SE389092B - Forfarande for tvettning av kristaller avkalciumsulfatanhydrit och/eller kalciumsulfathemihydrat - Google Patents
Forfarande for tvettning av kristaller avkalciumsulfatanhydrit och/eller kalciumsulfathemihydratInfo
- Publication number
- SE389092B SE389092B SE7315123A SE7315123A SE389092B SE 389092 B SE389092 B SE 389092B SE 7315123 A SE7315123 A SE 7315123A SE 7315123 A SE7315123 A SE 7315123A SE 389092 B SE389092 B SE 389092B
- Authority
- SE
- Sweden
- Prior art keywords
- calcium sulphate
- procedure
- anhydrite
- hemihydrate
- washing crystals
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F15/00—Other methods of preventing corrosion or incrustation
- C23F15/005—Inhibiting incrustation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
- B01D11/0288—Applications, solvents
-
- 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
-
- 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
- C01B25/2235—Anhydrite processes
-
- 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
- C01B25/226—Hemihydrate process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Detergent Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5145472A GB1451608A (en) | 1972-11-08 | 1972-11-08 | Process for reducing calcium sulphate scale formation |
Publications (1)
Publication Number | Publication Date |
---|---|
SE389092B true SE389092B (sv) | 1976-10-25 |
Family
ID=10460097
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7315123A SE389092B (sv) | 1972-11-08 | 1973-11-07 | Forfarande for tvettning av kristaller avkalciumsulfatanhydrit och/eller kalciumsulfathemihydrat |
SE7600174A SE414164B (sv) | 1972-11-08 | 1976-01-09 | Forfarande for framstellning av fosforsyra |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7600174A SE414164B (sv) | 1972-11-08 | 1976-01-09 | Forfarande for framstellning av fosforsyra |
Country Status (22)
Country | Link |
---|---|
US (1) | US3972981A (xx) |
JP (2) | JPS594379B2 (xx) |
AT (1) | AT363910B (xx) |
BE (1) | BE806533A (xx) |
BR (1) | BR7308671D0 (xx) |
CA (1) | CA1032731A (xx) |
CS (1) | CS200462B2 (xx) |
DD (1) | DD111883A5 (xx) |
DE (1) | DE2355607A1 (xx) |
ES (1) | ES420313A1 (xx) |
FR (1) | FR2205479B1 (xx) |
GB (1) | GB1451608A (xx) |
HU (1) | HU168213B (xx) |
IN (1) | IN141012B (xx) |
IT (1) | IT1012092B (xx) |
NL (1) | NL7314813A (xx) |
OA (1) | OA04514A (xx) |
PL (1) | PL102163B1 (xx) |
RO (1) | RO63885A (xx) |
SE (2) | SE389092B (xx) |
SU (1) | SU695549A3 (xx) |
ZA (1) | ZA738038B (xx) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4049774A (en) * | 1970-11-12 | 1977-09-20 | Fisons Limited | Process for reducing formation of gypsum scale durng the washing of calcium sulphate hemihydrate crystals |
US4221769A (en) * | 1972-11-08 | 1980-09-09 | Fisons Limited | Process for preventing the formation of calcium sulphate scale |
DE2427122B2 (de) * | 1974-06-05 | 1976-12-30 | Gebr. Knauf Westdeutsche Gipswerke, 8715 Iphofen | Verfahren zur stabilisierung des bei der herstellung nasser phosphorsaeure anfallenden alpha-calciumsulfat-halbhydrat |
US4332779A (en) * | 1980-11-24 | 1982-06-01 | American Cyanamid Company | Phosphoric acid filtration process |
JPS63144107A (ja) * | 1986-12-08 | 1988-06-16 | Mitsui Toatsu Chem Inc | 高濃度燐酸−半水石こうスラリ−の濾過方法 |
US20090294373A1 (en) * | 2008-05-30 | 2009-12-03 | Gill Jasbir S | Inhibition of water formed scale in acid conditions |
US20090294372A1 (en) * | 2008-05-30 | 2009-12-03 | Gill Jasbir S | Inhibition of water formed scale in acid conditions |
US9028787B2 (en) * | 2009-09-25 | 2015-05-12 | Cytec Technology Corp. | Preventing or reducing scale in wet-process phosphoric acid production |
MX344050B (es) * | 2009-09-25 | 2016-12-02 | Cytec Tech Corp * | Procesos reactivos para la inhibicion o reduccion de formacion de incrustaciones durante la produccion de acido fosforico. |
BR112012006675A2 (pt) * | 2009-09-25 | 2016-05-10 | Cytec Tech Corp | método para prevenir ou para reduzir pelo menos uma espécie de crosta em um processo de produção de ácido fosfórico em um processo a úmido |
US8900539B2 (en) | 2011-03-22 | 2014-12-02 | Cytec Technology Corp. | Preventing or reducing scale in wet-process phosphoric acid production |
CN106232874B (zh) | 2014-02-11 | 2019-08-06 | 塞特工业公司 | 作为抑垢剂有用的含有伯胺的聚合物 |
RU2714069C2 (ru) | 2015-02-11 | 2020-02-11 | Сайтек Индастриз Инк. | Модифицированные амины, применяемые в качестве ингибиторов образования накипи при получении фосфорной кислоты влажным способом |
US10759662B2 (en) * | 2018-03-12 | 2020-09-01 | Solenis Technologies, L.P. | Systems and methods for reducing formation of scale in phosphoric acid production |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2448218A (en) * | 1942-12-17 | 1948-08-31 | British Plaster Board Ltd | Manufacture of plaster of paris |
US2968528A (en) * | 1957-07-01 | 1961-01-17 | Int Minerals & Chem Corp | Process for producing clarified phosphoric acid |
GB1011163A (en) * | 1961-04-26 | 1965-11-24 | Dorr Oliver Inc | Manufacture of phosphoric acid |
US3238142A (en) * | 1963-10-16 | 1966-03-01 | American Cyanamid Co | Antifoaming composition |
GB1113922A (en) * | 1964-08-19 | 1968-05-15 | Fisons Ltd | Clarifying phosphoric acid |
DE1238374B (de) * | 1965-04-24 | 1967-04-06 | Giulini Ges Mit Beschraenkter | Verfahren zur Herstellung von alpha-Calciumsulfat-Halbhydrat |
US3397956A (en) * | 1966-07-28 | 1968-08-20 | Nalco Chemical Co | Process for manufacturing phosphoric acid |
US3594123A (en) * | 1967-08-10 | 1971-07-20 | Arizona Chem | Enhancement of gypsum crystal growth in wet-process phosphoric acid |
US3598755A (en) * | 1968-07-05 | 1971-08-10 | Continental Oil Co | Foam control agents |
CA880214A (en) * | 1968-07-10 | 1971-09-07 | Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government | Recovering phosphoric acid |
US3645677A (en) * | 1968-09-24 | 1972-02-29 | Taki Fertilizer Mfg Co Ltd | Production of gypsum |
US3554694A (en) * | 1969-06-02 | 1971-01-12 | Cities Service Co | Process for producing fluosilicates |
DE2035505C3 (de) * | 1970-07-17 | 1974-06-12 | Knapsack Ag, 5033 Huerth-Knapsack | Verfahren zur Herstellung reiner Alkaliphosphatlösungen |
US3714330A (en) * | 1970-08-14 | 1973-01-30 | Cities Service Co | Treatment of phosphoric acid to recover alkali metal fluosilicates |
US3796790A (en) * | 1972-04-25 | 1974-03-12 | Canadian Patents Dev | Process for recovering concentrated phosphoric acid |
-
1972
- 1972-11-08 GB GB5145472A patent/GB1451608A/en not_active Expired
-
1973
- 1973-10-16 ZA ZA00738038A patent/ZA738038B/xx unknown
- 1973-10-25 BE BE137083A patent/BE806533A/xx not_active IP Right Cessation
- 1973-10-25 US US05/409,366 patent/US3972981A/en not_active Expired - Lifetime
- 1973-10-29 AT AT0911973A patent/AT363910B/de not_active IP Right Cessation
- 1973-10-29 NL NL7314813A patent/NL7314813A/xx not_active Application Discontinuation
- 1973-10-30 CA CA184,624A patent/CA1032731A/en not_active Expired
- 1973-11-02 IN IN2421/CAL/1973A patent/IN141012B/en unknown
- 1973-11-06 SU SU731967924A patent/SU695549A3/ru active
- 1973-11-06 RO RO7376545A patent/RO63885A/ro unknown
- 1973-11-06 HU HUFI549A patent/HU168213B/hu unknown
- 1973-11-06 DD DD174483A patent/DD111883A5/xx unknown
- 1973-11-07 PL PL1973166379A patent/PL102163B1/pl unknown
- 1973-11-07 BR BR8671/73A patent/BR7308671D0/pt unknown
- 1973-11-07 ES ES420313A patent/ES420313A1/es not_active Expired
- 1973-11-07 DE DE19732355607 patent/DE2355607A1/de not_active Withdrawn
- 1973-11-07 FR FR7339491A patent/FR2205479B1/fr not_active Expired
- 1973-11-07 SE SE7315123A patent/SE389092B/xx unknown
- 1973-11-08 CS CS737666A patent/CS200462B2/cs unknown
- 1973-11-08 JP JP48125040A patent/JPS594379B2/ja not_active Expired
- 1973-11-08 IT IT7331058A patent/IT1012092B/it active
- 1973-11-28 OA OA55072A patent/OA04514A/xx unknown
-
1976
- 1976-01-09 SE SE7600174A patent/SE414164B/xx unknown
-
1983
- 1983-09-27 JP JP58177201A patent/JPS59152211A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2205479B1 (xx) | 1976-11-19 |
AU6203673A (en) | 1975-05-01 |
SU695549A3 (ru) | 1979-10-30 |
ATA911973A (de) | 1981-02-15 |
OA04514A (fr) | 1980-03-30 |
CS200462B2 (en) | 1980-09-15 |
JPS59152211A (ja) | 1984-08-30 |
DE2355607A1 (de) | 1974-05-16 |
ES420313A1 (es) | 1976-03-16 |
PL102163B1 (pl) | 1979-03-31 |
BE806533A (fr) | 1974-04-25 |
CA1032731A (en) | 1978-06-13 |
US3972981A (en) | 1976-08-03 |
DD111883A5 (xx) | 1975-03-12 |
AT363910B (de) | 1981-09-10 |
SE7600174L (sv) | 1976-01-09 |
RO63885A (fr) | 1979-02-15 |
IT1012092B (it) | 1977-03-10 |
JPS594379B2 (ja) | 1984-01-30 |
GB1451608A (en) | 1976-10-06 |
IN141012B (xx) | 1977-01-08 |
FR2205479A1 (xx) | 1974-05-31 |
JPS49134590A (xx) | 1974-12-25 |
ZA738038B (en) | 1975-03-26 |
SE414164B (sv) | 1980-07-14 |
BR7308671D0 (pt) | 1974-08-22 |
HU168213B (xx) | 1976-03-28 |
NL7314813A (xx) | 1974-05-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SE398540B (sv) | Tapp for infestning i veggplattor av gips eller liknande material | |
IT979989B (it) | Filamenti monocristallini di solfato di calcio e relativo procedimento di produzione | |
SE389092B (sv) | Forfarande for tvettning av kristaller avkalciumsulfatanhydrit och/eller kalciumsulfathemihydrat | |
SE450958B (sv) | Forfarande for framstellning av avvattningsacceleratorer och retentionsmedel for pappersindustrin | |
AT320511B (de) | Zusatzmaterial zur Beschleunigung des Abbindens und Aushärtens von Portlandzement | |
FI55410C (fi) | Foerfarande foer bestaemning av antigener i ett vattenhaltigt prov | |
IT1029217B (it) | Procedimento e impianto per la fabbricazione di clinker di cemento | |
SE7811635L (sv) | Forfarande for framstellning av 7 -acylamino-7 -alkoxicefalosporiner eller 6 -acylamino-6 -alkoxipenicilliner | |
NO139963C (no) | Fremgangsmaate for aa gjoere overflaten av bygningsmaterialer vannavstoetende | |
FI47652C (fi) | Menetelmä fosforihapon ja kalsiumsulfaatin hemihydraatin valmistamisek si. | |
NO137963C (no) | Fremgangsmaate for fremstilling av grov gips og magnetitt | |
IT1038911B (it) | Metodo pr la fabbricazione di pannelli di gesso e simili | |
BE790083A (fr) | Procede de production de clinker de ciment et de dioxyde de soufre | |
AT335331B (de) | Aufbereitung von zementklinkermaterial | |
FI792761A (fi) | Foerfarande foer framstaellning av kalcinerad gips och gipsskivor | |
IT953935B (it) | Procedimento e dispositivo per la fabbricazione di tondini per cemen to armato | |
SE384527B (sv) | Forfarande for framstellning av vort | |
AR197959A1 (es) | Metodo para la fabricacion de clinker de cemento | |
IT1053892B (it) | Procedimento e dispositivo per la calcinazione di materiali solidi particolarmente per la produzione di cemento portland | |
AT294671B (de) | Verfahren zur kontinuierlichen herstellung von wasserfreiem calciumsulfat und calciumsulfat-semihydrat | |
NO142902C (no) | Fremgangsmaate ved fremstilling av kalsiumsulfat | |
FI780146A (fi) | Foerfarande foer framstaellning av kalciumsulfatkristallfibrer och deras anvaendning | |
AT351435B (de) | Gipsmassen | |
ATA717072A (de) | Feinst-mortel fur innen- und aussenputz | |
IT975334B (it) | Procedimento e dispositivo per la fabbricazione di lastroni di cemen to armato |