FI902309A0 - Foerfarande foer tillverkning av jaernoxid som har stor reaktivitet och stor specifik yta. - Google Patents

Foerfarande foer tillverkning av jaernoxid som har stor reaktivitet och stor specifik yta.

Info

Publication number
FI902309A0
FI902309A0 FI902309A FI902309A FI902309A0 FI 902309 A0 FI902309 A0 FI 902309A0 FI 902309 A FI902309 A FI 902309A FI 902309 A FI902309 A FI 902309A FI 902309 A0 FI902309 A0 FI 902309A0
Authority
FI
Finland
Prior art keywords
stor
reactivity
jaernoxid
specifik
yta
Prior art date
Application number
FI902309A
Other languages
English (en)
Inventor
Jose Marcio Jardim Paixao
Original Assignee
Vale Do Rio Doce Co
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 Vale Do Rio Doce Co filed Critical Vale Do Rio Doce Co
Publication of FI902309A0 publication Critical patent/FI902309A0/fi

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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/02—Well-drilling compositions
    • C09K8/03—Specific additives for general use in well-drilling compositions
    • C09K8/032—Inorganic additives
    • 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
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Compounds Of Iron (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Saccharide Compounds (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Developing Agents For Electrophotography (AREA)
FI902309A 1987-11-09 1990-05-08 Foerfarande foer tillverkning av jaernoxid som har stor reaktivitet och stor specifik yta. FI902309A0 (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR8706002A BR8706002A (pt) 1987-11-09 1987-11-09 Processo para producao de oxido de ferro de alta reatividade e alta superficie especifica
PCT/BR1988/000008 WO1989004292A1 (en) 1987-11-09 1988-06-09 Process for the production of iron oxide having high reactivity and high specific surface

Publications (1)

Publication Number Publication Date
FI902309A0 true FI902309A0 (fi) 1990-05-08

Family

ID=4043533

Family Applications (1)

Application Number Title Priority Date Filing Date
FI902309A FI902309A0 (fi) 1987-11-09 1990-05-08 Foerfarande foer tillverkning av jaernoxid som har stor reaktivitet och stor specifik yta.

Country Status (9)

Country Link
EP (1) EP0385991B1 (fi)
JP (1) JPH03503156A (fi)
AT (1) ATE76389T1 (fi)
AU (1) AU621826B2 (fi)
BR (1) BR8706002A (fi)
DE (1) DE3871396D1 (fi)
DK (1) DK113590A (fi)
FI (1) FI902309A0 (fi)
WO (1) WO1989004292A1 (fi)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2870003A (en) * 1957-06-17 1959-01-20 Ontario Research Foundation Method of converting hematite to magnetite
US3160499A (en) * 1961-06-28 1964-12-08 Pullman Inc Method for reducing metal oxides
GB979979A (en) * 1962-06-12 1965-01-06 W S Moore Co Improvements in or relating to magnetite
CA1047243A (en) * 1973-06-28 1979-01-30 Irwin Fox Porous fe304 drilling mud additive
JPS55154322A (en) * 1979-05-11 1980-12-01 Tdk Corp Manufacture of iron oxide
JPS55154323A (en) * 1979-05-11 1980-12-01 Tdk Corp Manufacture of iron oxide
BR8305404A (pt) * 1983-09-30 1985-05-07 Petroleo Brasileiro Sa Processo de obter concentrado de magnetita de grande area especifica
BR8500346A (pt) * 1985-01-25 1986-09-09 Petroleo Brasileiro Sa Processo de preparacao de aditivo para lamas de perfuracao e lamas de perfuracao

Also Published As

Publication number Publication date
JPH03503156A (ja) 1991-07-18
DK113590A (da) 1990-06-18
AU1940588A (en) 1989-06-01
WO1989004292A1 (en) 1989-05-18
AU621826B2 (en) 1992-03-26
BR8706002A (pt) 1989-05-30
ATE76389T1 (de) 1992-06-15
EP0385991A1 (en) 1990-09-12
EP0385991B1 (en) 1992-05-20
DE3871396D1 (de) 1992-06-25
DK113590D0 (da) 1990-05-08

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Legal Events

Date Code Title Description
FD Application lapsed
MM Patent lapsed

Owner name: COMPANHIA VALE DO RIO DOCE