CN105381880A - Iron removing device of steel slag vertical mill and iron removing method of steel slag vertical mill - Google Patents

Iron removing device of steel slag vertical mill and iron removing method of steel slag vertical mill Download PDF

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Publication number
CN105381880A
CN105381880A CN201510840275.0A CN201510840275A CN105381880A CN 105381880 A CN105381880 A CN 105381880A CN 201510840275 A CN201510840275 A CN 201510840275A CN 105381880 A CN105381880 A CN 105381880A
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CN
China
Prior art keywords
mill
iron
vertical mill
magnet
cylindrical shell
Prior art date
Application number
CN201510840275.0A
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Chinese (zh)
Inventor
陈鹏
Original Assignee
中冶南方工程技术有限公司
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Application filed by 中冶南方工程技术有限公司 filed Critical 中冶南方工程技术有限公司
Priority to CN201510840275.0A priority Critical patent/CN105381880A/en
Publication of CN105381880A publication Critical patent/CN105381880A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00Magnetic separation
    • B03C1/02Magnetic separation acting directly on the substance being separated
    • B03C1/30Combinations with other devices, not otherwise provided for

Abstract

The invention provides an iron removing device of a steel slag vertical mill. The iron removing device comprises a vertical mill shell, a mill disc and a plurality of mill rolls distributed on the mill disc at intervals. A rotating iron removing device is arranged between the two mill rolls on the mill disc and comprises a shaft, a magnet, a cylinder and a driving mechanism. The shaft is fixedly arranged on the upper edge of the mill disc, and an interval exists between the lower end of the shaft and the mill disc. One end of the magnet is fixed to the shaft, and the other end of the magnet faces the central axis of the mill disc. The cylinder is connected to the outer side of the shaft and the outer side of the magnet in a sleeving manner and is connected with a drive motor reducer through a transmission mechanism. The cylinder is driven by the drive motor reducer and the transmission mechanism to rotate around the axis of the cylinder. The iron removing device of the steel slag vertical mill is simple in structure and convenient to install, powder milling and iron removing can be conducted at the same time, magnetic metal generated during powder milling of the vertical mill can be effectively removed, corrosion of the mill disc and the mill rolls due to enrichment of the magnetic metal on the mill disc is avoided, the service life of the vertical mill is prolonged, and the vertical mill can serve as a steel slag powder milling device for use.

Description

A kind of slag Vertical Mill deironing apparatus and method for removing iron thereof
Technical field
The invention belongs to mechanical equipment technical field, be specifically related to a kind of slag Vertical Mill deironing apparatus and method for removing iron thereof, be applicable to slag micro powder grinding deironing.
Background technology
Vertical Mill is as milling equipment, and it integrates fragmentation, grinding, dries, selects powder, have that power consumption is low, good seal performance, the low 30 ~ 50db of noise ratio ball mill, can outdoorly arrange, the feature such as floor space is little, flow process is simple.By regulating powder concentrator rotating speed, grinding machine throughput and pressure of milling, and combining with suitable collet height, fineness and the domain size distribution of requirement can be obtained.
Vertical Mill is widely used at the production field of slag micropowder.Its output is high, power consumption is low, and permission water into the mill can up to 20%, and the specific area of finished product can reach 400 ~ 500m 2/ more than kg, is conducive to the large-scale production of slag powders.At present, the each large cement in the world is equipped the design of the continuous development of new high-abrasive material of company, improvement roller and mill and is suitably reduced speed of grinding plate, measure such as optimization hydraulic system, lubricating system etc., effectively extend the service life of wearing piece, reduce vibration, improve operation rate.Vertical Mill has become the main equipment of preferred slag micropowder processing both at home and abroad.
But Vertical Mill is limited in slag micro powder field of milling.The waste residue of discharging when slag is steel plant's steel-making, in the tapping process of steel plant, inherently discharge some metallic irons, although this part iron in the single treatment, after-treatment of slag through cracking and sorting repeatedly, recovery, but can not separate completely, according to detection, still reach 3%, higher than metal Ferrum content in slag as the content of metallic iron in the slag of cement material.The grinding machine being always in closed high temperature due to Vertical Mill slag in process of lapping is inner, cannot carry out deironing, mill easily occurs metal enrichment, and cause mill and grinding roller abrasion greatly, the life-span reduces greatly.Therefore, metal Ferrum content is high, the difficult abrasion causing slag of deironing is large, and grindability is poor, the defect that the Vertical Mill life-span is low.
Summary of the invention
Easily there is metal enrichment in the mill that the object of the invention is to overcome existing Vertical Mill, cause mill and grinding roller abrasion large, the problem that the life-span reduces greatly.
For this reason, the invention provides a kind of slag Vertical Mill deironing apparatus, comprise vertical mill casing, and be arranged on the mill of vertical mill casing inside and be arranged on multiple grinding rollers spaced apart above mill, between two grinding rollers above described mill, be provided with rotation tramp iron separator; Described rotation tramp iron separator comprises axle, magnet, cylindrical shell and driving mechanism, described axle is fixedly installed on the vertical mill casing of mill top edges, and be provided with spacing between axle lower end and mill, magnet one end is fixed on axle, the other end is towards mill axis, described barrel jacket is connected on outside axle and magnet, and driving mechanism drives cylindrical shell to pivot.
Further, above-mentioned mill arranged outside has collecting bin.
Further, above-mentioned collecting bin bottom is provided with gate.
Further, above-mentioned magnet is fan-shaped permanent magnet or fan-shaped electromagnet.
Further, above-mentioned cylindrical shell is full-closed structure, and magnet is wrapped in cylindrical shell.
Further, above-mentioned driving mechanism comprises drive motors decelerator and sprocket wheel chain driver group, and drive motors decelerator is arranged on outside vertical mill casing, and sprocket wheel chain driver group is outside equipped with protective cover.
Further, between every two grinding rollers in above-mentioned multiple grinding roller, rotation tramp iron separator is all installed.
In addition, present invention also offers the method for removing iron of this slag Vertical Mill deironing apparatus, detailed process is as follows: first, and the slag iron on mill rolls and is separated into solid impurity particle and iron particle by grinding roller; Then, drive motors decelerator and transmission mechanism drive cylindrical shell to pivot, and the cylindrical shell side of parcel magnet is subject to the magnetization of inner magnet, and pivoted on cylindrical shell by iron granular absorption, magnet is static; Finally, iron particle rotates to outside mill with cylindrical shell, and cylindrical shell loses magnetism, and iron particle departs from cylindrical shell and collects.
Compared with prior art, beneficial effect of the present invention:
(1) this slag Vertical Mill deironing apparatus provided by the invention effectively can remove the magnetic metal in vertical mill grinding, avoid magnetic metal enrichment on mill and cause the problem of the abrasion of mill and grinding roller, improve the service life of Vertical Mill, make Vertical Mill can as steel slag grinding equipment use.
(2) this slag Vertical Mill deironing apparatus structure provided by the invention is simple, easy for installation; Meanwhile, this slag Vertical Mill deironing apparatus is utilized to remove the technical process of metal on mill simply, easy to operate.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is the planar structure schematic diagram of slag Vertical Mill deironing apparatus of the present invention.
Fig. 2 is the section structure schematic diagram of slag Vertical Mill deironing apparatus of the present invention.
Description of reference numerals: 1, mill; 2, grinding roller; 3, axle; 4, magnet; 5, cylindrical shell; 6, drive motors decelerator; 7, transmission mechanism; 8, blanking tube; 9, gate; 10, collecting bin.
Detailed description of the invention
Embodiment 1:
In order to overcome existing Vertical Mill mill on easily there is metal enrichment, cause mill and grinding roller abrasion large, greatly reduce the problem in Vertical Mill life-span, present embodiments provide a kind of slag Vertical Mill deironing apparatus as depicted in figs. 1 and 2, comprise vertical mill casing, and be arranged on the mill 1 of vertical mill casing inside and be arranged on multiple grinding rollers 2 spaced apart above mill 1, be provided with rotation tramp iron separator between two grinding rollers 2 above described mill 1; Described rotation tramp iron separator comprises axle 3, magnet 4, cylindrical shell 5 and driving mechanism, described axle 3 is fixedly installed on the vertical mill casing of mill 1 top edges, and be provided with spacing between axle 3 lower end and mill 1, magnet 4 one end is fixed on axle 3, the other end is towards mill 1 axis, described cylindrical shell 5 is socketed in outside axle 3 and magnet 4, driving mechanism drives cylindrical shell 5 to rotate around axle 3, establish at regular intervals between cylindrical shell 5 and mill 1, this spacing is determined according to the material characteristic of the magnetic field intensity of magnet 4 and slag iron particle, makes the cylindrical shell 5 after magnetizing can adsorb iron particle in slag iron.
Wherein, the mill 1 of this slag Vertical Mill deironing apparatus, grinding roller 2, axle 3 and cylindrical shell 5 are made by metal material, make this device can not damage because of the high temperature in Vertical Mill like this.Described magnet 4 is fan-shaped permanent magnet or fan-shaped electromagnet.Mill 1 can be the wavy shaped configuration that middle high rim is low, is conducive to material like this to mill 1 edge landing, is convenient to rolling of grinding roller 2.
And as one preferred embodiment, cylindrical shell 5 is full-closed structure, magnet 4 is wrapped in cylindrical shell 5; Described driving mechanism comprises drive motors decelerator 6 and sprocket wheel chain driver group 7, sprocket wheel chain driver group 7 is connected with cylindrical shell 5, drive motors decelerator 6 provides power for cylindrical shell 5 rotates, sprocket wheel chain driver group 7 is as the transmission device of power, and cylindrical shell 5 rotates around axle 3 under the driving of drive motors decelerator 6 and sprocket wheel chain driver group 7; Drive motors decelerator 6 is arranged on outside vertical mill casing, and sprocket wheel chain driver group 7 is outside equipped with protective cover, and whole device is obtained for available protecting, can not be subject to the dust pollution of Vertical Mill.
As another kind of preferred embodiment, be all provided with rotation tramp iron separator between every two grinding rollers 2 on mill 1 in multiple grinding roller 2, such slag iron particle often rolls once with regard to magnetic separation once, and the abrasion of such slag iron to mill and grinding roller will be less.
The method for removing iron of this slag Vertical Mill deironing apparatus, specifically comprises the steps:
During vertical mill grinding material, generally can carry out magnetic separation before entering Vertical Mill, but some granule metallic irons can be consolidated with slag, are referred to as slag iron, the magnetic separation before Vertical Mill can cannot be selected.During Vertical Mill work, slag iron particle is by blanking tube 8 charging of mill 1 overcentre, and when mill 1 rotates, slag iron particle is subject to centrifugal force and outwards scatters, and slag iron particle is subject to rolling of grinding roller of vertical mill 2 and broken on mill 1, is separated into solid impurity particle and iron particle; At this moment, rotate the cylindrical shell 5 of tramp iron separator owing to being subject to the magnetic susceptibility of the magnet 4 of its inside, by iron granular absorption on cylindrical shell 5, rotate around axle 3 with cylindrical shell 5, magnet 4 is static, when iron particle rotates to mill 1 with cylindrical shell 5, when not having the region of magnet 4, cylindrical shell 5 is without magnetic, and iron particle departs from cylindrical shell 5 because of gravity, fall to outside mill 1, such iron particle can not stay on mill 1 and be subject to repeatedly rolling and denuding grinding roller 2 and mill 1 of grinding roller 2.
And for the ease of collecting iron particle, described mill 1 arranged outside has collecting bin 10; Collecting bin 10 bottom is provided with gate 9.Iron particle to fall into the iron powder collection storehouse 10 outside mill 1 after cylindrical shell 5 because gravity departs from, in collecting bin 10 iron powder collection to a certain extent after, the gate 9 of collecting bin 10 bottom can be opened by iron transfer of granules out, conveniently to collect.
In sum, this slag Vertical Mill deironing apparatus structure provided by the invention is simple, volume is little, be convenient to install, grinding and deironing can be carried out simultaneously, effectively remove the magnetic metal in vertical mill grinding, avoid magnetic metal enrichment on mill and cause the problem of the abrasion of mill and grinding roller, improve the service life of Vertical Mill, make Vertical Mill can as steel slag grinding equipment use.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.

Claims (8)

1. a slag Vertical Mill deironing apparatus, comprise vertical mill casing, and be arranged on the mill (1) of vertical mill casing inside and be arranged on mill (1) top multiple grinding rollers (2) spaced apart, it is characterized in that: between two grinding rollers (2) of described mill (1) top, be provided with rotation tramp iron separator; Described rotation tramp iron separator comprises axle (3), magnet (4), cylindrical shell (5) and driving mechanism, described axle (3) is fixedly installed on the vertical mill casing of mill (1) top edges, and be provided with spacing between axle (3) lower end and mill (1), magnet (4) one end is fixed on axle (3), the other end is towards mill (1) axis, described cylindrical shell (5) is socketed in axle (3) and magnet (4) outside, and driving mechanism drives cylindrical shell (5) to rotate around axle (3).
2. slag Vertical Mill deironing apparatus as claimed in claim 1, is characterized in that: described mill (1) arranged outside has collecting bin (10).
3. slag Vertical Mill deironing apparatus as claimed in claim 2, is characterized in that: described collecting bin (10) bottom is provided with gate (9).
4. slag Vertical Mill deironing apparatus as claimed in claim 1, is characterized in that: described magnet (4) is fan-shaped permanent magnet or fan-shaped electromagnet.
5. slag Vertical Mill deironing apparatus as claimed in claim 1, it is characterized in that: described cylindrical shell (5) is full-closed structure, magnet (4) is wrapped in cylindrical shell (5).
6. slag Vertical Mill deironing apparatus as claimed in claim 1; it is characterized in that: described driving mechanism comprises drive motors decelerator (6) and sprocket wheel chain driver group (7); drive motors decelerator (6) is arranged on outside vertical mill casing, and sprocket wheel chain driver group (7) is outside equipped with protective cover.
7. slag Vertical Mill deironing apparatus as claimed in claim 1, is characterized in that: be all provided with rotation tramp iron separator between every two grinding rollers (2) in described multiple grinding roller (2).
8. the method for removing iron of the slag Vertical Mill deironing apparatus as described in any one of claim 1 ~ 7, is characterized in that: first, and the slag iron on mill (1) rolls and is separated into solid impurity particle and iron particle by grinding roller (2); Then, drive motors decelerator (6) and transmission mechanism (7) drive cylindrical shell (5) to rotate around axle (3), cylindrical shell (5) side of parcel magnet (4) is subject to the magnetization of inner magnet (4), rotated around axle (3) on cylindrical shell (5) by iron granular absorption, magnet (4) is static; Finally, iron particle with cylindrical shell (5) rotate to mill (1) outward, cylindrical shell (5) loses magnetism, iron particle depart from cylindrical shell (5) collect.
CN201510840275.0A 2015-11-27 2015-11-27 Iron removing device of steel slag vertical mill and iron removing method of steel slag vertical mill CN105381880A (en)

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CN201510840275.0A CN105381880A (en) 2015-11-27 2015-11-27 Iron removing device of steel slag vertical mill and iron removing method of steel slag vertical mill

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106622499A (en) * 2016-12-27 2017-05-10 中冶南方工程技术有限公司 Steel slag horizontal roller mill iron removing device and iron removing method thereof
CN106733165A (en) * 2017-03-10 2017-05-31 北京矿冶研究总院 A kind of drum magnetic separator with broken and divergent function
CN109453856A (en) * 2018-12-27 2019-03-12 西安建筑科技大学 A kind of deironing apparatus for during vertical mill grinding and the Vertical Mill with the device

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3510071A (en) * 1967-06-29 1970-05-05 Foster Wheeler Corp Pyrite and tramp iron removal apparatus for coal pulverizers
JPS6223450A (en) * 1985-07-22 1987-01-31 Kawasaki Heavy Ind Ltd Vertical type mill capable of removing iron grain
JPH06210193A (en) * 1993-01-20 1994-08-02 Sumikin Kashima Kouka Kk Method and device for recovering grain iron for pulverization of blast furnace water granulated slag
CN1547509A (en) * 2001-08-23 2004-11-17 勒舍有限公司 Roller grinding mill and method for grinding materials that contain magnetizable components
CN102151604A (en) * 2010-12-27 2011-08-17 天津水泥工业设计研究院有限公司 Iron removal device in vertical roller mill
CN203355867U (en) * 2013-07-10 2013-12-25 程作男 Disc-type permanent magnetic separator
CN103480488A (en) * 2013-07-24 2014-01-01 江苏旌凯中科超导高技术有限公司 A dry method rotation plate type superconducting magnetic separation system and application technology thereof
CN204276052U (en) * 2014-10-14 2015-04-22 江苏大峘集团有限公司 A kind of slag vertical-mill possessing deferrization functional in mill
CN204583352U (en) * 2015-03-23 2015-08-26 中材装备集团有限公司 The deironing apparatus of vertical roller grinder system
CN205164952U (en) * 2015-11-27 2016-04-20 中冶南方工程技术有限公司 Slag grinds deironing device immediately

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3510071A (en) * 1967-06-29 1970-05-05 Foster Wheeler Corp Pyrite and tramp iron removal apparatus for coal pulverizers
JPS6223450A (en) * 1985-07-22 1987-01-31 Kawasaki Heavy Ind Ltd Vertical type mill capable of removing iron grain
JPH06210193A (en) * 1993-01-20 1994-08-02 Sumikin Kashima Kouka Kk Method and device for recovering grain iron for pulverization of blast furnace water granulated slag
CN1547509A (en) * 2001-08-23 2004-11-17 勒舍有限公司 Roller grinding mill and method for grinding materials that contain magnetizable components
CN102151604A (en) * 2010-12-27 2011-08-17 天津水泥工业设计研究院有限公司 Iron removal device in vertical roller mill
CN203355867U (en) * 2013-07-10 2013-12-25 程作男 Disc-type permanent magnetic separator
CN103480488A (en) * 2013-07-24 2014-01-01 江苏旌凯中科超导高技术有限公司 A dry method rotation plate type superconducting magnetic separation system and application technology thereof
CN204276052U (en) * 2014-10-14 2015-04-22 江苏大峘集团有限公司 A kind of slag vertical-mill possessing deferrization functional in mill
CN204583352U (en) * 2015-03-23 2015-08-26 中材装备集团有限公司 The deironing apparatus of vertical roller grinder system
CN205164952U (en) * 2015-11-27 2016-04-20 中冶南方工程技术有限公司 Slag grinds deironing device immediately

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106622499A (en) * 2016-12-27 2017-05-10 中冶南方工程技术有限公司 Steel slag horizontal roller mill iron removing device and iron removing method thereof
CN106733165A (en) * 2017-03-10 2017-05-31 北京矿冶研究总院 A kind of drum magnetic separator with broken and divergent function
CN106733165B (en) * 2017-03-10 2018-12-21 北京矿冶研究总院 It is a kind of with the broken drum magnetic separator with divergent function
CN109453856A (en) * 2018-12-27 2019-03-12 西安建筑科技大学 A kind of deironing apparatus for during vertical mill grinding and the Vertical Mill with the device

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Application publication date: 20160309