CN101792860B - Fabric distributing method for trolley in metal reduction reaction and metal reduction method thereof - Google Patents
Fabric distributing method for trolley in metal reduction reaction and metal reduction method thereof Download PDFInfo
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- CN101792860B CN101792860B CN 201010150947 CN201010150947A CN101792860B CN 101792860 B CN101792860 B CN 101792860B CN 201010150947 CN201010150947 CN 201010150947 CN 201010150947 A CN201010150947 A CN 201010150947A CN 101792860 B CN101792860 B CN 101792860B
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- sintered layer
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- reduction reaction
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Abstract
The invention discloses a fabric distributing method for trolley in metal reduction reaction, comprising the following steps: paving a metal-containing thermal material after reduction reaction on the surface of the trolley as a sintering layer for cycle use; and then paving a metal-containing thermal material to be reduced on the sintering layer. The fabric distributing method can prolong the service life of the trolley and speed up the reduction reaction. The invention further provides a metal reduction method.
Description
Technical field
The present invention relates to the metal extraction techniques field, particularly chassis distributing process and the metal reduction method in a kind of metal reduction reaction.
Background technology
Metal is the important materials during modernization industry is produced.The metal great majority are to extract from metal-containing minerals through certain method and apparatus.In Metal smelting method now, comparatively common is: utilize reductive agent, at a certain temperature, through the regular hour, metal-containing minerals is reduced, obtain metal.In metal reduction reaction, need to carry out reduction reaction at chassis with material to be restored is laid.In reaction process, material to be restored because be heated with the table top adhesion of chassis, therefore chassis can be damaged through behind the life-time service.For this reason, people before reduction reaction, on the chassis of being everlasting first laid one deck coal charge repave at this bed material and to put reaction mass as bed material.But this mode before each reduction reaction, is all wanted laid one deck bed material, has increased operation, and the cost increasing, and simultaneously, this kind bed material can intercept the heat transmission between chassis and the reaction mass, causes energy waste.
Summary of the invention
The object of the invention is to, the distributing process of the chassis in a kind of metal reduction reaction is provided, can prevent the table top of thermal material adhesion chassis in the reduction reaction, and can strengthen the heat-transfer effect between chassis and the material to be restored.The present invention also provides a kind of metal reduction method that adopts aforementioned distributing process.
For solving above technical problem, chassis distributing process in a kind of metal reduction reaction provided by the invention, comprise: at the table top of chassis containing metal thermal material through reduction reaction is set, as the sintered layer that recycles, laid material to be restored on sintered layer then.
Preferably, adopt the laid material of oscillating feeder.
Preferably, adopt the laid material of round roller feeding machine, or adopt the round roller feeding machine in conjunction with the laid material of reflector.
Preferably, adopt round roller feeding machine and the laid material of shuttle type distributing device.
Preferably, material to be restored is directly laid on the chassis face of chassis, through after the reduction reaction, with the containing metal thermal material that obtains as sintered layer.
Preferably, also can be with containing metal material to be restored through laid to the table top of chassis, as sintered layer again after the reduction reaction.
The present invention also provides a kind of metal reduction method, adopt above-mentioned distributing process cloth, be specially: containing metal thermal material through reduction reaction is set as the sintered layer that recycles at the table top of chassis, the material that then will comprise metal-containing minerals, reductive agent is laid on described sintered layer, chassis is delivered in the reduction furnace, be heated to predetermined reduction temperature, insulation, after the predetermined recovery time, the metal and the mine tailing that obtain are removed from sintered layer, laid material to be restored on sintered layer carries out next reduction reaction again.
Preferably, described predetermined reduction temperature is 500 ℃～1450 ℃.
Preferably, described reductive agent is selected from: one or more in coal, coke, heavy oil, refinery coke, the pitch.
Preferably, the described recovery time is 20 minutes～240 minutes.
Compared with prior art, the present invention recycles as sintered layer by the thermal material of the high degree of metalization of laid process reduction reaction on the table top of chassis, this sintered layer can separate the table top of material to be restored and chassis, prevent material to be restored in reaction because being heated and the chassis adhesion, prolonged the work-ing life of chassis; Simultaneously, because this kind sintered layer institute containing metal rate is higher, therefore, have very strong heat-transfer effect, can strengthen the heat-transfer effect between chassis and the material to be restored, accelerate reduction reaction; This sintered layer containing metal amount is higher, can be recycled, and chassis not be used in before each reduction reaction all laid bed materials, therefore saves operation, enhances productivity.
Description of drawings
Fig. 1 is the schema of the chassis distributing process in the metal reduction reaction of the present invention;
Fig. 2 is the schema of metal reduction method of the present invention.
Embodiment
Basic conception of the present invention is, will be through thermal material after the metallic reaction of reduction reaction, and laid on the chassis face, the sintered layer of material to be restored and the adhesion of chassis table top recycles when preventing from reducing.
Below in conjunction with drawings and Examples the present invention is further described.
Referring to Fig. 1, distributing process of the present invention is as follows:
Arrange on the table top of S101, chassis through the containing metal thermal material of reduction reaction as the sintered layer that recycles;
S102, on the sintered layer that recycles laid material to be restored.
Wherein, among the S101, the formation of sintered layer can directly be carried out at chassis, also can move on the table top of chassis after preparing again.Specifically referring to following examples:
Distributing process embodiment 1
1) utilizes the round roller feeding machine, be used in conjunction with shuttle type distributing device, laid one deck containing metal material to be restored on the table top of chassis;
2) reduction temperature that this heating material is extremely predetermined, insulation after the predetermined recovery time, obtains the thermal material of high metal rate, as the sintered layer that recycles;
3) utilize the round roller feeding machine, be used in conjunction with shuttle type distributing device, the material to be restored of next reduction reaction is laid to sintered layer, then begin next reduction reaction.
Distributing process embodiment 2
1) reduction temperature that heating material to be restored is extremely predetermined, insulation after the predetermined recovery time, obtains the thermal material of high metal rate, and this thermal material is laid on the table top of chassis, as the sintered layer that recycles;
2) utilize the round roller feeding machine, be used in conjunction with reflector, the material to be restored of next reduction reaction is laid to sintered layer, then begin next reduction reaction.
Referring to Fig. 2, metal reduction method of the present invention is as follows:
S201, the sintered layer that the thermal material conduct recycles after the table top of chassis arranges metallic reduction;
S202, then will comprise that the material to be restored of metal-containing minerals, reductive agent is laid on described sintered layer;
S203, chassis is delivered in the reduction furnace, be heated to predetermined reduction temperature, insulation will be through obtaining metal and mine tailing after the predetermined recovery time;
S204, the metal and the mine tailing that obtain are removed from sintered layer, deposited again the material to be restored of a reduction reaction on the sintered layer upper berth, carry out next reduction reaction.
Below take magnetite as example, metal reduction method of the present invention is described:
Metal reduction method embodiment 1
1) will comprise the mixture pelletizing moulding of magnetite and coal dust, then that pelletizing is laid on chassis, send into tunnel furnace, be heated to 1400 ℃, be incubated after 40 minutes, obtain high Fe contained thermal material, with this thermal material as the sintered layer that recycles;
2) utilize the round roller feeding machine, will comprise that the pelletizing to be restored of magnetite and coal dust is laid to sintered layer;
3) continue to be heated to 1400 ℃, be incubated after 40 minutes, obtain the reducting pellet of iron content and mine tailing;
The reducting pellet that 4) will generate is removed from sintered layer, deposits the magnetite of a reduction reaction and the pelletizing to be restored of coal dust on the sintered layer upper berth again.
Metal reduction method embodiment 2
1) will comprise the mixture pelletizing moulding of magnetite and coal dust, then pelletizing will be heated to 1300 ℃, be incubated after 40 minutes, obtain high Fe contained thermal material, this thermal material is laid on the table top of chassis, as the sintered layer that recycles;
2) utilize the round roller feeding machine, be used in conjunction with reflector, will comprise that the pelletizing to be restored of magnetite and coal dust is laid to sintered layer;
3) chassis is fed through in the tunnel furnace, is heated to 1300 ℃, be incubated after 20 minutes, obtain the reducting pellet of iron content and mine tailing;
The reducting pellet that 4) will generate is removed from sintered layer, deposits the magnetite of a reduction reaction and the pelletizing to be restored of coal dust on the sintered layer upper berth again.
Distributing process of the present invention, with thermal material after the high reduction of containing metal amount as sintered layer, can effectively prevent chassis by thermal material adhesion to be restored and breakage, simultaneously because the containing metal rate of this kind sintered layer is high, good heat conduction effect, therefore, also can strengthen the heat transmission between chassis and the material to be restored, the heat that chassis is accumulated in reduction reaction repeatedly is passed to material to be restored, accelerates the carrying out of reduction reaction, enhance productivity, reduce energy waste.
Only be preferred implementation of the present invention below, should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with the claim limited range.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. the chassis distributing process in the metal reduction reaction is characterized in that, comprising: at the table top of chassis containing metal thermal material through reduction reaction is set, and as the sintered layer that recycles, laid material to be restored on sintered layer then.
2. chassis distributing process as claimed in claim 1 is characterized in that, adopts the laid material of oscillating feeder.
3. chassis distributing process as claimed in claim 1 is characterized in that, adopts the laid material of round roller feeding machine, or adopts the round roller feeding machine in conjunction with the laid material of reflector.
4. chassis distributing process as claimed in claim 1 is characterized in that, adopts round roller feeding machine and the laid material of shuttle type distributing device.
5. chassis distributing process as claimed in claim 1 is characterized in that, material to be restored is directly laid on the chassis face of chassis, through after the reduction reaction, with the containing metal thermal material that obtains as sintered layer.
6. chassis distributing process as claimed in claim 1 is characterized in that, with laid to the table top of chassis, as sintered layer again after the containing metal material process reduction reaction to be restored.
7. metal reduction method, it is characterized in that, containing metal thermal material through reduction reaction is set as the sintered layer that recycles at the table top of chassis, will comprises that then the material of metal-containing minerals, reductive agent is laid on described sintered layer, chassis is delivered in the reduction furnace, be heated to predetermined reduction temperature, insulation after the predetermined recovery time, is removed the metal and the mine tailing that obtain from sintered layer, laid material to be restored on sintered layer carries out next reduction reaction again.
8. metal reduction method as claimed in claim 7 is characterized in that, described predetermined reduction temperature is 500 ℃～1450 ℃.
9. metal reduction method as claimed in claim 7 is characterized in that, described reductive agent is selected from: one or more in coal, coke, heavy oil, refinery coke, the pitch.
10. metal reduction method as claimed in claim 7 is characterized in that, the described recovery time is 20 minutes～240 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010150947 CN101792860B (en) | 2010-04-13 | 2010-04-13 | Fabric distributing method for trolley in metal reduction reaction and metal reduction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010150947 CN101792860B (en) | 2010-04-13 | 2010-04-13 | Fabric distributing method for trolley in metal reduction reaction and metal reduction method thereof |
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| CN101792860A CN101792860A (en) | 2010-08-04 |
| CN101792860B true CN101792860B (en) | 2013-03-06 |
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| CN 201010150947 Expired - Fee Related CN101792860B (en) | 2010-04-13 | 2010-04-13 | Fabric distributing method for trolley in metal reduction reaction and metal reduction method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107058667A (en) * | 2016-12-06 | 2017-08-18 | 江苏省冶金设计院有限公司 | Prepare the method and system of metallized pellet |
| CN106755697A (en) * | 2016-12-06 | 2017-05-31 | 江苏省冶金设计院有限公司 | Prepare the method and system of metallized pellet |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147557A (en) * | 1995-10-06 | 1997-04-16 | 敖喜春 | Primer paving technology |
| CN1429920A (en) * | 2001-12-31 | 2003-07-16 | 新疆钢铁研究所 | Application of limonite as base material in pelletizing agglomerate production method |
| CN101148686A (en) * | 2007-11-08 | 2008-03-26 | 唐山奥特斯窑炉有限公司 | Technique for directly reducing iron by using tunnel vehicle bottom type fast reducing furnace |
| CN101205565A (en) * | 2006-12-22 | 2008-06-25 | 庆安铁源粉末冶金有限公司 | Method for producing direct reduction iron by hybrid process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4120230B2 (en) * | 2002-02-18 | 2008-07-16 | Ｊｆｅスチール株式会社 | Operation method of mobile hearth furnace |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147557A (en) * | 1995-10-06 | 1997-04-16 | 敖喜春 | Primer paving technology |
| CN1429920A (en) * | 2001-12-31 | 2003-07-16 | 新疆钢铁研究所 | Application of limonite as base material in pelletizing agglomerate production method |
| CN101205565A (en) * | 2006-12-22 | 2008-06-25 | 庆安铁源粉末冶金有限公司 | Method for producing direct reduction iron by hybrid process |
| CN101148686A (en) * | 2007-11-08 | 2008-03-26 | 唐山奥特斯窑炉有限公司 | Technique for directly reducing iron by using tunnel vehicle bottom type fast reducing furnace |
Non-Patent Citations (2)
| Title |
|---|
| Herbert G.Papacek.控制铺底料 改善球团矿质量.《烧结球团》.1994,(第5期),第31页第2栏倒数第2段-第32页第2栏第1段. * |
| JP特开2003-239008A 2003.08.27 |
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Owner name: QIANQIU ENERGY (SHANGHAI) CO., LTD. Free format text: FORMER OWNER: LI BAIRONG Effective date: 20131010 |
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Effective date of registration: 20131010 Address after: 201306 No. 340 A0201 neighborhood, Lingang hi tech industrialization base, Shanghai, Pudong New Area Patentee after: Future energy (Shanghai) Limited Address before: Guangyuan East Road Guangzhou Guangdong province 510000 City Sceneway Metro 1 Street 7 block 701 Patentee before: Li Bairong |
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