CN108016854A - Reduced iron and carbon residue mixed material carrying method - Google Patents
Reduced iron and carbon residue mixed material carrying method Download PDFInfo
- Publication number
- CN108016854A CN108016854A CN201711248744.5A CN201711248744A CN108016854A CN 108016854 A CN108016854 A CN 108016854A CN 201711248744 A CN201711248744 A CN 201711248744A CN 108016854 A CN108016854 A CN 108016854A
- Authority
- CN
- China
- Prior art keywords
- trough
- reduced iron
- carbon residue
- mixed material
- temperature
- Prior art date
- 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.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 239000000463 material Substances 0.000 title claims abstract description 51
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000011261 inert gas Substances 0.000 claims abstract description 15
- 238000012216 screening Methods 0.000 claims abstract description 14
- 230000010355 oscillation Effects 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 239000003245 coal Substances 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims abstract description 4
- 239000000428 dust Substances 0.000 claims description 13
- 238000004880 explosion Methods 0.000 claims description 9
- 238000006722 reduction reaction Methods 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Chemical group 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005007 materials handling Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/52—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices
- B65G47/72—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices transferring materials in bulk from one conveyor to several conveyors, or vice versa
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of reduced iron and carbon residue mixed material carrying method, reduced iron and carbon residue mixed material that coal base upright furnace Direct Reducing Iron Process produces are discharged into the trough of inertial oscillation conveyer；Trough is enclosed construction, is internally provided with sieve plate；When trough vibrates, large-sized reduced iron is stayed in the trough of upper strata, and the carbon residue of small particle is fallen into lower floor's trough, and self-corresponding discharge port discharge respectively；Under accident condition, the temperature of mixed material in trough is monitored in real time by infrared temperature detection device, when temperature is higher than upper critical temperature, is controlled from control system and inert gas is passed through into trough to mixed material cooling and protective effect.The present invention can realize the screening of 2 kinds of materials in mixed material course of conveying, while be also equipped with protection or refrigerating function, and course of conveying good dustproof effect, and security performance is high；Be conducive to shorten process route, improve production efficiency.
Description
Technical field
The present invention relates to materials-handling technology field, more particularly to a kind of reduced iron and carbon residue mixed material carrying method.
Background technology
In coal base upright furnace Direct Reducing Iron Process, after furnace reduction is reacted, the mixture of upright furnace furnace bottom discharge
After expecting that (reduced iron and carbon residue) is cooled in membranous wall formula cooler, the conveying equipment of lower section is then discharged into by discharge device
In.Product -- reduced iron in order to obtain, further must just be separated reduced iron in mixed material with carbon residue.Mixed material
Middle reduced iron and carbon residue physical property difference are very big：Reduced iron overwhelming majority particle diameter is larger (being more than 8mm), and heap density is 1.7t/
m3, and carbon residue overwhelming majority particle diameter is smaller (being less than 1mm), heap density is 0.515t/m3.Common process is to pass through mixed material
Conveying equipment is sent to screening station, and screening separation is carried out using screening plant.
In the conveying of mixed material and screening process, due to equipment is poorly sealed close and mixed material in carbon residue have
The characteristics such as particle diameter is small, moisture is low, cause have a large amount of dust to produce and escape, and pollute surrounding environment.The presence of a large amount of dust also pole
Easily lead to the environmental risks such as dust explosion.
Further, since membranous wall formula Cooler Fault or under other accident state, the mixed material of upright furnace discharge still has
There is higher temperature, at this temperature, easily with the moisture in air, oxygen oxidation reaction occurs for reduced iron, discharges a large amount of
Heat, add the environmental risks such as fire, the explosion of reduced iron processing section.
When conveying said mixture material using conventional inertial oscillation conveyer, it has individual layer trough, due to individual layer
The physical property difference of mixed material (reduced iron and carbon residue) is very big in trough, and the pace there are two kinds of materials is inconsistent,
It is also easy to produce the problems such as interfering with each other.
The content of the invention
The present invention provides a kind of reduced iron and carbon residue mixed material carrying method, 2 kinds can be realized in course of conveying
The screening of material, while protection or refrigerating function are also equipped with, and course of conveying good dustproof effect, security performance are high；Be conducive to contract
Short processes route, improves production efficiency.
In order to achieve the above object, the present invention is realized using following technical scheme：
Reduced iron and carbon residue mixed material carrying method, the whole closing of course of conveying leak without dust, and can be as needed
Being passed through inert gas prevents dust explosion；Realize that reduced iron is separated with the screening of carbon residue at the same time；Specifically comprise the following steps：
1) during coal base upright furnace direct reduced iron, after the completion of furnace reduction reaction, reduced iron and carbon residue mixed material
It is discharged into from the expanded section of upright furnace furnace bottom discharge gate in the trough of inertial oscillation conveyer；
2) trough of inertial oscillation conveyer is enclosed construction, and trough is integrally divided into equipped with sieve plate in trough and is gone up,
Lower 2 layers；When trough vibrates, large-sized reduced iron is stayed in the trough of upper strata and moved ahead along material conveying direction to discharge end；It is small
The carbon residue of particle diameter falls into lower floor's trough and moves ahead along material conveying direction to discharge end after screening；
3) in the discharge end of trough, upper strata trough is equipped with reduced iron discharge port, and the expanded section of the reduced iron on sieve is discharged into down
On the reduction iron transfer belt feeder of side；Lower floor's trough is equipped with carbon residue discharge port, and the expanded section of the carbon residue under sieving is discharged into the residual of lower section
On charcoal transhipment belt feeder；
4) under accident condition, the reduced iron and carbon residue mixed material temperature of upright furnace discharge are excessive；Pass through infrared temperature at this time
Degree detection device monitors the temperature of mixed material in trough in real time, when temperature is higher than upper critical temperature, is controlled by control system
Inert gas is passed through into trough, cooling and protective effect are risen to mixed material, prevent dust explosion phenomenon；When in trough
When at a temperature of mixed material dropping to below lower critical temperature, stop being passed through inert gas into trough from control system control.
Compared with prior art, the beneficial effects of the invention are as follows：
1) solve with conventional inertial oscillation conveyer conveying physical property difference very big reduced iron and carbon residue mixture
During material, because two kinds of material paces are inconsistent, cause to interfere with each other, the problem of transfer efficiency is low；
2) while mixed material is conveyed, also achieve reduced iron and separated with the screening of carbon residue, by former technological process
Screening station cancel, save floor space and engineering cost；
3) have the advantages that totally-enclosed conveying, lock wind effect are good, avoid mixed material a large amount of dust in course of conveying
Overflow and dissipate, pollute the phenomenon of surrounding environment；
4) when running in the state of accident, the mixed material in trough not only completely cuts off all the time in inert atmosphere in
Reduced iron and moisture in air, oxygen, prevent its from oxidation reaction occurs, and inert gas directly contacts with reduced iron, and also
The heat of reduced iron can be taken away, reduces the temperature of reduced iron, so as to avoid course of conveying and sequential reduction iron processing section
The environmental risks such as fire, explosion.
Embodiment
Reduced iron and carbon residue mixed material carrying method of the present invention, the whole closing of course of conveying leak without dust, and
Inert gas can be passed through as needed prevents dust explosion；Realize that reduced iron is separated with the screening of carbon residue at the same time；Specifically include as
Lower step：
1) during coal base upright furnace direct reduced iron, after the completion of furnace reduction reaction, reduced iron and carbon residue mixed material
It is discharged into from the expanded section of upright furnace furnace bottom discharge gate in the trough of inertial oscillation conveyer；
2) trough of inertial oscillation conveyer is enclosed construction, and trough is integrally divided into equipped with sieve plate in trough and is gone up,
Lower 2 layers；When trough vibrates, large-sized reduced iron is stayed in the trough of upper strata and moved ahead along material conveying direction to discharge end；It is small
The carbon residue of particle diameter falls into lower floor's trough and moves ahead along material conveying direction to discharge end after screening；
3) in the discharge end of trough, upper strata trough is equipped with reduced iron discharge port, and the expanded section of the reduced iron on sieve is discharged into down
On the reduction iron transfer belt feeder of side；Lower floor's trough is equipped with carbon residue discharge port, and the expanded section of the carbon residue under sieving is discharged into the residual of lower section
On charcoal transhipment belt feeder；
4) under accident condition, the reduced iron and carbon residue mixed material temperature of upright furnace discharge are excessive；Pass through infrared temperature at this time
Degree detection device monitors the temperature of mixed material in trough in real time, when temperature is higher than upper critical temperature, is controlled by control system
Inert gas is passed through into trough, cooling and protective effect are risen to mixed material, prevent dust explosion phenomenon；When in trough
When at a temperature of mixed material dropping to below lower critical temperature, stop being passed through inert gas into trough from control system control.
In the present invention, trough top sets cover closure, real by expansion joint between material receiving port and upright furnace furnace bottom discharge gate
Now it is flexible coupling, 2 discharge gates are flexible coupling with transporting the feed inlet of belt feeder also by expansion joint, it is achieved that totally-enclosed conveying
Process.
Inert gas intake and infrared temperature detection device are arranged at trough material receiving port one end, draw close to inert gas
Solenoid valve is set on the inert gas conveyance conduit of entrance, solenoid valve is realized with infrared temperature detection device by control system to be joined
It is dynamic.Inert gas first choice nitrogen.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (1)
1. reduced iron and carbon residue mixed material carrying method, it is characterised in that the whole closing of course of conveying leaks without dust, and can
Being passed through inert gas prevents dust explosion as needed；Realize that reduced iron is separated with the screening of carbon residue at the same time；Specifically include as follows
Step：
1) during coal base upright furnace direct reduced iron, after the completion of furnace reduction reaction, reduced iron and carbon residue mixed material are from straight
The vertical expanded section of stove furnace bottom discharge gate is discharged into the trough of inertial oscillation conveyer；
2) trough of inertial oscillation conveyer is enclosed construction, and trough is integrally divided into upper and lower 2 equipped with sieve plate in trough
Layer；When trough vibrates, large-sized reduced iron is stayed in the trough of upper strata and moved ahead along material conveying direction to discharge end；Small particle
Carbon residue fall into lower floor's trough and move ahead along material conveying direction to discharge end after screening；
3) in the discharge end of trough, upper strata trough is equipped with reduced iron discharge port, and the expanded section of the reduced iron on sieve is discharged into lower section
Reduce on iron transfer belt feeder；Lower floor's trough is equipped with carbon residue discharge port, and the carbon residue that the expanded section of the carbon residue under sieving is discharged into lower section turns
Transport on belt feeder；
4) under accident condition, the reduced iron and carbon residue mixed material temperature of upright furnace discharge are excessive；Examined at this time by infrared temperature
The temperature that device monitors mixed material in trough in real time is surveyed, when temperature is higher than upper critical temperature, is controlled from control system to machine
Inert gas is passed through in groove, cooling and protective effect are risen to mixed material, prevent dust explosion phenomenon；When being mixed in trough
When at a temperature of material dropping to below lower critical temperature, stop being passed through inert gas into trough from control system control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711248744.5A CN108016854A (en) | 2017-12-01 | 2017-12-01 | Reduced iron and carbon residue mixed material carrying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711248744.5A CN108016854A (en) | 2017-12-01 | 2017-12-01 | Reduced iron and carbon residue mixed material carrying method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108016854A true CN108016854A (en) | 2018-05-11 |
Family
ID=62077941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711248744.5A Pending CN108016854A (en) | 2017-12-01 | 2017-12-01 | Reduced iron and carbon residue mixed material carrying method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108016854A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB884059A (en) * | 1957-09-06 | 1961-12-06 | West Midlands Gas Board | Discharging coke from retorts in coal-carbonising plant |
| EP0262353A1 (en) * | 1986-08-21 | 1988-04-06 | HYLSA, S.A. de C.V. | Method for producing hot sponge iron |
| CN1080961A (en) * | 1992-12-23 | 1994-01-19 | 东北工学院 | The method and apparatus of reducing spongy iron in coal-base shaft furnace |
| JPH08291289A (en) * | 1995-04-21 | 1996-11-05 | Chubu Kounetsu Kogyo Kk | Apparatus for continuously producing charcoal |
| CN202460968U (en) * | 2011-12-12 | 2012-10-03 | 中建材（合肥）粉体科技装备有限公司 | Vibration slide sieve |
| CN202729228U (en) * | 2012-07-13 | 2013-02-13 | 山东祺龙电子有限公司 | Vibratory feeder |
| CN103658014A (en) * | 2013-12-09 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Sealed multiple-sieve-net vibration sieve |
| CN104357655A (en) * | 2014-10-25 | 2015-02-18 | 河南太行全利重工股份有限公司 | Continuous ore reduction and hot-charging steelmaking device |
| CN106521074A (en) * | 2017-01-13 | 2017-03-22 | 刘冬冬 | Equipment and process using methanol splitting decomposition to produce direct reduced iron |
| CN106916599A (en) * | 2017-02-08 | 2017-07-04 | 中冶南方工程技术有限公司 | A kind of iron coke process units and method |
| CN107058666A (en) * | 2017-06-30 | 2017-08-18 | 江苏省冶金设计院有限公司 | A kind of cooling gas system for shaft furnace cooling section |
| CN107377361A (en) * | 2017-08-04 | 2017-11-24 | 安徽亿恒智选光电有限公司 | One kind sorting reciprocating sieve |
-
2017
- 2017-12-01 CN CN201711248744.5A patent/CN108016854A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB884059A (en) * | 1957-09-06 | 1961-12-06 | West Midlands Gas Board | Discharging coke from retorts in coal-carbonising plant |
| EP0262353A1 (en) * | 1986-08-21 | 1988-04-06 | HYLSA, S.A. de C.V. | Method for producing hot sponge iron |
| CN1080961A (en) * | 1992-12-23 | 1994-01-19 | 东北工学院 | The method and apparatus of reducing spongy iron in coal-base shaft furnace |
| JPH08291289A (en) * | 1995-04-21 | 1996-11-05 | Chubu Kounetsu Kogyo Kk | Apparatus for continuously producing charcoal |
| CN202460968U (en) * | 2011-12-12 | 2012-10-03 | 中建材（合肥）粉体科技装备有限公司 | Vibration slide sieve |
| CN202729228U (en) * | 2012-07-13 | 2013-02-13 | 山东祺龙电子有限公司 | Vibratory feeder |
| CN103658014A (en) * | 2013-12-09 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Sealed multiple-sieve-net vibration sieve |
| CN104357655A (en) * | 2014-10-25 | 2015-02-18 | 河南太行全利重工股份有限公司 | Continuous ore reduction and hot-charging steelmaking device |
| CN106521074A (en) * | 2017-01-13 | 2017-03-22 | 刘冬冬 | Equipment and process using methanol splitting decomposition to produce direct reduced iron |
| CN106916599A (en) * | 2017-02-08 | 2017-07-04 | 中冶南方工程技术有限公司 | A kind of iron coke process units and method |
| CN107058666A (en) * | 2017-06-30 | 2017-08-18 | 江苏省冶金设计院有限公司 | A kind of cooling gas system for shaft furnace cooling section |
| CN107377361A (en) * | 2017-08-04 | 2017-11-24 | 安徽亿恒智选光电有限公司 | One kind sorting reciprocating sieve |
Non-Patent Citations (1)
| Title |
|---|
| D.R.伍德利等著: "《物料搬运》", 北京：机械工业出版社, pages: 248 - 250 * |
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