CN203068953U - Rotary kiln - Google Patents
Rotary kiln Download PDFInfo
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- CN203068953U CN203068953U CN 201320061464 CN201320061464U CN203068953U CN 203068953 U CN203068953 U CN 203068953U CN 201320061464 CN201320061464 CN 201320061464 CN 201320061464 U CN201320061464 U CN 201320061464U CN 203068953 U CN203068953 U CN 203068953U
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- rotary kiln
- kiln
- insulation layer
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Abstract
The utility model discloses a rotary kiln which is sequentially provided with a fire-resistant lining, a heat-preservation layer, a heat insulating layer and a kiln barrel outer layer from the inside out, wherein a plurality of columnar bulges are arranged in the fire-resistant lining. With the adoption of the mode, the rotary kiln can stir materials in the kiln during rotation; heat loss is reduced; and smelting is facilitated.
Description
Technical field
The utility model relates to the metal melting equipment field, is specifically related to a kind of for the rotary kiln of smelting.
Background technology
Nickel is widely used in critical material and high-technology fields such as stainless steel, high temperature alloy, catalysis, secondary cell, fuel cell as a kind of important strategic metal.Smelting the most frequently used thermal process of nickel is rotary kiln dehydration back electric furnace roasting.This technology utilization rotary kiln is removed Free water and the crystallization water in the laterite, simultaneously the nickel in the laterite is carried out to a certain degree prereduction, for electric furnace provides stable high temperature calcining, shortens the electric furnace smelting time, cuts down the consumption of energy.The inwall of rotary kiln is level and smooth in the prior art at present, when rotary kiln rotates, the material in the kiln is not had stirring action, and it is inhomogeneous often to cause material to be heated, and quality is fired in influence.And rotary kiln body commonly used is generally double-layer structure: outer layer barrel and refractory lining, because the thermal conductivity of refractory lining, heat can scatter and disappear, and causes energy loss, and causes the outer layer barrel temperature higher, causes a hidden trouble for the work workshop at rotary kiln place.
The utility model content
At above-mentioned deficiency of the prior art, main purpose of the present utility model provides a kind of rotary kiln, and this rotary kiln can stir material in the kiln in rotary course, and reduces heat and scatter and disappear, and is beneficial to smelting.
For achieving the above object, the disclosed technical scheme of the utility model is: a kind of rotary kiln, described rotary kiln is followed successively by from inside to outside: refractory lining, heat-insulation layer, thermal insulation layer and kiln cylinder body skin are provided with some columnar projections in the described refractory lining.Heat-insulation layer in the rotary kiln described in the utility model guarantees that heat does not does not scatter and disappear, and heat is concentrated on the refractory lining, is beneficial to material and is heated; Described thermal insulation layer has guaranteed that kiln cylinder body is outer field and has been heated lessly, made the outer field temperature of kiln cylinder body be unlikely to too high.Be provided with some columnar projections in the refractory lining described in the utility model, its objective is and in the rotary kiln rotary course, play the effect of stirring material, thereby material is heated evenly in rotary kiln.
Preferably, described refractory lining inwall is arranged to spirality.Refractory lining inwall described in the utility model can be arranged to spirality, so not only is beneficial to the heating of material, also is beneficial to rotation and the movement of material in rotary kiln.
Preferably, described heat-insulation layer adopts the insulating brick material to make.
Preferably, described thermal insulation layer is hollow structure.Thermal insulation layer described in the utility model is hollow structure, then better the outer refractory lining with inside of kiln cylinder body is separated, and the kiln cylinder body skin is heated seldom, prolongs the service life of rotary kiln.
The beneficial effects of the utility model are: the utility model rotary kiln can stir material in the kiln in rotary course, and reduces heat and scatter and disappear, and is beneficial to smelting.
Description of drawings
Fig. 1 is the structural representation of the utility model rotary kiln one preferred embodiment;
Each parts mark is as follows among the figure: 1-kiln cylinder body skin, 2-thermal insulation layer, 3-heat-insulation layer, 4-refractory lining, 5-columnar projections.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that protection domain of the present utility model is made more explicit defining.
Please refer to Fig. 1, embodiment: a kind of rotary kiln, described rotary kiln is followed successively by from inside to outside: refractory lining 4, heat-insulation layer 3, thermal insulation layer 2 and kiln cylinder body skin 1 are provided with some columnar projections 5 in the refractory lining 4.The purpose that columnar projections 5 is set is to play the effect of stirring material in the rotary kiln rotary course, thereby material is heated evenly in rotary kiln.
In the present embodiment, heat-insulation layer 3 adopts the insulating brick material to make.
In the present embodiment, thermal insulation layer 2 is hollow structure.Thermal insulation layer 2 in the utility model is hollow structure, then better the refractory lining 4 of kiln cylinder body outer 1 with inside is separated, and kiln cylinder body skin 1 is heated seldom, prolongs the service life of rotary kiln.
The difference of embodiment two, present embodiment and embodiment one is that refractory lining 4 inwalls are arranged to spirality.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (4)
1. a rotary kiln is characterized in that, described rotary kiln is followed successively by from inside to outside: refractory lining, heat-insulation layer, thermal insulation layer and kiln cylinder body skin are provided with some columnar projections in the described refractory lining.
2. rotary kiln according to claim 1 is characterized in that, described refractory lining inwall is arranged to spirality.
3. rotary kiln according to claim 1 and 2 is characterized in that, described heat-insulation layer adopts the insulating brick material to make.
4. rotary kiln according to claim 3 is characterized in that, described thermal insulation layer is hollow structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320061464 CN203068953U (en) | 2013-02-04 | 2013-02-04 | Rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320061464 CN203068953U (en) | 2013-02-04 | 2013-02-04 | Rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203068953U true CN203068953U (en) | 2013-07-17 |
Family
ID=48767732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320061464 Expired - Fee Related CN203068953U (en) | 2013-02-04 | 2013-02-04 | Rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203068953U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808128A (en) * | 2014-01-22 | 2014-05-21 | 洛阳洛华窑业有限公司 | Multi-layer kiln liner structure used for cylindrical rotary thermal equipment |
| CN108458348A (en) * | 2018-05-22 | 2018-08-28 | 中国电建集团河南工程有限公司 | A kind of garbage combustion device |
-
2013
- 2013-02-04 CN CN 201320061464 patent/CN203068953U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808128A (en) * | 2014-01-22 | 2014-05-21 | 洛阳洛华窑业有限公司 | Multi-layer kiln liner structure used for cylindrical rotary thermal equipment |
| CN108458348A (en) * | 2018-05-22 | 2018-08-28 | 中国电建集团河南工程有限公司 | A kind of garbage combustion device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20160204 |