DE2549625A1 - Verfahren zur herstellung von abfallgips - Google Patents
Verfahren zur herstellung von abfallgipsInfo
- Publication number
- DE2549625A1 DE2549625A1 DE19752549625 DE2549625A DE2549625A1 DE 2549625 A1 DE2549625 A1 DE 2549625A1 DE 19752549625 DE19752549625 DE 19752549625 DE 2549625 A DE2549625 A DE 2549625A DE 2549625 A1 DE2549625 A1 DE 2549625A1
- Authority
- DE
- Germany
- Prior art keywords
- added
- silica
- digestion
- waste gypsum
- active silica
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 25
- 239000002699 waste material Substances 0.000 title claims description 19
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000011505 plaster Substances 0.000 title 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 66
- 239000000377 silicon dioxide Substances 0.000 claims description 28
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 24
- 229910052602 gypsum Inorganic materials 0.000 claims description 22
- 239000010440 gypsum Substances 0.000 claims description 22
- 230000029087 digestion Effects 0.000 claims description 19
- 239000002367 phosphate rock Substances 0.000 claims description 15
- 229910052731 fluorine Inorganic materials 0.000 claims description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 12
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 12
- 239000011737 fluorine Substances 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910052925 anhydrite Inorganic materials 0.000 claims description 4
- 239000007900 aqueous suspension Substances 0.000 claims description 2
- 239000007791 liquid phase Substances 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 description 12
- 235000021317 phosphate Nutrition 0.000 description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 9
- 239000010452 phosphate Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- 235000012239 silicon dioxide Nutrition 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 5
- 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 4
- 239000011507 gypsum plaster Substances 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- 239000006004 Quartz sand Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000006115 defluorination reaction Methods 0.000 description 3
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- -1 calcium fluoride Chemical class 0.000 description 2
- 235000011132 calcium sulphate Nutrition 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000010626 work up procedure Methods 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910008284 Si—F Inorganic materials 0.000 description 1
- IHTFTOGFXXXQBO-UHFFFAOYSA-B [C+4].[C+4].[C+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O Chemical compound [C+4].[C+4].[C+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O IHTFTOGFXXXQBO-UHFFFAOYSA-B 0.000 description 1
- 238000000184 acid digestion Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052587 fluorapatite Inorganic materials 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- YXJYBPXSEKMEEJ-UHFFFAOYSA-N phosphoric acid;sulfuric acid Chemical compound OP(O)(O)=O.OS(O)(=O)=O YXJYBPXSEKMEEJ-UHFFFAOYSA-N 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 235000015067 sauces Nutrition 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/18—Phosphoric acid
- C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
- C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
- C01B25/223—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen only one form of calcium sulfate being formed
- C01B25/225—Dihydrate process
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Fertilizers (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Processing Of Solid Wastes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT989274A AT346223B (de) | 1974-12-11 | 1974-12-11 | Verfahren zur gewinnung von fluorarmem gips als abfallprodukt aus dem nassphosphorsaeureverfahren |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2549625A1 true DE2549625A1 (de) | 1976-06-16 |
Family
ID=3618235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752549625 Pending DE2549625A1 (de) | 1974-12-11 | 1975-11-05 | Verfahren zur herstellung von abfallgips |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US4026990A (forum.php) |
| JP (1) | JPS5183897A (forum.php) |
| AT (1) | AT346223B (forum.php) |
| BE (1) | BE836510A (forum.php) |
| BR (1) | BR7508195A (forum.php) |
| DD (1) | DD122059A1 (forum.php) |
| DE (1) | DE2549625A1 (forum.php) |
| FR (1) | FR2294132A1 (forum.php) |
| IL (1) | IL48616A0 (forum.php) |
| IN (1) | IN145328B (forum.php) |
| NL (1) | NL7514463A (forum.php) |
| RO (1) | RO69299A (forum.php) |
| SU (1) | SU577960A3 (forum.php) |
| ZA (1) | ZA757656B (forum.php) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983002266A1 (en) * | 1981-12-21 | 1983-07-07 | United States Gypsum Co | Conversion of fluoroanhydrite to plaster |
| US5236679A (en) * | 1992-05-06 | 1993-08-17 | Freeport-Mcmoran Resource Partners | Removal of aluminum contamination during production of phosphoric acid |
| WO1999041065A1 (en) | 1996-03-06 | 1999-08-19 | Compositech, Llc. | Thermoplastic articles made from recycled products and process for making |
| WO2008062430A2 (en) * | 2006-08-25 | 2008-05-29 | Acc Limited | A method of inertising the impurities in phosphogypsum |
| CN102093072B (zh) * | 2010-12-08 | 2013-01-09 | 济南大学 | 一种氟石膏发泡材料及其制备方法 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1858203A (en) * | 1931-01-13 | 1932-05-10 | Rumford Chemical Works | Purification of phosphoric acid |
| US1969449A (en) * | 1931-10-17 | 1934-08-07 | Rumford Chemical Works | Process of producing by-product calcium sulphate |
| US2123785A (en) * | 1936-03-02 | 1938-07-12 | Victor Chemical Works | Removal of fluorine from phosphoric acid |
| US3151941A (en) * | 1960-05-02 | 1964-10-06 | Smith Douglass Company Inc | Defluorination of peosphoric acid |
| US3193351A (en) * | 1961-07-05 | 1965-07-06 | Nat Distillers Chem Corp | Removal of fluorine from wet process prosphoric acid |
| CA718837A (en) * | 1962-06-23 | 1965-09-28 | Toyo Engineering Corporation | Wet-process phosphoric acid manufacture by the semihydrate-dihydrate calcium sulphate method |
| US3323864A (en) * | 1963-08-29 | 1967-06-06 | Fmc Corp | Production of phosphoric acid from a phosphatic ore |
| GB1248037A (en) * | 1968-01-13 | 1971-09-29 | Fisons Ltd | Calcium sulphate |
| US3743725A (en) * | 1971-11-04 | 1973-07-03 | Atlantic Richfield Co | Process for the recovery in useful form of fluorine values from phosphate rock while producing phosphoric acid |
| US3764658A (en) * | 1972-01-26 | 1973-10-09 | United States Steel Corp | Production of fluosilicic acid |
-
1974
- 1974-12-11 AT AT989274A patent/AT346223B/de not_active IP Right Cessation
-
1975
- 1975-11-05 DE DE19752549625 patent/DE2549625A1/de active Pending
- 1975-12-02 RO RO7584077A patent/RO69299A/ro unknown
- 1975-12-04 IN IN2306/CAL/75A patent/IN145328B/en unknown
- 1975-12-05 FR FR7537273A patent/FR2294132A1/fr active Granted
- 1975-12-05 ZA ZA757656A patent/ZA757656B/xx unknown
- 1975-12-08 IL IL48616A patent/IL48616A0/xx unknown
- 1975-12-09 SU SU7502196095A patent/SU577960A3/ru active
- 1975-12-10 BE BE162640A patent/BE836510A/xx unknown
- 1975-12-10 BR BR7508195*A patent/BR7508195A/pt unknown
- 1975-12-10 DD DD190027A patent/DD122059A1/xx unknown
- 1975-12-11 US US05/639,928 patent/US4026990A/en not_active Expired - Lifetime
- 1975-12-11 NL NL7514463A patent/NL7514463A/xx unknown
- 1975-12-11 JP JP50146947A patent/JPS5183897A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| ZA757656B (en) | 1976-11-24 |
| NL7514463A (nl) | 1976-06-15 |
| FR2294132B1 (forum.php) | 1978-05-12 |
| IN145328B (forum.php) | 1978-09-23 |
| AT346223B (de) | 1978-10-25 |
| FR2294132A1 (fr) | 1976-07-09 |
| RO69299A (ro) | 1980-06-15 |
| DD122059A1 (forum.php) | 1976-09-12 |
| JPS5183897A (forum.php) | 1976-07-22 |
| IL48616A0 (en) | 1976-02-29 |
| SU577960A3 (ru) | 1977-10-25 |
| US4026990A (en) | 1977-05-31 |
| BR7508195A (pt) | 1976-08-24 |
| ATA989274A (de) | 1978-02-15 |
| BE836510A (fr) | 1976-06-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OHN | Withdrawal |