NL7704122A - Briquetted cement prodn. - with high calcium sulphate dihydrate content, has improved storage properties over powdered cement - Google Patents
Briquetted cement prodn. - with high calcium sulphate dihydrate content, has improved storage properties over powdered cementInfo
- Publication number
- NL7704122A NL7704122A NL7704122A NL7704122A NL7704122A NL 7704122 A NL7704122 A NL 7704122A NL 7704122 A NL7704122 A NL 7704122A NL 7704122 A NL7704122 A NL 7704122A NL 7704122 A NL7704122 A NL 7704122A
- Authority
- NL
- Netherlands
- Prior art keywords
- cement
- briquetting
- calcium sulphate
- improved storage
- sulphate dihydrate
- Prior art date
Links
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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/48—Clinker treatment
- C04B7/52—Grinding ; After-treatment of ground cement
- C04B7/522—After-treatment of ground cement
- C04B7/525—Briquetting
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Process for briquetting cement comprises (a) mixing powdered cement with 2-4 wt.% water and (b) briquetting the mixt. in a rotary or stamping press. at a press. of 1500-500 kg/cm2 to maximum density. Due to the briquetting process, the plaster modifications present (hemihydrate and anhydrite) are converted into the calcium sulphate dihydrate by the constant internal press. of the moisture present. The briquettes give higher quality concretes etc., have improved storage properties cf. standard powdered cement, are easier to transport and handling costs. No special arrangements need be made for on-site storage (in contrase to normal bags of cement which must e.g. be piled onto pallets and e.g. packaged in protective film). Generally the briquettes are comminuted to the original particle size of the cement before use, when they have the technological properties of fresh cement.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7704122A NL7704122A (en) | 1977-04-14 | 1977-04-14 | Briquetted cement prodn. - with high calcium sulphate dihydrate content, has improved storage properties over powdered cement |
BE177042A BE853981A (en) | 1977-04-14 | 1977-04-26 | BRICKET TREATED CEMENT |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7704122A NL7704122A (en) | 1977-04-14 | 1977-04-14 | Briquetted cement prodn. - with high calcium sulphate dihydrate content, has improved storage properties over powdered cement |
Publications (1)
Publication Number | Publication Date |
---|---|
NL7704122A true NL7704122A (en) | 1978-10-17 |
Family
ID=19828355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7704122A NL7704122A (en) | 1977-04-14 | 1977-04-14 | Briquetted cement prodn. - with high calcium sulphate dihydrate content, has improved storage properties over powdered cement |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE853981A (en) |
NL (1) | NL7704122A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1012123C2 (en) * | 1999-05-21 | 2000-12-04 | Grint En Zandexpl Mij V H Gebr | Method and device for manufacturing a pill-shaped semi-product, suitable as a filler for a concrete mixture. |
-
1977
- 1977-04-14 NL NL7704122A patent/NL7704122A/en not_active Application Discontinuation
- 1977-04-26 BE BE177042A patent/BE853981A/en unknown
Also Published As
Publication number | Publication date |
---|---|
BE853981A (en) | 1977-08-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BV | The patent application has lapsed |