GB486899A - Improvements in or relating to the manufacture of refractory materials - Google Patents
Improvements in or relating to the manufacture of refractory materialsInfo
- Publication number
- GB486899A GB486899A GB3419836A GB3419836A GB486899A GB 486899 A GB486899 A GB 486899A GB 3419836 A GB3419836 A GB 3419836A GB 3419836 A GB3419836 A GB 3419836A GB 486899 A GB486899 A GB 486899A
- Authority
- GB
- United Kingdom
- Prior art keywords
- kiln
- manufacture
- slurry
- feed end
- per cent
- 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
- C04B2/102—Preheating, burning calcining or cooling of magnesia, e.g. dead burning
Abstract
In the manufacture of dead burnt magnesia or magnesia containing mixtures, a slurry of the finely divided raw material is treated in an internally-heated rotary kiln which is so operated that the gas velocity at or near the gas exit of the kiln is between 125 and 225 feet per minute. The gas velocity may be brought within the required limits by control devices by use of a kiln having a sufficiently large cross sectional area, by increasing the diameter of the kiln at the feed end, or by cooling the gases. The maximum temperature to which the charge is raised may be between 1350 and 1750 DEG C. and the temperature of the kiln at the feed end may be about 300 DEG C. In the case of magnesium oxide slurry obtained from sea water the free water content should be between 45 and 65 per cent and for dolomite slurry between 5 and 20 per cent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3419836A GB486899A (en) | 1936-12-12 | 1936-12-12 | Improvements in or relating to the manufacture of refractory materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3419836A GB486899A (en) | 1936-12-12 | 1936-12-12 | Improvements in or relating to the manufacture of refractory materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB486899A true GB486899A (en) | 1938-06-13 |
Family
ID=10362605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3419836A Expired GB486899A (en) | 1936-12-12 | 1936-12-12 | Improvements in or relating to the manufacture of refractory materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB486899A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2739345A1 (en) * | 1977-09-01 | 1979-03-08 | Salzhemmendorf Dolomitwerk | PROCESS FOR THE PROCESSING OF FINE-GRAINED CALCIUM EARTH, IN PARTICULAR OF FINE-GRAIN CAUSTIC FIRED DOLOMITE ARISING IN SHAFT FURNACES |
-
1936
- 1936-12-12 GB GB3419836A patent/GB486899A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2739345A1 (en) * | 1977-09-01 | 1979-03-08 | Salzhemmendorf Dolomitwerk | PROCESS FOR THE PROCESSING OF FINE-GRAINED CALCIUM EARTH, IN PARTICULAR OF FINE-GRAIN CAUSTIC FIRED DOLOMITE ARISING IN SHAFT FURNACES |
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