CN108405076A - Vertical mill, carbonization blast furnace slag breaking method and system - Google Patents

Vertical mill, carbonization blast furnace slag breaking method and system Download PDF

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Publication number
CN108405076A
CN108405076A CN201810183396.6A CN201810183396A CN108405076A CN 108405076 A CN108405076 A CN 108405076A CN 201810183396 A CN201810183396 A CN 201810183396A CN 108405076 A CN108405076 A CN 108405076A
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CN
China
Prior art keywords
blast furnace
furnace slag
carbonization
vertical mill
carbonization blast
Prior art date
Application number
CN201810183396.6A
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Chinese (zh)
Inventor
肖虎
宁波
撒益林
张科
宋伟
龙飞虎
Original Assignee
攀钢集团攀枝花钢钒有限公司
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Priority to CN201810183396.6A priority Critical patent/CN108405076A/en
Publication of CN108405076A publication Critical patent/CN108405076A/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
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
    • 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
    • B02C2015/002Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier

Abstract

The invention belongs to ore grinding technical fields, and in particular to a kind of vertical mill, carbonization blast furnace slag breaking method and system.Carbonization blast furnace slag breaking method disclosed by the invention, including step:Water quenching is carried out to carbonization blast furnace slag, obtains 5mm granular carbonization blast furnace slags below;Sizing screening is carried out to granular carbonization blast furnace slag, obtains coarse fraction carbonization blast furnace slag and fine fraction carbonization blast furnace slag;Being carbonized to coarse fraction, blast furnace slag progress is first to break, and coarse fraction carbonization is broken into fine fraction carbonization blast furnace slag;Vertical Mill is carried out to fine fraction carbonization blast furnace slag, during Vertical Mill, powder concentrator rotating speed is 100~130r/min, negative-pressure air fan rotating speed is 1000~1500r/min, grinding roller pressure is 3~9MPa, and returning charge amount is 10%~60%.By the way that the parameter of water quenching, sizing screening, the just technological processes such as broken, Vertical Mill is rationally arranged, carbonization blast furnace slag target phase product granularity is made, up to 65% or more, to improve the production capacity of carbonization blast furnace slag in the accounting of 100~450 mesh, reduce energy consumption.

Description

Vertical mill, carbonization blast furnace slag breaking method and system

Technical field

The invention belongs to ore grinding technical fields, and in particular to a kind of vertical mill, carbonization blast furnace slag breaking method and system.

Background technology

It is abundant to climb western titanium resource, through traditional blast furnace ironmaking-converter steelmaking process, most of titanium enters in blast furnace slag, high TiO in clinker2Content is 20~26%, founds the factory so far from steel is climbed, has stored up more than 6,500 ten thousand tons of blast furnace slag.For blast furnace Slag, domestic many research institutions once carried out it is a variety of propose the research of titanium technology path, for example produce silicon titanium composite alloy, production mine Slag microcrystalline glass etc., but processing capacity is limited, cannot fundamentally solve the problem of complex utilization of titanium-containing blast furnace slag.Currently, high " high temperature cabonization-low temperature chlorination produces TiCl to titanium blast furnace slag4" process route be most industrialization prospect technology path, work Skill is divided into three high temperature cabonization, low-temperature boiling chlorination and the utilization of chloride residue steps, has that flow is short, treating capacity is big, titanium money The advantages that source comprehensive utilization ratio is high.

Carbide slag is the product of high temperature cabonization, to meet the requirement of low temperature chlorination, needs to be finely ground to certain granularity It is required that and requiring 100~450 mesh yield rate of specialities granularity section up to 60% or more.Traditional handicraft carbide slag is adopted when slagging tap With slag pan slag, slightly to be broken using jaw crusher after air-cooled, roller pair breaking, ball milling etc., process flow is long, labor intensity is big, Processing cost is high, and yield rate is low, needs to seek the method that new, low cost prepares carbide slag fine powder thus.

Invention content

The technical problem to be solved by the present invention is to:Carbide slag finished product rate can be improved, reduce energy consumption by providing one kind Vertical mill, carbonization blast furnace slag breaking method and system.

The present invention solves the blast furnace slag breaking method that is carbonized used by its technical problem, includes the following steps

S1, water quenching is carried out to carbonization blast furnace slag, obtains 5mm granular carbonization blast furnace slags below;

S2, sizing screening is carried out to granular carbonization blast furnace slag, obtains coarse fraction carbonization blast furnace slag and fine fraction carbonization blast furnace Slag;

S3, the blast furnace slag that is carbonized to coarse fraction just break, and coarse fraction carbonization is broken into fine fraction carbonization blast furnace slag;

S4, be carbonized to fine fraction blast furnace slag progress Vertical Mill, and during Vertical Mill, motor speed is 100~130r/min, negative pressure Rotation speed of fan is 1000~1500r/min, grinding roller pressure is 3~9MPa, and returning charge amount is 10%~60%;Used in this step Vertical mill there is stator vane, the stator vane is arranged around rotor blade.

Further, in step S1, when water quenching, between 0.2~0.6Mpa, the frequency for controlling motor exists control hydraulic pressure Between 30~50Hz.

Further, in step S2, granular carbonization blast furnace slag of the grain size less than 2~2.2mm is fine fraction carbonization blast furnace Slag, remaining granular carbonization blast furnace slag are coarse fraction carbonization blast furnace slag.

Further, in step S3, roller pair breaking carried out to coarse fraction carbonization blast furnace slag, control roll gap gap 2~ Between 2.2mm.

The present invention solves vertical mill used by its technical problem, including rotor blade, and the rotor blade setting is turning On axis, it is characterised in that:It further include the stator vane being arranged around rotor blade.

Further, the cross section of the stator vane is S-shaped.

Further, the stator vane is evenly provided on around the rotor blade.

Further, being provided with 24 groups of stator vanes around the rotor blade.

The present invention solves the blast furnace slag crushing system that is carbonized used by its technical problem, including water quenching equipment, sizing screening Equipment, just broken equipment and vertical mill as described above, the discharge port of the water quenching equipment correspond to the screening equipment into Material mouth, the discharge port of the screening equipment correspond to the feed inlet of the just broken equipment, the discharge port pair of the just broken equipment Answer the feed inlet of the vertical mill.

Further, control of the screening equipment with 2~2.2mm is sieved.

The beneficial effects of the invention are as follows:By the ginseng that water quenching, sizing screening, the just technological processes such as broken, Vertical Mill are rationally arranged Number realizes carbonization blast furnace slag target phase product granularity in 100~450 mesh accountings up to 65% or more, and this method solve carbonizations The problem of blast furnace slag crosses low grinding, production capacity, high energy consumption using traditional ball-milling technology.

Description of the drawings

Fig. 1 is the partial structural diagram of one embodiment of vertical mill of the present invention;

Fig. 2 is the cross-sectional view of one embodiment of the stator vane in Fig. 1;

Fig. 3 is the structural schematic diagram of one embodiment of carbonization blast furnace slag crushing system of the present invention;

Parts, position and number in figure:Vertical mill 1, rotor blade 11, shaft 12, stator vane 13, water quenching equipment 2, Screening equipment 3, just broken equipment 4.

Specific implementation mode

The invention will be further described below in conjunction with the accompanying drawings.

The carbonization blast furnace slag breaking method of the present invention, includes the following steps

S1, water quenching is carried out to carbonization blast furnace slag, obtains 5mm granular carbonization blast furnace slags below;It can lead to during water quenching It crosses control hydraulic pressure and water velocity obtains the carbonization blast furnace slag of certain grain size;For example, high in order to obtain 5mm granular carbonizations below Clinker, can be by the hydraulic pressure control during water quenching between 0.2~0.6Mpa, and water velocity is real by the frequency for controlling motor It is existing, at this time can be by the FREQUENCY CONTROL of motor between 30~50Hz, motor is used to provide the power pumped;

S2, sizing screening is carried out to granular carbonization blast furnace slag, obtains coarse fraction carbonization blast furnace slag and fine fraction carbonization blast furnace Slag;For thickness herein is the granular carbonization blast furnace slag obtained in opposite step S1, for example, if specified particle size 2mm with Under granular carbonization blast furnace slag be fine fraction be carbonized blast furnace slag, then grain size more than 2mm granular carbonization blast furnace slag just be coarse grain Grade carbonization blast furnace slag;

S3, the blast furnace slag that is carbonized to coarse fraction just break, and coarse fraction carbonization is broken into fine fraction carbonization blast furnace slag;This step Suddenly it in, needs to make it become fine fraction carbonization blast furnace by just broken the coarse fraction screened in step S2 carbonization blast furnace slag Slag is handled all fine fraction carbonization blast furnace slags with facilitating in next step;

S4, be carbonized to fine fraction blast furnace slag progress Vertical Mill, and during Vertical Mill, motor speed is 100~130r/min, negative pressure Rotation speed of fan is 1000~1500r/min, grinding roller pressure is 3~9MPa, and returning charge amount is 10%~60%;Used in this step Vertical mill there is stator vane 13, the stator vane 13 is arranged around rotor blade 11.By the way that stator vane is arranged 13, carbonization blast furnace slag can be increased and select mill diagram diameter in vertical mill, blast furnace slag fully crushes so as to be carbonized.

The carbonization blast furnace slag breaking method of the present invention is by being rationally arranged water quenching, sizing screening, just the techniques stream such as broken, Vertical Mill The parameter of journey realizes carbonization blast furnace slag target phase product granularity in 100~450 mesh accountings up to 65% or more, and this method solves The problem of carbonization blast furnace slag crosses low grinding, production capacity, high energy consumption using traditional ball-milling technology.

Specifically, in step S2, when carrying out sizing screening to carbonization blast furnace slag, grain size can be selected to be less than the grain of 2~2.2mm Shape is carbonized blast furnace slag as fine fraction carbonization blast furnace slag, remaining granular carbonization blast furnace slag is coarse fraction carbonization blast furnace slag.Preferably, grain Granular carbonization blast furnace slag of the diameter less than 2mm is fine fraction carbonization blast furnace slag, remaining granular carbonization blast furnace slag is that coarse fraction carbonization is high Clinker.The grain size of fine fraction carbonization blast furnace slag is limited in what a certain range or less can make it during the Vertical Mill of step S4 Grinding efficiency.

Correspondingly, high in order to enable the first broken technique of step S3 that coarse fraction carbonization blast furnace slag is ground into fine fraction carbonization Clinker carries out roller pair breaking to the coarse fraction carbonization blast furnace slag screened, and control roll gap gap is between 2~2.2mm.

As depicted in figs. 1 and 2, vertical mill of the invention, including rotor blade 11, the rotor blade 11 are arranged in shaft Further include stator vane 13, the cross section of the stator vane 12 is S-shaped on 12.The stator vane 13 of S-shaped can increase carbonization Blast furnace slag selects mill diagram diameter in vertical mill, and so as to be carbonized, blast furnace slag fully crushes.Former Vertical Mill rotor blade 11 is with axis It holds and rotates together, rotary speed is adjustable, has dynamic and powder is selected to energize;After transformation, stator vane 13 is increased, stator vane 13 is not It is rotated with vertical mill, Vertical Mill rotor blade 11 is rotated together with vertical mill, and rotating speed is adjustable, is realized that " static-dynamic " combine selects powder, is increased Add the blocking rate of coarse granule material, reduces the percent of pass of coarse granule material.Certainly, stator vane 12 can also be that other can Increase the curve form for selecting sub-path.

Specifically, in order to further increase vertical mill to the crush efficiency for the blast furnace slag that is carbonized, the stator vane 12 is equably It is arranged around the rotor blade 11.Specifically, being provided with 24 groups of stator vanes 12 around the rotor blade 11.

As shown in figure 3, the carbonization blast furnace slag crushing system of the present invention, including it is water quenching equipment 2, screening equipment 3, just broken The discharge port of equipment 4 and vertical mill as described above 1, the water quenching equipment 2 corresponds to the feed inlet of the screening equipment 3, The discharge port of the screening equipment 3 corresponds to the feed inlet of the just broken equipment 4, and the discharge port of the just broken equipment 4 corresponds to The feed inlet of the vertical mill 1.Water quenching equipment 2 is used to carry out water quenching, the granular carbonization being tentatively crushed to carbonization blast furnace slag Blast furnace slag;Screening equipment 3 is used to carry out sizing screening to the granular carbonization blast furnace slag that water quenching obtains, and filters out coarse fraction carbon Change blast furnace slag and fine fraction carbonization blast furnace slag;Just broken equipment 4 is used to be crushed coarse fraction carbonization blast furnace slag, it is made to become thin Grade carbonization blast furnace slag;Vertical mill 1, which is used to all fine fractions carbonization blast furnace slag be crushed, selects powder.This system is for being crushed carbon Change blast furnace slag when, can improve carbonization blast furnace slag target phase product granularity 100~450 mesh accounting.

Specifically, control of the screening equipment 3 with 2~2.2mm is sieved.This control sifter device has a diameter of 2~ The sieve pore of 2.2mm makes grain size pass through in 2~2.2mm carbonization blast furnace slags below, to screen out coarse fraction carbonization blast furnace slag and Fine fraction carbonization blast furnace slag.

Since there is remaining TiC higher hardness, common crushing system can not realize to carbon in carbonization blast furnace slag Change the broken of blast furnace slag or not high to the crushing efficiency for the blast furnace slag that is carbonized, the requirement to product grading cannot be met.

Embodiment

It obtains obtaining 200 tons of the carbonization blast furnace slag less than 5mm by water quenching in certain production, be obtained by sizing screening Carbonization blast furnace slag hundredweight less than 2mm, about 80 tons of the carbonization blast furnace slag of 2mm~5mm.Adjustment is 2mm to roller gap gap, 80 tons of 2~5mm carbonization blast furnace slags are crushed to 2mm or less.2mm 200 tons of carbonizations blast furnace slags below are packed into vertical mill material Storehouse, adjustment vertical mill grinding roller pressure are 6MPa, and negative-pressure air fan rotating speed is 1250r/min, and motor speed 115r/min starts to produce It is afterwards 35% by adjusting charging rate to control returning charge amount.Carbonization blast furnace slag target phase product is obtained under the conditions of this technological parameter Granularity reaches 65% in the accounting of 100~450 mesh, improves 80% compared to traditional ball-milling technology, energy consumption reduces about 20%.

Claims (10)

1. be carbonized blast furnace slag breaking method, it is characterised in that:Include the following steps
S1, water quenching is carried out to carbonization blast furnace slag, obtains 5mm granular carbonization blast furnace slags below;
S2, sizing screening is carried out to granular carbonization blast furnace slag, obtains coarse fraction carbonization blast furnace slag and fine fraction carbonization blast furnace slag;
S3, the blast furnace slag that is carbonized to coarse fraction just break, and coarse fraction carbonization is broken into fine fraction carbonization blast furnace slag;
S4, be carbonized to fine fraction blast furnace slag progress Vertical Mill, and during Vertical Mill, motor speed is 100~130r/min, negative-pressure air fan Rotating speed is 1000~1500r/min, grinding roller pressure is 3~9MPa, and returning charge amount is 10%~60%;It is vertical used in this step There is grinding machine stator vane (13), the stator vane (13) to be arranged around rotor blade (11).
2. carbonization blast furnace slag breaking method according to claim 1, it is characterised in that:In step S1, when water quenching, water is controlled It is pressed between 0.2~0.6Mpa, controls the frequency of motor between 30~50Hz.
3. carbonization blast furnace slag breaking method according to claim 1, it is characterised in that:In step S2, grain size be less than 2~ The granular carbonization blast furnace slag of 2.2mm is fine fraction carbonization blast furnace slag, remaining granular carbonization blast furnace slag is coarse fraction carbonization blast furnace slag.
4. carbonization blast furnace slag breaking method according to claim 1, it is characterised in that:In step S3, it is carbonized to coarse fraction Blast furnace slag carries out roller pair breaking, and control roll gap gap is between 2~2.2mm.
5. for the vertical mill of the carbonization blast furnace slag breaking method described in any claim in Claims 1-4, including rotor Blade (11), the rotor blade (11) are arranged in shaft (12), it is characterised in that:Further include being arranged in rotor blade (11) The stator vane (13) of surrounding.
6. vertical mill according to claim 5, it is characterised in that:The cross section of the stator vane (13) is S-shaped.
7. vertical mill according to claim 5, it is characterised in that:The stator vane (13) is evenly provided on described turn Around blades (11).
8. vertical mill according to claim 6, it is characterised in that:It is provided with 24 groups around the rotor blade (11) Stator vane (13).
9. be carbonized blast furnace slag crushing system, it is characterised in that:Including water quenching equipment (2), screening equipment (3), just break equipment (4) discharge port of the vertical mill (1) and as described in any claim in claim 5 to 8, the water quenching equipment (2) corresponds to The discharge port of the feed inlet of the screening equipment (3), the screening equipment (3) corresponds to the just broken equipment (4) The discharge port of feed inlet, the just broken equipment (4) corresponds to the feed inlet of the vertical mill (1).
10. carbonization blast furnace slag crushing system according to claim 9, it is characterised in that:Screening equipment (3) tool There is the control of 2~2.2mm to sieve.
CN201810183396.6A 2018-03-06 2018-03-06 Vertical mill, carbonization blast furnace slag breaking method and system CN108405076A (en)

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CN201810183396.6A CN108405076A (en) 2018-03-06 2018-03-06 Vertical mill, carbonization blast furnace slag breaking method and system

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CN201810183396.6A CN108405076A (en) 2018-03-06 2018-03-06 Vertical mill, carbonization blast furnace slag breaking method and system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109174318A (en) * 2018-08-30 2019-01-11 攀钢集团攀枝花钢铁研究院有限公司 The method that clinker containing titanium carbide removes iron

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2488589Y (en) * 2001-07-20 2002-05-01 北京圆海正粉体技术有限公司 A new type Ramon grinder for processing microfine powder
CN1803303A (en) * 2006-01-24 2006-07-19 庞德明 Dry-type centrifugal ore dressing machine
CN1803297A (en) * 2006-01-24 2006-07-19 庞德明 Compound type regrind mill
CN2889504Y (en) * 2006-01-24 2007-04-18 庞德明 Dry type centrifugal concentrating machine
CN202621230U (en) * 2012-02-13 2012-12-26 宇部兴产机械株式会社 Vertical grinder
CN104058609A (en) * 2014-05-30 2014-09-24 马钢(集团)控股有限公司 Production method of steel slag composite micropowder
CN205517995U (en) * 2016-03-22 2016-08-31 中材装备集团有限公司 Novel vertical roller mill with mechanism is derived outward to crocus
CN106269173A (en) * 2016-10-09 2017-01-04 攀钢集团攀枝花钢铁研究院有限公司 A kind of breaking method of carbide slag

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2488589Y (en) * 2001-07-20 2002-05-01 北京圆海正粉体技术有限公司 A new type Ramon grinder for processing microfine powder
CN1803303A (en) * 2006-01-24 2006-07-19 庞德明 Dry-type centrifugal ore dressing machine
CN1803297A (en) * 2006-01-24 2006-07-19 庞德明 Compound type regrind mill
CN2889504Y (en) * 2006-01-24 2007-04-18 庞德明 Dry type centrifugal concentrating machine
CN202621230U (en) * 2012-02-13 2012-12-26 宇部兴产机械株式会社 Vertical grinder
CN104058609A (en) * 2014-05-30 2014-09-24 马钢(集团)控股有限公司 Production method of steel slag composite micropowder
CN205517995U (en) * 2016-03-22 2016-08-31 中材装备集团有限公司 Novel vertical roller mill with mechanism is derived outward to crocus
CN106269173A (en) * 2016-10-09 2017-01-04 攀钢集团攀枝花钢铁研究院有限公司 A kind of breaking method of carbide slag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109174318A (en) * 2018-08-30 2019-01-11 攀钢集团攀枝花钢铁研究院有限公司 The method that clinker containing titanium carbide removes iron

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