GB1128932A - Improvements in or relating to the thermal treatment of magnesite, dolomite or lime - Google Patents
Improvements in or relating to the thermal treatment of magnesite, dolomite or limeInfo
- Publication number
- GB1128932A GB1128932A GB4306165A GB4306165A GB1128932A GB 1128932 A GB1128932 A GB 1128932A GB 4306165 A GB4306165 A GB 4306165A GB 4306165 A GB4306165 A GB 4306165A GB 1128932 A GB1128932 A GB 1128932A
- Authority
- GB
- United Kingdom
- Prior art keywords
- separators
- gas
- magnesite
- dolomite
- combustion chamber
- 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
- C04B2/10—Preheating, burning calcining or cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
- F27B15/003—Cyclones or chain of cyclones
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
1,128,932. Thermal treatment of magnesite, dolomite or lime. RHEINSTAHL ECO G.m.b.H. 11 Oct., 1965 [15 Oct., 1964], No. 43061/65. Heading C1A. Magnesite, dolomite or lime is subjected to a thermal treatment, e.g. at 1000-1670‹ C. to the point of deacidification (of magnesite, dolomite or lime) or sintering (of magnesite or dolomite) by conducting the material in the form of dust or fine granules, in counter-current with hot gas produced in a combustion chamber, through a plurality of centrifugal separators connected in series with or parallel to one another or in series/parallel arrangement relative to the flow of gas and/or the material drawn through the separators, the separators being adapted as required to be selectively connected in the said series, parallel or series/parallel arrangement by means of adjustable valves and by-pass pipes by which the material may be caused to by-pass one or more of the separators. The hot gas may be produced in an oil heated combustion chamber or a plurality of connected chambers and part of the gas drawn through the separators may be returned to the combustion chamber(s). Incompletely burnt gas may be produced in the combustion chamber and air required for complete combustion may be introduced into the gas flow at a point before or after the gas has passed through one or more of the separators. The material to be heat treated may be dried in a stream of hot gases which convey it to the separators. The residual heat in the treated material may be used to supply heat to air or other gas entering the combustion chamber. The material may be homogenized in a reaction container after the heat treatment. As shown in Fig. 2, air preheated by reaction product at 10 is passed into oil heated combustion chambers 1<SP>1</SP> and thence via cyclones 2-5 to dust extraction plant 6 where the product is recovered and passed to collecting chamber 9 and preheater 10. Combustion gases are withdrawn through the cyclones and dust extractor by means of fan 13 and partly recycled to the effluent from the combustion chambers in line 14. Material to be treated is supplied at 21 and first is dried in conduit 15. By means of valves 24, 26 and by-pass lines 25, 28 the material may be passed to line 14, line 14<SP>1</SP> or to the collector 9.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1964V0026970 DE1218927C2 (en) | 1964-10-15 | 1964-10-15 | Device for the thermal treatment of magnesite, dolomite and lime and process for their operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1128932A true GB1128932A (en) | 1968-10-02 |
Family
ID=7583043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4306165A Expired GB1128932A (en) | 1964-10-15 | 1965-10-11 | Improvements in or relating to the thermal treatment of magnesite, dolomite or lime |
Country Status (4)
| Country | Link |
|---|---|
| AT (1) | AT254754B (en) |
| CS (1) | CS152422B2 (en) |
| DE (1) | DE1218927C2 (en) |
| GB (1) | GB1128932A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2856648A1 (en) * | 1978-01-18 | 1979-07-19 | Lafarge Conseils | METHOD FOR HEAT TRANSFER AND GGF. FOR THE TREATMENT OF CEMENT RAW MATERIALS AND THE EQUIPMENT FOR CARRYING OUT THIS PROCESS |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1934389B2 (en) * | 1968-07-16 | 1981-05-07 | Přerovské strojírny N.P., Přerov | Device for burning powdery and fine-grained materials |
| DE1937533B2 (en) * | 1969-07-24 | 1981-05-27 | Rheinische Kalksteinwerke GmbH, 5603 Wülfrath | Arrangement for burning fine-grained material according to the floating gas burning process |
| US3989482A (en) * | 1971-06-11 | 1976-11-02 | Polysius Ag | Method for the removal of dust from exhaust gases |
| BE790039A (en) * | 1971-10-23 | 1973-02-01 | Rheinstahl Ag | PROCESS FOR CALCINING THE PLASTER IN A CURRENT OF HEATING GAS. ( |
| DE10224563A1 (en) * | 2002-06-03 | 2003-12-18 | Ulrich Duerasch | Three-phase method and device for calcining or for lime burning and for the thermal treatment of free-flowing bulk materials, taking into account a particularly low-carbon production |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1083748B (en) * | 1959-04-22 | 1960-06-15 | Habra Werk Ott Kg | Terminal strip for bag long seams |
| FR1371612A (en) * | 1963-10-15 | 1964-09-04 | Kloeckner Humboldt Deutz Ag | Improved installation for heating fine grain products, in particular ground raw cement |
-
1964
- 1964-10-15 DE DE1964V0026970 patent/DE1218927C2/en not_active Expired
-
1965
- 1965-03-10 AT AT212665A patent/AT254754B/en active
- 1965-10-11 GB GB4306165A patent/GB1128932A/en not_active Expired
- 1965-10-13 CS CS620365A patent/CS152422B2/cs unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2856648A1 (en) * | 1978-01-18 | 1979-07-19 | Lafarge Conseils | METHOD FOR HEAT TRANSFER AND GGF. FOR THE TREATMENT OF CEMENT RAW MATERIALS AND THE EQUIPMENT FOR CARRYING OUT THIS PROCESS |
| FR2415281A1 (en) * | 1978-01-18 | 1979-08-17 | Lafarge Conseils | HEAT TRANSFER PROCESS AND POSSIBLY TREATMENT OF A CEMENT CRU AND INSTALLATIONS FOR THE IMPLEMENTATION OF THIS PROCESS |
Also Published As
| Publication number | Publication date |
|---|---|
| CS152422B2 (en) | 1973-12-19 |
| DE1218927C2 (en) | 1973-08-09 |
| AT254754B (en) | 1967-06-12 |
| DE1218927B (en) | 1966-06-08 |
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