AT297041B - Verfahren zur Verminderung des Fluorgehaltes von Phosphorsäureabfallgips - Google Patents
Verfahren zur Verminderung des Fluorgehaltes von PhosphorsäureabfallgipsInfo
- Publication number
- AT297041B AT297041B AT170170A AT170170A AT297041B AT 297041 B AT297041 B AT 297041B AT 170170 A AT170170 A AT 170170A AT 170170 A AT170170 A AT 170170A AT 297041 B AT297041 B AT 297041B
- Authority
- AT
- Austria
- Prior art keywords
- reducing
- phosphoric acid
- fluorine content
- acid waste
- waste gypsum
- Prior art date
Links
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 title 1
- 229910052731 fluorine Inorganic materials 0.000 title 1
- 239000011737 fluorine Substances 0.000 title 1
- 229910052602 gypsum Inorganic materials 0.000 title 1
- 239000010440 gypsum Substances 0.000 title 1
- 239000002699 waste material Substances 0.000 title 1
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
- C01F11/468—Purification of calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/08—Compounds containing halogen
- C01B33/10—Compounds containing silicon, fluorine, and other elements
- C01B33/103—Fluosilicic acid; Salts thereof
-
- 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
- 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
- C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT170170A AT297041B (de) | 1970-02-25 | 1970-02-25 | Verfahren zur Verminderung des Fluorgehaltes von Phosphorsäureabfallgips |
| DE19702009647 DE2009647A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1970-02-25 | 1970-03-02 | |
| NL7018582A NL7018582A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1970-02-25 | 1970-12-21 | |
| RO6560071A RO56862A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1970-02-25 | 1971-01-15 | |
| ZA710309A ZA71309B (en) | 1970-02-25 | 1971-01-18 | Improvements in or relating to the defluorination of gypsum |
| BR1106/71A BR7101106D0 (pt) | 1970-02-25 | 1971-02-18 | Processo para a producao do teor de fluor em gesso refugo do acido fosforico |
| PL14648571A PL73142B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1970-02-25 | 1971-02-25 | |
| BE763473A BE763473A (fr) | 1970-02-25 | 1971-02-25 | Procede pour diminuer la teneur en fluor du sulfate de calcium dihydrate de rebut precipite au cours de la production de l'acide phosphorique |
| GB2123771A GB1346933A (en) | 1970-02-25 | 1971-04-19 | Reduction to the fluorine content of gypsum |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT170170A AT297041B (de) | 1970-02-25 | 1970-02-25 | Verfahren zur Verminderung des Fluorgehaltes von Phosphorsäureabfallgips |
| DE19702009647 DE2009647A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1970-02-25 | 1970-03-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT297041B true AT297041B (de) | 1972-03-10 |
Family
ID=25596588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT170170A AT297041B (de) | 1970-02-25 | 1970-02-25 | Verfahren zur Verminderung des Fluorgehaltes von Phosphorsäureabfallgips |
Country Status (7)
-
1970
- 1970-02-25 AT AT170170A patent/AT297041B/de not_active IP Right Cessation
- 1970-03-02 DE DE19702009647 patent/DE2009647A1/de not_active Withdrawn
- 1970-12-21 NL NL7018582A patent/NL7018582A/xx unknown
-
1971
- 1971-01-18 ZA ZA710309A patent/ZA71309B/xx unknown
- 1971-02-18 BR BR1106/71A patent/BR7101106D0/pt unknown
- 1971-02-25 BE BE763473A patent/BE763473A/xx unknown
- 1971-04-19 GB GB2123771A patent/GB1346933A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2009647A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1971-12-02 |
| BE763473A (fr) | 1971-08-25 |
| ZA71309B (en) | 1972-08-30 |
| GB1346933A (en) | 1974-02-13 |
| NL7018582A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1971-08-27 |
| BR7101106D0 (pt) | 1973-06-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EFA | Change in the company name | ||
| ELJ | Ceased due to non-payment of the annual fee |