CN204240784U - A kind of rotary kiln - Google Patents
A kind of rotary kiln Download PDFInfo
- Publication number
- CN204240784U CN204240784U CN201420701069.2U CN201420701069U CN204240784U CN 204240784 U CN204240784 U CN 204240784U CN 201420701069 U CN201420701069 U CN 201420701069U CN 204240784 U CN204240784 U CN 204240784U
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- rotary kiln
- coal
- kiln
- wall
- supporting plate
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Abstract
The utility model discloses a kind of rotary kiln, comprise the tubular kiln body with inner and outer wall, described inwall encloses the kiln chamber forming rotary kiln, described rotary kiln also comprises that to be arranged at intervals at described outer wall outer and not with the supporting plate that described rotary kiln rotates, formed between described outer wall and supporting plate and dry coal space, described baking coal space has arrival end and the port of export, described in be positioned at dry coal space outer wall on be also provided with spiral pusher portion coal being driven into the port of export from arrival end.The utility model utilizes the remaining temperature of rotary kiln surface to carry out preheating to coal, eliminates the special heat energy dried needed for coal, has saved cost, reached effect of energy-saving and emission-reduction.
Description
Technical field
The utility model relates to field of metallurgy, especially relates to a kind of rotary kiln.
Background technology
In many production industries such as some metallurgy, building materials, chemical industry, environmental protection, rotary kiln is widely used in carrying out machinery, physical or chemical treatment to solid material, because its production scale is large, automatization level is high and the mineral quality of calcining is good, activity degree is high, sulfur content is low and be well received.In method for smelting magnesium by hot, the most of coal gas produced from coking or Lan Tan factory of fuel of supply rotary kiln, owing to being subject to its technogenic influence, there is the drawback such as poor quality's (calorific value is low), gas pressure instability in the coal gas produced, most magnesium factory all adopts coal dust and coal gas mixed combustion to solve above-mentioned drawback.
But the required coal dust of rotary kiln burning needs raw coal to dry, after ball milling powder process and coal gas carry out mixed combustion.In today that energy-saving and emission-reduction are important all the more, how to increase raw coal drying effect that few heat obtains and become the problem that industry expects to solve.
Utility model content
The technical problems to be solved in the utility model is: provide a kind of rotary kiln effectively utilizing waste heat.
For achieving the above object, the utility model provides following technical scheme: a kind of rotary kiln, comprise the tubular kiln body with inner and outer wall, described inwall encloses the kiln chamber forming rotary kiln, described rotary kiln also comprises that to be arranged at intervals at described outer wall outer and not with the supporting plate that described rotary kiln rotates, formed between described outer wall and supporting plate and dry coal space, described baking coal space has arrival end and the port of export, described in be positioned at dry coal space outer wall on be also provided with spiral pusher portion coal being driven into the port of export from arrival end.
Further, the axis of rotation of described rotary kiln and horizontal plane form the angle of 0-30 degree.
Further, described supporting plate is that tubular is located in the described external side of tubular kiln.
Further, described supporting plate is the below that described tubular kiln body is located in the holder of arc tabular.
Further, described in be positioned at dry coal space outer wall on be also provided with the projection making coal fragmentation, described projection is positioned at the hopper of described spiral pusher portion spiralization.
Compared with prior art, the utility model at least has the following advantages: utilize the remaining temperature of rotary kiln surface to carry out preheating to coal, eliminates the special heat energy dried needed for coal, has saved cost, reached effect of energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the utility model rotary kiln.
Fig. 2 is the tubular kiln body of the utility model rotary kiln and the structural representation of supporting plate combination.
Fig. 3 be in Fig. 2 A-A direction analyse and observe enlarged diagram.
Detailed description of the invention
Refer to Fig. 1 to Fig. 3, describe the detailed description of the invention of the utility model rotary kiln below in conjunction with accompanying drawing in detail.
The utility model rotary kiln, comprise the tubular kiln body 10 with inwall 101 and outer wall 102, described inwall 101 encloses the kiln chamber forming rotary kiln, described rotary kiln also comprises that to be arranged at intervals at described outer wall 102 outer and not with the supporting plate 20 that described rotary kiln rotates, formed between described outer wall 102 and supporting plate 20 and dry coal space 30, described baking coal space 30 has arrival end 301 and the port of export 302, described in be positioned at dry coal space 30 outer wall 102 on be also provided with the spiral pusher portion 1021 coal being driven into the port of export from arrival end.Owing to utilizing temperature more than rotary kiln surface to carry out preheating to coal, coal is dried due to the high temperature of rotary kiln surface, then through ball milling powder process, use with coal gas mixed combustion supply calcined by rotary kiln, eliminate the special heat energy dried needed for coal, saved cost, reached effect of energy-saving and emission-reduction; And in conjunction with the design in spiral pusher portion 1021, auxiliary coal moves to the port of export from the arrival end drying coal space 30.Here corresponding pitch according to the concrete preheating requirement of the concrete rotary speed of rotary kiln, serviceability temperature and coal, can be processed in spiral pusher portion 1021.
The axis of rotation L of described rotary kiln and horizontal plane form the angle of 0-30 degree.The arrival end drying coal space is located at the kiln tail (higher than kiln hood) of rotary kiln, and the port of export is located at kiln hood, and this design of conveying being beneficial to raw coal utilizes the deadweight of coal to assist and takes on material, alleviate burden and the wearing and tearing in spiral pusher portion 1021.The below of described tubular kiln body is located at by described supporting plate 20 in the holder of arc tabular.Dry the burning zone that coal space 30 is positioned at rotary kiln, described supporting plate 20 is by general steel plate welding production.Due to Action of Gravity Field, even if having stirring and the promotion in spiral pusher portion 1021, coal mainly still concentrates on the below of tubular kiln body, supporting plate 20 semicircular in shape in the present embodiment, the coated shaft core position to tubular kiln body.
Described be positioned at dry coal space 30 outer wall 102 on be also provided with the projection 1022 making the further fragmentation refinement of coal, described protruding 1022 hoppers being positioned at described spiral pusher portion 1021 spiralization.When supplying the gaseous-pressure instability of rotary kiln, combustion gas high cost or combustion gas quality difference in actual production, coal dust is used to replace a part of combustion gas, thus can well solve the problem, to avoid the problem occurring calcined product quality instability or high cost.Coal dust is finer and smoother, burns more abundant, the described design of protruding 1022, hankers in advance proceeding polishing to coal, make the further refinement of coal in stirring.
Introduce the concrete use procedure of the utility model rotary kiln below: raw coal is transported to run coal bin 4, the arrival end drying coal space 30 is transported to by bucket elevator 5, then because raw coal is transported to the port of export from the arrival end drying coal space 30 by the rotation of tubular kiln body 10 and the spiral pusher portion 1021 on rotary kiln of being welded on, at this moment raw coal is dried, be transported to pulverized coal preparation storehouse 5 by the raw coal of drying and make coal dust, supply rotary kiln burning together with the coal gas that gas supply mouth 6 provides.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.Such as, supporting plate in above-described embodiment is the below that described tubular kiln body is located in the holder of arc tabular, in some other embodiment, described supporting plate is that tubular is located in the described external side of tubular kiln, and coal can be avoided like this with the phenomenon that spills of rotation midway in spiral pusher portion.That is, all equivalent transformations of doing according to the utility model Spirit Essence or modification, all should be encompassed within protection domain of the present utility model.
Claims (5)
1. a rotary kiln, comprise the tubular kiln body with inner and outer wall, described inwall encloses the kiln chamber forming rotary kiln, it is characterized in that: described rotary kiln also comprises that to be arranged at intervals at described outer wall outer and not with the supporting plate that described rotary kiln rotates, formed between described outer wall and supporting plate and dry coal space, described baking coal space has arrival end and the port of export, described in be positioned at dry coal space outer wall on be also provided with spiral pusher portion coal being driven into the port of export from arrival end.
2. according to the rotary kiln described in claim 1, it is characterized in that: the axis of rotation of described rotary kiln and horizontal plane form the angle of 0-30 degree.
3. according to the rotary kiln described in claim 1, it is characterized in that: described supporting plate is that tubular is located in the described external side of tubular kiln.
4. according to the rotary kiln described in claim 1, it is characterized in that: described supporting plate is the below that described tubular kiln body is located in the holder of arc tabular.
5. the rotary kiln according to any one of claim 1-4, is characterized in that: described in be positioned at dry coal space outer wall on be also provided with the projection making coal fragmentation, described projection is positioned at the hopper of described spiral pusher portion spiralization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420701069.2U CN204240784U (en) | 2014-11-21 | 2014-11-21 | A kind of rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420701069.2U CN204240784U (en) | 2014-11-21 | 2014-11-21 | A kind of rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204240784U true CN204240784U (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420701069.2U Active CN204240784U (en) | 2014-11-21 | 2014-11-21 | A kind of rotary kiln |
Country Status (1)
| Country | Link |
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| CN (1) | CN204240784U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU169153U1 (en) * | 2015-12-22 | 2017-03-07 | Евгений Вадимович Кравцов | ROTARY FURNACE RETORA |
-
2014
- 2014-11-21 CN CN201420701069.2U patent/CN204240784U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU169153U1 (en) * | 2015-12-22 | 2017-03-07 | Евгений Вадимович Кравцов | ROTARY FURNACE RETORA |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |