ES449926A1 - Procedimiento para la recuperacion y explotacion de produc- tos de desecho en la produccion de anhidrido cromico. - Google Patents

Procedimiento para la recuperacion y explotacion de produc- tos de desecho en la produccion de anhidrido cromico.

Info

Publication number
ES449926A1
ES449926A1 ES449926A ES449926A ES449926A1 ES 449926 A1 ES449926 A1 ES 449926A1 ES 449926 A ES449926 A ES 449926A ES 449926 A ES449926 A ES 449926A ES 449926 A1 ES449926 A1 ES 449926A1
Authority
ES
Spain
Prior art keywords
chromic anhydride
recovering
sodium
anhydride production
exploiting
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
ES449926A
Other languages
English (en)
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.)
Luigi Stoppani SpA
Original Assignee
Luigi Stoppani SpA
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 Luigi Stoppani SpA filed Critical Luigi Stoppani SpA
Publication of ES449926A1 publication Critical patent/ES449926A1/es
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/02—Oxides or hydrates thereof
    • C01G37/033—Chromium trioxide; Chromic acid
    • 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
    • C01P2006/80—Compositional purity
    • 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
    • C01P2006/80—Compositional purity
    • C01P2006/82—Compositional purity water content
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00—Liquid purification or separation
    • Y10S210/902—Materials removed
    • Y10S210/911—Cumulative poison
    • Y10S210/912—Heavy metal
    • Y10S210/913—Chromium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Processing Of Solid Wastes (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
ES449926A 1975-08-28 1976-07-17 Procedimiento para la recuperacion y explotacion de produc- tos de desecho en la produccion de anhidrido cromico. Expired ES449926A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT26686/75A IT1042133B (it) 1975-08-28 1975-08-28 Procedimento per il recupero e la valorizzazione degli scarti della fabbricazione dell anidri de cromica

Publications (1)

Publication Number Publication Date
ES449926A1 true ES449926A1 (es) 1977-12-01

Family

ID=11220036

Family Applications (1)

Application Number Title Priority Date Filing Date
ES449926A Expired ES449926A1 (es) 1975-08-28 1976-07-17 Procedimiento para la recuperacion y explotacion de produc- tos de desecho en la produccion de anhidrido cromico.

Country Status (12)

Country Link
US (1) US4045340A (es)
JP (1) JPS5230289A (es)
BR (1) BR7604998A (es)
DE (1) DE2633570C3 (es)
ES (1) ES449926A1 (es)
FR (1) FR2322099A1 (es)
GB (1) GB1521405A (es)
IN (1) IN145701B (es)
IT (1) IT1042133B (es)
RO (1) RO72146A (es)
SU (1) SU1068025A3 (es)
ZA (1) ZA764123B (es)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7802123A (nl) * 1978-02-25 1979-08-28 Akzo Nv Werkwijze voor het verwijderen van zware metalen uit waterige stoffen.
DE3222567C2 (de) * 1982-06-16 1986-06-05 Schott Glaswerke, 6500 Mainz Farbloses, cer- und phosphorhaltiges Bariumsilikatglas mit guten Szintillationseigenschaften
JPS6199334U (es) * 1984-12-03 1986-06-25
IT1216507B (it) * 1988-03-23 1990-03-08 Stoppani Luigi Spa Procedimento per il recupero di anidride cromica da soluzioni acquose esauste di bagni di cromatura con valorizzazione del cromo recuperato.
DE3815240A1 (de) * 1988-05-05 1989-11-16 Bayer Ag Verfahren zur herstellung von na-dichromat
US5393503A (en) * 1991-09-09 1995-02-28 Occidental Chemical Corporation Process for making chromic acid
CN102320685B (zh) * 2011-05-31 2013-01-23 重庆民丰化工有限责任公司 铬酸酐制备工艺中硫酸氢钠废液的处理方法
CN103449522B (zh) * 2012-06-01 2016-03-09 中国科学院过程工程研究所 一种含铬废渣生产铬酸盐的方法
CN104726689B (zh) * 2013-12-24 2017-05-10 中国科学院过程工程研究所 一种低温常压流化分解铬铁矿的方法
CN104843790B (zh) * 2015-05-22 2016-11-30 四川省银河化学股份有限公司 一种铬铁矿酸溶氧化制备铬酸钠的方法
CN111484079B (zh) * 2020-04-23 2022-08-02 成都铬科高化工技术有限责任公司 一种萘醌生产含铬废液制备氧化铬绿的方法
CN114212821A (zh) * 2022-01-07 2022-03-22 重庆民丰化工有限责任公司 一种利用铬酸酐副产物生产铬绿的方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB739760A (en) * 1953-03-20 1955-11-02 Diamond Alkali Co Improvements in or relating to the manufacture of solid chromic anhydride
US3002815A (en) * 1958-07-17 1961-10-03 Bayer Ag Process for the production of chromium trioxide
JPS5021992B1 (es) * 1968-02-17 1975-07-26
AU452489B2 (en) * 1971-03-04 1974-08-16 Montecatini Edisons. P. A Process for preparing ferromagnetic chromium dioxide

Also Published As

Publication number Publication date
SU1068025A3 (ru) 1984-01-15
FR2322099B1 (es) 1980-04-30
DE2633570C3 (de) 1979-02-01
GB1521405A (en) 1978-08-16
RO72146A (ro) 1982-10-26
BR7604998A (pt) 1977-08-09
FR2322099A1 (fr) 1977-03-25
IN145701B (es) 1978-12-02
ZA764123B (en) 1977-06-29
DE2633570A1 (de) 1977-03-03
US4045340A (en) 1977-08-30
JPS5230289A (en) 1977-03-07
DE2633570B2 (de) 1978-06-01
JPS5551854B2 (es) 1980-12-26
IT1042133B (it) 1980-01-30

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970930