CN100421806C - Rollscale impurity-removing system and process - Google Patents
Rollscale impurity-removing system and process Download PDFInfo
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- CN100421806C CN100421806C CNB200410015611XA CN200410015611A CN100421806C CN 100421806 C CN100421806 C CN 100421806C CN B200410015611X A CNB200410015611X A CN B200410015611XA CN 200410015611 A CN200410015611 A CN 200410015611A CN 100421806 C CN100421806 C CN 100421806C
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- impurity
- elevator
- feed bin
- high temperature
- iron
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Abstract
The present invention relates to a rolling steel iron scale impurity removing equipment with high temperature resistance and a technology thereof. The equipment is composed of a grizzly screen, a drying kiln, an iron removing device, a magnetic roller with high temperature resistance, etc. By the multiple stages of impurity removing technologies of the sorting of the grizzly screen, the high temperature drying of the drying kiln and the magnetic separation of the magnetic roller with high temperature resistance for the second time, most harmful impurities in the iron scale raw materials are effectively removed, and the quality of the iron scale raw materials is increased, so that guarantee is provided for the production of high quality iron oxide powder.
Description
Technical field:
The technology of the present invention relates to a kind of iron scale impurity removed system and technology, particularly a kind of under hot conditions steel scale of steel rolling impurity removed system and technology.
Background technology:
When being raw material production brown iron oxide with steel scale of steel rolling, because factors such as the variation of steel rolling steel grade, steel rolling equipment maintenance, operation, collection, stacking, transportation, contain more impurity in the steel scale of steel rolling, mainly contain the iron scale that exists with the metallic iron form, be silicate material and the oily substance and the moisture of main component with silica.These impurity are very big to the performance hazards of product, influence the class of product and stablizing of quality; Therefore produce brown iron oxide with steel scale of steel rolling and must effectively remove impurity, just can obtain high-grade brown iron oxide product, impurity removing technology has become steel scale of steel rolling and has produced one of key technology of high-grade permanent-magnet ferrite.But do not remove impurity in the steel scale of steel rolling at present there being means preferably.
Summary of the invention:
The technical issues that need to address of the present invention are: effectively remove objectionable impurities before steel scale of steel rolling enters the ball mill grinding.Thinking of the present invention is: according to the different qualities of impurity, adopt different impurity removal process equipment substep removal of impurities, proposed a kind of resistant to elevated temperatures steel scale of steel rolling impurity removed system and technology.Technical scheme of the present invention is: a kind of iron scale impurity removed system, it is characterized in that forming by diagrid, elevator, feed bin, drying kiln, tramp iron separator, belt conveyor and high temperature resistant magnetic roller, and elevator and feed bin all have two, and 1
#Elevator is arranged on a side of diagrid, and elevator top side below is provided with 1
#Feed bin, 1
#The feed bin side-lower is provided with drying kiln, and a side of drying kiln is provided with 2
#Elevator, 2
#Elevator top side below is provided with 2
#Feed bin, 2
#The feed bin below is provided with belt conveyor, and the top of belt conveyor is provided with magnet, and the terminal of belt conveyor is provided with high temperature resistant magnetic roller.
Iron scale impurity removal process step is as follows:
1, the steel scale of steel rolling raw material enters diagrid and screens, and screens out oarse-grained impurity;
2, remove the iron scale raw material of oarse-grained impurity through 1
#Elevator is transported to 1
#Feed bin enters drying kiln then and carries out hyperthermia drying, removes oily substance and moisture, bake out temperature: 110 ℃～270 ℃, and the time: 25～45 minutes;
3, the high temperature iron scale after the oven dry is by 2
#Elevator sends into 2
#Feed bin evenly is fed to belt conveyor again;
4, the iron scale raw material is along with metallic iron impurity is removed by tramp iron separator by the mobile elder generation of belt conveyor, during again by high temperature resistant magnetic roller, remove granule, microparticle impurity, magnetic field intensity 2300～2800 Gausses, operating temperature were less than 270 ℃ when high temperature resistant magnetic roller was worked.
Beneficial effect of the present invention: after this impurity removal process uses, fall silicon, impurity-eliminating effect is fine.Be mainly reflected in: (1) dioxide-containing silica drops to below 0.3%; (2) the brown iron oxide product quality improves, Fe
2O
3The mean value of percentage composition bring up to 99% above level by original 98%; (3) owing to effective impurity of removing, the uniform particles raising, the grinding process condition is improved, and has improved product yield, has prolonged equipment life.
Description of drawings:
Accompanying drawing is a structural representation of the present invention:
Among the figure: 1-diagrid, 2-1
#Elevator, 3-1
#Feed bin, 4-drying kiln, 5-2
#Elevator, 6-2
#Feed bin, 7-belt conveyor, 8-tramp iron separator, 9-is high temperature resistant magnetic roller.
The specific embodiment:
Embodiment 1: referring to accompanying drawing, and the iron scale raw material diagrid 1 of packing into during production, the iron scale raw material is entered separately hopper by hank oversize and minus mesh of branch, and oversize is an impurity, and minus mesh is by 1
#Elevator 2 sends into 1
#Feed bin 3,1
#The iron scale raw material that feed bin is 3 li is sent into drying kiln 4 oven dry, 200 ℃ of bake out temperatures, and the time is 30 minutes, and temperature control is as the criterion with effective removal oil, water impurity, and the high temperature iron scale after the oven dry is by 2
# Elevator 5 sends into 2
# Feed bin 6, evenly be fed to belt conveyor 7 again, the iron scale raw material is on belt conveyor 7, remove metallic iron impurity during by tramp iron separator 8, during by high temperature resistant magnetic roller 9, remove granule, microparticle impurity, magnetic field intensity 2500 Gausses, operating temperature were 250 ℃ when high temperature resistant magnetic roller 9 was worked, and so far the resistant to elevated temperatures steel scale of steel rolling impurity removal process of this kind finishes.After the iron scale raw material was handled through this impurity removal process, the quality of iron scale is significantly improved: (1) dioxide-containing silica dropped to 0.28%; (2) the brown iron oxide product quality improves, Fe
2O
3The mean value of percentage composition bring up to 99.3% by original 98%.
Embodiment 2: bake out temperature is 160 ℃, and the time is 40 minutes; Magnetic field intensity 2400 Gausses, operating temperature were 240 ℃ when high temperature resistant magnetic roller was worked.All the other are identical with embodiment 1.After this impurity removal process used, (1) dioxide-containing silica dropped to 0.29%; (2) the brown iron oxide product quality improves, Fe
2O
3The mean value of percentage composition bring up to 99.2% by original 98%.
Claims (4)
1. an iron scale impurity removed system is characterized in that being made up of diagrid, elevator, feed bin, drying kiln, tramp iron separator, belt conveyor and high temperature resistant magnetic roller, and elevator and feed bin all have two, and 1
#Elevator is arranged on a side of diagrid, and elevator top side below is provided with 1
#Feed bin, 1
#The feed bin side-lower is provided with drying kiln, and a side of drying kiln is provided with 2
#Elevator, 2
#Elevator top side below is provided with 2
#Feed bin, 2
#The feed bin below is provided with belt conveyor, and the top of belt conveyor is provided with magnet, and the terminal of belt conveyor is provided with high temperature resistant magnetic roller.
2. iron scale impurity removal process is characterized in that the impurity removal process step is as follows:
A, steel scale of steel rolling raw material enter diagrid and screen, and screen out oarse-grained impurity;
The iron scale raw material of b, the oarse-grained impurity of removal is through 1
#Elevator is transported to 1
#Feed bin enters drying kiln then and carries out hyperthermia drying, removes oily substance and moisture;
High temperature iron scale after c, the oven dry is by 2
#Elevator sends into 2
#Feed bin evenly is fed to belt conveyor again;
D, iron scale raw material be along with metallic iron impurity is removed by tramp iron separator by the mobile elder generation of belt conveyor, during again by high temperature resistant magnetic roller, removes granule, microparticle impurity.
3. iron scale impurity removal process according to claim 2 is characterized in that bake out temperature: 110 ℃～270 ℃, and the time: 25～45 minutes.
4. iron scale impurity removal process according to claim 2, magnetic field intensity 2300～2800 Gausses, operating temperature are less than 270 ℃ when it is characterized in that the work of high temperature resistant magnetic roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410015611XA CN100421806C (en) | 2004-01-02 | 2004-01-02 | Rollscale impurity-removing system and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410015611XA CN100421806C (en) | 2004-01-02 | 2004-01-02 | Rollscale impurity-removing system and process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1640560A CN1640560A (en) | 2005-07-20 |
| CN100421806C true CN100421806C (en) | 2008-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410015611XA Expired - Fee Related CN100421806C (en) | 2004-01-02 | 2004-01-02 | Rollscale impurity-removing system and process |
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| CN (1) | CN100421806C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618686A (en) * | 2012-03-18 | 2012-08-01 | 莱芜市泰东粉末科技有限公司 | Technology for producing sponge iron by taking carbon-Lan as reducing agent |
| CN106070594A (en) * | 2016-07-25 | 2016-11-09 | 柳州名品科技有限公司 | The using method of fructus zizaniae caduciflorae dehydrator |
| CN106225425A (en) * | 2016-07-25 | 2016-12-14 | 柳州名品科技有限公司 | The using method of corn cob dehydrator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3816493A1 (en) * | 1988-05-09 | 1989-11-16 | Hartmann Helmut | Process for separating a starting product, preferably mill scale, into its constituents |
| DE4104072A1 (en) * | 1991-02-11 | 1992-08-13 | Fechner Bruno Gmbh & Co Kg | Recycling roll scale - grinds collected scale to be used with coal as fuel dust blown into blast furnace |
| CN1089191A (en) * | 1993-04-12 | 1994-07-13 | 鞍山钢铁公司 | Magnetic separating, processing and recovery system for steel slag |
| JPH0777390A (en) * | 1990-03-10 | 1995-03-20 | Stahlwerke Peine Salzgitter Ag | Method and equipment for processing substance such as rolling scale that contains oil |
| CN1166456C (en) * | 2002-05-13 | 2004-09-15 | 丁世普 | Process for extracting steel particles or sand from iron mud generated in smelting steel |
-
2004
- 2004-01-02 CN CNB200410015611XA patent/CN100421806C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3816493A1 (en) * | 1988-05-09 | 1989-11-16 | Hartmann Helmut | Process for separating a starting product, preferably mill scale, into its constituents |
| JPH0777390A (en) * | 1990-03-10 | 1995-03-20 | Stahlwerke Peine Salzgitter Ag | Method and equipment for processing substance such as rolling scale that contains oil |
| DE4104072A1 (en) * | 1991-02-11 | 1992-08-13 | Fechner Bruno Gmbh & Co Kg | Recycling roll scale - grinds collected scale to be used with coal as fuel dust blown into blast furnace |
| CN1089191A (en) * | 1993-04-12 | 1994-07-13 | 鞍山钢铁公司 | Magnetic separating, processing and recovery system for steel slag |
| CN1166456C (en) * | 2002-05-13 | 2004-09-15 | 丁世普 | Process for extracting steel particles or sand from iron mud generated in smelting steel |
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| Publication number | Publication date |
|---|---|
| CN1640560A (en) | 2005-07-20 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Nanjing Meishan Metallurgy Development Co., Ltd. Assignor: Shanghai Meishan Co., Ltd., Baogang Group Contract record no.: 2011320000270 Denomination of invention: Rollscale impurity-removing system and process Granted publication date: 20081001 License type: Exclusive License Open date: 20050720 Record date: 20110315 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081001 Termination date: 20190102 |