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GB1119236A - A method for the recovery of iron salts and sulphonic acid from spent pickle liquors - Google Patents

A method for the recovery of iron salts and sulphonic acid from spent pickle liquors

Info

Publication number
GB1119236A
GB1119236A GB2690365A GB2690365A GB1119236A GB 1119236 A GB1119236 A GB 1119236A GB 2690365 A GB2690365 A GB 2690365A GB 2690365 A GB2690365 A GB 2690365A GB 1119236 A GB1119236 A GB 1119236A
Authority
GB
United Kingdom
Prior art keywords
slurry
stream
sulphuric acid
gas
acid
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
GB2690365A
Inventor
James Anthony Gross
Bernard George Mandelik
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.)
Chemical Construction Corp
Original Assignee
Chemical Construction Corp
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 Chemical Construction Corp filed Critical Chemical Construction Corp
Priority to GB2690365A priority Critical patent/GB1119236A/en
Publication of GB1119236A publication Critical patent/GB1119236A/en
Expired legal-status Critical Current

Links

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
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/90—Separation; Purification
    • C01B17/901—Recovery from spent acids containing metallic ions, e.g. hydrolysis acids, pickling acids
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/36—Regeneration of waste pickling liquors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

<PICT:1119236/C1/1> Pickle liquor containing ferrous sulphate and free sulphuric acid is concentrated by adding strong sulphuric acid, projecting the combined stream transverse to an accelerated stream of hot gas to form fine liquid droplets of reduced water content, separating the gas stream from the liquid phase, collecting said liquid phase as a slurry of ferrous sulphate crystals in strong sulphuric acid solution, and recovering said crystals by filtration. The slurry may first be allowed to settle and the top (acid) layer recycled. In the figure, fresh pickle liquor stream 1 is added to recycle stream 2. Filtered acid may be added if required. The combined stream 7 passes into chamber 11 and flows down the walls 10. Hot gas enters via 13 and may be derived from combustion of natural gas, fuel oil or residual heavy oil. The temperature of the gas may be 800 to 2300 DEG C. The vapour passes out through 17 while the slurry is allowed to settle in vessel 19. Recycled sulphuric acid leaves through 21 and slurry through 23. The slurry is filtered at 24.
GB2690365A 1965-06-24 1965-06-24 A method for the recovery of iron salts and sulphonic acid from spent pickle liquors Expired GB1119236A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2690365A GB1119236A (en) 1965-06-24 1965-06-24 A method for the recovery of iron salts and sulphonic acid from spent pickle liquors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2690365A GB1119236A (en) 1965-06-24 1965-06-24 A method for the recovery of iron salts and sulphonic acid from spent pickle liquors

Publications (1)

Publication Number Publication Date
GB1119236A true GB1119236A (en) 1968-07-10

Family

ID=10251030

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2690365A Expired GB1119236A (en) 1965-06-24 1965-06-24 A method for the recovery of iron salts and sulphonic acid from spent pickle liquors

Country Status (1)

Country Link
GB (1) GB1119236A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071837A1 (en) * 1981-08-04 1983-02-16 Bayer Ag Process for decomposing diluted sulfuric acid
GB2134095A (en) * 1983-01-25 1984-08-08 Outokumpu Oy Method for regenerating pickling acids
EP0476172A1 (en) * 1990-09-20 1992-03-25 KRONOS TITAN-Gesellschaft mbH Process for preconcentrating diluted acid obtained during titanium dioxide preparation according to the sulphate process and use of apparatus for this process
GB2305425A (en) * 1995-09-18 1997-04-09 Cecebe Technologies Inc Recovering sulphuric acid from waste acid containing sulphates
WO2010125205A1 (en) * 2009-04-27 2010-11-04 Tioxide Europe, S.L. Method for producing ferrous sulphate from pyrite ash
WO2011144927A1 (en) * 2010-05-17 2011-11-24 Tioxide Europe Limited Process for the production of ferrous sulphate monohydrate

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071837A1 (en) * 1981-08-04 1983-02-16 Bayer Ag Process for decomposing diluted sulfuric acid
GB2134095A (en) * 1983-01-25 1984-08-08 Outokumpu Oy Method for regenerating pickling acids
EP0476172A1 (en) * 1990-09-20 1992-03-25 KRONOS TITAN-Gesellschaft mbH Process for preconcentrating diluted acid obtained during titanium dioxide preparation according to the sulphate process and use of apparatus for this process
GB2305425A (en) * 1995-09-18 1997-04-09 Cecebe Technologies Inc Recovering sulphuric acid from waste acid containing sulphates
GB2305425B (en) * 1995-09-18 1999-04-14 Cecebe Technologies Inc Process for the recovery of waste sulphuric acid
AU704554B2 (en) * 1995-09-18 1999-04-29 Noram Engineering And Constructors Ltd. Process for the recovery of waste sulphuric acid
WO2010125205A1 (en) * 2009-04-27 2010-11-04 Tioxide Europe, S.L. Method for producing ferrous sulphate from pyrite ash
WO2011144927A1 (en) * 2010-05-17 2011-11-24 Tioxide Europe Limited Process for the production of ferrous sulphate monohydrate
CN102892711A (en) * 2010-05-17 2013-01-23 钛白粉欧洲有限公司 Process for the production of ferrous sulphate monohydrate

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