GB433333A - Improvements in black oxide of iron - Google Patents

Improvements in black oxide of iron

Info

Publication number
GB433333A
GB433333A GB1339734A GB1339734A GB433333A GB 433333 A GB433333 A GB 433333A GB 1339734 A GB1339734 A GB 1339734A GB 1339734 A GB1339734 A GB 1339734A GB 433333 A GB433333 A GB 433333A
Authority
GB
United Kingdom
Prior art keywords
lbs
precipitation
oxidation
per
iron
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
GB1339734A
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.)
JOSEPH WILLIAMS AYERS
Original Assignee
JOSEPH WILLIAMS AYERS
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 JOSEPH WILLIAMS AYERS filed Critical JOSEPH WILLIAMS AYERS
Priority to GB1339734A priority Critical patent/GB433333A/en
Publication of GB433333A publication Critical patent/GB433333A/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
    • C01G49/02—Oxides; Hydroxides
    • C01G49/08—Ferroso-ferric oxide [Fe3O4]
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Iron (AREA)

Abstract

Black oxide of iron is obtained from precipita<PICT:0433333/III/1> ted ferrous compounds by oxidation with air or other oxygen - containing gas at elevated temperatures, say from 220--300 DEG F., and at pressures above about 40 lbs. per sq. in. and up to say 100 lbs. per sq.in. The precipitate may be obtained by treating ferrous sulphate or chloride with an alkali carbonate or hydroxide, preferably in excess, and precipitation may be effected at temperatures of 125--200 DEG F. Precipitation and oxidation may take place in a steam - jacketed autoclave 10 provided with inlets 11--13 for the reactants and an outlet tube 22. Turbine wheels 17, 18 mounted on a rotating shaft 14 serve to draw slurry towards the axis of the autoclave and force it out from the periphery of the wheels, vanes 19, 21 being fitted to minimize swirling and cause vertical movement of the slurry. Air is supplied through a pipe 27 to a perforated annular conduit 28 situated above the wheel 18.
GB1339734A 1934-05-03 1934-05-03 Improvements in black oxide of iron Expired GB433333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1339734A GB433333A (en) 1934-05-03 1934-05-03 Improvements in black oxide of iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1339734A GB433333A (en) 1934-05-03 1934-05-03 Improvements in black oxide of iron

Publications (1)

Publication Number Publication Date
GB433333A true GB433333A (en) 1935-08-13

Family

ID=10022211

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1339734A Expired GB433333A (en) 1934-05-03 1934-05-03 Improvements in black oxide of iron

Country Status (1)

Country Link
GB (1) GB433333A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529874A (en) * 1947-09-27 1950-11-14 Mellon Inst Of Ind Res Process for manufacturing ammonium salts and magnetic iron oxide from solutions of ferrous salts
US2665193A (en) * 1948-11-22 1954-01-05 Minnesota Mining & Mfg Red iron oxide of high color purity and process of making same
US4024232A (en) * 1974-02-25 1977-05-17 Montedison S.P.A. Method of preparing magnetite having a controlled particle size, starting from ferrous sulphate solutions
US4025611A (en) * 1974-02-25 1977-05-24 Montedison Fibre S.P.A. Process for obtaining hyperfine magnetite powder
US4054639A (en) * 1974-02-25 1977-10-18 Montedison S.P.A. Process for preparing magnetite starting from ferrous sulphate solutions
CN111573740A (en) * 2020-07-02 2020-08-25 正太新材料科技有限责任公司 Preparation method of iron oxide black
CN113772741A (en) * 2021-09-06 2021-12-10 江苏宇星科技有限公司 Method for producing iron oxide black by liquid phase synthesis

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529874A (en) * 1947-09-27 1950-11-14 Mellon Inst Of Ind Res Process for manufacturing ammonium salts and magnetic iron oxide from solutions of ferrous salts
US2665193A (en) * 1948-11-22 1954-01-05 Minnesota Mining & Mfg Red iron oxide of high color purity and process of making same
US4024232A (en) * 1974-02-25 1977-05-17 Montedison S.P.A. Method of preparing magnetite having a controlled particle size, starting from ferrous sulphate solutions
US4025611A (en) * 1974-02-25 1977-05-24 Montedison Fibre S.P.A. Process for obtaining hyperfine magnetite powder
US4054639A (en) * 1974-02-25 1977-10-18 Montedison S.P.A. Process for preparing magnetite starting from ferrous sulphate solutions
CN111573740A (en) * 2020-07-02 2020-08-25 正太新材料科技有限责任公司 Preparation method of iron oxide black
CN111573740B (en) * 2020-07-02 2022-08-23 正太新材料科技有限责任公司 Preparation method of iron oxide black
CN113772741A (en) * 2021-09-06 2021-12-10 江苏宇星科技有限公司 Method for producing iron oxide black by liquid phase synthesis

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