ITRE20080066A1 - Recupero e riutilizzo di gessi dentali - Google Patents
Recupero e riutilizzo di gessi dentaliInfo
- Publication number
- ITRE20080066A1 ITRE20080066A1 IT000066A ITRE20080066A ITRE20080066A1 IT RE20080066 A1 ITRE20080066 A1 IT RE20080066A1 IT 000066 A IT000066 A IT 000066A IT RE20080066 A ITRE20080066 A IT RE20080066A IT RE20080066 A1 ITRE20080066 A1 IT RE20080066A1
- Authority
- IT
- Italy
- Prior art keywords
- reuse
- recovery
- dental
- plasters
- dental plasters
- Prior art date
Links
- 238000011084 recovery Methods 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 2
- 238000010411 cooking Methods 0.000 claims 1
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 229910052602 gypsum Inorganic materials 0.000 description 4
- 239000010440 gypsum Substances 0.000 description 4
- 239000011505 plaster Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 150000001860 citric acid derivatives Chemical class 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 150000003892 tartrate salts Chemical class 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
- C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Dental Preparations (AREA)
Description
Testo della descrizione
Recupero del gesso utilizzato per modelli, articolatori, muffole.
Di regola, il gesso arriva nei laboratori sottoforma di polvere che viene successivamente miscelato con acqua per diventare, in ultimo, un materiale duro e quindi adatto per compiere varie tipologie di lavori in campo dentale (modelli, muffole, articolatori, monconi ecc...).
Invece di buttare, a lavoro finito, i modelli di gesso nei rifiuti, li raccolgo per riutilizzarlo.
La mia idea è stata quella di riutilizzare il gesso indurito riportandolo allo stato di polvere. Una volta compiuta questa operazione, il gesso se viene rimiscelato con acqua non ridiventa duro come prima perché ha già tutte le particelle d’acqua che gli servirebbero per raggiungere lo stato solido. Per togliere l’acqua in eccesso bisogna scaldare il modello di gesso in un forno da laboratorio da temperatura ambiente a massimo 180 gradi centigradi circa. Una volta che la polvere si è raffreddata, si può di nuovo miscelare la polvere di gesso con acqua e alcuni additivi (borati, acetati, citrati e tartrati), per poi ottenere un materiale duro utilizzabile in vari settori.
Claims (1)
- Rivendicazioni 1. Procedimento per riutilizzare gessi dentali che comprende: • Temperatura di 180° centigradi, non superiore • 30 minuti di cottura • Gradi al minuto: 15° centigradi • Acqua naturale • Additivi: borace anidro
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000066A ITRE20080066A1 (it) | 2008-07-10 | 2008-07-10 | Recupero e riutilizzo di gessi dentali |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000066A ITRE20080066A1 (it) | 2008-07-10 | 2008-07-10 | Recupero e riutilizzo di gessi dentali |
Publications (1)
Publication Number | Publication Date |
---|---|
ITRE20080066A1 true ITRE20080066A1 (it) | 2010-01-11 |
Family
ID=40637733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT000066A ITRE20080066A1 (it) | 2008-07-10 | 2008-07-10 | Recupero e riutilizzo di gessi dentali |
Country Status (1)
Country | Link |
---|---|
IT (1) | ITRE20080066A1 (it) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB260110A (en) * | 1925-11-11 | 1926-10-28 | Albert Edward Lovatt | An improved process for restoring plaster of paris to its original state after the addition of water and use |
US2418590A (en) * | 1944-05-04 | 1947-04-08 | United States Gypsum Co | Process of making anhydrous calcium sulphate |
DE2247757A1 (de) * | 1972-09-29 | 1974-04-04 | Boergardts Kg H & E | Verwertung alter gipsformen als ausgangsmaterial fuer gipsprodukte |
DE2251222A1 (de) * | 1972-10-19 | 1974-05-02 | Boergardts Kg H & E | Verfahren zur herstellung einer masse fuer die herstellung von gipsformen aus ausrangierten gipsformen |
EP0523726A1 (en) * | 1991-07-17 | 1993-01-20 | Mitsubishi Chemical Corporation | Dental gypsum composition |
WO1999012861A1 (en) * | 1997-09-06 | 1999-03-18 | Caso Limited | Reclamation of gypsum materials |
JP2001122645A (ja) * | 1999-10-27 | 2001-05-08 | Sumitomo Osaka Cement Co Ltd | 再生半水石膏の製造方法及び土壌固化材の製造方法 |
-
2008
- 2008-07-10 IT IT000066A patent/ITRE20080066A1/it unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB260110A (en) * | 1925-11-11 | 1926-10-28 | Albert Edward Lovatt | An improved process for restoring plaster of paris to its original state after the addition of water and use |
US2418590A (en) * | 1944-05-04 | 1947-04-08 | United States Gypsum Co | Process of making anhydrous calcium sulphate |
DE2247757A1 (de) * | 1972-09-29 | 1974-04-04 | Boergardts Kg H & E | Verwertung alter gipsformen als ausgangsmaterial fuer gipsprodukte |
DE2251222A1 (de) * | 1972-10-19 | 1974-05-02 | Boergardts Kg H & E | Verfahren zur herstellung einer masse fuer die herstellung von gipsformen aus ausrangierten gipsformen |
EP0523726A1 (en) * | 1991-07-17 | 1993-01-20 | Mitsubishi Chemical Corporation | Dental gypsum composition |
WO1999012861A1 (en) * | 1997-09-06 | 1999-03-18 | Caso Limited | Reclamation of gypsum materials |
JP2001122645A (ja) * | 1999-10-27 | 2001-05-08 | Sumitomo Osaka Cement Co Ltd | 再生半水石膏の製造方法及び土壌固化材の製造方法 |
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