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GB1001490A - Improvements in the treatment of iron sulphate heptahydrate - Google Patents

Improvements in the treatment of iron sulphate heptahydrate

Info

Publication number
GB1001490A
GB1001490A GB20052/62A GB2005262A GB1001490A GB 1001490 A GB1001490 A GB 1001490A GB 20052/62 A GB20052/62 A GB 20052/62A GB 2005262 A GB2005262 A GB 2005262A GB 1001490 A GB1001490 A GB 1001490A
Authority
GB
United Kingdom
Prior art keywords
mixture
sulphate
calcium
over
oxide
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
GB20052/62A
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.)
Fried Krupp AG Hoesch Krupp
Original Assignee
Hoesch AG
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 Hoesch AG filed Critical Hoesch AG
Priority to US304121A priority Critical patent/US3228451A/en
Publication of GB1001490A publication Critical patent/GB1001490A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • 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]
    • 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
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Compounds Of Iron (AREA)

Abstract

A mixture of solid iron sulphate heptahydrate FeSO4.7H2O (which contains residual moisture or which has been moistened, and which may be derived from the liquor used in the pickling of steel) and solid calcium oxide is turned over until the setting of the sulphate by the calcium. The calcium oxide may be in a pulverized form, in a stiochiometric excess, or in a 1 : 1 weight ratio with the sulphate. The atmosphere over the mixture may be evacuated during the turning over of the mixture, preferably after the evolution of steam. Oxygen may be passed over the mixture, or the mixture may be heated externally, and ferric oxide, Fe2O3, may be formed. The mixture of ferric oxide and calcium sulphate may be separated by wet magnetic separation.
GB20052/62A 1957-06-25 1957-06-25 Improvements in the treatment of iron sulphate heptahydrate Expired GB1001490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US304121A US3228451A (en) 1957-06-25 1963-08-23 Method of burning fuels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH42705A DE1165564B (en) 1961-05-26 1961-05-26 Process for the preparation of iron sulfate heptahydrate

Publications (1)

Publication Number Publication Date
GB1001490A true GB1001490A (en) 1965-08-18

Family

ID=7154958

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20052/62A Expired GB1001490A (en) 1957-06-25 1957-06-25 Improvements in the treatment of iron sulphate heptahydrate

Country Status (3)

Country Link
DE (1) DE1165564B (en)
GB (1) GB1001490A (en)
LU (1) LU41731A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292085A (en) * 1978-09-14 1981-09-29 Euteco Impianti S.P.A. Method for converting into a non-polluting particulate product the ferrous sulphate obtained in the production of titanium dioxide by the sulphate process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292085A (en) * 1978-09-14 1981-09-29 Euteco Impianti S.P.A. Method for converting into a non-polluting particulate product the ferrous sulphate obtained in the production of titanium dioxide by the sulphate process

Also Published As

Publication number Publication date
LU41731A1 (en) 1962-07-17
DE1165564B (en) 1964-03-19

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