GB1271884A - Process for the production of ferric oxide, sulphuric acid and sulphur dioxide from ferrous sulphate - Google Patents

Process for the production of ferric oxide, sulphuric acid and sulphur dioxide from ferrous sulphate

Info

Publication number
GB1271884A
GB1271884A GB1803570A GB1803570A GB1271884A GB 1271884 A GB1271884 A GB 1271884A GB 1803570 A GB1803570 A GB 1803570A GB 1803570 A GB1803570 A GB 1803570A GB 1271884 A GB1271884 A GB 1271884A
Authority
GB
United Kingdom
Prior art keywords
stage
gas
feso
gases
production
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
GB1803570A
Inventor
Filippo Barilli
Giorgio Cozza
Vittorio Bareggi
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.)
Societa Italiana Resine SpA SIR
Original Assignee
Societa Italiana Resine SpA SIR
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 Societa Italiana Resine SpA SIR filed Critical Societa Italiana Resine SpA SIR
Publication of GB1271884A publication Critical patent/GB1271884A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C01B17/48—Sulfur dioxide; Sulfurous acid
    • C01B17/50—Preparation of sulfur dioxide
    • C01B17/501—Preparation of sulfur dioxide by reduction of sulfur compounds
    • C01B17/506—Preparation of sulfur dioxide by reduction of sulfur compounds of calcium sulfates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • C01G49/06—Ferric oxide (Fe2O3)

Abstract

1,271,884. Fe 2 O 3 , SO 2 and H 2 SO 4 from FeSO 4 7H 2 O. SOC. ITALIANA RESINE S.p.A. 15 April, 1970 [19 April, 1969], No. 18035/70. Heading C1A. Fe 2 O 3 , SO 2 and H 2 SO 4 are produced by (1) heating FeSO 4 . 7H 2 O to remove 40-60% of the water of crystallization, (2) heating with gases from stage (3) to form FeSO 4 .H 2 O, (3) decomposing the FeSO 4 . H 2 O with pyrites in a hot O 2 - containing gas to form Fe 2 O 3 and gases containing SO 2 and SO 3 , and (4) contacting the gases from (2) with H 2 SO 4 in a molar solution : gas ratio of 5 : 1 to 2 : 1 to give H 2 SO 4 of at least 75% concn, and SO 2 gas. Stage (1) may be effected at above 70‹ C., e.g. 100‹ C., and stage (3) at 800‹ C. The gas after stage (2) may be at 320-380‹ C. and have a molar SO 2 : SO 3 ratio of 5 : 1 to 10 : 1. The hot gas for stage (3) may be produced by burning fuel oil in excess air. The H 2 SO 4 produced may be recirculated for contacting the gases.
GB1803570A 1969-04-19 1970-04-15 Process for the production of ferric oxide, sulphuric acid and sulphur dioxide from ferrous sulphate Expired GB1271884A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT857062 1969-04-19

Publications (1)

Publication Number Publication Date
GB1271884A true GB1271884A (en) 1972-04-26

Family

ID=11126869

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1803570A Expired GB1271884A (en) 1969-04-19 1970-04-15 Process for the production of ferric oxide, sulphuric acid and sulphur dioxide from ferrous sulphate

Country Status (1)

Country Link
GB (1) GB1271884A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee