CN2136249Y - Smelting furnace by well-sinking method - Google Patents
Smelting furnace by well-sinking method Download PDFInfo
- Publication number
- CN2136249Y CN2136249Y CN 92229871 CN92229871U CN2136249Y CN 2136249 Y CN2136249 Y CN 2136249Y CN 92229871 CN92229871 CN 92229871 CN 92229871 U CN92229871 U CN 92229871U CN 2136249 Y CN2136249 Y CN 2136249Y
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- CN
- China
- Prior art keywords
- furnace
- ore
- heater
- liner
- combustion chamber
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- 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 - Fee Related
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Abstract
The utility model relates to a smelting furnace in a well-sinking method, which is composed of a furnace body, a combustion chamber and a waste-heat recovering device. The utility model is characterized in that the furnace body has no furnace liner, and uses ore precast blocks as the furnace liner. The disc-shaped precast blocks are sent in the furnace through a feed inlet to form the furnace liner by that the precast blocks are superimposed with each other along the wall of the furnace. A high temperature zone in the furnace is formed by the combustion of coal powder sprayed in under high pressure, the ore furnace liner melts from a bottom layer, and a continuous melting production process is formed by the sinkage of the ore furnace liner block-by-block because of gravitational effect. The utility model has the advantages that heat generated by the smelting furnace is almost absorbed by charging, the heat radiation to the environment is little, the energy consumption is low, the furnace liner needs not to be replaced, and thus, trouble and expenses caused by repairing and replacing the furnace liner can be omitted.
Description
The utility model relates to the ore melting appartus.
Traditional iron manufacturing process carries out in blast furnace, it all has higher requirement to ore, fuel, refractory materials etc., ore must carry out the ore dressing sintering earlier, fuel is generally used coke, refractory materials needs the high temperature of 1700 ℃ of abilities, therefore when building blast furnace, must design ore dressing sintering, coking, refractory factory is supporting with it.Refractory materials particularly, because the fusing point of ore is very high, fire box temperature up to 1700 ℃ about, therefore must there be refractory liner the furnace wall, be called for short furnace lining, this furnace lining is easy to damage under high temperature gas flow impacts, and often needs to stop production to repair to change, and makes production unit increase many repair expense and spare part expense.
The purpose of this utility model is to overcome the existing in prior technology defective and provides a kind of and needn't change furnace lining replaces furnace lining with the ore prefabricated section smelting furnace by open caisson.
The utility model smelting furnace by open caisson is achieved by the following scheme: it comprises body of heater and combustion chamber, and there is opening for feed body of heater top, and furnace lining is arranged in the body of heater, and this furnace lining is that the ore prefabricated section of folded mutually by continuous interpolation, piece piece, that block-by-block sinks furnace charge system forms.There are slag notch, liquid outlet in the combustion chamber, and the spout that communicates with body of heater is located at by the fuel hopper of combustion chamber.The top of body of heater also can be provided with waste-heat recovery device.
The utility model is compared with known technology, it replaces furnace lining with furnace charge, therefore the heat that produces in the stove is almost all absorbed by furnace charge, to the environment heat radiation seldom, because material is heated evenly, the stream characteristic of stock can be stablized, just improve the quality of products, reduced energy consumption, also needn't change furnace lining, saved many because of repairing, the replacing trouble that furnace lining brought and spending quite a lot.
Accompanying drawing 1 provides structural representation of the present utility model.
Describe in further detail at remaking below the embodiment of accompanying drawing 1.
From accompanying drawing 1 as can be known, smelting furnace by open caisson is made up of body of heater, combustion chamber and waste-heat recovery device.
The furnace shell that body of heater is made by the straight cylinder steel plate (2), internal protecting wall (5), be fixed on heating panel (4) on the internal protecting wall, pre-hot air passage (3) is formed.The effect of heating panel (4) is the heat that internal protecting wall (5) is distributed is reclaimed again.Strengthen furnace wall intensity simultaneously.There is not fixedly furnace lining in the body of heater, the ore prefabricated section that the furnace charge that this furnace lining (12) is sent into from platform opening for feed (13)---a kind of continuous interpolation, piece piece is folded mutually, block-by-block sinks replaces, this prefabricated section is an in addition part of a plate-like with endoporus, its outer shape and internal protecting wall (5) are complementary, and less than the internal protecting wall internal diameter, preferred plan of the present utility model is discoid.Prefabricated section is prepared burden according to the different ore of melting, words as iron ore, the ore prefabricated section is that main raw material is equipped with Calucium Silicate powder, whipping agent, the repressed curing drying of coal dust and forms with the iron ore fragment just, and the purpose of blending whipping agent is to form numerous holes, increases and the CO contact area.The spout (7) that communicates with the pre-hot air passage of body of heater (3) is located at fuel hopper (6) side of combustion chamber.
The combustion chamber is located at the body of heater below; comprise furnace shell (2), internal protecting wall (5), flame retardant coating (10) and cold water jacket (11), its effect is a protection furnace shell (2), and the both sides, below of combustion chamber have slag notch (9) and liquid outlet (8); because the proportion of molten iron is greater than scum, so scum come-up.Coal dust adds from fuel hopper (6), is sprayed in the burner hearth internal combustion by spout (7), and flame flings ore prefabricated section endoporus, and begins its fusing.
The top of body of heater is provided with waste-heat recovery device, and its effect is a heat recuperation, i.e. the CO of combustion chamber generation
2Waste gas alternately forms hot blast through cold wind, and this hot blast sprays into the combustion chamber through pre-hot air passage (3) by spout (7), and the energy has been saved in the burning of accelerate combustion chamber.Waste-heat recovery device comprises the furnace shell identical with furnace binding (2), internal protecting wall (5), heating panel (4) and pre-hot air passage (3), communicates with hot air passage (3) in advance by the cold wind mouth (1) in the external world, and last top is provided with anti-canopy (14).
Will be in advance during melting the discoid ore prefabricated section of ready-formed send in the stove through platform opening for feed (13), the piece piece is folded mutually, formation replaces the fixedly furnace lining of refractory materials system along the furnace lining (12) of wall layer, and the combustion chamber sprays into coal dust firing by high pressure and forms thermal zone in the stove, make the fusing of ore prefabricated section, along with the fusing of bottom furnace lining, because of making the upper strata prefabricated section, action of gravity sinks to replenishing bottom naturally, continuous so reinforced, constantly fusing, form continuous production, finish the melting of ore.
Claims (3)
1, a kind of smelting furnace by open caisson, comprise body of heater and combustion chamber, there is opening for feed (13) the body of heater top, in furnace lining (12) is arranged, there are slag notch (9) and liquid outlet (8) in the combustion chamber, the spout that communicates with body of heater (7) is located at fuel hopper (6) side of combustion chamber, it is characterized in that described furnace lining (12) is that the ore prefabricated section folded mutually by continuous interpolation, piece piece, that block-by-block sinks forms.
2, smelting furnace by open caisson as claimed in claim 1, the ore prefabricated section that it is characterized in that furnace lining (12) are in addition parts of a plate-like with endoporus, and its outer shape and body of heater internal protecting wall (5) are complementary and less than internal protecting wall (5) internal diameter.
3, smelting furnace by open caisson as claimed in claim 1 or 2, it is characterized in that body of heater on the waste-heat recovery device with cold wind mouth (1) and anti-canopy (14) can be set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92229871 CN2136249Y (en) | 1992-08-04 | 1992-08-04 | Smelting furnace by well-sinking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92229871 CN2136249Y (en) | 1992-08-04 | 1992-08-04 | Smelting furnace by well-sinking method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2136249Y true CN2136249Y (en) | 1993-06-16 |
Family
ID=33773130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92229871 Expired - Fee Related CN2136249Y (en) | 1992-08-04 | 1992-08-04 | Smelting furnace by well-sinking method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2136249Y (en) |
-
1992
- 1992-08-04 CN CN 92229871 patent/CN2136249Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |