IE49233B1 - Process for the preparation of calcium sulphate anhydrite and calcium sulphate anhydrite obtained by this process - Google Patents
Process for the preparation of calcium sulphate anhydrite and calcium sulphate anhydrite obtained by this processInfo
- Publication number
- IE49233B1 IE49233B1 IE2402/79A IE240279A IE49233B1 IE 49233 B1 IE49233 B1 IE 49233B1 IE 2402/79 A IE2402/79 A IE 2402/79A IE 240279 A IE240279 A IE 240279A IE 49233 B1 IE49233 B1 IE 49233B1
- Authority
- IE
- Ireland
- Prior art keywords
- calcium sulphate
- recrystallization
- preparation
- anhydrite
- sulphuric acid
- Prior art date
Links
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 title claims abstract description 76
- 239000001175 calcium sulphate Substances 0.000 title claims abstract description 26
- 235000011132 calcium sulphate Nutrition 0.000 title claims abstract description 26
- 229910052925 anhydrite Inorganic materials 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000001953 recrystallisation Methods 0.000 claims abstract description 30
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000001117 sulphuric acid Substances 0.000 claims abstract description 23
- 235000011149 sulphuric acid Nutrition 0.000 claims abstract description 23
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 13
- 239000007791 liquid phase Substances 0.000 claims abstract description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 8
- 229910000765 intermetallic Inorganic materials 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 230000029087 digestion Effects 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- -1 calcium sulphate anhydride Chemical class 0.000 claims 1
- 150000003681 vanadium Chemical class 0.000 claims 1
- 239000002253 acid Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 235000021317 phosphate Nutrition 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 241001274613 Corvus frugilegus Species 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 239000001166 ammonium sulphate Substances 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- PHFQLYPOURZARY-UHFFFAOYSA-N chromium nitrate Inorganic materials [Cr+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PHFQLYPOURZARY-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 235000009529 zinc sulphate Nutrition 0.000 description 1
- 239000011686 zinc sulphate Substances 0.000 description 1
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
- C04B11/05—Calcium sulfate cements obtaining anhydrite, e.g. Keene's cement
-
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/02—Compounds of alkaline earth metals or magnesium
- C09C1/025—Calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7812109A NL7812109A (nl) | 1978-12-13 | 1978-12-13 | Werkwijze voor het bereiden van calciumsulfaat- anhydriet en calciumsulfaatanhydriet verkregen volgens deze werkwijze. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE792402L IE792402L (en) | 1980-06-13 |
| IE49233B1 true IE49233B1 (en) | 1985-09-04 |
Family
ID=19832061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE2402/79A IE49233B1 (en) | 1978-12-13 | 1979-12-21 | Process for the preparation of calcium sulphate anhydrite and calcium sulphate anhydrite obtained by this process |
Country Status (11)
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0044005B1 (de) * | 1980-07-14 | 1984-09-26 | HIS Handels- und Industriebedarf GmbH | Herstellung von Gipshalbhydrat mit Wärmemüll, wässriger H2SO4 und schwefelsauren Salzen |
| NL8004058A (nl) * | 1980-07-15 | 1982-02-16 | Stamicarbon | Werkwijze voor het bereiden van fosforzuur en calciumsulfaatanhydriet, alsmede fosforzuur en calciumsulfaatanhydriet verkregen volgens deze werkwijze. |
| US4452770A (en) * | 1981-12-14 | 1984-06-05 | United States Gypsum Company | Phosphoanhydrite process |
| SE440069B (sv) * | 1982-12-22 | 1985-07-15 | Boliden Ab | Forfarande for omkristallisation av gips |
| SE8302592L (sv) * | 1983-05-06 | 1984-11-07 | Boliden Ab | Forfarande for framstellning av fibergips (iii) |
| SE8302591L (sv) * | 1983-05-06 | 1984-11-07 | Boliden Ab | Forfarande for framstellning av fibergips (ii) |
| US5169444A (en) * | 1986-02-20 | 1992-12-08 | Gebruder Knauf Westdeutsche Gipswerke Kg | Process for preparing calcium sulfate anhydrite |
| EP0237802B1 (de) * | 1986-02-20 | 1990-05-09 | Gebr. Knauf Westdeutsche Gipswerke KG | Verfahren zur Herstellung von Calciumsulfat-Anhydrit und abbindefähigen Calciumsulfaten |
| DE3605393C1 (en) * | 1986-02-20 | 1987-09-03 | Knauf Westdeutsche Gips | Process for the preparation of anhydrous calcium sulphate (anhydrite) |
| DE3714035A1 (de) * | 1986-07-25 | 1988-11-24 | Knauf Westdeutsche Gips | Verfahren zur herstellung von abbindefaehigen calciumsulfaten und ihre verwendung |
| GB8701263D0 (en) * | 1987-01-21 | 1987-02-25 | Ecc Int Ltd | Forming concentrated aqueous suspension |
| FR2658075B1 (fr) * | 1990-02-14 | 1992-05-07 | Oreal | Composition cosmetique filtrante photostable contenant un filtre uv-a et un beta,beta-diphenylacrylate ou alpha-cyano-beta,beta-diphenylacrylate d'alkyle. |
| US5964940A (en) * | 1998-04-20 | 1999-10-12 | Wilson; Harold W. | Process for increasing the water solubility of gypsum |
| US7556791B2 (en) * | 2006-12-20 | 2009-07-07 | United States Gypsum Company | Gypsum anhydrite fillers and process for making same |
| CN102634843B (zh) * | 2012-04-27 | 2015-04-22 | 昆明理工大学 | 一种磷石膏制取微米级硫酸钙颗粒和晶须的方法 |
| DE102020100241A1 (de) * | 2020-01-08 | 2021-07-08 | Thyssenkrupp Ag | Verfahren zur Herstellung von Phosphorsäure und Klinkerprozess-geeigneter Kalziumsulfatqualität zur kommerziellen und industriellen Verwertung von Kalziumsulfat |
| CN113603128B (zh) * | 2021-09-08 | 2024-11-22 | 西南科技大学 | 工业副产石膏制备多种硫酸钙粉体的方法以及硫酸钙粉体 |
| CN113772709B (zh) * | 2021-09-30 | 2023-05-30 | 贵州大学 | 一种利用磷石膏制备无水微米硫酸钙的方法 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2021910A (en) * | 1935-11-26 | Preparation of calcium sulphate | ||
| US2006342A (en) * | 1934-05-18 | 1935-07-02 | Krebs Pigment & Color Corp | Process of making anhydrite |
| US2151339A (en) * | 1935-04-20 | 1939-03-21 | Du Pont | Process of making calcium sulphate |
| US2197953A (en) * | 1937-12-02 | 1940-04-23 | Du Pont | Process for making anhydrite |
| GB561205A (en) * | 1942-07-13 | 1944-05-10 | Francis Robert Himsworth | Improvements in or relating to the production of gypsum from anhydrite |
| US2956859A (en) * | 1957-12-26 | 1960-10-18 | Nat Lead Co | Preparation of anhydrite |
| GB848617A (en) * | 1957-12-26 | 1960-09-21 | Nat Lead Co | Improvements in or relating to the preparation of anhydrite |
| US2999007A (en) * | 1958-07-29 | 1961-09-05 | American Cyanamid Co | Process of preparing anhydrite of improved whiteness from off-white gypsum |
| GB1101771A (en) * | 1963-08-14 | 1968-01-31 | Bpb Industries Ltd | Improvements relating to the production of gypsum plaster |
| IL23004A (en) * | 1964-02-27 | 1969-03-27 | Fosindus Co | Process for the purification of residual gypsum produced in the manufacture of phosphoric acid by the reaction of sulphuric acid with natural phosphates |
| GB1081895A (en) * | 1965-11-09 | 1967-09-06 | Occidental Res & Eng | Improvements relating to the production of phosphoric acids |
| US4146568A (en) * | 1977-08-01 | 1979-03-27 | Olin Corporation | Process for reducing radioactive contamination in waste product gypsum |
-
1978
- 1978-12-13 NL NL7812109A patent/NL7812109A/nl not_active Application Discontinuation
-
1979
- 1979-12-07 JP JP15905079A patent/JPS5580720A/ja active Pending
- 1979-12-12 ES ES486803A patent/ES486803A1/es not_active Expired
- 1979-12-12 DE DE7979200754T patent/DE2962749D1/de not_active Expired
- 1979-12-12 EP EP79200754A patent/EP0012487B1/en not_active Expired
- 1979-12-12 AT AT79200754T patent/ATE957T1/de not_active IP Right Cessation
- 1979-12-12 SU SU792851660A patent/SU952100A3/ru active
- 1979-12-13 DD DD79217647A patent/DD147938A5/de unknown
- 1979-12-21 IE IE2402/79A patent/IE49233B1/en unknown
-
1980
- 1980-05-15 IN IN580/CAL/80A patent/IN154049B/en unknown
-
1981
- 1981-04-24 US US06/257,475 patent/US4387083A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0012487B1 (en) | 1982-05-05 |
| ATE957T1 (de) | 1982-05-15 |
| JPS5580720A (en) | 1980-06-18 |
| ES486803A1 (es) | 1980-06-16 |
| IN154049B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1984-09-15 |
| DE2962749D1 (en) | 1982-06-24 |
| NL7812109A (nl) | 1980-06-17 |
| EP0012487A1 (en) | 1980-06-25 |
| DD147938A5 (de) | 1981-04-29 |
| US4387083A (en) | 1983-06-07 |
| IE792402L (en) | 1980-06-13 |
| SU952100A3 (ru) | 1982-08-15 |
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