GB1476963A - Production of calcined lime - Google Patents
Production of calcined limeInfo
- Publication number
- GB1476963A GB1476963A GB2431374A GB2431374A GB1476963A GB 1476963 A GB1476963 A GB 1476963A GB 2431374 A GB2431374 A GB 2431374A GB 2431374 A GB2431374 A GB 2431374A GB 1476963 A GB1476963 A GB 1476963A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- starting material
- calcium oxide
- production
- stoichiometric
- 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
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/02—Oxides or hydroxides
- C01F11/04—Oxides or hydroxides by thermal decomposition
- C01F11/06—Oxides or hydroxides by thermal decomposition of carbonates
-
- 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
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/12—Preheating, burning calcining or cooling in shaft or vertical furnaces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
1476963 Calcium oxide production F SCHOPPE 31 May 1974 24313/74 Heading ClA A process for the continuous production of particulate surface-active, calcium oxide from starting material which comprises calcium carbonate and which is in finely ground form or in the form of a sludge or other fluid-like state, comprises calcination of said calcium carbonate in the presence of preheated air and fuel, wherein the material is dispersed in a state of suspension in a chamber in an upwardly directed gas flow, the ratio of free oxygen to fuel being between 1À2 and 2À5 with respect to the stoichiometric, at least a substantial proportion of the particles of starting material being heated to calcining temperature at a rate of more than 400‹ C. per second and the calcium oxide produced thereby being drawn off from the upper end of the chamber together with the hot gas flow after a residence time in the chamber of less than one second. The starting material is preferably preheated, at a temperature at which it will react, to obtain a heated, particulate conveyable dry material. The starting material may be blown into the chamber using process waste. Air is introduced into the calcining chamber preferably at 1000- 1400‹ C. and the ratio of free O 2 present is preferably between 1À6 to 2À0 with respect to the stoichiometric.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2431374A GB1476963A (en) | 1974-05-31 | 1974-05-31 | Production of calcined lime |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2431374A GB1476963A (en) | 1974-05-31 | 1974-05-31 | Production of calcined lime |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1476963A true GB1476963A (en) | 1977-06-16 |
Family
ID=10209736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2431374A Expired GB1476963A (en) | 1974-05-31 | 1974-05-31 | Production of calcined lime |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1476963A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19739806A1 (en) * | 1997-09-10 | 1999-03-11 | Siemens Ag | Input circuit with controllable switching threshold |
NL1005746C2 (en) * | 1996-04-12 | 1999-12-03 | Pfeifer & Langen | Process for the preparation of calcium oxide from precipitated calcium carbonate and applications. |
GB2358394A (en) * | 2001-01-12 | 2001-07-25 | David Linsay Dodd | Treatment of sugar lime; growing mushrooms |
CN102730731A (en) * | 2012-07-24 | 2012-10-17 | 广西大学 | Lime powder production equipment taking bagasse as fuel |
-
1974
- 1974-05-31 GB GB2431374A patent/GB1476963A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1005746C2 (en) * | 1996-04-12 | 1999-12-03 | Pfeifer & Langen | Process for the preparation of calcium oxide from precipitated calcium carbonate and applications. |
DE19739806A1 (en) * | 1997-09-10 | 1999-03-11 | Siemens Ag | Input circuit with controllable switching threshold |
GB2358394A (en) * | 2001-01-12 | 2001-07-25 | David Linsay Dodd | Treatment of sugar lime; growing mushrooms |
GB2358394B (en) * | 2001-01-12 | 2002-01-30 | David Lindsay Dodd | Method of growing mushrooms |
CN102730731A (en) * | 2012-07-24 | 2012-10-17 | 广西大学 | Lime powder production equipment taking bagasse as fuel |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |