FI47343C - Procedure for calcination of gypsum. - Google Patents

Procedure for calcination of gypsum.

Info

Publication number
FI47343C
FI47343C FI201562A FI201562A FI47343C FI 47343 C FI47343 C FI 47343C FI 201562 A FI201562 A FI 201562A FI 201562 A FI201562 A FI 201562A FI 47343 C FI47343 C FI 47343C
Authority
FI
Finland
Prior art keywords
calcination
gypsum
procedure
Prior art date
Application number
FI201562A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI47343B (en
Inventor
Blair
Original Assignee
Bpb Industries Ltd
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 Bpb Industries Ltd filed Critical Bpb Industries Ltd
Publication of FI47343B publication Critical patent/FI47343B/fi
Application granted granted Critical
Publication of FI47343C publication Critical patent/FI47343C/en

Links

Classifications

    • 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
    • C01F11/466—Conversion of one form of calcium sulfate to another
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
    • B01J6/001—Calcining
    • B01J6/004—Calcining using hot gas streams in which the material is moved
    • 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
    • C04B11/02—Methods and apparatus for dehydrating gypsum
    • C04B11/028—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained
    • 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
    • C04B11/02—Methods and apparatus for dehydrating gypsum
    • C04B11/028—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained
    • C04B11/0281—Kettles; Marmites; Autoclaves

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Baking, Grill, Roasting (AREA)
FI201562A 1961-11-13 1962-11-10 Procedure for calcination of gypsum. FI47343C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15296861A 1961-11-13 1961-11-13

Publications (2)

Publication Number Publication Date
FI47343B FI47343B (en) 1973-07-31
FI47343C true FI47343C (en) 1973-11-12

Family

ID=22545214

Family Applications (1)

Application Number Title Priority Date Filing Date
FI201562A FI47343C (en) 1961-11-13 1962-11-10 Procedure for calcination of gypsum.

Country Status (10)

Country Link
BE (1) BE624555A (en)
CH (1) CH394926A (en)
DE (1) DE1258321B (en)
DK (1) DK115723B (en)
ES (1) ES282399A1 (en)
FI (1) FI47343C (en)
GB (1) GB1018464A (en)
LU (1) LU42643A1 (en)
NL (2) NL141481B (en)
SE (1) SE323614B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1488665A (en) * 1973-11-27 1977-10-12 Bpb Industries Ltd Calcining calcium sulphate dihydrate
US4161390A (en) * 1977-06-16 1979-07-17 United States Gypsum Company Calcining kettle having multi-pass heating system
GB2001157B (en) * 1977-07-15 1982-07-07 Coal Ind Improvements in or relating to fluidised beds
US4188186A (en) * 1978-06-22 1980-02-12 Combustion Engineering, Inc. Automatic calcining kettle
ZA793953B (en) * 1978-08-08 1980-08-27 Coal Industry Patents Ltd Heat treatment of material
IE49127B1 (en) * 1979-01-08 1985-08-07 Bpb Industries Ltd Calcination method and apparatus
US4533528A (en) * 1983-07-15 1985-08-06 United States Gypsum Company Process for continuously calcining gypsum to low dispersed consistency stucco
US4626199A (en) * 1985-04-25 1986-12-02 United States Gypsum Company Submerged combustion calcination
GB8625964D0 (en) * 1986-10-30 1986-12-03 Bpb Industries Plc Calcination apparatus
US5743954A (en) * 1995-02-02 1998-04-28 United States Gypsum Company Method for continuous refractoryless calcining of gypsum
US5743728A (en) * 1995-08-15 1998-04-28 Usg Corporation Method and system for multi-stage calcining of gypsum to produce an anhydrite product
US7175426B2 (en) 2004-02-27 2007-02-13 United States Gypsum Company High efficiency refractoryless kettle
US7434980B2 (en) 2004-02-27 2008-10-14 United States Gypsum Company Swinging agitator for a gypsum calcining apparatus and the like
BRPI0905983A2 (en) * 2008-02-19 2015-06-30 United States Gypsum Co Method and apparatus for calcination of pressurized plaster

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485317A (en) * 1943-01-29 1949-10-18 Standard Oil Dev Co Method of manufacturing plaster of paris
GB610439A (en) * 1946-04-05 1948-10-15 Reginald George Franklin Improvements in and relating to the dehydration of particulate calcium sulphate
FR928217A (en) * 1946-05-17 1947-11-21 System and method for drying or heat treatment
GB855131A (en) * 1955-12-01 1960-11-30 Smidth & Co As F L Improvements relating to apparatus and installations for the cooling of cement or other material which can be fluidised

Also Published As

Publication number Publication date
ES282399A1 (en) 1963-02-01
NL285104A (en)
CH394926A (en) 1965-06-30
GB1018464A (en) 1966-01-26
SE323614B (en) 1970-05-04
DE1258321B (en) 1968-01-04
BE624555A (en) 1963-03-01
NL141481B (en) 1974-03-15
FI47343B (en) 1973-07-31
DK115723B (en) 1969-11-03
LU42643A1 (en) 1963-01-05

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