ZA735661B - Improvements in the calcination of gypsum - Google Patents

Improvements in the calcination of gypsum

Info

Publication number: ZA735661B
Authority: ZA; South Africa
Prior art keywords: calcination; gypsum
Prior art date: 1972-09-01

Application number

ZA735661A

Other languages

English (en)

Inventor

F Flood

C Court

N Mcloughlin

K Jones

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.)

1972-09-01

Filing date

1973-08-20

Publication date

1974-07-31

1973-08-20 Application filed by Bpb Industries Ltd filed Critical Bpb Industries Ltd

1974-07-31 Publication of ZA735661B publication Critical patent/ZA735661B/xx

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
- 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
- C04B11/024—Ingredients added before, or during, the calcining process, e.g. calcination modifiers

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Engineering & Computer Science (AREA)
Ceramic Engineering (AREA)
Materials Engineering (AREA)
Structural Engineering (AREA)
Life Sciences & Earth Sciences (AREA)
Geology (AREA)
Inorganic Chemistry (AREA)
Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Building Environments (AREA)

ZA735661A 1972-09-01 1973-08-20 Improvements in the calcination of gypsum ZA735661B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB4074872A GB1438632A (en)	1972-09-01	1972-09-01	Calcination of gypsum

Publications (1)

Publication Number	Publication Date
ZA735661B true ZA735661B (en)	1974-07-31

Family

ID=10416421

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZA735661A ZA735661B (en)	1972-09-01	1973-08-20	Improvements in the calcination of gypsum

Country Status (20)

Country	Link
US (1)	US3898316A (fr)
JP (1)	JPS4993410A (fr)
AT (1)	AT339806B (fr)
AU (1)	AU477312B2 (fr)
BE (1)	BE804162A (fr)
CA (1)	CA999118A (fr)
CH (1)	CH575352A5 (fr)
DE (1)	DE2343851A1 (fr)
DK (1)	DK148630C (fr)
ES (1)	ES418262A1 (fr)
FR (1)	FR2197817B1 (fr)
GB (1)	GB1438632A (fr)
IE (1)	IE38093B1 (fr)
IN (1)	IN140347B (fr)
IT (1)	IT995242B (fr)
LU (1)	LU68331A1 (fr)
NL (1)	NL7312078A (fr)
NO (1)	NO136146C (fr)
SE (1)	SE382627B (fr)
ZA (1)	ZA735661B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4744961A (en) *	1985-04-25	1988-05-17	United States Gypsum Company	Submerged combustion calcination
WO1988004648A1 (fr) *	1986-12-18	1988-06-30	Hoelter Heinz	Procede de recuperation in situ de semi-hydrate de sulfate de calcium et/ou de sulfate de calcium (anhydrite) provenant des installations de lavage d'une usine de desulfuration par voie humide des gaz brules
DE3709393A1 (de) *	1987-03-21	1988-09-29	Saarbergwerke Ag	Verfahren zur umwandlung von calciumsulfatdihydrat in (alpha)-halbhydrat
EP2061731B1 (fr) *	2006-12-20	2020-04-15	Gypsum Technologies Inc.	Procédé de traitement du semi-hydrate de sulfate de calcium
GB0708382D0 (en) *	2007-05-01	2007-06-06	Bpb Plc	Gypsum based compositions
US20150376063A1 (en) *	2014-06-27	2015-12-31	Boral Ip Holdings (Australia) Pty Limited	Ultra-Lightweight Gypsum Wallboard
MX2021011578A (es)	2019-03-29	2021-10-13	Goodwin Plc	Polvo refractario para moldes a la cera perdida.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1370581A (en) *	1920-03-08	1921-03-08	United States Gypsum Co	Process of aging calcined gypsum products and product thereof
US1960538A (en) *	1932-03-25	1934-05-29	Certain Teed Prod Corp	Process of producing cementitious material

1972
- 1972-09-01 GB GB4074872A patent/GB1438632A/en not_active Expired
1973
- 1973-08-16 CA CA178,929A patent/CA999118A/en not_active Expired
- 1973-08-16 IE IE1414/73A patent/IE38093B1/xx unknown
- 1973-08-20 ZA ZA735661A patent/ZA735661B/xx unknown
- 1973-08-24 AU AU59598/73A patent/AU477312B2/en not_active Expired
- 1973-08-27 ES ES418262A patent/ES418262A1/es not_active Expired
- 1973-08-28 DK DK472673A patent/DK148630C/da not_active IP Right Cessation
- 1973-08-28 US US392389A patent/US3898316A/en not_active Expired - Lifetime
- 1973-08-29 BE BE135061A patent/BE804162A/fr not_active IP Right Cessation
- 1973-08-29 CH CH1238373A patent/CH575352A5/xx not_active IP Right Cessation
- 1973-08-30 IT IT28403/73A patent/IT995242B/it active
- 1973-08-30 IN IN1995/CAL/73A patent/IN140347B/en unknown
- 1973-08-30 DE DE19732343851 patent/DE2343851A1/de active Pending
- 1973-08-30 FR FR7331474A patent/FR2197817B1/fr not_active Expired
- 1973-08-30 SE SE7311825A patent/SE382627B/xx unknown
- 1973-08-30 NO NO3416/73A patent/NO136146C/no unknown
- 1973-08-30 LU LU68331A patent/LU68331A1/xx unknown
- 1973-08-31 JP JP48098169A patent/JPS4993410A/ja active Pending
- 1973-08-31 NL NL7312078A patent/NL7312078A/xx active Search and Examination
- 1973-09-03 AT AT764673A patent/AT339806B/de not_active IP Right Cessation

Also Published As

Publication number	Publication date
DK148630C (da)	1986-01-20
ATA764673A (de)	1977-02-15
US3898316A (en)	1975-08-05
IN140347B (fr)	1976-10-23
JPS4993410A (fr)	1974-09-05
DK148630B (da)	1985-08-19
FR2197817A1 (fr)	1974-03-29
NO136146B (no)	1977-04-18
LU68331A1 (fr)	1973-11-12
DE2343851A1 (de)	1974-03-21
NO136146C (no)	1977-07-27
ES418262A1 (es)	1976-03-01
AU477312B2 (en)	1976-10-21
SE382627B (sv)	1976-02-09
GB1438632A (en)	1976-06-09
NL7312078A (fr)	1974-03-05
AU5959873A (en)	1975-02-27
CH575352A5 (fr)	1976-05-14
BE804162A (fr)	1973-12-17
IE38093B1 (en)	1977-12-21
CA999118A (en)	1976-11-02
FR2197817B1 (fr)	1980-01-11
IT995242B (it)	1975-11-10
IE38093L (en)	1974-03-01
AT339806B (de)	1977-11-10

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