GB1434784A - Treatment of synthetic crude gypsum - Google Patents

Treatment of synthetic crude gypsum

Info

Publication number
GB1434784A
GB1434784A GB1363873A GB1363873A GB1434784A GB 1434784 A GB1434784 A GB 1434784A GB 1363873 A GB1363873 A GB 1363873A GB 1363873 A GB1363873 A GB 1363873A GB 1434784 A GB1434784 A GB 1434784A
Authority
GB
United Kingdom
Prior art keywords
treatment
gypsum
synthetic crude
april
calcium hydroxide
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
GB1363873A
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.)
Fels Werke Peine Salzgitter
Original Assignee
Fels Werke Peine Salzgitter
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 Fels Werke Peine Salzgitter filed Critical Fels Werke Peine Salzgitter
Publication of GB1434784A publication Critical patent/GB1434784A/en
Expired 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
    • C04B11/02—Methods and apparatus for dehydrating gypsum
    • 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
    • C01F11/468—Purification of calcium sulfates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Physical Water Treatments (AREA)
  • Compounds Of Iron (AREA)
GB1363873A 1972-04-20 1973-04-20 Treatment of synthetic crude gypsum Expired GB1434784A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2219223A DE2219223A1 (de) 1972-04-20 1972-04-20 Verfahren zur aufbereitung von synthese-rohgips

Publications (1)

Publication Number Publication Date
GB1434784A true GB1434784A (en) 1976-05-05

Family

ID=5842615

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1363873A Expired GB1434784A (en) 1972-04-20 1973-04-20 Treatment of synthetic crude gypsum

Country Status (5)

Country Link
US (1) US3847766A (enExample)
JP (1) JPS4935298A (enExample)
DE (1) DE2219223A1 (enExample)
GB (1) GB1434784A (enExample)
ZA (1) ZA732620B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2337514A (en) * 1998-05-22 1999-11-24 Mark Youds Crystalline structure enhancer; calcining gypsum

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4388292A (en) * 1981-12-14 1983-06-14 United States Gypsum Company Process for reducing radioactive contamination in phosphogypsum
US4421731A (en) * 1982-09-29 1983-12-20 United States Gypsum Company Process for purifying phosphogypsum
ZA989823B (en) * 1998-10-28 1999-07-28 Dirk Guustaaf Mantel Treatment of phospho gypsum
US6822033B2 (en) 2001-11-19 2004-11-23 United States Gypsum Company Compositions and methods for treating set gypsum
US8070895B2 (en) 2007-02-12 2011-12-06 United States Gypsum Company Water resistant cementitious article and method for preparing same
US8329308B2 (en) 2009-03-31 2012-12-11 United States Gypsum Company Cementitious article and method for preparing the same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1713868A (en) * 1928-07-18 1929-05-21 Rumford Chemical Works Process of treating acidulous by-product calcium sulphate
US2251959A (en) * 1935-12-27 1941-08-12 Submarine Signal Co Apparatus for the production of finely divided substances

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2337514A (en) * 1998-05-22 1999-11-24 Mark Youds Crystalline structure enhancer; calcining gypsum
GB2337514B (en) * 1998-05-22 2000-04-12 Mark Youds Crystalline structure enhancer

Also Published As

Publication number Publication date
ZA732620B (en) 1974-04-24
DE2219223A1 (de) 1973-10-25
JPS4935298A (enExample) 1974-04-01
US3847766A (en) 1974-11-12

Similar Documents

Publication Publication Date Title
GB1269223A (en) Waste treatment for phosphate removal
GB1361212A (en) Control method and apparatus for a machine or process having dead time
GB1434784A (en) Treatment of synthetic crude gypsum
CA930377A (en) Process for the production of acrylamide and methacrylamide
GB1478068A (en) Piezoelectric transducer assemblies and methods of generating acoustical radiation patterns
FR2234221B1 (enExample)
ES313072A1 (es) Procedimiento para la produccion del antibiotico rhi 12-648.
ES380545A1 (es) Proceso de produccion de una nueva sustancia biologicamenteactiva, la pepstatina.
ES2058372T3 (es) Procedimiento para la obtencion de esteres del acido 5-cloro-3-clorosulfonil-2-tiofenocarboxilico.
CA981700A (en) Production of 2-chlorobutadiene-1,3
JPS51133488A (en) Process for producing antibiotics enzymatically
GB1494940A (en) Process for the preparation of an octadienenitrile compound
GB1313241A (en) Process for the production of tetronic acid
ES396334A1 (es) Procedimiento para la escision enzimatica de la lactosa contenida en la leche o derivados de la misma.
BE767940A (fr) Procede de preparation du bouillon de culture de macrochampignons, notamment de champignons alimentaires pour la production de l'inoculant industriel et pour la culture
GB1362108A (en) Process for preparing hydroxy-l-proline or n-acetyl-hydroxy- l-proline from hydrolysed gelatin
GB626557A (en) Production of a compost for the culture of plants
GEP19940148B (en) Method for Preparation of Organic and Mineral Fertilizers
GB1473283A (en) Apparatus for expanding borax
SU1068406A1 (ru) Способ получени комплексного удобрени
GB1317735A (en) Hydrothermal transformation of kaolin
FR2151808A5 (en) Synthetic gypsum rock processing - by tribochemical effect in presence of calcium hydroxide
GB1304259A (enExample)
GB728493A (en) Improvements in or relating to multi-cylinder hydraulic reciprocating pumps
GB1281725A (en) Process of preparing catalytically active material

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee