MX3470E - Procedimiento y aparato mejorados para la transformacion termica de yeso - Google Patents
Procedimiento y aparato mejorados para la transformacion termica de yesoInfo
- Publication number
- MX3470E MX3470E MX100390U MX10039076U MX3470E MX 3470 E MX3470 E MX 3470E MX 100390 U MX100390 U MX 100390U MX 10039076 U MX10039076 U MX 10039076U MX 3470 E MX3470 E MX 3470E
- Authority
- MX
- Mexico
- Prior art keywords
- bed
- plaster
- gypsum
- carried out
- fluidized
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
-
- 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
- C04B11/028—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained
- C04B11/0283—Fluidised beds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
La presente invención se refiere a procedimiento mejorado para la transformación térmica del yeso para convertirlo en semi-hidrato por calentamiento indirecto en lecho de fluidizado, caracterizado porque se efectúa en combinacion y en forma continua: la fluidización continua del yeso finamente divido mediante en gas constituído esencialmente por aire. Se aplica una velocidad de alimentación de gas de fluidización comprendida entre la velocidad minima teórica debajo de aquella en que el lecho está en reposo y aproximadamente seis veces está velocidad; se efectúa un desplazamiento esencialmente horizontal del material de un extremo al otro del lecho fluido simultaneamente con el avance de la reacción deshidratadora. Se efectúa una aportación de calorías mediante elementos calentadores sumergidos en el lecho fluido de tal modo que existe una diferencia de temperatura de varias decenas de °C, entre la temperatura media de cada elemento calentador y el material fluidizado; se efectúa la eliminación del vapor de agua producido por la reacción, y se recoge en el extremo de salida del lecho fluido un producto transformado de una manera practicamente total en semi-hidrato que tiene propiedades convenientes para un emplasto de pre-farbicación.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7516119A FR2311764A1 (fr) | 1975-05-23 | 1975-05-23 | Procede et appareil pour la transformation thermique de gypse |
Publications (1)
Publication Number | Publication Date |
---|---|
MX3470E true MX3470E (es) | 1980-12-09 |
Family
ID=9155595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX100390U MX3470E (es) | 1975-05-23 | 1976-05-31 | Procedimiento y aparato mejorados para la transformacion termica de yeso |
Country Status (11)
Country | Link |
---|---|
US (1) | US4247518A (es) |
JP (1) | JPS52795A (es) |
BR (1) | BR7603245A (es) |
DE (1) | DE2622994B2 (es) |
FR (1) | FR2311764A1 (es) |
GB (2) | GB1549029A (es) |
GR (1) | GR58250B (es) |
IT (1) | IT1061560B (es) |
MX (1) | MX3470E (es) |
TR (1) | TR19196A (es) |
ZA (1) | ZA763014B (es) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2727544C2 (de) * | 1977-06-18 | 1987-01-22 | Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck | Verfahren zum Trocknen und Brennen von Gips-Dihydrat zu Gips-Halbhydrat |
CH645083A5 (de) * | 1980-05-20 | 1984-09-14 | Escher Wyss Ag | Verfahren und vorrichtung zum rekalzinieren einer calciumkarbonat enthaltenden schlaemme. |
JPS5745335A (en) * | 1980-09-02 | 1982-03-15 | Mitsui Eng & Shipbuild Co Ltd | Heating fluidized bed reactor |
US4475884A (en) * | 1982-11-30 | 1984-10-09 | The United States of America as represented by the United States _Department of Energy | Reversed flow fluidized-bed combustion apparatus |
US4503018A (en) * | 1983-02-14 | 1985-03-05 | Davy Mckee Corporation | Desulfurization of phosphogypsum |
US4533528A (en) * | 1983-07-15 | 1985-08-06 | United States Gypsum Company | Process for continuously calcining gypsum to low dispersed consistency stucco |
CA1258961A (en) * | 1984-09-17 | 1989-09-05 | Yoshihiko Kudo | PROCESS FOR PRODUCING .alpha.-FORM GYPSUM HEMIHYDRATE |
US4946658A (en) * | 1986-11-06 | 1990-08-07 | Florida Institute Of Phosphate Research | Addition of pyritic materials to feed mix for desulfurization of phosphogypsum |
DE3721421A1 (de) * | 1987-06-29 | 1989-01-12 | Deutsche Filterbau | Verfahren zum herstellen von trockenen kalzium-sulfatdihydraten aus rauchgasgips |
DE3738301A1 (de) * | 1987-11-11 | 1989-05-24 | Peters Ag Claudius | Verfahren und vorrichtung zum brennen von gips |
GB2214836B (en) * | 1988-02-08 | 1991-06-26 | Bpb Industries Plc | Improvements in method and apparatus for calcination |
US4917024A (en) * | 1989-05-24 | 1990-04-17 | Florida Institute Of Phosphate Research | Coal fired power plant with pollution control and useful byproducts |
US5198029A (en) * | 1989-08-01 | 1993-03-30 | Gte Products Corporation | Apparatus for coating small solids |
GB8917963D0 (en) * | 1989-08-05 | 1989-09-20 | Scras | Apparatus for repeated automatic execution of a thermal cycle for treatment of biological samples |
DD296058A5 (de) * | 1990-02-19 | 1991-11-21 | Veb Zementwerke Ruedersdorf,De | Verfahren zum dehydratisieren von anfallgipsen |
US5143698A (en) * | 1990-03-05 | 1992-09-01 | Uop | Apparatus for internal backmix cooling |
FR2660303B1 (fr) * | 1990-03-27 | 1992-07-17 | Electricite De France | Procede et dispositif de formation d'oxyde de calcium. |
US5139749A (en) * | 1990-06-22 | 1992-08-18 | Tas, Inc. | Fluidized calcining process |
DE4109743C2 (de) * | 1991-03-25 | 1995-03-23 | Escher Wyss Gmbh | Verfahren zur thermischen Behandlung von feuchten Hydraten |
AT397929B (de) * | 1992-12-04 | 1994-08-25 | Chemiefaser Lenzing Ag | Verfahren und anlage zur trocknung und anschliessenden spaltung |
US5743728A (en) * | 1995-08-15 | 1998-04-28 | Usg Corporation | Method and system for multi-stage calcining of gypsum to produce an anhydrite product |
DE19606075C2 (de) * | 1996-02-19 | 2000-02-17 | Sulzer Chemtech Gmbh | Verfahren und Vorrichtungen zur thermischen Behandlung von Gips |
DE19627249C2 (de) * | 1996-07-08 | 2002-01-17 | Sicowa Verfahrenstech | Verfahren zur Herstellung von praktisch phasenreinem Calciumsulfat-beta-Halbhydrat |
FR2836913B1 (fr) * | 2002-03-08 | 2006-11-24 | Lafarge Platres | Dispositif de sechage et/ou cuisson de gypse |
EP1726575A1 (en) * | 2005-05-27 | 2006-11-29 | Promat International N.V. | Method for plaster production and plaster product obtained by said method. |
US8388926B2 (en) | 2006-01-13 | 2013-03-05 | Certainteed Gypsum, Inc. | System and method for the production of gypsum using heat recovery |
WO2007084346A2 (en) * | 2006-01-13 | 2007-07-26 | Certainteed Gypsum, Inc. | System and method for the production of alpha type gypsum using heat recovery |
EP2254837A4 (en) * | 2008-02-19 | 2012-01-25 | United States Gypsum Co | METHOD AND APPARATUS FOR PRESSURE CALCINATION OF GYPSUM |
EP2163532A1 (de) * | 2008-09-11 | 2010-03-17 | Claudius Peters Technologies GmbH | Verfahren und Anlage zur Herstellung von Hartgips |
US7897134B1 (en) * | 2009-08-07 | 2011-03-01 | Alstom Technology Ltd | System and method for calcining gypsum |
CN102491659B (zh) * | 2011-12-02 | 2013-03-27 | 宋乐柱 | 一种流化床式石膏煅烧装置 |
CN115594428B (zh) * | 2022-10-26 | 2023-11-24 | 宜都兴发化工有限公司 | 一种磷石膏mvr干燥装置及方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2498405A (en) * | 1946-03-11 | 1950-02-21 | Jeffrey Mfg Co | Continuous vibrating reaction chamber |
US2797908A (en) * | 1956-05-10 | 1957-07-02 | Zubrzycki Boleslaw Joseph | Zoning device for horizontal fluo-solid beds |
NL274784A (es) * | 1961-02-14 | |||
NL136768C (es) * | 1962-02-27 | |||
US3869256A (en) * | 1972-09-28 | 1975-03-04 | Atomic Energy Commission | Continuous fluid bed reactor for fissionable material |
GB1504282A (en) * | 1974-02-16 | 1978-03-15 | Farrel Bridge Ltd | Methods of and apparatus for treating particulate material with a gas |
-
1975
- 1975-05-23 FR FR7516119A patent/FR2311764A1/fr active Granted
-
1976
- 1976-05-20 GR GR50769A patent/GR58250B/el unknown
- 1976-05-20 TR TR19196A patent/TR19196A/xx unknown
- 1976-05-20 JP JP51058459A patent/JPS52795A/ja active Granted
- 1976-05-20 ZA ZA763014A patent/ZA763014B/xx unknown
- 1976-05-21 GB GB21196/76A patent/GB1549029A/en not_active Expired
- 1976-05-21 GB GB39419/77A patent/GB1549030A/en not_active Expired
- 1976-05-21 DE DE2622994A patent/DE2622994B2/de active Granted
- 1976-05-21 IT IT49595/76A patent/IT1061560B/it active
- 1976-05-21 BR BR3245/76A patent/BR7603245A/pt unknown
- 1976-05-31 MX MX100390U patent/MX3470E/es unknown
-
1979
- 1979-04-16 US US06/030,514 patent/US4247518A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE2622994C3 (es) | 1979-01-18 |
ZA763014B (en) | 1977-04-27 |
DE2622994B2 (de) | 1978-05-24 |
FR2311764A1 (fr) | 1976-12-17 |
GB1549029A (en) | 1979-08-01 |
GB1549030A (en) | 1979-08-01 |
JPS52795A (en) | 1977-01-06 |
US4247518A (en) | 1981-01-27 |
FR2311764B1 (es) | 1980-07-11 |
GR58250B (en) | 1977-08-31 |
IT1061560B (it) | 1983-04-30 |
DE2622994A1 (de) | 1976-12-09 |
JPS5413437B2 (es) | 1979-05-30 |
TR19196A (tr) | 1978-06-01 |
BR7603245A (pt) | 1977-01-25 |
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