[go: up one dir, main page]

FR1409248A - Process for the purification of residual gypsum from the manufacture of phosphoric acid by sulfuric attack of natural phosphates - Google Patents

Process for the purification of residual gypsum from the manufacture of phosphoric acid by sulfuric attack of natural phosphates

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
French (fr)
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/en
Priority to IL23004A priority patent/IL23004A/en
Priority to OA51471A priority patent/OA01528A/en
Priority to DE19651567505 priority patent/DE1567505A1/en
Priority to GB7888/65A priority patent/GB1103206A/en
Priority to BE660216D priority patent/BE660216A/xx
Priority to NL656502504A priority patent/NL144896B/en
Priority to ES0310273A priority patent/ES310273A1/en
Priority to DK103765AA priority patent/DK111201B/en
Priority to AT177765A priority patent/AT264461B/en
Application granted granted Critical
Publication of FR1409248A publication Critical patent/FR1409248A/en
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 Process for the purification of residual gypsum from the manufacture of phosphoric acid by sulfuric attack of natural phosphates Expired FR1409248A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
BE650119D BE650119A (en) 1963-07-04
FR965314A FR1409248A (en) 1963-07-04 1964-02-27 Process for the purification of residual gypsum from the manufacture of phosphoric acid by sulfuric attack of natural phosphates
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 (en) 1964-02-27 1965-02-22 Process for the purification of residual gypsum from the manufacture of phosphoric acid by the sulfuric attack of natural phosphates.
DE19651567505 DE1567505A1 (en) 1964-02-27 1965-02-22 Process for cleaning the gypsum residue that occurs during the production of phosphoric acid due to the sulphurous attack on natural phosphates
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 (en) 1964-02-27 1965-02-25
NL656502504A NL144896B (en) 1964-02-27 1965-02-26 PROCESS FOR THE CONTINUOUS PREPARATION OF PHOSPHORIC ACID AND GIPS, AND ARTICLES.
ES0310273A ES310273A1 (en) 1964-02-27 1965-02-26 Process for the purification of residual gypsum formed in the manufacture of phosphoric acid by the action of sulphuric acid on natural phosphates
DK103765AA DK111201B (en) 1964-02-27 1965-02-27 Method for purifying waste gypsum derived from the manufacture of phosphoric acid by the action of sulfuric acid on natural phosphates.
AT177765A AT264461B (en) 1964-02-27 1965-03-01 Process for cleaning residual gypsum (CaSO4.2H2O) that arises from the production of phosphoric acid from calcium phosphate minerals
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 (en) 1963-07-04 1964-02-27 Process for the purification of residual gypsum from the manufacture of phosphoric acid by sulfuric attack of natural phosphates

Publications (1)

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

Family

ID=26206150

Family Applications (1)

Application Number Title Priority Date Filing Date
FR965314A Expired FR1409248A (en) 1963-07-04 1964-02-27 Process for the purification of residual gypsum from the manufacture of phosphoric acid by sulfuric attack of natural phosphates

Country Status (1)

Country Link
FR (1) FR1409248A (en)

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 (en) * 1967-02-01 1971-12-16 Marchon Products Ltd PROCESS FOR THE PREPARATION OF PHOSPHORIC ACID AND CALCIUM SULPHATE HEMIHYDRATE
FR2510548A1 (en) * 1981-07-29 1983-02-04 Bischoff Gasreinigung PLASTER PREPARATION PROCESS

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 (en) * 1967-02-01 1971-12-16 Marchon Products Ltd PROCESS FOR THE PREPARATION OF PHOSPHORIC ACID AND CALCIUM SULPHATE HEMIHYDRATE
FR2510548A1 (en) * 1981-07-29 1983-02-04 Bischoff Gasreinigung PLASTER PREPARATION PROCESS

Similar Documents

Publication Publication Date Title
FR1506968A (en) Production process for phosphoric acid
FR1543753A (en) Phosphoric acid production process
FR1350642A (en) Process for the wet manufacture of phosphoric acid by the calcium sulfate hemihydrate-dihydrate method
FR1451923A (en) Process for the manufacture of sulfuric acid
OA01528A (en) Process for the purification of residual gypsum from the manufacture of phosphoric acid by the sulfuric attack of natural phosphates.
FR88940E (en) Phosphoric acid purification process
FR1348923A (en) Sulfuric acid production process
FR1409248A (en) Process for the purification of residual gypsum from the manufacture of phosphoric acid by sulfuric attack of natural phosphates
FR1427531A (en) Phosphoric acid purification process
FR1292338A (en) Wet process for obtaining pure phosphoric acid
CH476637A (en) Production process for phosphoric acid
FR1509607A (en) Phosphoric acid purification process
FR1534672A (en) Production process for phosphoric acid
CH417548A (en) Process for the continuous manufacture of phosphoric acid
FR1434190A (en) Process for manufacturing purified phosphoric acid
OA05048A (en) Process for the purification of phosphoric acid.
FR1247343A (en) Process for the preparation of mineral phosphates intended for the manufacture of phosphoric acid by the wet process
FR1387492A (en) Phosphoric acid purification process
FR1305934A (en) Process for the purification of dilute technical sulfuric acid
FR1396649A (en) Process for the production of esters of transchrysanthemum acid
FR1403952A (en) Manufacturing process for coumaranylic esters of nu-methyl-carbamic acid
FR92917E (en) A method of purifying phosphoric acid.
FR1418568A (en) Production process for phosphoric acid
FR1487428A (en) Production process for phosphoric acid
FR65233E (en) Concentrated sulfuric acid purification process