BE798628A - PROCESS FOR PURIFYING THE CALCIUM SULPHATE OBTAINED AS RESIDUE - Google Patents

PROCESS FOR PURIFYING THE CALCIUM SULPHATE OBTAINED AS RESIDUE

Info

Publication number
BE798628A
BE798628A BE130344A BE130344A BE798628A BE 798628 A BE798628 A BE 798628A BE 130344 A BE130344 A BE 130344A BE 130344 A BE130344 A BE 130344A BE 798628 A BE798628 A BE 798628A
Authority
BE
Belgium
Prior art keywords
purifying
residue
calcium sulphate
sulphate obtained
calcium
Prior art date
Application number
BE130344A
Other languages
French (fr)
Original Assignee
Unie Van Kunstmestfab Bv
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 Unie Van Kunstmestfab Bv filed Critical Unie Van Kunstmestfab Bv
Publication of BE798628A publication Critical patent/BE798628A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
    • B03B9/061—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/46—Sulfates
    • C01F11/468—Purification of calcium sulfates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B2230/00—Specific aspects relating to the whole B07B subclass
    • B07B2230/01—Wet separation
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
BE130344A 1972-04-26 1973-04-24 PROCESS FOR PURIFYING THE CALCIUM SULPHATE OBTAINED AS RESIDUE BE798628A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1948972A GB1394734A (en) 1972-04-26 1972-04-26 Process for the purification of waste product calcium sulphate

Publications (1)

Publication Number Publication Date
BE798628A true BE798628A (en) 1973-10-24

Family

ID=10130219

Family Applications (1)

Application Number Title Priority Date Filing Date
BE130344A BE798628A (en) 1972-04-26 1973-04-24 PROCESS FOR PURIFYING THE CALCIUM SULPHATE OBTAINED AS RESIDUE

Country Status (5)

Country Link
BE (1) BE798628A (en)
DE (1) DE2320645A1 (en)
FR (1) FR2182002B1 (en)
GB (1) GB1394734A (en)
NL (1) NL7305679A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146568A (en) 1977-08-01 1979-03-27 Olin Corporation Process for reducing radioactive contamination in waste product gypsum
DE3021839A1 (en) * 1980-06-11 1981-12-24 Chemische Werke Hüls AG, 4370 Marl METHOD FOR REDUCING THE RADIOACTIVITY OF CALCIUM SULFATE MADE FROM PHOSPHORITES
NL8006946A (en) * 1980-12-20 1982-07-16 Stamicarbon METHOD FOR RECOVERING PRACTICAL RADIUM-FREE CALCIUM SULFATE, YTTRIUM AND LANTHANIDES, AND OBTAINED CALCIUM SULFATE, YTTRIUM AND LANTHANIDES OBTAINED BY THIS PROCESS.
US4388292A (en) * 1981-12-14 1983-06-14 United States Gypsum Company Process for reducing radioactive contamination in phosphogypsum
US4424196A (en) 1982-06-29 1984-01-03 United States Gypsum Company Phosphohemihydrate process for purification of gypsum
US4421731A (en) * 1982-09-29 1983-12-20 United States Gypsum Company Process for purifying phosphogypsum
RU2031842C1 (en) * 1991-07-01 1995-03-27 Юрий Георгиевич Горный Method of rare-earth elements extraction from phosphate ore

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE563616A (en) * 1956-12-31
DE1235211B (en) * 1965-07-06 1967-02-23 Giulini Gmbh Geb Process for the production of plaster of paris from calcium sulphate dihydrate resulting from the production of phosphoric acid
GB1202893A (en) * 1967-02-09 1970-08-19 Fisons Ltd Calcium sulphate hemihydrate

Also Published As

Publication number Publication date
FR2182002A1 (en) 1973-12-07
DE2320645A1 (en) 1973-11-08
FR2182002B1 (en) 1977-07-29
NL7305679A (en) 1973-10-30
GB1394734A (en) 1975-05-21

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: UNIE VAN KUNSTMESTFABRIEKEN B.V.

Effective date: 19840424