Patents
Separation and purification of iridium
Info
Publication number
GB1439227A
GB1439227A
GB3593873A
GB3593873A
GB1439227A
GB 1439227 A
GB1439227 A
GB 1439227A
GB 3593873 A
GB3593873 A
GB 3593873A
GB 3593873 A
GB3593873 A
GB 3593873A
GB 1439227 A
GB1439227 A
GB 1439227A
Authority
GB
United Kingdom
Prior art keywords
iridium
stage
platinum
hydroxide
precipitating
Prior art date
1972-08-10
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
GB3593873A
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.)
DEV CO Pty Ltd
SWARSAB MINING EXPLORATION
Original Assignee
DEV CO Pty Ltd
SWARSAB MINING EXPLORATION
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.)
1972-08-10
Filing date
1973-07-27
Publication date
1976-06-16
1973-07-27
Application filed by DEV CO Pty Ltd, SWARSAB MINING EXPLORATION
filed
Critical
DEV CO Pty Ltd
1976-06-16
Publication of GB1439227A
publication
Critical
patent/GB1439227A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
C22B11/00—Obtaining noble metals
C22B11/04—Obtaining noble metals by wet processes
Abstract
1439227 Separation of iridium values SWARSAB MINING EXPLORATION & DEVELOPMENT CO (PTY) Ltd 27 July 1973 [10 Aug 1972] 35938/73 Heading C1A Iridium values are separated from platinum and optionally other platinum group metals and gold by converting to their lower oxidation states by treating with hydrogen peroxide in acid medium at a temperature above room temperature, adjusting the pH to 9 (stage 22) so that Au, Pd, Rh and Ru are precipitated, the iridium and platinum remaining in solution are then oxidized by sodium bromate in acid medium (stage 23) at a temperature above room temperature and the pH adjusted to 6À5-7À5 precipitating iridium hydroxide and leaving the platinum in solution. The iridium containing precipitate may be purified by dissolving in 50% hydrochloric acid, boiling, oxidizing with hydrogen peroxide (stage 25), adjusting to pH 9 with sodium hydroxide, filtering and precipitating iridium hydroxide by using formic acid. This may be ignited at 1000 C. (stage 28) and cooled in nitrogen giving metallic iridium. The original material may be the residue from an aqua regia leach performed on a mixture of platinum group metals and gold, e.g. a matte. The bulk of the rhodium may be removed before the peroxide treatment.
GB3593873A
1972-08-10
1973-07-27
Separation and purification of iridium
Expired
GB1439227A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
ZA725498A
ZA725498B
(en)
1972-08-10
1972-08-10
Improvements in or relating to the separation and purification of iridium
Publications (1)
Publication Number
Publication Date
GB1439227A
true
GB1439227A
(en)
1976-06-16
Family
ID=25565247
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB3593873A
Expired
GB1439227A
(en)
1972-08-10
1973-07-27
Separation and purification of iridium
Country Status (11)
Country
Link
US
(1)
US3876747A
(en)
JP
(1)
JPS5343133B2
(en)
AU
(1)
AU452151B2
(en)
BE
(1)
BE803392A
(en)
CA
(1)
CA997153A
(en)
FI
(1)
FI58162C
(en)
FR
(1)
FR2195693B1
(en)
GB
(1)
GB1439227A
(en)
IT
(1)
IT993720B
(en)
NO
(1)
NO134877C
(en)
ZA
(1)
ZA725498B
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
RU2562180C1
(en)
*
2014-05-12
2015-09-10
Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования «Национальный исследовательский Томский политехнический университет»
Method of recycling pyrite cinders
Families Citing this family (11)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2251364B1
(en)
*
1973-11-19
1976-10-01
Rhone Progil
GB1517270A
(en)
*
1974-06-12
1978-07-12
Johnson Matthey Co Ltd
Recovery of precious metals from exhaust catalysts
US4329321A
(en)
*
1980-10-10
1982-05-11
Air Products And Chemicals, Inc.
Method for the recovery of salts of group VIII noble metals from solutions
US4406693A
(en)
*
1982-08-31
1983-09-27
Bahman Heshmatpour
Method for refining contaminated iridium
US4579721A
(en)
*
1984-08-03
1986-04-01
Getty Oil Company
Process for recovering metals from waste
DE3711650A1
(en)
*
1987-04-07
1988-10-27
Norddeutsche Affinerie
METHOD FOR PRODUCING NON-FERROUS METAL POWDER OR NON-METAL POWDER MIXTURES
JPH03166324A
(en)
*
1989-11-24
1991-07-18
Tanaka Kikinzoku Kogyo Kk
Recovering method for platinum
US5491247A
(en)
*
1994-11-14
1996-02-13
Elf Atochem North America, Inc.
Preparation of a precious metal salt of a nonoxidizing acid by direct reaction
JP3741117B2
(en)
*
2003-09-26
2006-02-01
住友金属鉱山株式会社
Mutual separation of platinum group elements
CN114293022B
(en)
*
2021-12-28
2023-09-15
英特派铂业股份有限公司
Platinum iridium alloy separation method
CN114506881B
(en)
*
2022-03-18
2023-03-31
昆明理工大学
Preparation method of iridium tetraiodide
Family Cites Families (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2714555A
(en)
*
1954-08-23
1955-08-02
Peter C Stevenson
Method of separating certain platinum group metals with cation exchange resins
US3024084A
(en)
*
1958-12-24
1962-03-06
Int Nickel Co
Separation of platinum from other metals
1972
1972-08-10
ZA
ZA725498A
patent/ZA725498B/en
unknown
1973
1973-07-27
FI
FI2371/73A
patent/FI58162C/en
active
1973-07-27
GB
GB3593873A
patent/GB1439227A/en
not_active
Expired
1973-07-31
CA
CA177,707A
patent/CA997153A/en
not_active
Expired
1973-08-02
US
US384824A
patent/US3876747A/en
not_active
Expired – Lifetime
1973-08-02
AU
AU58809/73A
patent/AU452151B2/en
not_active
Expired
1973-08-07
NO
NO733141A
patent/NO134877C/no
unknown
1973-08-09
IT
IT27711/73A
patent/IT993720B/en
active
1973-08-09
BE
BE134384A
patent/BE803392A/en
unknown
1973-08-10
FR
FR7329344A
patent/FR2195693B1/fr
not_active
Expired
1973-08-10
JP
JP7389377A
patent/JPS5343133B2/ja
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
RU2562180C1
(en)
*
2014-05-12
2015-09-10
Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования «Национальный исследовательский Томский политехнический университет»
Method of recycling pyrite cinders
Also Published As
Publication number
Publication date
CA997153A
(en)
1976-09-21
US3876747A
(en)
1975-04-08
FR2195693A1
(en)
1974-03-08
FR2195693B1
(en)
1976-11-19
NO134877B
(en)
1976-09-20
AU452151B2
(en)
1974-08-29
FI58162C
(en)
1980-12-10
BE803392A
(en)
1973-12-03
JPS4945822A
(en)
1974-05-01
NO134877C
(en)
1976-12-29
FI58162B
(en)
1980-08-29
AU5880973A
(en)
1974-08-29
IT993720B
(en)
1975-09-30
ZA725498B
(en)
1973-09-26
JPS5343133B2
(en)
1978-11-17
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Legal Events
Date
Code
Title
Description
1976-10-27
PS
Patent sealed [section 19, patents act 1949]
1983-03-02
PCNP
Patent ceased through non-payment of renewal fee
