FR2359649A1 - PERFECTED PROCESS FOR PROJECTING BY DRY SPRAYING CALCIUM SULPHATE HEMI-HYDRATE - Google Patents
PERFECTED PROCESS FOR PROJECTING BY DRY SPRAYING CALCIUM SULPHATE HEMI-HYDRATEInfo
- Publication number
- FR2359649A1 FR2359649A1 FR7723282A FR7723282A FR2359649A1 FR 2359649 A1 FR2359649 A1 FR 2359649A1 FR 7723282 A FR7723282 A FR 7723282A FR 7723282 A FR7723282 A FR 7723282A FR 2359649 A1 FR2359649 A1 FR 2359649A1
- Authority
- FR
- France
- Prior art keywords
- hemihydrate
- calcium sulphate
- hydrate
- projecting
- dry spraying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title abstract 3
- 238000005507 spraying Methods 0.000 title abstract 2
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 title 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 235000011132 calcium sulphate Nutrition 0.000 abstract 1
- 239000001175 calcium sulphate Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000012763 reinforcing filler Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
- B05B7/1481—Spray pistols or apparatus for discharging particulate material
- B05B7/149—Spray pistols or apparatus for discharging particulate material with separate inlets for a particulate material and a liquid to be sprayed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/40—Mixing specially adapted for preparing mixtures containing fibres
- B28C5/402—Methods
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Lining And Supports For Tunnels (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Procédé pour projeter à sec du sulfate de calcium à l'état d'hémi-hydrate en poudre. Les particules d'hémi-hydrate sont transportées par transport pneumatique à l'aide d'un tuyau souple vers un gicleur où l'on introduit de l'eau en quantites représentant d'environ 20 à 100 parties en poids pour 100 parties en poids d'hémi-hydrate, on mélange les particules d'hémi-hydrate et l'eau dans la chambre de mélange du gicleur et on applique l'hémi-hydrate mouillé en pulvérisation sur la surface à revêtir. Dans un mode de réalisation particulier, on peut mélanger des matières de charge renforçantes à l'hémi-hydrate. Le procédé selon l'invention peut être utilisé avec avantage pour appliquer un revêtement étanche sur des parois de mines qui ont tendance à s'effriter.Process for spraying dry calcium sulphate in the state of powdered hemihydrate. The hemihydrate particles are transported by pneumatic transport by means of a flexible pipe to a nozzle where water is introduced in quantities representing about 20 to 100 parts by weight per 100 parts by weight. hemihydrate, the hemihydrate particles and water are mixed in the mixing chamber of the nozzle and the wet hemihydrate is sprayed onto the surface to be coated. In a particular embodiment, reinforcing fillers can be mixed with the hemihydrate. The process according to the invention can be used with advantage to apply a waterproof coating to the walls of mines which have a tendency to crumble.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70969976A | 1976-07-29 | 1976-07-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2359649A1 true FR2359649A1 (en) | 1978-02-24 |
Family
ID=24850983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7723282A Withdrawn FR2359649A1 (en) | 1976-07-29 | 1977-07-28 | PERFECTED PROCESS FOR PROJECTING BY DRY SPRAYING CALCIUM SULPHATE HEMI-HYDRATE |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPS5317501A (en) |
| AR (1) | AR214744A1 (en) |
| AU (1) | AU2643077A (en) |
| BR (1) | BR7704888A (en) |
| CA (1) | CA1067301A (en) |
| DE (1) | DE2733540A1 (en) |
| FR (1) | FR2359649A1 (en) |
| GB (1) | GB1589994A (en) |
| IN (1) | IN146244B (en) |
| IT (1) | IT1079792B (en) |
| ZA (1) | ZA773879B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2478518A1 (en) * | 1980-03-18 | 1981-09-25 | Tegral Technology Ltd | PROCESS FOR PRODUCING CEMENTITIOUS COMPOUNDS |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3824908A1 (en) * | 1988-07-22 | 1990-02-01 | Gema Ransburg Ag | METHOD AND DEVICE FOR ELECTROSTATIC SPRAY COATING |
-
1977
- 1977-06-24 AU AU26430/77A patent/AU2643077A/en active Pending
- 1977-06-28 ZA ZA00773879A patent/ZA773879B/en unknown
- 1977-07-01 IN IN993/CAL/77A patent/IN146244B/en unknown
- 1977-07-07 AR AR268360A patent/AR214744A1/en active
- 1977-07-07 JP JP8147677A patent/JPS5317501A/en active Pending
- 1977-07-18 IT IT50327/77A patent/IT1079792B/en active
- 1977-07-20 CA CA283,159A patent/CA1067301A/en not_active Expired
- 1977-07-22 GB GB30944/77A patent/GB1589994A/en not_active Expired
- 1977-07-25 DE DE19772733540 patent/DE2733540A1/en not_active Withdrawn
- 1977-07-26 BR BR7704888A patent/BR7704888A/en unknown
- 1977-07-28 FR FR7723282A patent/FR2359649A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2478518A1 (en) * | 1980-03-18 | 1981-09-25 | Tegral Technology Ltd | PROCESS FOR PRODUCING CEMENTITIOUS COMPOUNDS |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1589994A (en) | 1981-05-28 |
| DE2733540A1 (en) | 1978-02-02 |
| CA1067301A (en) | 1979-12-04 |
| AU2643077A (en) | 1979-01-04 |
| BR7704888A (en) | 1978-08-22 |
| IT1079792B (en) | 1985-05-13 |
| AR214744A1 (en) | 1979-07-31 |
| ZA773879B (en) | 1978-05-30 |
| IN146244B (en) | 1979-03-31 |
| JPS5317501A (en) | 1978-02-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |