SU833521A1 - Method of stabilizing calcium sulfate semihydrate - Google Patents

Method of stabilizing calcium sulfate semihydrate Download PDF

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Publication number
SU833521A1
SU833521A1 SU792804687A SU2804687A SU833521A1 SU 833521 A1 SU833521 A1 SU 833521A1 SU 792804687 A SU792804687 A SU 792804687A SU 2804687 A SU2804687 A SU 2804687A SU 833521 A1 SU833521 A1 SU 833521A1
Authority
SU
USSR - Soviet Union
Prior art keywords
calcium sulfate
hexametaphosphate
stabilizer
stabilizing calcium
branched
Prior art date
Application number
SU792804687A
Other languages
Russian (ru)
Inventor
Василий Михайлович Борисов
Всеволод Николаевич Рудин
Георгий Сергеевич Бочкарев
Михаил Васильевич Бондаренко
Ариадна Борисовна Катунина
Original Assignee
Предприятие П/Я В-8830
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 Предприятие П/Я В-8830 filed Critical Предприятие П/Я В-8830
Priority to SU792804687A priority Critical patent/SU833521A1/en
Application granted granted Critical
Publication of SU833521A1 publication Critical patent/SU833521A1/en

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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

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Description

(54) СПОСОБ СТАБИЛИЗАЦИИ ПОЛУГИДРАТА СУЛЬФАТА КАЛЫШЯ(54) METHOD OF STABILIZATION OF SULFATE HALF HALATE

Claims (2)

Формула изобретенияClaim 1. Способ стабилизации полугидрата сульфата кальция в производстве экстракционной фосфорной кислоты путем добавления водных растворов полифосфатов щелочных металлов в качестве стабилизатора, отличающийся тем, что, с целью снижения адгезионных свойств целевого продукта и исключения потерь стабилизатора, в качестве последнего используют гексаметафосфат, представляющий собой смесь линейных и разветвленных полифосфатов с циклическими метафосфатами и разветвленными изометафосфатами.1. The method of stabilization of calcium sulfate hemihydrate in the production of extraction phosphoric acid by adding aqueous solutions of alkali metal polyphosphates as a stabilizer, characterized in that, in order to reduce the adhesive properties of the target product and eliminate stabilizer losses, hexametaphosphate, which is a mixture of linear and branched polyphosphates with cyclic metaphosphates and branched isomethaphosphates. 2. Способ по п.1, отличающийся тем, что гексаметафосфат вводят при перемешивании со скоростью 5-15 м/с.2. The method according to claim 1, characterized in that the hexametaphosphate is introduced with stirring at a speed of 5-15 m / s.
SU792804687A 1979-07-25 1979-07-25 Method of stabilizing calcium sulfate semihydrate SU833521A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU792804687A SU833521A1 (en) 1979-07-25 1979-07-25 Method of stabilizing calcium sulfate semihydrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU792804687A SU833521A1 (en) 1979-07-25 1979-07-25 Method of stabilizing calcium sulfate semihydrate

Publications (1)

Publication Number Publication Date
SU833521A1 true SU833521A1 (en) 1981-05-30

Family

ID=20844202

Family Applications (1)

Application Number Title Priority Date Filing Date
SU792804687A SU833521A1 (en) 1979-07-25 1979-07-25 Method of stabilizing calcium sulfate semihydrate

Country Status (1)

Country Link
SU (1) SU833521A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6342284B1 (en) 1997-08-21 2002-01-29 United States Gysum Company Gypsum-containing product having increased resistance to permanent deformation and method and composition for producing it
US6632550B1 (en) 1997-08-21 2003-10-14 United States Gypsum Company Gypsum-containing product having increased resistance to permanent deformation and method and composition for producing it
US7758980B2 (en) 1997-08-21 2010-07-20 United States Gypsum Company Gypsum-containing board and tile, and method for producing same

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6342284B1 (en) 1997-08-21 2002-01-29 United States Gysum Company Gypsum-containing product having increased resistance to permanent deformation and method and composition for producing it
US6632550B1 (en) 1997-08-21 2003-10-14 United States Gypsum Company Gypsum-containing product having increased resistance to permanent deformation and method and composition for producing it
US6800131B2 (en) 1997-08-21 2004-10-05 United States Gypsum Company Gypsum-containing board and tile, and method for producing gypsum-containing board and tile
US7244304B2 (en) 1997-08-21 2007-07-17 United States Gypsum Company Gypsum-containing board and tile, and method for producing same
US7425236B2 (en) 1997-08-21 2008-09-16 United States Gypsum Company Gypsum-containing board and tile, and method for producing same
US7758980B2 (en) 1997-08-21 2010-07-20 United States Gypsum Company Gypsum-containing board and tile, and method for producing same
US7964034B2 (en) 1997-08-21 2011-06-21 United States Gypsum Company Gypsum-containing product and method for producing same
US8142914B2 (en) 1997-08-21 2012-03-27 United States Gypsum Company Gypsum-containing product and gypsum board
US8303709B2 (en) 1997-08-21 2012-11-06 United States Gypsum Company Gypsum-containing product
US8500904B2 (en) 1997-08-21 2013-08-06 United States Gypsum Company Gypsum-containing product
US8974597B2 (en) 1997-08-21 2015-03-10 United States Gypsum Company Gypsum-containing product

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