GB1392521A – Selective multi-stage leaching process
– Google Patents
GB1392521A – Selective multi-stage leaching process
– Google Patents
Selective multi-stage leaching process
Info
Publication number
GB1392521A
GB1392521A
GB826372A
GB826372A
GB1392521A
GB 1392521 A
GB1392521 A
GB 1392521A
GB 826372 A
GB826372 A
GB 826372A
GB 826372 A
GB826372 A
GB 826372A
GB 1392521 A
GB1392521 A
GB 1392521A
Authority
GB
United Kingdom
Prior art keywords
acid
stage
iron
mineral feed
reaction
Prior art date
1971-04-13
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
GB826372A
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.)
Dor A A
Mcgauley P J
Original Assignee
Dor A A
Mcgauley P J
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.)
1971-04-13
Filing date
1972-02-23
Publication date
1975-04-30
1972-02-23
Application filed by Dor A A, Mcgauley P J
filed
Critical
Dor A A
1975-04-30
Publication of GB1392521A
publication
Critical
patent/GB1392521A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
C—CHEMISTRY; METALLURGY
C01—INORGANIC CHEMISTRY
C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
C01G49/00—Compounds of iron
C01G49/14—Sulfates
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
C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
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
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
Y02P20/00—Technologies relating to chemical industry
Y02P20/10—Process efficiency
Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
1392521 A selective backing process for iron P J McGAULEY and A A DOR 23 Feb 1972 [13 April 1971] 8263/72 Heading C1A A selective multi-stage leaching process for the extraction of acid-reactive iron from iron sulphide mineral feed, and for the production of a high purity solution of ferrous sulphate comprises (a) contacting the iron sulphide mineral feed with sulphuric acid at sufficient concentrations and temperature to initiate and produce with a high rate of reaction a high density slurry that contains residual solids from the mineral feed in a solution that is substantially saturated with ferrous sulphate and contains crystals of FeSO 4 , and a gas that contains H 2 S and water vapour, (b) diluting the high density slurry and contacting the diluted slurry with H 2 S thereby dissolving the crystals of FeSO 4 and causing the reaction of the remaining acid and impurities in the solution with acid soluble iron from the mineral feed and H 2 S respectively to complete the leaching in a second stage, (c) separating the purified solution that is substantially saturated with ferrous sulphate and the gas from the solids at a temperature between 80- 50 C. as products. It is preferred to carry out stage (a) in two sub-stages in the first of which a high initial concentration of sulphuric acid is used to promote a high rate of reaction and in the second of which the reaction is continued to produce the high density slurry for stage (b). Two variants of the multi-stage leaching process are described, viz the co-current and currentcurrent processes, whereby in the former the amount of acid added in stage (a) is equal or approximately equal to that required to react with the acid-soluble iron present and in the latter the acid content in stage (a) is insufficient to react with all the acid-soluble iron in the mineral feed and further acid has to be supplied at a later stage.
GB826372A
1971-04-13
1972-02-23
Selective multi-stage leaching process
Expired
GB1392521A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US133553A
US3860696A
(en)
1971-04-13
1971-04-13
Production of iron sulfate monohydrate
Publications (1)
Publication Number
Publication Date
GB1392521A
true
GB1392521A
(en)
1975-04-30
Family
ID=22459172
Family Applications (3)
Application Number
Title
Priority Date
Filing Date
GB4421974A
Expired
GB1392523A
(en)
1971-04-13
1972-02-23
Process for producing high purity solutions of ferrous sulphate
GB826372A
Expired
GB1392521A
(en)
1971-04-13
1972-02-23
Selective multi-stage leaching process
GB4421874A
Expired
GB1392522A
(en)
1971-04-13
1972-02-23
Production of ferrous sulphate monohydrate
Family Applications Before (1)
Application Number
Title
Priority Date
Filing Date
GB4421974A
Expired
GB1392523A
(en)
1971-04-13
1972-02-23
Process for producing high purity solutions of ferrous sulphate
Family Applications After (1)
Application Number
Title
Priority Date
Filing Date
GB4421874A
Expired
GB1392522A
(en)
1971-04-13
1972-02-23
Production of ferrous sulphate monohydrate
Country Status (9)
Country
Link
US
(1)
US3860696A
(en)
BE
(1)
BE781987A
(en)
CA
(1)
CA970129A
(en)
DE
(1)
DE2217562A1
(en)
ES
(4)
ES401050A1
(en)
FR
(1)
FR2132875A1
(en)
GB
(3)
GB1392523A
(en)
NL
(1)
NL7204867A
(en)
ZA
(1)
ZA721057B
(en)
Families Citing this family (7)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4055631A
(en)
*
1973-10-26
1977-10-25
The Hanna Mining Company
Production of iron sulfate monohydrate
CA1104837A
(en)
*
1977-08-19
1981-07-14
Donald R. Weir
Process for recovery of copper and zinc from complex sulfides
FR2634751B1
(en)
*
1988-07-29
1991-02-08
Metaleurop Sa
IL131652A0
(en)
*
1999-08-30
2001-01-28
Satec Ecochem Ltd
Process for producing metal containing sulfide ores
CN100562490C
(en)
*
2006-12-30
2009-11-25
昆明理工大学
A kind of method of producing sulfuric acid and iron ore concentrate with ferrous sulfate
GB2480439A
(en)
*
2010-05-17
2011-11-23
Tioxide Europe Ltd
A process for forming ferrous sulphate monohydrate
JP5365708B2
(en)
*
2012-01-17
2013-12-11
住友金属鉱山株式会社
Hydrogen sulfide gas production plant and method for recovering and using waste hydrogen sulfide gas
Family Cites Families (8)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US1630881A
(en)
*
1924-04-16
1927-05-31
Andrianne Zalocostas
Manufacture of ferric oxide
US1890934A
(en)
*
1930-04-19
1932-12-13
Carson George Campbell
Method of and means for producing sulphates from mixed sulphide materials and the recovery of values therefrom
US2143805A
(en)
*
1938-06-23
1939-01-10
Co Bartlett & Snow Co
Calcining copperas
US2424866A
(en)
*
1942-04-15
1947-07-29
Marvin J Udy
Process for the treatment of matte to recover metallic salts
US3053651A
(en)
*
1958-01-21
1962-09-11
Chemetals Corp
Treatment of sulfide minerals
US3018166A
(en)
*
1960-03-08
1962-01-23
Jr William Ward Powell
Method for the regeneration of waste solutions of sulfuric acid
US3067010A
(en)
*
1960-10-19
1962-12-04
Dow Chemical Co
Process for preparation of titanium dioxide
NL278352A
(en)
*
1961-05-12
1900-01-01
1971
1971-04-13
US
US133553A
patent/US3860696A/en
not_active
Expired – Lifetime
1972
1972-02-16
CA
CA134,825A
patent/CA970129A/en
not_active
Expired
1972-02-17
ZA
ZA721057A
patent/ZA721057B/en
unknown
1972-02-23
GB
GB4421974A
patent/GB1392523A/en
not_active
Expired
1972-02-23
GB
GB826372A
patent/GB1392521A/en
not_active
Expired
1972-02-23
GB
GB4421874A
patent/GB1392522A/en
not_active
Expired
1972-03-22
ES
ES401050A
patent/ES401050A1/en
not_active
Expired
1972-04-12
FR
FR7212805A
patent/FR2132875A1/fr
not_active
Withdrawn
1972-04-12
BE
BE781987A
patent/BE781987A/en
unknown
1972-04-12
NL
NL7204867A
patent/NL7204867A/xx
unknown
1972-04-12
DE
DE19722217562
patent/DE2217562A1/en
active
Pending
1974
1974-07-31
ES
ES428807A
patent/ES428807A1/en
not_active
Expired
1974-07-31
ES
ES428806A
patent/ES428806A1/en
not_active
Expired
1974-07-31
ES
ES428803A
patent/ES428803A1/en
not_active
Expired
Also Published As
Publication number
Publication date
GB1392522A
(en)
1975-04-30
FR2132875A1
(en)
1972-11-24
GB1392523A
(en)
1975-04-30
ES428807A1
(en)
1976-08-16
NL7204867A
(en)
1972-10-17
ES401050A1
(en)
1975-07-01
ES428803A1
(en)
1976-08-16
DE2217562A1
(en)
1972-10-19
ES428806A1
(en)
1976-08-16
BE781987A
(en)
1972-10-12
CA970129A
(en)
1975-07-01
ZA721057B
(en)
1972-10-25
US3860696A
(en)
1975-01-14
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Legal Events
Date
Code
Title
Description
1976-01-09
CSNS
Application of which complete specification have been accepted and published, but patent is not sealed
