USB366402I5 - - Google Patents

Info

Publication number
USB366402I5
USB366402I5 US36640273A USB366402I5 US B366402 I5 USB366402 I5 US B366402I5 US 36640273 A US36640273 A US 36640273A US B366402 I5 USB366402 I5 US B366402I5
Authority
US
United States
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.)
Pending
Application number
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 filed Critical
Priority to US366402A priority Critical patent/US3928053A/en
Publication of USB366402I5 publication Critical patent/USB366402I5/en
Priority to US05/602,927 priority patent/US3998596A/en
Application granted granted Critical
Publication of US3928053A publication Critical patent/US3928053A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/08—Acids or salts thereof
    • C04B22/14—Acids or salts thereof containing sulfur in the anion, e.g. sulfides
    • C04B22/142—Sulfates
    • C04B22/143—Calcium-sulfate
    • C04B22/144—Phosphogypsum
US366402A 1973-06-04 1973-06-04 Method of improving the grade of phosphoric acid by-product gypsum to be used as an inhibitor for cement setting and its apparatus Expired - Lifetime US3928053A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US366402A US3928053A (en) 1973-06-04 1973-06-04 Method of improving the grade of phosphoric acid by-product gypsum to be used as an inhibitor for cement setting and its apparatus
US05/602,927 US3998596A (en) 1973-06-04 1975-08-08 Apparatus for treating by-product gypsum to be used as an inhibitor for setting of cement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US366402A US3928053A (en) 1973-06-04 1973-06-04 Method of improving the grade of phosphoric acid by-product gypsum to be used as an inhibitor for cement setting and its apparatus

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/602,927 Division US3998596A (en) 1973-06-04 1975-08-08 Apparatus for treating by-product gypsum to be used as an inhibitor for setting of cement

Publications (2)

Publication Number Publication Date
USB366402I5 true USB366402I5 (en) 1975-01-28
US3928053A US3928053A (en) 1975-12-23

Family

ID=23442861

Family Applications (1)

Application Number Title Priority Date Filing Date
US366402A Expired - Lifetime US3928053A (en) 1973-06-04 1973-06-04 Method of improving the grade of phosphoric acid by-product gypsum to be used as an inhibitor for cement setting and its apparatus

Country Status (1)

Country Link
US (1) US3928053A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7585485B2 (en) * 2006-07-03 2009-09-08 Tripoliven, C.A. Process for the physiochemical conditioning of chemical gypsum or phospho-gypsum for use in formulation for cement and other construction materials

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047447A (en) * 1957-11-25 1962-07-31 Allied Chem Method for bonding gypsum to paper
US3159497A (en) * 1960-10-25 1964-12-01 Onoda Cement Co Ltd Method of improving the grade of byproduct gypsum obtained in carrying out a wet process for production of phosphoric acid
US3199997A (en) * 1962-11-13 1965-08-10 United States Gypsum Co Process for producing calcined products from by-product gypsum
US3445323A (en) * 1966-01-19 1969-05-20 Adolph Schnabel Manufacture of plasterboard from synthetic gypsum
US3489583A (en) * 1964-02-24 1970-01-13 Ici Ltd Stabilization of calcium sulphate alpha hemi-hydrate slurry
US3547581A (en) * 1967-04-07 1970-12-15 Chemie Linz Ag Process for removing fluorine and phosphate from gypsum produced in the manufacture of phosphoric acid

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047447A (en) * 1957-11-25 1962-07-31 Allied Chem Method for bonding gypsum to paper
US3159497A (en) * 1960-10-25 1964-12-01 Onoda Cement Co Ltd Method of improving the grade of byproduct gypsum obtained in carrying out a wet process for production of phosphoric acid
US3199997A (en) * 1962-11-13 1965-08-10 United States Gypsum Co Process for producing calcined products from by-product gypsum
US3489583A (en) * 1964-02-24 1970-01-13 Ici Ltd Stabilization of calcium sulphate alpha hemi-hydrate slurry
US3445323A (en) * 1966-01-19 1969-05-20 Adolph Schnabel Manufacture of plasterboard from synthetic gypsum
US3547581A (en) * 1967-04-07 1970-12-15 Chemie Linz Ag Process for removing fluorine and phosphate from gypsum produced in the manufacture of phosphoric acid

Also Published As

Publication number Publication date
US3928053A (en) 1975-12-23

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