BE713349A - - Google Patents
Info
- Publication number
- BE713349A BE713349A BE713349DA BE713349A BE 713349 A BE713349 A BE 713349A BE 713349D A BE713349D A BE 713349DA BE 713349 A BE713349 A BE 713349A
- Authority
- BE
- Belgium
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
- C04B11/024—Ingredients added before, or during, the calcining process, e.g. calcination modifiers
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/19—Fluorine; Hydrogen fluoride
- C01B7/191—Hydrogen fluoride
-
- 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)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Removal Of Specific Substances (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT330667A AT273042B (de) | 1967-04-07 | 1967-04-07 | Verfahren zur Entfernung von Fluor und Phosphat aus Phosphorsäurefällungsgips |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE713349A true BE713349A (US20030204162A1-20031030-M00001.png) | 1968-10-07 |
Family
ID=3548508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE713349D BE713349A (US20030204162A1-20031030-M00001.png) | 1967-04-07 | 1968-04-05 |
Country Status (5)
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2076260A5 (US20030204162A1-20031030-M00001.png) * | 1970-01-06 | 1971-10-15 | Progil | |
| US3928053A (en) * | 1973-06-04 | 1975-12-23 | Onoda Cement Co Ltd | Method of improving the grade of phosphoric acid by-product gypsum to be used as an inhibitor for cement setting and its apparatus |
| US4060586A (en) * | 1976-06-15 | 1977-11-29 | Pennzoil Company | Recovery of fluorides from gypsum |
| US4162170A (en) * | 1977-06-29 | 1979-07-24 | Vish Chimiko-Technologicheski Institute | Method of obtaining granulated and defluorated phosphogypsum |
| US4415543A (en) * | 1980-02-12 | 1983-11-15 | Wilson Sr Eddie K | Process for treating phospho-gypsum waste product from wet-acid process of making phosphoric acid |
| US4312842A (en) * | 1980-02-12 | 1982-01-26 | Wilson Sr Eddie K | Process of manufacture of phosphoric acid with recovery of co-products |
| AU1150583A (en) * | 1981-12-21 | 1983-07-15 | United States Gypsum Company | Conversion of fluoroanhydrite to plaster |
| DE102020100260A1 (de) | 2020-01-08 | 2021-07-08 | Thyssenkrupp Ag | Integriertes Verfahren zur Herstellung von Schwefelsäureprozess-geeigneter Schwefeldioxidqualität aus Kalziumsulfat/Phosphorgips aus der Phosphorsäureproduktion |
| DE102020100249A1 (de) | 2020-01-08 | 2021-07-08 | Thyssenkrupp Ag | Integriertes Verfahren zur kommerziellen und industriellen Verwertung von Kalziumsulfat unter Gewinnung von Seltenen Erden aus der Phosphorsäureproduktion |
| DE102020100238A1 (de) | 2020-01-08 | 2021-07-08 | Thyssenkrupp Ag | Integriertes Verfahren zur kommerziellen und industriellen Verwertung von Kalziumsulfat aus der Phosphorsäureproduktion |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB363347A (en) * | 1930-07-12 | 1931-12-14 | Sydney Francis William Crundal | Improvements in the preparation of calcium sulphate |
| US1969449A (en) * | 1931-10-17 | 1934-08-07 | Rumford Chemical Works | Process of producing by-product calcium sulphate |
| US2418590A (en) * | 1944-05-04 | 1947-04-08 | United States Gypsum Co | Process of making anhydrous calcium sulphate |
| GB1104738A (en) * | 1966-12-06 | 1968-02-28 | Coswig Chemiewerk Veb | Process for the defluorination of waste gypsum |
-
1967
- 1967-04-07 AT AT330667A patent/AT273042B/de active
-
1968
- 1968-02-13 NL NL6802022A patent/NL6802022A/xx unknown
- 1968-03-25 GB GB04366/68A patent/GB1174512A/en not_active Expired
- 1968-04-02 US US718217A patent/US3547581A/en not_active Expired - Lifetime
- 1968-04-05 BE BE713349D patent/BE713349A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1174512A (en) | 1969-12-17 |
| NL6802022A (US20030204162A1-20031030-M00001.png) | 1968-10-08 |
| US3547581A (en) | 1970-12-15 |
| AT273042B (de) | 1969-07-25 |
