SE8001030L - PIGMENT OF SYNTHETIC ROMBOID MAGNETIT - Google Patents

PIGMENT OF SYNTHETIC ROMBOID MAGNETIT

Info

Publication number
SE8001030L
SE8001030L SE8001030A SE8001030A SE8001030L SE 8001030 L SE8001030 L SE 8001030L SE 8001030 A SE8001030 A SE 8001030A SE 8001030 A SE8001030 A SE 8001030A SE 8001030 L SE8001030 L SE 8001030L
Authority
SE
Sweden
Prior art keywords
magnetite
synthetic
microns
temperature
less
Prior art date
Application number
SE8001030A
Other languages
Swedish (sv)
Other versions
SE445209B (en
Inventor
E Mayer
Original Assignee
Pfizer
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 Pfizer filed Critical Pfizer
Publication of SE8001030L publication Critical patent/SE8001030L/en
Publication of SE445209B publication Critical patent/SE445209B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62—Heavy metal compounds
    • C02F1/64—Heavy metal compounds of iron or manganese
    • C02F1/645—Devices for iron precipitation and treatment by air
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/22—Compounds of iron
    • C09C1/24—Oxides of iron
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • 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
    • C01P2006/12—Surface area
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/203—Iron or iron compound
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/02—Temperature

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Inorganic Chemistry (AREA)
  • Nanotechnology (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Compounds Of Iron (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Magnetic Treatment Devices (AREA)
  • Rehabilitation Tools (AREA)
  • Hard Magnetic Materials (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Paints Or Removers (AREA)

Abstract

In a process for producing a synthetic rhombohedral magnetite comprising the steps of: A. Contacting ferrous chloride solution having an Fe<++> concentration of from 0.87 to 3.0 moles per litre with at least a stoichiometric amount of carbonate ion; B. aerating the mixture at a temperature of from 70-90 DEG C so as to oxidize the iron to magnetite having a Fe<++>/total Fe<++> and Fe<+++> ratio of from 0.25-0.38; and C. recovering the magnetite so produced, the improvement which comprises providing the carbonate in the form of finely divided particles of an average size of less than 3.5 microns. The magnetite may be calcined at a temperature of from 650 DEG -925 DEG C. In the presence of oxygen to produce alpha ferric oxide. Also claimed is a synthetic rhombohedral magnetite having a BET surface area of greater than 13 m<2>/g and an average particle size of less than 0.08 microns as measures along the long axis.
SE8001030A 1979-02-09 1980-02-08 PIGMENT OF SYNTHETIC ROMBOID MAGNETIT SE445209B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US1064779A 1979-02-09 1979-02-09
US7562879A 1979-09-14 1979-09-14

Publications (2)

Publication Number Publication Date
SE8001030L true SE8001030L (en) 1980-08-10
SE445209B SE445209B (en) 1986-06-09

Family

ID=26681426

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8001030A SE445209B (en) 1979-02-09 1980-02-08 PIGMENT OF SYNTHETIC ROMBOID MAGNETIT

Country Status (14)

Country Link
KR (1) KR830001565B1 (en)
AR (1) AR224757A1 (en)
AU (1) AU516998B2 (en)
BR (1) BR8000787A (en)
CA (1) CA1149582A (en)
DE (1) DE3004718C2 (en)
ES (1) ES8101517A1 (en)
FR (1) FR2448559A1 (en)
GB (1) GB2040904B (en)
IT (1) IT1147301B (en)
MX (1) MX154219A (en)
NL (1) NL181190C (en)
NO (1) NO156489C (en)
SE (1) SE445209B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500471A1 (en) * 1985-01-09 1986-07-10 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING ISOMETRIC MAGNETIC IRON OXIDE PIGMENTS
DE3500470A1 (en) * 1985-01-09 1986-07-10 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING LIGHT COLORED PURE IRON OXIDE RED PIGMENTS
US5518633A (en) * 1994-10-21 1996-05-21 E. I. Du Pont De Nemours And Company Process for treating aqueous media containing metal ions
DE19919791A1 (en) 1999-04-30 2000-11-02 Bayer Ag Process for the production of precipitation magnetites
DE10043492A1 (en) 2000-09-01 2002-03-14 Bayer Ag Use of magnetic particles and process for their manufacture
DE10044397A1 (en) 2000-09-08 2002-03-21 Bayer Ag Magnetites and their use in the manufacture of toners
DE10101769A1 (en) 2001-01-17 2002-07-18 Bayer Ag Production of octahedral magnetite, used in electrophotography and magnetic toner, for coloring paper, plastics, lacquers, fibers or concrete or in colors, involves two-stage precipitation in aqueous alkaline solution and oxidation
US6800260B2 (en) * 2002-02-11 2004-10-05 Millennium Inorganic Chemicals, Inc. Processes for treating iron-containing waste streams
DE10209150A1 (en) 2002-03-01 2003-09-11 Bayer Ag Process for the production of magnetite particles and their use

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190905618A (en) * 1909-03-09 1910-01-13 John Gill Improvements in the Manufacture of Ferric Oxide.
US1269442A (en) * 1917-11-10 1918-06-11 Addison F Hoffman Process of producing by-products from waste pickle liquor.
US1824936A (en) * 1928-06-30 1931-09-29 Ohio Sanitary Engineering Corp Process for purifying industrial waste liquors
DE900257C (en) * 1938-08-11 1953-12-21 Bayer Ag Production of black iron oxide pigments
US3261665A (en) * 1962-11-05 1966-07-19 Du Pont Process for the treatment of waste sulfuric acid pickle liquor
DE1263452B (en) * 1962-11-05 1968-03-14 Du Pont Process for the processing of used pickling solutions
US3434797A (en) * 1967-07-27 1969-03-25 Du Pont Process for treatment of hydrochloric acid waste pickle liquor
GB1218601A (en) * 1968-01-01 1971-01-06 Unifloc Ltd Disposal of waste liquors from pickling processes
US3617560A (en) * 1969-09-17 1971-11-02 Us Interior Limestone neutralization of dilute acid waste waters
US3617562A (en) * 1970-05-08 1971-11-02 Allen Cywin Neutralization of ferrous iron-containing acid wastes
US3927173A (en) * 1974-02-22 1975-12-16 Armco Steel Corp Treatment of acid waste waters to produce ferromagnetic sludges
DE2518283C3 (en) * 1975-04-24 1979-02-15 Bayer Ag, 5090 Leverkusen Process for the production of iron oxide black pigments
AU512846B2 (en) * 1976-07-02 1980-10-30 Toledo Pickling and Steel Service, Inc System for the regeneration of waste hydrochloric acid pickle liquor

Also Published As

Publication number Publication date
AU5538380A (en) 1980-08-14
FR2448559A1 (en) 1980-09-05
IT8019809A0 (en) 1980-02-08
DE3004718C2 (en) 1984-07-05
KR830001565B1 (en) 1983-08-12
BR8000787A (en) 1980-10-21
NO156489B (en) 1987-06-22
NO156489C (en) 1987-09-30
ES488433A0 (en) 1980-12-16
MX154219A (en) 1987-06-19
DE3004718A1 (en) 1980-08-14
GB2040904A (en) 1980-09-03
NL8000795A (en) 1980-08-12
ES8101517A1 (en) 1980-12-16
GB2040904B (en) 1983-01-06
IT1147301B (en) 1986-11-19
FR2448559B1 (en) 1983-12-09
NO800345L (en) 1980-08-11
AR224757A1 (en) 1982-01-15
NL181190B (en) 1987-02-02
AU516998B2 (en) 1981-07-02
CA1149582A (en) 1983-07-12
SE445209B (en) 1986-06-09
NL181190C (en) 1987-07-01
KR830001815A (en) 1983-05-19

Similar Documents

Publication Publication Date Title
FR2353619A1 (en) PRODUCTION OF IRON OXIDE PIGMENTS WITH IMPROVED RESISTANCE TO OXIDATION
SE8001030L (en) PIGMENT OF SYNTHETIC ROMBOID MAGNETIT
GB1347615A (en) Cobalt doped magnetic iron oxide particles
AU569631B2 (en) Production of iron oxide catalyst
GB1190026A (en) Magnetic Iron Oxides and processes therefor
GB1487008A (en) Preparation of magnetite from ferrous sulphate
GB1420833A (en) Production of composite pigments of iron oxide and carbon black
JPS5269898A (en) Production of phosphate pigment
JPS54106895A (en) Ferromagnetic powder
KR860008090A (en) Method of producing ferromagnetic chromium dioxide
SU786882A3 (en) Method of magnetite production
JPS5669229A (en) Preparation of hydrous iron oxide
JPS57198607A (en) Manufacture of magnetic iron oxide particle powder for magnetic recording material
JPS57124404A (en) Manufacture of magnetic iron oxide powder
GB1193015A (en) Coated Iron Oxide Pigments and Process thereof
JPS57106527A (en) Manufacture of needlelike fine particle of iron oxyhydroxide
JPS5761635A (en) Production of hydrate iron oxide
JPS57200230A (en) Ultra-fine powder of black ferrosoferric oxide and its preparation
JPS5613409A (en) Manufacture of ferromagnetic alloy powder
JPS5796504A (en) Manufacture of ferromagnetic iron compound particle for magnetic recording medium
JPS5376197A (en) Production of magnetic iron oxide
JPS5469594A (en) Production of ferric oxide and magnetic material
SU634380A1 (en) Ferrite material
GB1212126A (en) A METHOD OF MANUFACTURING gamma-Fe2O3 PARTICLES
GB190921884A (en) Improvements in the Manufacture of Ferric Oxide.

Legal Events

Date Code Title Description
NUG Patent has lapsed

Ref document number: 8001030-9

Effective date: 19910911

Format of ref document f/p: F