SU1701668A1 - Method of producing calcium sulfate (@@@-half-water) from phosphogypsum - Google Patents
Method of producing calcium sulfate (@@@-half-water) from phosphogypsum Download PDFInfo
- Publication number
- SU1701668A1 SU1701668A1 SU894714869A SU4714869A SU1701668A1 SU 1701668 A1 SU1701668 A1 SU 1701668A1 SU 894714869 A SU894714869 A SU 894714869A SU 4714869 A SU4714869 A SU 4714869A SU 1701668 A1 SU1701668 A1 SU 1701668A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phosphogypsum
- calcium sulfate
- water
- producing calcium
- neutralizer
- Prior art date
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
Изобретение относитс к промышленности строительных материалов и может использоватьс дл получени /3 -полугидратв сульфата кальци из фосфогипса.The invention relates to the building materials industry and can be used to obtain p-hemihydrate calcium sulphate from phosphogypsum.
Цель изобретени - повышение прочности .The purpose of the invention is to increase the strength.
Пример. Фосфогипс Алмалыкского химического завода подвергали репульпа- ции в растворе, содержащем хлорид бари в количестве 0,125-1,0% от массы сухого фосфогипса. Обработанную смесь влажностью 30-40% высушивали до достижени влажности 1-3%. Высушеннный продукт дегидратировали при температуре 200°С в течение 2 ч до получени /3-полугидрата сульфата кальци . Полученное в жущее затвор ли водой и испытывали по ГОСТ 23789-79.Example. The phosphogypsum of the Almalyk chemical plant was repulped in a solution containing barium chloride in an amount of 0.125-1.0% by weight of dry phosphogypsum. The treated mixture with humidity of 30-40% was dried until reaching a moisture content of 1-3%. The dried product was dehydrated at 200 ° C for 2 hours to give calcium sulfate 3-hemihydrate. The resulting water was shut and tested according to GOST 23789-79.
Состав раствора и свойства ft -полугидрата сульфата кальци приведены в таблице .The composition of the solution and the properties of ft-calcium sulfate hemihydrate are given in the table.
Изготовление в жущего по предлагаемому способу позвол ет повысить его прочность при сжатии на 12,9-69,4%, а при изгибе на 20,0-70,0%.Manufacturing a tamper by the proposed method allows to increase its compressive strength by 12.9-69.4%, and during bending by 20.0-70.0%.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU894714869A SU1701668A1 (en) | 1989-07-06 | 1989-07-06 | Method of producing calcium sulfate (@@@-half-water) from phosphogypsum |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU894714869A SU1701668A1 (en) | 1989-07-06 | 1989-07-06 | Method of producing calcium sulfate (@@@-half-water) from phosphogypsum |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1701668A1 true SU1701668A1 (en) | 1991-12-30 |
Family
ID=21458872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU894714869A SU1701668A1 (en) | 1989-07-06 | 1989-07-06 | Method of producing calcium sulfate (@@@-half-water) from phosphogypsum |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1701668A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LT5939B (en) | 2011-07-15 | 2013-05-27 | Vilniaus Gedimino technikos universitetas | Structural thermal insulation composite from local technogenic waste |
-
1989
- 1989-07-06 SU SU894714869A patent/SU1701668A1/en active
Non-Patent Citations (1)
Title |
---|
Авторское свидетельство СССР № 1375605. кл. С 04 В 11/00. 1988 Авторское свидетельство СССР Ne 1224287. кл. С 04 В 11/00. 1986. * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LT5939B (en) | 2011-07-15 | 2013-05-27 | Vilniaus Gedimino technikos universitetas | Structural thermal insulation composite from local technogenic waste |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0309709B1 (en) | Process for the production of gypsum fibre board | |
NO883735D0 (en) | PROCEDURE FOR THE MANUFACTURE OF DEFIBRATED CELLULOS MATERIALS, SPECIFICLY FIBER, FOR THE MANUFACTURE OF FIBER PLATES. | |
SU1701668A1 (en) | Method of producing calcium sulfate (@@@-half-water) from phosphogypsum | |
CA1049822A (en) | Manufacture of fibrous artefacts | |
SU1217840A1 (en) | Raw mixture for manufacturing decorative acoustic material | |
DE3146143A1 (en) | Process for the preparation of very finely crystalline synthetic anhydrite | |
RU2201904C2 (en) | Raw mixture and method for building article making | |
RU1773891C (en) | Method of manufacturing gypsum fibrous plates | |
Paduchowicz et al. | Evaluation of the chemical composition, TG–DTA and tensile strength tests of commercial gypsum kinds for foundry sandmixes application | |
DE2539570A1 (en) | PROCESS FOR TREATMENT OF SANDED WOOD AND / OR PRODUCTS MANUFACTURED FROM IT | |
US3897259A (en) | Process for manufacturing incombustibles | |
NO144895B (en) | PROCEDURE FOR DRYING CHEMICAL AND SEMI-CHEMICAL MASSES | |
SU1183475A1 (en) | Method of producing anhydride binder | |
SU833697A1 (en) | Raw mixture for producing gypsum binder | |
SU503971A1 (en) | The method of manufacturing waterproof and waterproof paper | |
SU1664562A1 (en) | Method of manufacture of gypsum construction elements | |
SU346280A1 (en) | METHOD FOR PROCESSING OF CLAY FOR THE MANUFACTURE OF CONSTRUCTION PRODUCTS | |
SU1638137A1 (en) | Composition for preparation of heat-insulating material | |
SU1065365A1 (en) | Method for applying coating to glass fiber | |
SU1491858A1 (en) | Initial composition for making lightweight concrete | |
SU1178821A1 (en) | Method of producing asbestos cardboard and paper | |
SU1680657A1 (en) | Method for obtaining binding agent | |
SU767053A1 (en) | Method of making silicate articles | |
SU1599331A1 (en) | Binder | |
SU428053A1 (en) | METHOD OF MANUFACTURING PAPER ELECTROTECHNICAL PURPOSE |