GB404018A - Improvements in processes of and apparatus for treating solid materials with gases - Google Patents
Improvements in processes of and apparatus for treating solid materials with gasesInfo
- Publication number
- GB404018A GB404018A GB1913532A GB1913532A GB404018A GB 404018 A GB404018 A GB 404018A GB 1913532 A GB1913532 A GB 1913532A GB 1913532 A GB1913532 A GB 1913532A GB 404018 A GB404018 A GB 404018A
- Authority
- GB
- United Kingdom
- Prior art keywords
- kiln
- layer
- drum
- grate
- shoot
- 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
-
- 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
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/2016—Arrangements of preheating devices for the charge
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Furnace Details (AREA)
Abstract
In a process and apparatus for treating a layer of fine granular material of relatively high specific gravity, such as minerals, with a gas which is caused to pass through the layer, the material is charged in a layer on to a moving grate or sieve part of which serves to support the layer but from part of which it tends to fall, and the layer is held to the grate or sieve by setting up a sufficient difference of gas pressure on the two sides thereof. The material is finally discharged from the grate or sieve by reducing or eliminating the pressure difference <PICT:0404018/III/1> <PICT:0404018/III/2> <PICT:0404018/III/3> <PICT:0404018/III/4> at the point of discharge. The treatment may be for the purposes of effecting chemical reactions, heat exchange, or the removal of solid matter from the gas. Suitable granulation of the initial material may be effected by treatment with water, insufficient to form a slurry, in a crushing mill, grinding drum, or like mixing or pulverising apparatus, with subsequent drying if necessary. In one arrangement, Figs. 1 and 2, the granular material is supplied through a shoot 4 to form a layer upon the outer surface of the perforated wall of a rotary cylindrical drum 1 mounted within a fixed casing 3 and the material is prevented from falling from the underside of the cylinder by the pressure of air supplied through an opening 5 in the casing 3 and extracted axially of the cylinder through a pipe 6. At the point of discharge is provided a hood 7 connecting by a pipe 8 with the atmosphere or with a supply of compressed air. In a modified arrangement the material forms a layer upon the inner surface of the perforated wall and the air is supplied to the inside of the drum. Fig. 5 illustrates the use of the apparatus of Figs. 1 and 2 for preheating by means of the hot gases from a rotary kiln 12, granular material being fed to the kiln, the material being supplied to the drum 1 by a shoot 4 and worm conveyer 10 and held to the drum by the chimney draught, preferably increased, until it arrives beneath the hood 7 and falls into a shoot 13 delivering it into the kiln. Alternatively, the rotary grate may be built into the enlarged inlet end of the kiln, the material falling from the grate being transferred to the kiln by scoops. In this case the grate preferably rotates more rapidly than the kiln. Fig. 7 shows a modification of this arrangement in which the material is supplied by a shoot 4 and worm conveyer 10 to the inner surface of the perforated drum and on leaving the drum is delivered into the kiln by a shoot 13.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1913532A GB404018A (en) | 1932-07-06 | 1932-07-06 | Improvements in processes of and apparatus for treating solid materials with gases |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1913532A GB404018A (en) | 1932-07-06 | 1932-07-06 | Improvements in processes of and apparatus for treating solid materials with gases |
Publications (1)
Publication Number | Publication Date |
---|---|
GB404018A true GB404018A (en) | 1934-01-08 |
Family
ID=10124319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1913532A Expired GB404018A (en) | 1932-07-06 | 1932-07-06 | Improvements in processes of and apparatus for treating solid materials with gases |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB404018A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0165668A1 (en) * | 1984-04-10 | 1985-12-27 | F.L. Smidth & Co. A/S | Heat exchanger |
-
1932
- 1932-07-06 GB GB1913532A patent/GB404018A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0165668A1 (en) * | 1984-04-10 | 1985-12-27 | F.L. Smidth & Co. A/S | Heat exchanger |
EP0165667A1 (en) * | 1984-04-10 | 1985-12-27 | F.L. Smidth & Co. A/S | Heat exchanger |
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