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ES8102059A1 - A METHOD OF PURIFYING AND RESPECTIVELY, WHITENING IMPURIFIED CALCIUM SULPHATE. - Google Patents

A METHOD OF PURIFYING AND RESPECTIVELY, WHITENING IMPURIFIED CALCIUM SULPHATE.

Info

Publication number
ES8102059A1
ES8102059A1 ES485483A ES485483A ES8102059A1 ES 8102059 A1 ES8102059 A1 ES 8102059A1 ES 485483 A ES485483 A ES 485483A ES 485483 A ES485483 A ES 485483A ES 8102059 A1 ES8102059 A1 ES 8102059A1
Authority
ES
Spain
Prior art keywords
whitening
calcium sulfate
impurified
purifying
carried out
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
ES485483A
Other languages
Spanish (es)
Other versions
ES485483A0 (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.)
Supra AB
Original Assignee
Supra AB
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 Supra AB filed Critical Supra AB
Publication of ES8102059A1 publication Critical patent/ES8102059A1/en
Publication of ES485483A0 publication Critical patent/ES485483A0/en
Granted legal-status Critical Current

Links

Classifications

    • 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
    • C09C1/02—Compounds of alkaline earth metals or magnesium
    • C09C1/025—Calcium sulfates
    • 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
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/06—Treatment with inorganic compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/51—Particles with a specific particle size distribution
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Paper (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Detergent Compositions (AREA)

Abstract

PROCEDIMIENTO DE PURIFICACION Y/O BLANQUEAMIENTO DE SULFATO DE CALCIO. EL BLANQUEAMIENTO PUEDE REALIZARSE POR TRATAMIENTO DEL SULFATO DE CALCIO CON CLORO, ACIDO HIPOCLOROSO, HIPOCLORITO, DIOXIDO DE CLORO Y/O PEROXIDOS; Y EN GENERAL CON UN AGENTE BLANQUEANTE OXIDANTE. DICHO BLANQUEAMIENTO SE EFECTUA, EN OCASIONES, ESTANDO EL SULFATO DE CALCIO EN SUSPENSIONES ACUOSAS Y SU DURACION SUELE SER DE 5 A 60 MINUTOS. DESPUES DEL BLANQUEAMIENTO EL SULFATO DE CALCIO SE LAVA CON AGUA Y POR POSTERIOR FILTRADO ELIMINA LOS RESIDUOS DE LOS COMPUESTOS DEL BLANQUEAMIENTO. LA PURIFICACION, INDEPENDIENTE A LA OPERACION DE BLANQUEAMIENTO, SE EFECTUA POR FRACCIONAMIENTO EN UN CICLON.CALCIUM SULFATE PURIFICATION AND/OR WHITENING PROCEDURE. WHITENING CAN BE CARRIED OUT BY TREATMENT OF CALCIUM SULFATE WITH CHLORINE, HYPOCHLOROUS ACID, HYPOCHLORITE, CHLORINE DIOXIDE AND/OR PEROXIDES; AND IN GENERAL WITH AN OXIDIZING WHITENING AGENT. SUCH WHITENING IS CARRIED OUT, ON OCCASIONS, WITH THE CALCIUM SULFATE BEING IN AQUEOUS SUSPENSIONS AND ITS DURATION IS USUALLY FROM 5 TO 60 MINUTES. AFTER WHITENING, THE CALCIUM SULFATE IS WASHED WITH WATER AND THEN FILTERED, IT ELIMINATES THE RESIDUE OF THE WHITENING COMPOUNDS. THE PURIFICATION, INDEPENDENT OF THE WHITENING OPERATION, IS CARRIED OUT BY FRACTIONATION IN A CYCLONE.

ES485483A 1978-10-30 1979-10-29 A METHOD OF PURIFYING AND RESPECTIVELY, WHITENING IMPURIFIED CALCIUM SULPHATE. Granted ES485483A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7811216A SE417104B (en) 1978-10-30 1978-10-30 SET TO CLEAN RESPECTIVE PINK POLLUTANED CALCIUM SULPHATE INTENDED TO BE USED AS PIGMENT AND / OR FILLER

Publications (2)

Publication Number Publication Date
ES8102059A1 true ES8102059A1 (en) 1980-12-16
ES485483A0 ES485483A0 (en) 1980-12-16

Family

ID=20336216

Family Applications (1)

Application Number Title Priority Date Filing Date
ES485483A Granted ES485483A0 (en) 1978-10-30 1979-10-29 A METHOD OF PURIFYING AND RESPECTIVELY, WHITENING IMPURIFIED CALCIUM SULPHATE.

Country Status (10)

Country Link
JP (1) JPS5835937B2 (en)
CA (1) CA1125456A (en)
DE (1) DE2943205A1 (en)
ES (1) ES485483A0 (en)
FI (1) FI66416B (en)
FR (1) FR2440386A1 (en)
GB (1) GB2032901B (en)
IT (1) IT1128747B (en)
NL (1) NL7907976A (en)
SE (1) SE417104B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE441457C (en) 1978-10-30 1990-06-18 Supra Ab MAKE SUBSTITUTE SLAM FOR PREPARING FOR PAPER, CARTON AND LIKE, CONTAINING CALCIUM SULPHATE AS PIGMENT
FR2446256A1 (en) * 1979-01-12 1980-08-08 Azote & Prod Chim CHEMICAL GYPSUM PURIFICATION PROCESS
SE469475B (en) * 1990-10-29 1993-07-12 Eka Nobel Ab SAVED TO Pale Particles Containing Calcium Carbonate
BE1005164A3 (en) * 1991-08-02 1993-05-11 Prayon Rupel Technologies Method for preparing a suspension aqueous calcium sulphate base.

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE432675C (en) * 1924-12-25 1926-08-07 Hansa Phosphat U Mineral Muehl Process for cleaning and bleaching barite
DE485007C (en) * 1926-04-04 1929-10-25 Ludwig Kaiser Process for the production of pure white and finely divided barium or calcium sulfate
DE491350C (en) * 1926-12-11 1930-02-08 Ludwig Kaiser Process for the production of pure, white and finely divided barium or calcium sulfate
DE537392C (en) * 1928-02-10 1931-11-02 Sachtleben Akt Ges Fuer Bergba Process for the production of a white, transparent, pure barite
DE586007C (en) * 1928-06-14 1933-10-14 Peter Spence & Sons Ltd Process for the production of finely divided and anhydrous calcium sulphate as paint
GB339797A (en) * 1928-12-18 1930-12-18 Rene Perdu
US2197003A (en) * 1937-11-18 1940-04-16 Glidden Co Process for making pigments
US2522971A (en) * 1947-04-19 1950-09-19 C K William & Co Method of bleaching barytes
DE1467470C2 (en) * 1963-10-28 1974-06-12 Pluess-Staufer Ag, Oftringen, Aargau (Schweiz) Improvement of the whiteness of chalk, calcite or dolomite
GB1394910A (en) * 1972-10-23 1975-05-21 Pluss Stauffer Ag Process for the optical brightening of minerals
JPS5147598A (en) * 1974-10-23 1976-04-23 Denki Kagaku Kogyo Kk Tansankarushiumuno hakushokudokairyoho

Also Published As

Publication number Publication date
GB2032901B (en) 1982-11-03
FI793163A7 (en) 1980-05-01
SE7811216L (en) 1980-05-01
NL7907976A (en) 1980-05-02
FR2440386A1 (en) 1980-05-30
JPS5835937B2 (en) 1983-08-05
GB2032901A (en) 1980-05-14
FR2440386B1 (en) 1983-07-08
JPS5560024A (en) 1980-05-06
FI66416B (en) 1984-06-29
SE417104B (en) 1981-02-23
IT1128747B (en) 1986-06-04
ES485483A0 (en) 1980-12-16
CA1125456A (en) 1982-06-15
DE2943205A1 (en) 1980-05-08
IT7950519A0 (en) 1979-10-10

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