FR1409248A - Procédé de purification du gypse résiduaire provenant de la fabrication d'acide phosphorique par l'attaque sulfurique de phosphates naturels - Google Patents

Procédé de purification du gypse résiduaire provenant de la fabrication d'acide phosphorique par l'attaque sulfurique de phosphates naturels

Info

Publication number
FR1409248A
FR1409248A FR965314A FR965314A FR1409248A FR 1409248 A FR1409248 A FR 1409248A FR 965314 A FR965314 A FR 965314A FR 965314 A FR965314 A FR 965314A FR 1409248 A FR1409248 A FR 1409248A
Authority
FR
France
Prior art keywords
purification
manufacture
phosphoric acid
natural phosphates
residual gypsum
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
FR965314A
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.)
Prayon SA
Original Assignee
Prayon SA
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
Priority to BE650119D priority Critical patent/BE650119A/fr
Application filed by Prayon SA filed Critical Prayon SA
Priority to FR965314A priority patent/FR1409248A/fr
Priority to IL23004A priority patent/IL23004A/xx
Priority to OA51471A priority patent/OA01528A/fr
Priority to DE19651567505 priority patent/DE1567505A1/de
Priority to GB7888/65A priority patent/GB1103206A/en
Priority to BE660216D priority patent/BE660216A/xx
Priority to ES0310273A priority patent/ES310273A1/es
Priority to NL656502504A priority patent/NL144896B/xx
Priority to DK103765AA priority patent/DK111201B/da
Priority to AT177765A priority patent/AT264461B/de
Application granted granted Critical
Publication of FR1409248A publication Critical patent/FR1409248A/fr
Priority to US802890*A priority patent/US3580703A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
    • B27D1/083—Presses specially designed for making the manufacture of shaped plywood articles
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B11/00—Calcium sulfate cements
    • C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
FR965314A 1963-07-04 1964-02-27 Procédé de purification du gypse résiduaire provenant de la fabrication d'acide phosphorique par l'attaque sulfurique de phosphates naturels Expired FR1409248A (fr)

Priority Applications (12)

Application Number Priority Date Filing Date Title
BE650119D BE650119A (fr) 1963-07-04
FR965314A FR1409248A (fr) 1963-07-04 1964-02-27 Procédé de purification du gypse résiduaire provenant de la fabrication d'acide phosphorique par l'attaque sulfurique de phosphates naturels
IL23004A IL23004A (en) 1964-02-27 1965-02-17 Process for the purification of residual gypsum produced in the manufacture of phosphoric acid by the reaction of sulphuric acid with natural phosphates
OA51471A OA01528A (fr) 1964-02-27 1965-02-22 Procédé de purification du gypse résiduaire provenant de la fabrication d'acide phosphorique par l'attaque sulfurique de phosphates naturels.
DE19651567505 DE1567505A1 (de) 1964-02-27 1965-02-22 Verfahren zum Reinigen des bei der Herstellung von Phosphorsaeure durch schwefeliges Angreifen natuerlicher Phosphate anfallenden Gipsrestes
GB7888/65A GB1103206A (en) 1964-02-27 1965-02-24 Process for the purification of residual gypsum arising in the manufacture of phosphoric acid by sulphuric reaction of natural phosphates
BE660216D BE660216A (fr) 1964-02-27 1965-02-25
ES0310273A ES310273A1 (es) 1964-02-27 1965-02-26 Procedimiento para la purificacion del yeso residual de la fabricacion de acido fosforico por ataque sulfurico de fosfatos naturales
NL656502504A NL144896B (nl) 1964-02-27 1965-02-26 Werkwijze voor de continue bereiding van fosforzuur en gips, alsmede voorwerpen.
DK103765AA DK111201B (da) 1964-02-27 1965-02-27 Fremgangsmåde til rensning af affaldsgips stammende fra fabrikation af fosforsyre ved indvirkning af svovlsyre på naturlige fosfater.
AT177765A AT264461B (de) 1964-02-27 1965-03-01 Verfahren zum Reinigen von Restgips (CaSO4.2H2O), der bei der Herstellung von Phosphorsäure aus Kalziumphosphatmineralien anfällt
US802890*A US3580703A (en) 1964-02-27 1969-02-27 Process for the purification of residual gypsum formed in the manufacture of phosphoric acid by the action of sulphuric acid on natural phosphates

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1279924X 1963-07-04
FR965314A FR1409248A (fr) 1963-07-04 1964-02-27 Procédé de purification du gypse résiduaire provenant de la fabrication d'acide phosphorique par l'attaque sulfurique de phosphates naturels

Publications (1)

Publication Number Publication Date
FR1409248A true FR1409248A (fr) 1965-08-27

Family

ID=26206150

Family Applications (1)

Application Number Title Priority Date Filing Date
FR965314A Expired FR1409248A (fr) 1963-07-04 1964-02-27 Procédé de purification du gypse résiduaire provenant de la fabrication d'acide phosphorique par l'attaque sulfurique de phosphates naturels

Country Status (1)

Country Link
FR (1) FR1409248A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523754A (en) * 1966-04-02 1970-08-11 Central Glass Co Ltd Process for preparing phosphoric acil
DE1667635B1 (de) * 1967-02-01 1971-12-16 Marchon Products Ltd Verfahren zur herstellung von phosphorsaeure und calcium sulfat hemihydrat
FR2510548A1 (fr) * 1981-07-29 1983-02-04 Bischoff Gasreinigung Procede de preparation de platre

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523754A (en) * 1966-04-02 1970-08-11 Central Glass Co Ltd Process for preparing phosphoric acil
DE1667635B1 (de) * 1967-02-01 1971-12-16 Marchon Products Ltd Verfahren zur herstellung von phosphorsaeure und calcium sulfat hemihydrat
FR2510548A1 (fr) * 1981-07-29 1983-02-04 Bischoff Gasreinigung Procede de preparation de platre

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