GB376719A - Process for utilising ferrous sulphate - Google Patents

Process for utilising ferrous sulphate

Info

Publication number
GB376719A
GB376719A GB846/31A GB84631A GB376719A GB 376719 A GB376719 A GB 376719A GB 846/31 A GB846/31 A GB 846/31A GB 84631 A GB84631 A GB 84631A GB 376719 A GB376719 A GB 376719A
Authority
GB
United Kingdom
Prior art keywords
ammonia
sulphate
ferrous sulphate
oxidation
ferric
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
GB846/31A
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.)
Evonik Operations GmbH
Original Assignee
TH Goldschmidt 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 TH Goldschmidt AG filed Critical TH Goldschmidt AG
Publication of GB376719A publication Critical patent/GB376719A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00Compounds of iron
    • C01G49/02Oxides; Hydroxides
    • C01G49/06Ferric oxide [Fe2O3]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Compounds Of Iron (AREA)

Abstract

In the reaction between ferrous sulphate and ammonia, producing ammonium sulphate and iron oxide or hydroxide, the latter is deposited by means of an oxidation process, oxygen or oxygen-containing gases being specified for this purpose, in a stage higher than the divalent stage of oxidation. In examples, a solution of ferrous sulphate and ammonia is treated in an autoclave at 200 DEG C. with air at a pressure of 8 and 13 atmospheres respectively. The process may be effected without pressure, but an elevated temperature is desirable. In another modification, the admission of ammonia and the oxidation proceed simultaneously. The filtered solution is concentrated. The ferrous sulphate may be oxidized in the solid state, for example, by air at elevated temperatures (whereby basic ferric sulphate is produced); the product is reacted with aqueous ammonia and the ferric hydroxide filtered, or in a modification gaseous ammonia may be passed over the heated salt together with or subsequent to the oxidizing gases. Above 400 DEG C., ammonium sulphate is volatilized. Reference is made to the use of directly-heated rotary furnaces. Ferric oxide produced may be used as a polishing agent or pigment, or for the production of metallic iron.
GB846/31A 1930-01-22 1931-01-09 Process for utilising ferrous sulphate Expired GB376719A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE376719X 1930-01-22

Publications (1)

Publication Number Publication Date
GB376719A true GB376719A (en) 1932-07-14

Family

ID=6344295

Family Applications (1)

Application Number Title Priority Date Filing Date
GB846/31A Expired GB376719A (en) 1930-01-22 1931-01-09 Process for utilising ferrous sulphate

Country Status (1)

Country Link
GB (1) GB376719A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2605169A (en) * 1948-05-26 1952-07-29 Allied Chem & Dye Corp Treatment of waste pickle liquor
EP0272548A2 (en) * 1986-12-17 1988-06-29 Quimica Sudamericana S.A. A process for obtaining ferric oxide and ammonium salts, and apparatus for carrying out said process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2605169A (en) * 1948-05-26 1952-07-29 Allied Chem & Dye Corp Treatment of waste pickle liquor
EP0272548A2 (en) * 1986-12-17 1988-06-29 Quimica Sudamericana S.A. A process for obtaining ferric oxide and ammonium salts, and apparatus for carrying out said process
EP0272548A3 (en) * 1986-12-17 1988-07-27 Sudamericana Quimica Sa A process for obtaining ferric oxide and ammonium salts, and apparatus for carrying out said process

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