GB976085A - Method for producing a lime hydrate - Google Patents
Method for producing a lime hydrateInfo
- Publication number
- GB976085A GB976085A GB843761A GB843761A GB976085A GB 976085 A GB976085 A GB 976085A GB 843761 A GB843761 A GB 843761A GB 843761 A GB843761 A GB 843761A GB 976085 A GB976085 A GB 976085A
- Authority
- GB
- United Kingdom
- Prior art keywords
- quicklime
- water
- carbon dioxide
- flue gas
- lime
- 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.)
- Expired
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
- C04B2/00—Lime, magnesia or dolomite
- C04B2/02—Lime
- C04B2/04—Slaking
-
- 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
- C04B2/00—Lime, magnesia or dolomite
- C04B2/02—Lime
- C04B2/04—Slaking
- C04B2/06—Slaking with addition of substances, e.g. hydrophobic agents ; Slaking in the presence of other compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Dry powdery hydrated lime is produced by contacting a fast acting quicklime with watervapour and a carbon dioxide to form a dry film thereon, controlling the time and temperature of contact so that per square metre of surface area of said quicklime, having a hydration time of less than one minute, not more than 5 x 10-4 mols. of water and not more than 2 x 10-4 mols. of carbon dioxide combine, whereby the slaking time is increased by at least 100%, and thereafter hydrating said treated particles of quicklime with water essentially in the liquid state to form a substantially dry powdery lime hydrate. A preferred mixture is provided by flue gas containing carbon dioxide and water vapour, the quicklime undergoing treatment being at 250-450 DEG F., the flue gas between 212 DEG to 1000 DEG F. The hydration is preferably carried out under pressure with a small excess of water over the theoretical amount required and the slaked lime is preferably dried by dispersion in an atmosphere wherein the excess water is converted into the vapour phase. The dry powdery lime hydrate may be clustered by pounding between surfaces. The examples illustrate both the use of steam, and a mixture of steam and carbon dioxide resulting from a flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB843761A GB976085A (en) | 1961-03-08 | 1961-03-08 | Method for producing a lime hydrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB843761A GB976085A (en) | 1961-03-08 | 1961-03-08 | Method for producing a lime hydrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB976085A true GB976085A (en) | 1964-11-25 |
Family
ID=9852479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB843761A Expired GB976085A (en) | 1961-03-08 | 1961-03-08 | Method for producing a lime hydrate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB976085A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005100247A1 (en) * | 2004-04-16 | 2005-10-27 | Flsmidth A/S | Method and apparatus for hydration of a particulate or pulverulent material containing cao, hydrated product, and use of the hydrated product |
| EP3166397B1 (en) | 2014-07-10 | 2020-10-07 | S.A. Lhoist Recherche Et Developpement | Delayed reactivity quicklime, process for manufacturing same and use thereof |
-
1961
- 1961-03-08 GB GB843761A patent/GB976085A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005100247A1 (en) * | 2004-04-16 | 2005-10-27 | Flsmidth A/S | Method and apparatus for hydration of a particulate or pulverulent material containing cao, hydrated product, and use of the hydrated product |
| JP2007532463A (en) * | 2004-04-16 | 2007-11-15 | エフエルシュミッド エー／エス | Method and apparatus for hydrating particulate or powdered material containing CaO, hydrate, and use of hydrate |
| US7595037B2 (en) | 2004-04-16 | 2009-09-29 | Flsmidth A/S | Method and apparatus for hydration of a particulate or pulverulent material containing CaO, hydrated product, and use of hydrated product |
| CN1942400B (en) * | 2004-04-16 | 2010-11-10 | Fl史密斯公司 | Method and apparatus for hydration of a particulate or pulverulent material containing cao, hydrated product, and use of the hydrated product |
| EP3166397B1 (en) | 2014-07-10 | 2020-10-07 | S.A. Lhoist Recherche Et Developpement | Delayed reactivity quicklime, process for manufacturing same and use thereof |
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