RO84037B - PROCEDEU DE ELIMINARE A APEI EXCEDENTARE CONTINUTA îNTR-UN AMESTEC DIN GHIPS SI APA - Google Patents
PROCEDEU DE ELIMINARE A APEI EXCEDENTARE CONTINUTA îNTR-UN AMESTEC DIN GHIPS SI APAInfo
- Publication number
- RO84037B RO84037B RO104583A RO10458381A RO84037B RO 84037 B RO84037 B RO 84037B RO 104583 A RO104583 A RO 104583A RO 10458381 A RO10458381 A RO 10458381A RO 84037 B RO84037 B RO 84037B
- Authority
- RO
- Romania
- Prior art keywords
- gypsum
- water
- thermal drying
- drying
- hydration
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract 8
- 239000000203 mixture Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 241000272476 Gyps Species 0.000 title 1
- 229910052602 gypsum Inorganic materials 0.000 abstract 8
- 239000010440 gypsum Substances 0.000 abstract 8
- 238000001035 drying Methods 0.000 abstract 6
- 230000036571 hydration Effects 0.000 abstract 3
- 238000006703 hydration reaction Methods 0.000 abstract 3
- 238000007605 air drying Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 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
- C04B11/02—Methods and apparatus for dehydrating gypsum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Drying Of Solid Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Prezenta inventie se refera la un procedeu de eliminare a apei excedentare continuta într-un amestec de ghips si apa sub forma de placi sau folie continua, prin uscare termica, precedata, eventual, de operatii de filtrare si/sau uscare la aer, prin care, în scopul micsorarii duratei de uscare si al obtinerii de produse de ghips durabile, placile sau folia continua se supun unei uscari termice înainte de sfîrsitul hidratarii gipsului, uscarea termica fiind începuta în momentul cînd amestecul de ghips si apa contine 20...50% ghips rehidratat, în functie de natura ghipsului, ceea ce corespunde unui raport apa/ghips de 0,45...0,50, conferind placilor o rezistenta mecanica suficienta manipularii acestora, uscarea termica fiind întrerupta în momentul cînd produsul contine maximum 5% si, de preferinta, 1% apa excedentara în plus fata de apa necesara hidratarii, gradul de hidratare la sfîrsitul uscarii termice fiind cel putin de 30...60%, în functie de natura ghipsului.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8013497A FR2484899A1 (fr) | 1980-06-18 | 1980-06-18 | Procede et dispositif d'elimination de l'eau excedentaire d'un melange de platre et d'eau, et produits obtenus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO84037A RO84037A (ro) | 1984-05-12 |
| RO84037B true RO84037B (ro) | 1984-06-30 |
Family
ID=9243223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO104583A RO84037B (ro) | 1980-06-18 | 1981-06-15 | PROCEDEU DE ELIMINARE A APEI EXCEDENTARE CONTINUTA îNTR-UN AMESTEC DIN GHIPS SI APA |
Country Status (27)
| Country | Link |
|---|---|
| US (1) | US4383960A (ro) |
| EP (1) | EP0042349B1 (ro) |
| JP (1) | JPS5734088A (ro) |
| KR (1) | KR840001878B1 (ro) |
| AR (1) | AR224821A1 (ro) |
| AT (1) | ATE10612T1 (ro) |
| AU (1) | AU545928B2 (ro) |
| BR (1) | BR8103796A (ro) |
| CS (1) | CS236774B2 (ro) |
| DD (1) | DD159636A5 (ro) |
| DE (1) | DE3167584D1 (ro) |
| DK (1) | DK266381A (ro) |
| ES (1) | ES8300278A1 (ro) |
| FI (1) | FI69295C (ro) |
| FR (1) | FR2484899A1 (ro) |
| GR (1) | GR79962B (ro) |
| IL (1) | IL62992A (ro) |
| IN (1) | IN154786B (ro) |
| MA (1) | MA19180A1 (ro) |
| NO (1) | NO812036L (ro) |
| NZ (1) | NZ197357A (ro) |
| PH (1) | PH17531A (ro) |
| PL (1) | PL231730A1 (ro) |
| PT (1) | PT73223B (ro) |
| RO (1) | RO84037B (ro) |
| YU (1) | YU152981A (ro) |
| ZA (1) | ZA813885B (ro) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59133246A (ja) * | 1983-01-19 | 1984-07-31 | Toyobo Co Ltd | 配向ポリエステルフイルム |
| IT1183353B (it) * | 1985-02-15 | 1987-10-22 | Moplefan Spa | Dispositivo per la fabbricazione in continuo di manufatti rinforzati da impasti di leganti idraulici e relativo procedimento |
| JPS63191838A (ja) * | 1986-01-17 | 1988-08-09 | Teijin Ltd | 二軸配向ポリエステルフイルム |
| EP0261430B1 (en) | 1986-08-27 | 1999-11-24 | Teijin Limited | Biaxially oriented polyester film |
| JPS63278939A (ja) * | 1987-05-11 | 1988-11-16 | Teijin Ltd | 二軸配向ポリエステルフイルム |
| JPS63286438A (ja) * | 1987-05-19 | 1988-11-24 | Teijin Ltd | 二軸配向ポリエステルフイルム |
| JPH0659679B2 (ja) * | 1989-09-01 | 1994-08-10 | 東レ株式会社 | 二軸配向熱可塑性樹脂フイルム |
| US6509192B1 (en) * | 1992-02-24 | 2003-01-21 | Coulter International Corp. | Quality control method |
| JPH08169965A (ja) * | 1995-04-05 | 1996-07-02 | Toyobo Co Ltd | 配向ポリエステルフイルム |
| US6508895B2 (en) * | 1998-09-09 | 2003-01-21 | United States Gypsum Co | Method of producing gypsum/fiber board |
| CA2259743C (en) * | 1999-01-18 | 2006-06-13 | Westroc Inc. | Dryer control system |
| ATE368017T1 (de) | 2000-03-14 | 2007-08-15 | James Hardie Int Finance Bv | Faserzementbaumaterialien mit zusatzstoffen niedriger dichte |
| US20030164119A1 (en) * | 2002-03-04 | 2003-09-04 | Basil Naji | Additive for dewaterable slurry and slurry incorporating same |
| TW505727B (en) * | 2001-03-02 | 2002-10-11 | James Hardide Res Pty Ltd | A method and apparatus for forming a laminated sheet material by spattering |
| MXPA05003691A (es) | 2002-10-07 | 2005-11-17 | James Hardie Int Finance Bv | Material mixto de fibrocemento de densidad media durable. |
| ITMO20030174A1 (it) * | 2003-06-13 | 2004-12-14 | Morandi S R L Off | Metodo per la formatura di manufatti ceramici sostanzialmente |
| US7998571B2 (en) | 2004-07-09 | 2011-08-16 | James Hardie Technology Limited | Composite cement article incorporating a powder coating and methods of making same |
| MX2008013202A (es) | 2006-04-12 | 2009-01-09 | James Hardie Int Finance Bv | Elemento de construcción de refozado y sellado en superficies. |
| US7897079B2 (en) * | 2006-09-21 | 2011-03-01 | United States Gypsum Company | Method and apparatus for scrim embedment into wet processed panels |
| US8209927B2 (en) | 2007-12-20 | 2012-07-03 | James Hardie Technology Limited | Structural fiber cement building materials |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR448255A (fr) * | 1911-11-20 | 1913-01-27 | Ernest Leduc | Procédé de fabrication de briques et agglomérés en platre |
| DE1104419B (de) * | 1957-02-14 | 1961-04-06 | Nikolaus Wilhelm Knauf | Verfahren und Vorrichtung zur Herstellung von Baukoerpern |
| DE1771866B2 (de) * | 1968-07-23 | 1977-01-27 | Gebrüder Giulini GmbH, 6700 Ludwigshafen | Verfahren zur entfernung von ueberschuessigem wasser aus gipsformkoerpern |
| DE2212979A1 (de) * | 1972-03-17 | 1973-09-27 | Giulini Gmbh Geb | Verfahren zum trocknen von feuchten formkoerpern, insbesondere formkoerpern aus gips |
| GB1466772A (en) * | 1974-08-07 | 1977-03-09 | Low J | Castings of articles containing calcined gypsum |
| US4233368A (en) * | 1978-06-05 | 1980-11-11 | United States Gypsum Company | Method for the production of glass fiber-reinforced gypsum sheets and gypsum board formed therefrom |
-
1980
- 1980-06-18 FR FR8013497A patent/FR2484899A1/fr active Granted
-
1981
- 1981-05-28 AR AR285479A patent/AR224821A1/es active
- 1981-05-29 IL IL62992A patent/IL62992A/xx unknown
- 1981-06-04 US US06/270,228 patent/US4383960A/en not_active Expired - Fee Related
- 1981-06-08 IN IN618/CAL/81A patent/IN154786B/en unknown
- 1981-06-09 NZ NZ197357A patent/NZ197357A/xx unknown
- 1981-06-10 ZA ZA00813885A patent/ZA813885B/xx unknown
- 1981-06-15 BR BR8103796A patent/BR8103796A/pt unknown
- 1981-06-15 RO RO104583A patent/RO84037B/ro unknown
- 1981-06-16 NO NO812036A patent/NO812036L/no unknown
- 1981-06-16 DD DD81230823A patent/DD159636A5/de unknown
- 1981-06-17 CS CS814545A patent/CS236774B2/cs unknown
- 1981-06-17 MA MA19390A patent/MA19180A1/fr unknown
- 1981-06-17 GR GR65246A patent/GR79962B/el unknown
- 1981-06-17 DK DK266381A patent/DK266381A/da not_active Application Discontinuation
- 1981-06-17 FI FI811896A patent/FI69295C/fi not_active IP Right Cessation
- 1981-06-17 PT PT73223A patent/PT73223B/pt unknown
- 1981-06-17 AU AU71904/81A patent/AU545928B2/en not_active Ceased
- 1981-06-17 PL PL23173081A patent/PL231730A1/xx unknown
- 1981-06-17 ES ES503119A patent/ES8300278A1/es not_active Expired
- 1981-06-17 YU YU01529/81A patent/YU152981A/xx unknown
- 1981-06-17 PH PH25766A patent/PH17531A/en unknown
- 1981-06-18 KR KR1019810002220A patent/KR840001878B1/ko not_active Expired
- 1981-06-18 DE DE8181400977T patent/DE3167584D1/de not_active Expired
- 1981-06-18 EP EP81400977A patent/EP0042349B1/fr not_active Expired
- 1981-06-18 JP JP9311681A patent/JPS5734088A/ja active Pending
- 1981-06-18 AT AT81400977T patent/ATE10612T1/de not_active IP Right Cessation
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