CN202925045U - Flash smelting device for iron - Google Patents
Flash smelting device for iron Download PDFInfo
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- CN202925045U CN202925045U CN 201220257249 CN201220257249U CN202925045U CN 202925045 U CN202925045 U CN 202925045U CN 201220257249 CN201220257249 CN 201220257249 CN 201220257249 U CN201220257249 U CN 201220257249U CN 202925045 U CN202925045 U CN 202925045U
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Abstract
The utility model discloses a flash smelting furnace. The flash smelting furnace comprises a reaction tower, a furnace charge spray nozzle, a smelting pool and a flue, wherein a reaction space is defined in the reaction tower, the furnace charge spray nozzle is arranged on the top of the reaction tower, the smelting pool is arranged on the lower part of the reaction tower and used for containing melt, which falls off after reacting in the reaction space, and ensuring that the melt is subjected to subsequent reduction reaction, and the flue is communicated with the reaction tower through the smelting pool and used for exhausting flue gases produced during reaction. The flash smelting furnace disclosed by the embodiments of the utility model can be effectively applied to the flash smelting of iron.
Description
Technical field
The utility model relates to field of metallurgy.Particularly, the present invention relates to a kind of metallurgical device of flash of iron.More specifically, the present invention relates to a kind of flash smelting furnace.
Background technology
Oneself has the history in more than 200 year blast furnace process, and it remains the most basic iron-smelting process in the whole world at present.It is comprised of operations such as pelletizing, drying, sintering, fragmentation, smeltings, so long flow path, investment is large, energy consumption is high.
Thereby present ironmaking equipment and method still remain to be improved.
The utility model content
The utility model is intended to solve at least one of technical problem that exists in the prior art.
For this reason, a purpose of the present utility model is to propose a kind of metallurgical device---flash smelting furnace of flash of iron, and the low and operating safety of described flash smelting furnace cost can be used for ironmaking effectively.
To achieve these goals, according to an aspect of the present utility model, the utility model provides a kind of flash smelting furnace.According to embodiment of the present utility model, this flash smelting furnace comprises: reaction tower is limited with reaction compartment in this reaction tower; The furnace charge nozzle, this furnace charge nozzle is arranged on the reaction tower top; The molten bath, this molten bath is arranged on the bottom of reaction tower, is used for holding the melt that falls after the reaction compartment reaction and the subsequent reactions that carries out melt; And flue, this flue is connected with reaction tower by the molten bath, is used for discharging the flue gas that reaction process produces.Utilization can be carried out melting to iron sand effectively according to the flash smelting furnace of the utility model embodiment.
According to embodiment of the present utility model, above-mentioned flash smelting furnace can also have following additional technical feature:
According to an embodiment of the present utility model, reaction tower and molten bath one of at least by be selected from refractory brick, amorphous refractory materials adds at least a of water wall and makes.
According to an embodiment of the present utility model, reaction tower further is provided with refractory brick damascene copper water jacket or water wall, or open fire formula water-cooled protecting device is set.
According to an embodiment of the present utility model, the internal diameter of reaction tower can be 3-16 rice, highly can be 6-10 rice, and preferably, the internal diameter of reaction tower is 10 meters, highly is 8 meters.
According to an embodiment of the present utility model, the transverse section of reaction tower be selected from circular and square at least a.
According to an embodiment of the present utility model, the material that described furnace charge nozzle sprays comprises iron sand, fuel and oxygen.
According to an embodiment of the present utility model, the top in the described molten bath is formed with the filtering layer that the melting furnace charge falls must pass through, and described filtering layer is mainly formed by coke.
Different with traditional blast furnace ironmaking, utilization is according to the flash smelting furnace of the utility model embodiment, can be with granularity less than 1mm, iron sand with Powdered drying of huge specific surface area, without pelletizing, sintering and fragmentation, directly with fuel and oxygen together, nozzle through being arranged on the reaction tower top sprays at a high speed red-hot reaction tower space, and be afloat and descend, promptly be heated in about 1200 ℃, high price ferriferous oxide in the iron sand partly is reduced at a low price ferriferous oxide and part metals iron, and descends slowly and lightly in the molten bath of reaction tower bottom.At the molten bath internal upper part filtering layer of the about 1550 ℃ of red-hot coke of one deck or other carbonaceous is arranged, also be provided with the side-blown nozzle of fine coal or other reductive agents at molten bath filtering layer side wall, and adopt the oxygen-rich air of high temperature or normal temperature.Ferriferous oxide further is reduced into metallic iron at filtering layer at a low price.The metallic iron and the slag layering in the molten bath that generate, continuous or periodic discharge.The flue gas that generates discharges after firing formula waste heat boiler and dedusting again, or send hotblast stove to make fuel.
According to another aspect of the present utility model, the utility model provides a kind of iron smelting method.According to embodiment of the present utility model, the method comprises the flash smelting furnace that uses according to the utility model embodiment, and iron sand is carried out flash smelting.Different with traditional blast furnace ironmaking, iron smelting method according to the utility model embodiment, with granularity less than 1mm, iron sand with Powdered drying of huge specific surface area, without pelletizing, sintering and fragmentation, directly with fuel and oxygen together, nozzle through being arranged on the reaction tower top sprays at a high speed red-hot reaction tower space, and be afloat and descend, promptly be heated in about 1200 ℃, high price ferriferous oxide in the iron sand is reduced at a low price ferriferous oxide and part metals iron, and descends slowly and lightly in the molten bath of reaction tower bottom.The filtering layer of the about 1550 ℃ of red-hot coke of one deck or other carbonaceous is arranged at the top in the molten bath, also is provided with the side-blown nozzle of fine coal or other reductive agents at molten bath filtering layer side wall, and adopts the oxygen-rich air of high temperature or normal temperature.Ferriferous oxide further is reduced into metallic iron at a low price.The metallic iron and the slag layering in the molten bath that generate, continuous or periodic discharge.The flue gas that generates discharges after firing formula waste heat boiler and dedusting again, or send hotblast stove to make fuel.
According to embodiment of the present utility model, above-mentioned iron smelting method can also have following additional technical feature:
According to an embodiment of the present utility model, iron sand is that ferrous grade is 40 ~ 70% iron sand, and its granularity is less than 1mm, and water-content is lower than 1%.
According to an embodiment of the present utility model, the fuel that flash smelting is adopted is gas, liquid, solid or propellant combination.
According to an embodiment of the present utility model, further comprise in the reaction tower space adding slag making flux.
Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Description of drawings
Above-mentioned and/or additional aspect of the present utility model and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 and Fig. 2 are the structural representations according to the ironmaking flash smelting furnace of the utility model embodiment; And
Fig. 3 is the equipment flowsheet according to the iron smelting method of an embodiment of the utility model.
Embodiment
The below describes embodiment of the present utility model in detail, and the example of described embodiment is shown in the drawings, and wherein identical or similar label represents identical or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " vertically ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only be for convenience of description the utility model and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance.
In description of the present utility model, unless otherwise prescribed and limit, need to prove that term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly to link to each other, and also can indirectly link to each other by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
Flash smelting furnace
Below with reference to Fig. 1 flash smelting furnace 600 according to the utility model embodiment is described:
As shown in Figure 1, the flash smelting furnace 600 according to the utility model embodiment comprises above-mentioned reaction tower 100, furnace charge nozzle 200, molten bath 300 and flue 400.Furnace charge nozzle 200 is arranged on the reaction tower 100, is limited with reaction compartment in the reaction tower 100, and molten bath 300 is arranged on the bottom of reaction tower 100, is used for holding the melt and the melt that fall after the reaction compartment reaction and makes subsequent reactions.Flue 400 is connected with reaction tower 100 by molten bath 300, is used for discharging the flue gas that reaction process produces.
Different with traditional blast furnace ironmaking, utilization is according to the flash smelting furnace of the utility model embodiment, can be with granularity less than 1mm, iron sand with Powdered drying of huge specific surface area, without pelletizing, sintering and fragmentation, directly with fuel and oxygen together, nozzle through being arranged on the reaction tower top sprays at a high speed red-hot reaction tower space, and be afloat and descend, promptly be heated in about 1200 ℃, high price ferriferous oxide in the iron sand partly is reduced at a low price ferriferous oxide and part metals iron, and descends slowly and lightly in the molten bath of reaction tower bottom.The filtering layer of the red-hot coke of one deck or other carbonaceous is arranged at the top in the molten bath, and ferriferous oxide further is reduced into metallic iron at a low price.The metallic iron and the slag layering in the molten bath that generate, continuous or periodic discharge.The flue gas that generates discharges after firing formula waste heat boiler and dedusting again, or send hotblast stove to make fuel.
According to embodiment of the present utility model, make the material in reaction tower and molten bath and be not particularly limited.According to an embodiment of the present utility model, reaction tower and molten bath one of at least by being selected from by the refractory brick of having inlayed copper water jacket or water wall, or adopt at least a of amorphous refractory materials to make.Wherein, according to an embodiment of the present utility model, refractory brick damascene copper water jacket.
According to embodiment of the present utility model, reaction tower further is provided with tubular type formula water-cooled protecting device.According to embodiment of the present utility model, the size of reaction tower also is not particularly limited.At an embodiment of the present utility model, the internal diameter of reaction tower can be 3-16 rice, highly can be 6-10 rice, and preferably, the internal diameter of reaction tower is 10 meters, highly is 8 meters.At an embodiment of the present utility model, the transverse section of reaction tower be selected from circular and square at least a.
In addition, according to embodiment of the present utility model, the number of furnace charge nozzle and type also are not particularly limited.Can use a furnace charge nozzle that all the components is all sprayed into, also can use dissimilar furnace charge nozzles to spray into respectively reactant.For example, at an embodiment of the present utility model, described furnace charge nozzle ejection comprises furnace charge, fuel and oxygen.
For example, according to an embodiment of the present utility model, the reaction tower of ironmaking Flash Smelting Furnace is by the laying fireproof bricks of having inlayed copper water jacket or water wall, 10 meters of reaction tower inside diameters, 8 meters of internal height, top are provided with 3 furnace charge nozzles, per hour spray into altogether furnace charge 600-700 ton.According to an embodiment of the present utility model, it is fuel that Sweet natural gas is adopted in the reaction tower of ironmaking Flash Smelting Furnace and molten bath, and the filtering layer in molten bath is coke.According to embodiment of the present utility model, at the side wall in molten bath of ironmaking Flash Smelting Furnace, be provided with the nozzle of 24 side-blown fine coal.According to an embodiment of the present utility model, the surface in the molten bath is formed with filtering layer, and this filtering layer is formed by coke.
According to embodiment of the present utility model, a Flash Smelting Furnace is produced ten thousand tons of metallic iron 100-1000 per year.Compare with blast furnace ironmaking, will save and build occupation of land 50%, save investment 60%, synthesis energy saving 25～35%.
Iron smelting method
With reference to figure 2 and Fig. 3, according to another aspect of the present utility model, the utility model provides a kind of iron smelting method.According to embodiment of the present utility model, the method comprises the flash smelting furnace that uses according to the utility model embodiment, and iron sand is carried out flash smelting.Different with traditional blast furnace ironmaking, iron smelting method according to the utility model embodiment, with granularity less than 1mm, iron sand with Powdered drying of huge specific surface area, without pelletizing, sintering and fragmentation, directly with fuel and oxygen together, furnace charge nozzle through being arranged on the reaction tower top sprays at a high speed red-hot reaction tower space, and be afloat and descend, promptly be heated in about 1200 ℃, high price ferriferous oxide in the iron sand is reduced at a low price ferriferous oxide and part metals iron, and descends slowly and lightly in the molten bath of reaction tower bottom.The about 1550 ℃ red-hot coke of one deck or the filtering layer of other carbonaceous are arranged at the top in the molten bath, and ferriferous oxide at a low price further is reduced into metallic iron.Also be provided with the side-blown nozzle of fine coal or other reductive agents at the molten bath side wall.The metallic iron and the slag layering in the molten bath that generate, continuous or periodic discharge.The flue gas that generates discharges after firing formula waste heat boiler and dedusting again, or send hotblast stove to make fuel.
According to embodiment of the present utility model, utilize iron smelting method of the present utility model, the type of the iron sand that can process also is not particularly limited.According to an embodiment of the present utility model, the iron sand ferrous grade is 40 ~ 70%, and the granularity of iron sand is less than 1mm, moisturely is lower than 1%.According to an embodiment of the present utility model, the fuel that flash smelting is adopted is gas, liquid or solid fuel.Also can spray into gas, liquid or solid reductive agent by nozzle.According to embodiment of the present utility model, at the side wall in molten bath of ironmaking Flash Smelting Furnace, be provided with the nozzle of side-blown fine coal and oxygen-rich air.In addition, according to an embodiment of the present utility model, the top in the molten bath is formed with filtering layer, and this filtering layer is made by coke.In addition, according to an embodiment of the present utility model, further comprise in reaction compartment adding slag making flux.
According to embodiment of the present utility model, the front is equally applicable to iron smelting method of the present utility model about the described feature and advantage of flash smelting furnace, does not repeat them here.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or the example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple variation, modification, replacement and modification to these embodiment in the situation that does not break away from principle of the present utility model and aim, scope of the present utility model is limited by claim and equivalent thereof.
Claims (8)
1. the metallurgical device of the flash of an iron is characterized in that, comprising:
Reaction tower is limited with reaction compartment in the described reaction tower;
The furnace charge nozzle, described furnace charge nozzle is arranged on described reaction tower top;
The molten bath, described molten bath is arranged on the bottom of described reaction tower, be used for holding the melt that falls after the described reaction compartment reaction, and melt carries out follow-up reduction reaction; And
Flue, described flue is connected with described reaction tower by described molten bath, is used for discharging the flue gas that reaction process produces.
2. the metallurgical device of the flash of iron according to claim 1 is characterized in that, the making by being selected from least a of refractory brick or amorphous refractory materials one of at least of described reaction tower and molten bath.
3. the metallurgical device of the flash of iron according to claim 2 is characterized in that described refractory brick damascene copper water jacket or water wall are protected, or open fire formula water-cooled protecting device is set.
4. flash smelting furnace according to claim 2 is characterized in that, the internal diameter of described reaction tower is 3-16 rice, highly is 6-10 rice.
5. the metallurgical device of the flash of iron according to claim 1 is characterized in that, the transverse section of described reaction tower be selected from circular and square at least a.
6. the metallurgical device of the flash of iron according to claim 1 is characterized in that the material of described furnace charge nozzle ejection comprises iron sand, fuel and oxygen etc.
7. the metallurgical device of the flash of iron according to claim 1 is characterized in that the top in the described molten bath is formed with the filtering layer that the melting furnace charge falls must pass through, and described filtering layer is mainly formed by coke.
8. the metallurgical device of the flash of iron according to claim 1 is characterized in that, also is provided with the side-blown nozzle of pulverized coal injection or other reductive agents and high temperature or normal temperature oxygen-rich air around the side wall of furnace wall, described molten bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220257249 CN202925045U (en) | 2012-06-01 | 2012-06-01 | Flash smelting device for iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220257249 CN202925045U (en) | 2012-06-01 | 2012-06-01 | Flash smelting device for iron |
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| Publication Number | Publication Date |
|---|---|
| CN202925045U true CN202925045U (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220257249 Expired - Lifetime CN202925045U (en) | 2012-06-01 | 2012-06-01 | Flash smelting device for iron |
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| CN (1) | CN202925045U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993115A (en) * | 2014-04-22 | 2014-08-20 | 邱江波 | Drying and reducing integrated flash ironmaking apparatus and ironmaking method |
| CN104928492A (en) * | 2015-06-15 | 2015-09-23 | 中国瑞林工程技术有限公司 | Flash side-blowing smelting device and flash side-blowing smelting method |
-
2012
- 2012-06-01 CN CN 201220257249 patent/CN202925045U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993115A (en) * | 2014-04-22 | 2014-08-20 | 邱江波 | Drying and reducing integrated flash ironmaking apparatus and ironmaking method |
| CN103993115B (en) * | 2014-04-22 | 2018-02-02 | 北京闪铁科技有限公司 | Dry integrated with reduction flash ironmaking equipment and iron smelting method |
| CN104928492A (en) * | 2015-06-15 | 2015-09-23 | 中国瑞林工程技术有限公司 | Flash side-blowing smelting device and flash side-blowing smelting method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |