ATE5646T1 - Verfahren zur herstellung von phosphorsaeure und calciumsulfat-anhydrit. - Google Patents
Verfahren zur herstellung von phosphorsaeure und calciumsulfat-anhydrit.Info
- Publication number
- ATE5646T1 ATE5646T1 AT81200814T AT81200814T ATE5646T1 AT E5646 T1 ATE5646 T1 AT E5646T1 AT 81200814 T AT81200814 T AT 81200814T AT 81200814 T AT81200814 T AT 81200814T AT E5646 T1 ATE5646 T1 AT E5646T1
- Authority
- AT
- Austria
- Prior art keywords
- sub
- wash
- anhydrite
- gypsum
- phosphoric 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 abstract 8
- 229910052925 anhydrite Inorganic materials 0.000 title abstract 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title abstract 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 title abstract 2
- 235000011132 calcium sulphate Nutrition 0.000 title 1
- 239000001175 calcium sulphate Substances 0.000 title 1
- 229910052602 gypsum Inorganic materials 0.000 abstract 5
- 239000010440 gypsum Substances 0.000 abstract 5
- 238000005406 washing Methods 0.000 abstract 3
- 239000013078 crystal Substances 0.000 abstract 2
- 230000029087 digestion Effects 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 238000010790 dilution Methods 0.000 abstract 1
- 239000012895 dilution Substances 0.000 abstract 1
- 239000002367 phosphate rock Substances 0.000 abstract 1
- 238000001953 recrystallisation Methods 0.000 abstract 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
- C01B25/228—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 one form of calcium sulfate being formed and then converted to another form
- C01B25/2285—Dihydrate-anhydrite or hemihydrate-anhydrite process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Paper (AREA)
- Removal Of Specific Substances (AREA)
- Catalysts (AREA)
- Materials For Medical Uses (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8004058A NL8004058A (nl) | 1980-07-15 | 1980-07-15 | Werkwijze voor het bereiden van fosforzuur en calciumsulfaatanhydriet, alsmede fosforzuur en calciumsulfaatanhydriet verkregen volgens deze werkwijze. |
| EP81200814A EP0044120B1 (de) | 1980-07-15 | 1981-07-14 | Verfahren zur Herstellung von Phosphorsäure und Calciumsulfat-Anhydrit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE5646T1 true ATE5646T1 (de) | 1984-01-15 |
Family
ID=19835625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT81200814T ATE5646T1 (de) | 1980-07-15 | 1981-07-14 | Verfahren zur herstellung von phosphorsaeure und calciumsulfat-anhydrit. |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4362705A (de) |
| EP (1) | EP0044120B1 (de) |
| JP (1) | JPS5751108A (de) |
| AT (1) | ATE5646T1 (de) |
| DE (1) | DE3161703D1 (de) |
| ES (1) | ES8206374A1 (de) |
| IN (1) | IN153973B (de) |
| NL (1) | NL8004058A (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| SE8302591L (sv) * | 1983-05-06 | 1984-11-07 | Boliden Ab | Forfarande for framstellning av fibergips (ii) |
| SE8302590L (sv) * | 1983-05-06 | 1984-11-07 | Boliden Ab | Forfarande for framstellning av fibergips (i) |
| JPH0747902B2 (ja) * | 1986-07-09 | 1995-05-24 | レ アントルプリ−ズ トリツトン リミテ | ロツキングシ−ル |
| AU2002249752B2 (en) * | 2000-10-05 | 2007-05-17 | Pcs Nitrogen Fertilizer, L.P. | Gypsum decontamination process |
| CN102976299B (zh) * | 2012-12-17 | 2014-10-15 | 四川大学 | 一种生产磷酸和洁净石膏的方法 |
| 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 |
| CN111732086A (zh) * | 2020-07-31 | 2020-10-02 | 天宝动物营养科技股份有限公司 | 一种半水-二水法制备磷酸联产高纯石膏工艺 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2531977A (en) * | 1948-01-22 | 1950-11-28 | Allied Chem & Dye Corp | Process for manufacture of phosphoric acid |
| BE756759A (fr) * | 1969-09-30 | 1971-03-29 | Pechiney Saint Gobain | Procede de fabrication d'acide phosphorique de voie humide et de sulfate de calcium de qualite amelioree |
| NL7812109A (nl) * | 1978-12-13 | 1980-06-17 | Stamicarbon | Werkwijze voor het bereiden van calciumsulfaat- anhydriet en calciumsulfaatanhydriet verkregen volgens deze werkwijze. |
-
1980
- 1980-07-15 NL NL8004058A patent/NL8004058A/nl not_active Application Discontinuation
-
1981
- 1981-07-14 AT AT81200814T patent/ATE5646T1/de not_active IP Right Cessation
- 1981-07-14 EP EP81200814A patent/EP0044120B1/de not_active Expired
- 1981-07-14 DE DE8181200814T patent/DE3161703D1/de not_active Expired
- 1981-07-14 ES ES503945A patent/ES8206374A1/es not_active Expired
- 1981-07-15 US US06/283,723 patent/US4362705A/en not_active Expired - Fee Related
- 1981-07-15 JP JP56110643A patent/JPS5751108A/ja active Pending
- 1981-08-25 IN IN946/CAL/81A patent/IN153973B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IN153973B (de) | 1984-09-08 |
| JPS5751108A (en) | 1982-03-25 |
| EP0044120A2 (de) | 1982-01-20 |
| US4362705A (en) | 1982-12-07 |
| ES503945A0 (es) | 1982-08-16 |
| ES8206374A1 (es) | 1982-08-16 |
| EP0044120A3 (en) | 1982-01-27 |
| NL8004058A (nl) | 1982-02-16 |
| DE3161703D1 (en) | 1984-01-26 |
| EP0044120B1 (de) | 1983-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ATE5646T1 (de) | Verfahren zur herstellung von phosphorsaeure und calciumsulfat-anhydrit. | |
| SE7609051L (sv) | Forfarande for framstellning av en lett filtrerbar uppslamning av koncentrerad fosforsyra och kalciumsulfat-hemihydrat | |
| KR880007358A (ko) | 고농도 인산의 제조방법 | |
| ES420313A1 (es) | Un procedimiento para reducir la formacion de incrustacio- nes, principalmente, la formacion de incrustaciones de sul- fato de calcio durante la produccion de acido fosforico. | |
| GB1220963A (en) | Process for the production of phosphoric acid at a high concentration and gypsum by-product of improved quality | |
| GB1205122A (en) | Process for the production of phosphoric acid | |
| IE831425L (en) | Phosphohemihydrate purification | |
| ES310273A1 (es) | Procedimiento para la purificacion del yeso residual de la fabricacion de acido fosforico por ataque sulfurico de fosfatos naturales | |
| ES330957A1 (es) | Un procedimiento continuo para la preparacion de acido fosforico y yeso. | |
| GB1328357A (en) | Wet process for the manufacture of phosphoric acid and caldium sulphate | |
| GB1184585A (en) | A Method for Manufacturing Pure Gypsum. | |
| GB1175577A (en) | A Process for Preparing Phosphoric Acid | |
| ES369090A2 (es) | Un procedimiento continuo para la produccion de acido fos- forico. | |
| SU504747A1 (ru) | Способ получени сложного удобрени | |
| SU882922A1 (ru) | Способ получени фосфорной кислоты и дигидрата сульфата кальци | |
| ES310115A1 (es) | Un procedimiento para la produccion de acido fosforico y de cristales de yeso. | |
| SU556109A1 (ru) | Способ получени фосфорной кислоты | |
| ATA107584A (de) | Verfahren zur behandlung des bei der herstellung von phosphorsaeure durch nassen aufschluss von rohphosphat mit schwefelsaeure anfallenden abwassers | |
| SU1370074A1 (ru) | Способ получени фосфорной кислоты | |
| JPS5299992A (en) | Production of alpha-type hemihydrate gypsum of prismatic crystal from phosphoric acid by-product dihydrate gypsum | |
| ES349758A1 (es) | Un procedimiento para obtener acido fosforico por via hume-da. | |
| RU96101708A (ru) | Способ получения фосфорной кислоты | |
| SU628089A1 (ru) | Стабилизатор полугидрата сульфата кальци | |
| GB1209911A (en) | Manufacture of phosphoric acid | |
| SU1159881A1 (ru) | Способ получени фосфорной кислоты |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| UEP | Publication of translation of european patent specification | ||
| REN | Ceased due to non-payment of the annual fee |