CN202947146U - Insulation structure of metallurgical off-gas combustion pipeline - Google Patents
Insulation structure of metallurgical off-gas combustion pipeline Download PDFInfo
- Publication number
- CN202947146U CN202947146U CN 201220681230 CN201220681230U CN202947146U CN 202947146 U CN202947146 U CN 202947146U CN 201220681230 CN201220681230 CN 201220681230 CN 201220681230 U CN201220681230 U CN 201220681230U CN 202947146 U CN202947146 U CN 202947146U
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- insulation structure
- steel plate
- metallurgical
- flue gas
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Abstract
The utility model relates to an insulation structure of a metallurgical off-gas combustion pipeline. The insulation structure is characterized by being of a four-layer structure arranged concentrically; and the outermost layer is a steel plate (1), the innermost layer is a tortoiseshell net (4), and a calcium silicate layer (2) and a high-strength fireproof mullite castable layer (3) are respectively arranged between the outermost layer and the innermost layer from outside to inside. The insulation structure has the advantages of meeting a requirement of conveying the off-gas of nickel-iron pyrometallurgy, reducing the fixed asset investment of enterprises, ensuring safe and reliable service life of equipment and helping stable and safe production of the enterprises. Therefore, the insulation structure is of great significance in the energy conservation and emission reduction and the development of metallurgy industry in China.
Description
Technical field
The utility model relates to a kind of utilidor structure, especially a kind of flue gas during smelting combustion pipe insulation construction.
Background technology
Produce in the pyrometallurgical smelting process of primary nickel take the laterite nickel ore as raw material, can produce a large amount of CO in the calcining reduction process in closed submerged stove, for taking full advantage of the combustion heat energy of CO, flue gas can burn in the mineral hot furnace upper space, and some flue gas is the burning while carrying in flue.Because the burning liberated heat makes flue-gas temperature rise very highly (1400 ° of C), this is a kind of test to flue.
Existing flue generally all adopts refractory brick as liner, and flue is processed as stove, and the drawback that it brings has: long construction period; Volume is large, and Heavy Weight takies large space, increases the investment of bracket basis; Anti-wear performance is not enough, local damage easily occurs; Life-span is short, shuts down and repairs impact production.
The utility model content
The purpose of the present utility model: be intended to propose a kind of both had good thermal insulation property, inner heat-resistant, wear-resistant, possess again the space of saving, reduce cost simultaneously, improve the Novel smelting smoke combustion heat insulation structure of service life of equipment.
This flue gas during smelting combustion pipe insulation construction is characterized in that: its four-layer structure for arranging with one heart, and outermost layer is steel plate, and innermost layer is hexsteel, and above-mentioned is respectively calcium silicates flaggy and the mullite high-strength refractory cast bed of material from outside to inside between two-layer.
The skeleton of described hexsteel is rooted on steel plate.
The flue gas during smelting combustion pipe insulation construction of this four-layer structure that proposes according to above technical scheme has the following advantages:
Hexsteel and the mullite high-strength refractory cast bed of material are incorporated on the smoke combustion pipeline of ferronickel pyrometallurgical smelting, thereby realize good insulation, inner heat-resistant, wear-resistant is saved the space, and reduce cost improves service life of equipment, finally realizes the economic benefit of enterprise.
Description of drawings
Fig. 1 is cross-sectional structure schematic diagram of the present utility model;
Fig. 2 is longitudinal profile structural representation of the present utility model.
In figure: the 1-steel plate; The 2-calcium silicate board; The 3-mullite high-strength refractory cast bed of material; The 4-hexsteel.
The specific embodiment
Further describe the utility model below in conjunction with accompanying drawing.
This flue gas during smelting combustion pipe insulation construction, its structural design is described as follows:
Outermost layer is steel plate 1, and material can be Q235 or SUS304, and it can realize the sealing of flue well, and can outdoor layout, does not need extra protection;
The second layer be calcium silicate board 2 as the heat-insulation material of high temperature, existing certain intensity has again good thermo-insulation properties, it is close to the steel plate inboard, plays a part to support the mullite high-strength refractory cast bed of material.
Pour into a mould the bed of material 3 for the mullite high-strength refractory for the 3rd layer and be attached on calcium silicate board 2, have the characteristics such as wear-resisting, heat insulation, that the life-span long, construction is easy;
Innermost layer is hexsteel 4, directly contacts with flue gas, accepts the radiant heat of smoke combustion, bears the surface erosion of the particle that carries in flue gas.
The skeleton of described hexsteel is rooted on steel plate.
Even but change appears in burning fume operating mode in course of conveying, cause the interior temperature of pipeline the fluctuation up and down of certain procedures to occur, the outermost layer of this structure is steel plate, be directly exposed in air, steel plate provides enough intensity, it can absorb this change well, guarantees the safe operation of pipeline.
The present invention contains the direct completing combustion of flue gas in flue of the combustibles such as CO when having realized the closed mine heat furnace smelting, do not need extra combustion chamber or other combustion equipment; Meanwhile, its reasonable insulation construction has been realized adiabatic, wear-resisting, firm, durable function.
Use through reality and show: this smoke combustion heat insulation structure, met well the requirement that ferronickel pyrometallurgical smelting flue gas is carried, reduce the fixed assets investment of enterprise, guarantee safe and reliable equipment life, help business stability to produce safely, for the energy-saving and emission-reduction of China and the development of smelting industry, very important meaning is arranged.
Claims (2)
1. flue gas during smelting combustion pipe insulation construction, it is characterized in that: its four-layer structure for arranging with one heart, outermost layer is steel plate (1), and innermost layer is hexsteel (4), and above-mentioned is respectively calcium silicates flaggy (2) and the mullite high-strength refractory cast bed of material (3) from outside to inside between two-layer.
2. flue gas during smelting combustion pipe insulation construction as claimed in claim 1, it is characterized in that: the skeleton of described hexsteel (4) is rooted on steel plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220681230 CN202947146U (en) | 2012-12-11 | 2012-12-11 | Insulation structure of metallurgical off-gas combustion pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220681230 CN202947146U (en) | 2012-12-11 | 2012-12-11 | Insulation structure of metallurgical off-gas combustion pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202947146U true CN202947146U (en) | 2013-05-22 |
Family
ID=48422843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220681230 Expired - Fee Related CN202947146U (en) | 2012-12-11 | 2012-12-11 | Insulation structure of metallurgical off-gas combustion pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202947146U (en) |
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2012
- 2012-12-11 CN CN 201220681230 patent/CN202947146U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20130522 Termination date: 20141211 |
|
| EXPY | Termination of patent right or utility model |