DE2146007B2 - Verfahren zur separation von alpha- calciumsulfat-halbhydrat aus einer suspension - Google Patents
Verfahren zur separation von alpha- calciumsulfat-halbhydrat aus einer suspensionInfo
- Publication number
- DE2146007B2 DE2146007B2 DE19712146007 DE2146007A DE2146007B2 DE 2146007 B2 DE2146007 B2 DE 2146007B2 DE 19712146007 DE19712146007 DE 19712146007 DE 2146007 A DE2146007 A DE 2146007A DE 2146007 B2 DE2146007 B2 DE 2146007B2
- Authority
- DE
- Germany
- Prior art keywords
- hemihydrate
- alpha
- calcium sulfate
- suspension
- filter
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 32
- 230000008569 process Effects 0.000 title claims description 23
- 239000000725 suspension Substances 0.000 title claims description 22
- 238000000926 separation method Methods 0.000 title claims description 11
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 title description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000005406 washing Methods 0.000 claims description 13
- 239000012065 filter cake Substances 0.000 claims description 11
- 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 claims description 8
- 230000007704 transition Effects 0.000 claims description 8
- JIUIIWVYHWSFAZ-UHFFFAOYSA-N ac1o0v2m Chemical compound O.O.O.O.O JIUIIWVYHWSFAZ-UHFFFAOYSA-N 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 2
- 150000004683 dihydrates Chemical class 0.000 description 14
- 239000012452 mother liquor Substances 0.000 description 14
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000010440 gypsum Substances 0.000 description 8
- 229910052602 gypsum Inorganic materials 0.000 description 8
- 239000011734 sodium Substances 0.000 description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 230000029087 digestion Effects 0.000 description 5
- 230000036571 hydration Effects 0.000 description 5
- 238000006703 hydration reaction Methods 0.000 description 5
- 239000002367 phosphate rock Substances 0.000 description 5
- 238000001953 recrystallisation Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 239000007900 aqueous suspension Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical class O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 2
- 235000011132 calcium sulphate Nutrition 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000006253 efflorescence Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000011507 gypsum plaster Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 206010037844 rash Diseases 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000000209 wet digestion Methods 0.000 description 2
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 1
- 235000010205 Cola acuminata Nutrition 0.000 description 1
- 244000228088 Cola acuminata Species 0.000 description 1
- 235000015438 Cola nitida Nutrition 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 150000008043 acidic salts Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 235000019445 benzyl alcohol Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000012970 cakes Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000021463 dry cake Nutrition 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 238000012994 industrial processing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000003828 vacuum filtration Methods 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
-
- 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)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Paper (AREA)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712146007 DE2146007B2 (de) | 1971-09-15 | 1971-09-15 | Verfahren zur separation von alpha- calciumsulfat-halbhydrat aus einer suspension |
| BE787408A BE787408A (fr) | 1971-09-15 | 1972-08-10 | Procede de separation de l'alpha-sulfate de calcium hemihydrateet de transformation de l'hemihydrate en corps de gypse |
| AU45816/72A AU457927B2 (en) | 1971-09-15 | 1972-08-22 | Method of separating alpha-calciumsulphate-hemihydrate from a suspension, and of processing the hemihydrate to gypsum powder or articles |
| FR7231126A FR2153905A5 (https=) | 1971-09-15 | 1972-09-01 | |
| GB4257072A GB1385757A (en) | 1971-09-15 | 1972-09-13 | Treating calcium sulphate |
| NL7212495A NL7212495A (https=) | 1971-09-15 | 1972-09-14 | |
| JP9277772A JPS4838298A (https=) | 1971-09-15 | 1972-09-14 | |
| IE126072A IE36901B1 (en) | 1971-09-15 | 1972-09-14 | Process for treatment of alpha - calcium sulphate semi-hydrate |
| ZA731540A ZA731540B (en) | 1971-09-15 | 1973-03-06 | A process for separating alpha calcium sulphate monohydrate from a suspension and for subsequent processing of the monohydrate to yield powdered gypsum or gypsum elements |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712146007 DE2146007B2 (de) | 1971-09-15 | 1971-09-15 | Verfahren zur separation von alpha- calciumsulfat-halbhydrat aus einer suspension |
| ZA731540A ZA731540B (en) | 1971-09-15 | 1973-03-06 | A process for separating alpha calcium sulphate monohydrate from a suspension and for subsequent processing of the monohydrate to yield powdered gypsum or gypsum elements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2146007A1 DE2146007A1 (de) | 1973-03-22 |
| DE2146007B2 true DE2146007B2 (de) | 1976-11-11 |
Family
ID=25761728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19712146007 Withdrawn DE2146007B2 (de) | 1971-09-15 | 1971-09-15 | Verfahren zur separation von alpha- calciumsulfat-halbhydrat aus einer suspension |
Country Status (7)
| Country | Link |
|---|---|
| AU (1) | AU457927B2 (https=) |
| BE (1) | BE787408A (https=) |
| DE (1) | DE2146007B2 (https=) |
| FR (1) | FR2153905A5 (https=) |
| GB (1) | GB1385757A (https=) |
| NL (1) | NL7212495A (https=) |
| ZA (1) | ZA731540B (https=) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1547422A (en) * | 1975-03-31 | 1979-06-20 | Japan Government | Manufacture of gypsum |
| DE3331839C1 (de) * | 1983-09-03 | 1985-03-21 | Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserrückkühlanlagen GmbH & Co KG, 4300 Essen | Verfahren zur Herstellung von Alphahalbhydrat-Gipskristallen aus Dihydrat-Gips enthaltenden Rückständen |
-
1971
- 1971-09-15 DE DE19712146007 patent/DE2146007B2/de not_active Withdrawn
-
1972
- 1972-08-10 BE BE787408A patent/BE787408A/xx unknown
- 1972-08-22 AU AU45816/72A patent/AU457927B2/en not_active Expired
- 1972-09-01 FR FR7231126A patent/FR2153905A5/fr not_active Expired
- 1972-09-13 GB GB4257072A patent/GB1385757A/en not_active Expired
- 1972-09-14 NL NL7212495A patent/NL7212495A/xx not_active Application Discontinuation
-
1973
- 1973-03-06 ZA ZA731540A patent/ZA731540B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2153905A5 (https=) | 1973-05-04 |
| AU457927B2 (en) | 1975-02-13 |
| DE2146007A1 (de) | 1973-03-22 |
| BE787408A (fr) | 1972-12-01 |
| AU4581672A (en) | 1974-02-28 |
| ZA731540B (en) | 1974-02-27 |
| NL7212495A (https=) | 1973-03-19 |
| GB1385757A (en) | 1975-02-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BGA | New person/name/address of the applicant | ||
| BHN | Withdrawal |