CN205710796U - Process the system of high-phosphorus iron ore - Google Patents
Process the system of high-phosphorus iron ore Download PDFInfo
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- CN205710796U CN205710796U CN201620629877.1U CN201620629877U CN205710796U CN 205710796 U CN205710796 U CN 205710796U CN 201620629877 U CN201620629877 U CN 201620629877U CN 205710796 U CN205710796 U CN 205710796U
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Abstract
The utility model discloses the system processing high-phosphorus iron ore, system includes: high-phosphorus iron ore breaker, has high-phosphorus iron ore entrance and the outlet of high-phosphorus iron ore broken material；Reducing agent breaker, has reducing agent entrance and the outlet of reducing agent broken material；Gasification revolving bed, export including high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire, reducing agent stone or metal plate for standing a stove on as a precaution against fire, high-phosphorus iron ore broken material entrance, reducing agent broken material entrance, reducing gases entrance and reduzate, high-phosphorus iron ore broken material entrance is connected with the outlet of high-phosphorus iron ore broken material, and reducing agent broken material entrance is connected with the outlet of reducing agent broken material；Granulating unit, has reduzate outlet after solid reduction product entrance and shrend, and solid reduction product entrance is connected with solid reduction product outlet；Mill ore magnetic selection device, after having shrend, reduzate entrance, iron powder outlet and mine tailing export, and after shrend, reduzate entrance is connected with reduzate outlet after shrend.Use this system can high-phosphorus iron ore be efficiently treated through, and gained iron powder grade is higher.
Description
Technical field
This utility model belongs to metallurgical metal field, and specifically, this utility model relates to a kind of process and processes high ferrophosphorus
The system in ore deposit.
Background technology
Along with the development of world steel industry, substantial amounts of high-quality iron ore is by depleted, and iron ore inferior is also
Unrealized effective utilization.Wherein high-phosphorus iron ore is the one of iron ore inferior, belongs to phosphorus associated minerals, and its disseminated grain size is thin and phase
Parcel mutually, it is difficult to dissociating, phosphorus is mainly scattered in iron mineral, removing difficulty, the utilization causing this type of ore deposit is little.
China's high-phosphorus iron ore is the abundantest, if a kind of technology and good in economic efficiency process can be found, must solve
The supply problem of China's ironmaking Ore.
Utility model content
One of technical problem that this utility model is intended to solve in correlation technique the most to a certain extent.To this end, this reality
It is to propose a kind of system processing high-phosphorus iron ore by a novel purpose, uses this system high-phosphorus iron ore can be carried out height
Effect processes, and gained iron powder has relatively high-grade.
At an aspect of the present utility model, the utility model proposes a kind of system processing high-phosphorus iron ore.According to this
The embodiment of utility model, this system includes:
High-phosphorus iron ore breaker, described high-phosphorus iron ore breaker has high-phosphorus iron ore entrance and high-phosphorus iron ore broken material
Outlet；
Reducing agent breaker, described reducing agent breaker has reducing agent entrance and the outlet of reducing agent broken material；
Gasification revolving bed, described gasification revolving bed includes:
High-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire, described high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire is spindle rotationally arranged in inside described gasification revolving bed, and edge
The rotation direction of described high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire, described high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire is disposed with high-phosphorus iron ore feed zone, high phosphorus
Iron ore reduction district and solid reduction product discharge zone, be provided with height on the gasification revolving bed sidewall of described high-phosphorus iron ore feed zone
Fosfosiderite broken material entrance, described high-phosphorus iron ore broken material entrance is connected, described solid with the outlet of described high-phosphorus iron ore broken material
Solid reduction product outlet is set on the gasification revolving bed sidewall of body reduzate discharge zone, described high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire sets
It is equipped with the first through hole；
Reducing agent stone or metal plate for standing a stove on as a precaution against fire, described reducing agent stone or metal plate for standing a stove on as a precaution against fire is spindle rotationally arranged in described gasification revolving bed inside and is positioned at described height
The lower section of fosfosiderite stone or metal plate for standing a stove on as a precaution against fire, and along the rotation direction of described reducing agent stone or metal plate for standing a stove on as a precaution against fire, described reducing agent stone or metal plate for standing a stove on as a precaution against fire is disposed with
Slag discharge zone after reducing agent feed zone, reducing agent reducing zone and reduction, at the gasification revolving bed sidewall of described reducing agent feed zone
On be provided with reducing agent broken material entrance, described reducing agent broken material entrance is connected, in institute with the outlet of described reducing agent broken material
Slag outlet after reduction is set on the gasification revolving bed sidewall of slag discharge zone after stating reduction, described reducing agent stone or metal plate for standing a stove on as a precaution against fire is provided with the
Two through holes；
Multiple radiation heating tubes, the plurality of radiation heating tube is arranged on the inwall of described gasification revolving bed；
Reducing gases entrance, described reducing gases entrance is arranged on the bottom of described gasification revolving bed and is positioned at described reducing agent stove
The lower section of dish；
Offgas outlet, described offgas outlet is arranged on the top of described gasification revolving bed and is positioned at described high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire
Top；
Granulating unit, described granulating unit has reduzate outlet after solid reduction product entrance and shrend, described solid
Body reduzate entrance is connected with the outlet of described solid reduction product；
Mill ore magnetic selection device, described mill ore magnetic selection device there is shrend after reduzate entrance, iron powder outlet and mine tailing go out
Mouthful, after described shrend, reduzate entrance is connected with reduzate outlet after described shrend.
Thus, pass through to set respectively in gasification revolving bed according to the system processing high-phosphorus iron ore of this utility model embodiment
Set high fosfosiderite stone or metal plate for standing a stove on as a precaution against fire and reducing agent stone or metal plate for standing a stove on as a precaution against fire, and high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire be positioned at the top of reducing agent stone or metal plate for standing a stove on as a precaution against fire, i.e. high-phosphorus iron ore with
Reducing agent is not directly contacted with so that the reducing agent arranged on reducing agent stone or metal plate for standing a stove on as a precaution against fire generating gasification reaction under the effect of reducing gases obtains
Gas after reduction containing carbon monoxide and hydrogen, after this reduction gas contact with the high-phosphorus iron ore broken material on high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire into
Row reduction reaction, such that it is able to significantly improve reduction effect, simultaneously more existing employing reducing agent mixes with high-phosphorus iron ore and carries out
The mode of reduction is compared, and the reducing agent in the application is not directly contacted with high-phosphorus iron ore, so that the impurity in reducing agent is i.e.
Harmful element such as S, P etc. will not enter in the material after reduction, and then i.e. can get low-phosphorous through follow-up shrend and mill ore magnetic selection
High-grade iron powder.
It addition, can also have following additional according to the system processing high-phosphorus iron ore of this utility model above-described embodiment
Technical characteristic:
Optional, the vertical dimension between described high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire and described reducing agent stone or metal plate for standing a stove on as a precaution against fire is 300～1000mm.
Thus, it is possible to significantly improve the reduction effect of high-phosphorus iron ore.
Optional, the diameter of described first through hole and the second through hole is separately 2～8mm.Thus, it is possible to further
Improve the reduction effect of high-phosphorus iron ore.
Additional aspect of the present utility model and advantage will part be given in the following description, and part will be from explained below
In become obvious, or recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage are from combining general the accompanying drawings below description to embodiment
Become obvious and easy to understand, wherein:
Fig. 1 is the system structure schematic diagram processing high-phosphorus iron ore according to one embodiment of this utility model；
Fig. 2 is the master according to the gasification revolving bed in the system processing high-phosphorus iron ore of this utility model further embodiment
View；
Fig. 3 is according in the gasification revolving bed in the system processing high-phosphorus iron ore of another embodiment of this utility model
The top view of high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire；
Fig. 4 is according in the gasification revolving bed in the system processing high-phosphorus iron ore of another embodiment of this utility model
The top view of reducing agent stone or metal plate for standing a stove on as a precaution against fire；
Fig. 5 is the method stream that the system processing high-phosphorus iron ore according to one embodiment of this utility model processes high-phosphorus iron ore
Journey schematic diagram.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most ad initio
Represent same or similar element to same or similar label eventually or there is the element of same or like function.Below by ginseng
It is exemplary for examining the embodiment that accompanying drawing describes, it is intended to be used for explaining this utility model, and it is not intended that to this utility model
Restriction.
In description of the present utility model, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width
Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward ",
Orientation or the position relationship of the instruction such as " clockwise ", " counterclockwise ", " axially ", " radially ", " circumferential " are based on shown in the drawings
Orientation or position relationship, be for only for ease of and describe this utility model and simplify description rather than instruction or the dress of hint indication
Put or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this utility model
Restriction.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two
Individual, three etc., unless otherwise expressly limited specifically.
In this utility model, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " Gu
Fixed " etc. term should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be
It is mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal or the interaction relationship of two elements, unless otherwise clear and definite restriction.Common skill for this area
For art personnel, above-mentioned term concrete meaning in this utility model can be understood as the case may be.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score
Can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, first is special
Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " permissible
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
At an aspect of the present utility model, the utility model proposes a kind of system processing high-phosphorus iron ore.According to this
The embodiment of utility model, with reference to Fig. 1, this system includes: high-phosphorus iron ore breaker 100, reducing agent breaker 200, gas
Change revolving bed 300, granulating unit 400 and mill ore magnetic selection device 500.
According to embodiment of the present utility model, high-phosphorus iron ore breaker 100 has high-phosphorus iron ore entrance 101 and high ferrophosphorus
Ore deposit broken material outlet 102, and be suitable to high-phosphorus iron ore is carried out break process, such that it is able to obtain high-phosphorus iron ore broken material.Thus,
Can significantly improve during sequential reduction with reduction after the contact area of gas, thus improve the reduction effect of high-phosphorus iron ore.
According to an embodiment of the present utility model, the particle diameter of high-phosphorus iron ore broken material is not particularly restricted, this area
Technical staff can select according to actual needs, according to specific embodiment of the utility model, high-phosphorus iron ore broken material grain
Footpath can be not higher than 15mm, and the particle diameter of this high-phosphorus iron ore broken material should be greater than the straight of the first through hole on high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire
Footpath.Thus, it is possible to improve the reduction effect of high-phosphorus iron ore further.
According to further embodiment of the present utility model, the water content in high-phosphorus iron ore broken material is not particularly restricted,
Those skilled in the art can select according to actual needs, and according to specific embodiment of the utility model, high-phosphorus iron ore breaks
Moisture in particle can be not higher than 1wt%.Thus, it is possible to improve the reduction effect of high-phosphorus iron ore further.
According to embodiment of the present utility model, reducing agent breaker 200 has reducing agent entrance 201 and reducing agent crushes
Material outlet 202, and be suitable to reducing agent is carried out break process, such that it is able to obtain reducing agent broken material.Thus, it is possible to significantly carry
Its contact area with reducing gases high, thus improve the gasification efficiency of reducing agent.
According to an embodiment of the present utility model, the particle diameter of reducing agent broken material is not particularly restricted, this area skill
Art personnel can select according to actual needs, according to specific embodiment of the utility model, the particle diameter of reducing agent broken material
30mm can be not higher than, and the particle diameter of this reducing agent broken material should be greater than the diameter of the second through hole on reducing agent stone or metal plate for standing a stove on as a precaution against fire.By
This, can significantly improve the gasification efficiency of reducing agent, and then improve the reduction effect of high-phosphorus iron ore further.
According to further embodiment of the present utility model, the water content in reducing agent broken material is not particularly restricted, this
Skilled person can select according to actual needs, according to specific embodiment of the utility model, reducing agent broken material
In moisture can be not higher than 1wt%.Thus, it is possible to improve the reduction effect of high-phosphorus iron ore further.
According to another embodiment of the present utility model, the particular type of reducing agent is not particularly restricted, this area skill
Art personnel can select according to actual needs, and according to specific embodiment of the utility model, reducing agent can be selected from non-
At least one in coking coal and semi-coke.Thus, it is possible to improve the reduction effect of high-phosphorus iron ore further.
According to another embodiment of the present utility model, in reducing agent, fixed carbon content is not particularly restricted, this area
Technical staff can select according to actual needs, and according to specific embodiment of the utility model, in reducing agent, fixed carbon contains
Amount can be not less than 50%.Thus, it is possible to significantly improve the gasification efficiency of reducing agent, and then improve going back of high-phosphorus iron ore further
Former effect.
According to embodiment of the present utility model, with reference to Fig. 1 and 2, gasification revolving bed 300 includes high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire 31, goes back
Former dose of stone or metal plate for standing a stove on as a precaution against fire 32, radiation heating tube 33, high-phosphorus iron ore broken material entrance 301, reducing agent broken material entrance 302, reducing gases entrance
303, slag outlet 306 after offgas outlet 304, reduzate outlet 305 and reduction, high-phosphorus iron ore broken material entrance 301 and high phosphorus
Iron mine broken material outlet 102 is connected, and reducing agent broken material entrance 302 is connected with reducing agent broken material outlet 202, and is suitable to height
Fosfosiderite broken material is laid on the high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire in gasification revolving bed, and reducing agent broken material is laid on gasification revolving bed
On interior reducing agent stone or metal plate for standing a stove on as a precaution against fire, in order to use reducing gases that reducing agent is carried out reduction treatment, gas after gas after being reduced, and reduction
High-phosphorus iron ore broken material is carried out reduction treatment, obtains solid reduction product and tail gas.
According to an embodiment of the present utility model, with reference to Fig. 3, high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire 31 is spindle rotationally arranged in gasification rotation
The inside of rotated bed 300, and along the rotation direction of high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire 31, high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire 31 is disposed with high phosphorus
Iron mine feed zone 311, high-phosphorus iron ore reducing zone 312 and solid reduction product discharge zone 313, and high-phosphorus iron ore broken material entrance
301 are arranged on the gasification revolving bed sidewall of high-phosphorus iron ore feed zone 311, and solid reduction product outlet 305 is arranged on solid also
Originate on the gasification revolving bed sidewall of thing discharge zone 313, and on high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire 31, be provided with the first through hole 34, thus
After the reduction containing carbon monoxide and hydrogen obtained by after making to be gasified by reducing agent, gas is through the first through hole and high-phosphorus iron ore stove
There is reduction reaction in the high-phosphorus iron ore broken material contact on dish.
According to a specific embodiment of the present utility model, the high-phosphorus iron ore thickness of feed layer being laid on high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire
Being not particularly restricted, those skilled in the art can select according to actual needs, specifically shows according to of the present utility model
Example, the high-phosphorus iron ore thickness of feed layer being laid on high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire can be 25～40mm.Inventor finds, if high-phosphorus iron ore
The blocked up meeting of the bed of material has a strong impact on its breathability, thus the contact area of gas after reducing high-phosphorus iron ore and reduction, and then reduce high phosphorus
The reduction effect of iron mine.
According to further embodiment of the present utility model, with reference to Fig. 4, reducing agent stone or metal plate for standing a stove on as a precaution against fire 32 is spindle rotationally arranged in gasification rotation
The inside of rotated bed 300 and be positioned at the lower section of high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire 31, and along the rotation direction of reducing agent stone or metal plate for standing a stove on as a precaution against fire 32, reducing agent
It is disposed with slag discharge zone 323 after reducing agent feed zone 321, reducing agent reducing zone 322 and reduction on stone or metal plate for standing a stove on as a precaution against fire 32, and reduces
Agent broken material entrance 302 is arranged on the gasification revolving bed sidewall of reducing agent feed zone 321, and after reduction, slag outlet 306 is arranged on
Arrange on the gasification revolving bed sidewall of slag discharge zone 323 after reduction, and on reducing agent stone or metal plate for standing a stove on as a precaution against fire 32, be provided with the second through hole
35, so that the reducing agent broken material that reducing gases is on the second through hole with reducing agent stone or metal plate for standing a stove on as a precaution against fire carries out basis, thus contained
Gas after the reduction of carbon monoxide and hydrogen.
According to a specific embodiment of the present utility model, the reducing agent thickness of feed layer being laid on reducing agent stone or metal plate for standing a stove on as a precaution against fire is not
Being particularly limited, those skilled in the art can select according to actual needs, according to concrete example of the present utility model, paving
The reducing agent thickness of feed layer being located on reducing agent stone or metal plate for standing a stove on as a precaution against fire can be 50～120mm.Inventor finds, if reducing agent thickness of feed layer mistake
Thickness can have a strong impact on breathability, thus has a strong impact on the gasification efficiency of reducing agent, and then reduces the utilization rate of reducing agent.
According to another specific embodiment of the present utility model, the diameter of the first through hole 34 and the second through hole 35 is not by spy
Not limiting, those skilled in the art can select according to actual needs, according to specific embodiment of the utility model, and first
The diameter of through hole and the second through hole is separately 2～8mm.
According to another specific embodiment of the present utility model, hanging down between high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire 31 and reducing agent stone or metal plate for standing a stove on as a precaution against fire 32
Straight distance is not particularly restricted, and those skilled in the art can select according to actual needs, according to of the present utility model
Specific embodiment, the vertical dimension between high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire and reducing agent stone or metal plate for standing a stove on as a precaution against fire can be 300～1000mm.
Inventor finds, by being respectively provided with high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire and reducing agent stone or metal plate for standing a stove on as a precaution against fire in gasification revolving bed and high
Fosfosiderite stone or metal plate for standing a stove on as a precaution against fire is positioned at the top of reducing agent stone or metal plate for standing a stove on as a precaution against fire, i.e. high-phosphorus iron ore and is not directly contacted with reducing agent so that on reducing agent stone or metal plate for standing a stove on as a precaution against fire
The reducing agent arranged generating gasification reaction under the effect of reducing gases obtains gas after the reduction containing carbon monoxide and hydrogen, should be also
Former rear gas contacts with the high-phosphorus iron ore broken material on high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire and carries out reduction reaction, such that it is able to significantly improve reduction effect
Really, simultaneously more existing employing reducing agent carries out compared with the mode reduced with high-phosphorus iron ore mixing, the reducing agent in the application with
High-phosphorus iron ore is not directly contacted with, so that after the impurity in reducing agent i.e. harmful element such as S, P etc. will not enter into reduction
In material, and then i.e. can get low-phosphorous high-grade iron powder through subsequent processes.
According to another embodiment of the present utility model, radiation heating tube 33 can be multiple, and multiple radiation heating
Pipe 33 is arranged on the inwall of gasification revolving bed 300, and those skilled in the art can be according to actual needs to radiation heating tube
Arrangement selects, as long as homogeneous temperature in gasification revolving bed can be kept.
According to another embodiment of the present utility model, reducing gases entrance 303 be arranged on gasification revolving bed 300 bottom and
It is positioned at the lower section of reducing agent stone or metal plate for standing a stove on as a precaution against fire 32, and is suitable to supply reducing gases in gasification revolving bed, in order to reducing agent is carried out at gasification
Reason, such that it is able to obtain gas after the reduction containing carbon monoxide and hydrogen.
According to a specific embodiment of the present utility model, in reducing gases, the content of oxygen and water is not particularly restricted,
Those skilled in the art can select according to actual needs, and such as, in reducing gases, the volume fraction of oxygen and water can be divided
It is not higher than 10% the most independently.Thus, it is possible to significantly improve the gasification efficiency of reducing agent, thus improve high-phosphorus iron ore further
Reduction effect.
According to another specific embodiment of the present utility model, the particular type of reducing gases is not particularly restricted, ability
Field technique personnel can select according to actual needs, and such as, reducing gases can be selected from blast furnace gas, coal gas of converter and electricity
At least one in producer gas.
According to another embodiment of the present utility model, offgas outlet arranges 304 in the top of gasification revolving bed 300 and position
In the top of high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire 31, and the tail gas produced during being suitable to discharge high ferrophosphorus iron ore reduction.
According to another embodiment of the present utility model, after reduction, that high-phosphorus iron ore broken material is carried out reduction treatment is permissible for gas
It is to carry out under temperature is 1000～1300 degrees Celsius 20～50 minutes.Thus, it is possible to significantly improve the reduction effect of high-phosphorus iron ore
Really.It should be noted that the time that high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire rotates a circle is the recovery time.
It should be noted that high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire 31 is identical with the direction of rotation of reducing agent stone or metal plate for standing a stove on as a precaution against fire 32, and reducing agent stone or metal plate for standing a stove on as a precaution against fire
The rotating speed of rotating speed high-phosphorus iron ore the to be less than stone or metal plate for standing a stove on as a precaution against fire 31 of 32.Thus, it is possible to ensure that reducing agent fully gasifies, thus improve reducing agent
Utilization rate.
According to another embodiment of the present utility model, granulating unit 400 has solid reduction product entrance 401 and shrend
Rear reduzate outlet 402, solid reduction product entrance 401 is connected with solid reduction product outlet 305, and is suitable to revolve gasification
The solid reduction product obtained in rotated bed carries out Water Quenching, such that it is able to reduzate after obtaining shrend.
According to another embodiment of the present utility model, mill ore magnetic selection device 500 has reduzate entrance after shrend
501, iron powder outlet 502 and mine tailing outlet 503, after shrend, after reduzate entrance 501 and shrend, reduzate exports 402 phases
Connect, and be suitable to reduzate after above-mentioned obtained shrend is carried out mill ore magnetic selection process, such that it is able to obtain iron powder and mine tailing.
According to specific embodiment of the utility model, during mill ore magnetic selection processes, magnetic separation strength is not particularly restricted, ability
Field technique personnel can select according to actual needs, according to concrete example of the present utility model, magnetic in mill ore magnetic selection process
Selecting intensity can be 800～1500Oe.Thus, it is possible to significantly improve the separation efficiency of iron powder and mine tailing, thus improve gained ferrum
The grade of powder.
The system processing high-phosphorus iron ore according to this utility model embodiment is by being respectively provided with height in gasification revolving bed
Fosfosiderite stone or metal plate for standing a stove on as a precaution against fire and reducing agent stone or metal plate for standing a stove on as a precaution against fire, and high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire is positioned at the top of reducing agent stone or metal plate for standing a stove on as a precaution against fire, i.e. high-phosphorus iron ore and reduction
Agent is not directly contacted with so that the reducing agent arranged on reducing agent stone or metal plate for standing a stove on as a precaution against fire generating gasification reaction under the effect of reducing gases is contained
Gas after the reduction of carbon monoxide and hydrogen, after this reduction, gas contacts with the high-phosphorus iron ore broken material on high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire and carries out also
Former reaction, such that it is able to significantly improve reduction effect, simultaneously more existing employing reducing agent mixes with high-phosphorus iron ore and reduces
Mode compare, the reducing agent in the application is not directly contacted with high-phosphorus iron ore, so that the impurity in reducing agent is the most harmful
Element such as S, P etc. will not enter in the material after reduction, and then i.e. can get low-phosphorous Gao Pin through follow-up shrend and mill ore magnetic selection
The iron powder of position.
Understand for convenience, below the system utilizing this utility model embodiment to process high-phosphorus iron ore is processed high ferrophosphorus
The method in ore deposit is described.According to embodiment of the present utility model, the method is to use the above-mentioned system processing high-phosphorus iron ore
Carry out.According to specific embodiment of the utility model, the method includes: (1) is by high-phosphorus iron ore supply extremely described high-phosphorus iron ore
Breaker carries out break process, in order to obtain high-phosphorus iron ore broken material；(2) reducing agent supply is crushed to described reducing agent
Device carries out break process, in order to obtain reducing agent broken material；(3) described high-phosphorus iron ore broken material is laid on described gasification
On described high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire in revolving bed, described reducing agent broken material is laid in described gasification revolving bed described in also
On former dose of stone or metal plate for standing a stove on as a precaution against fire, in order to use reducing gases described reducing agent to be carried out reduction treatment, after gas after being reduced, and described reduction
Gas carries out reduction treatment to described high-phosphorus iron ore broken material, obtains solid reduction product and tail gas；(4) described solid reduction is produced
Thing supply carries out Water Quenching to described granulating unit, in order to obtain reduzate after shrend；(5) will reduce after described shrend
Product supply carries out mill ore magnetic selection process to described mill ore magnetic selection device, in order to obtain iron powder and mine tailing.Inventor finds, logical
Cross and use the gasification revolving bed being provided with high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire and reducing agent stone or metal plate for standing a stove on as a precaution against fire, and high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire is positioned at reducing agent stove
The top of dish, i.e. high-phosphorus iron ore are not directly contacted with reducing agent so that the reducing agent arranged on reducing agent stone or metal plate for standing a stove on as a precaution against fire is in reducing gases
Effect lower generating gasification reaction obtains gas after the reduction containing carbon monoxide and hydrogen, after this reduction gas with on high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire
The contact of high-phosphorus iron ore broken material carry out reduction reaction, such that it is able to significantly improve reduction effect, simultaneously more existing employing is also
Former dose compared with the high-phosphorus iron ore mixing mode that carries out reducing, the reducing agent in the application is not directly contacted with high-phosphorus iron ore, from
And in the material after making the impurity in reducing agent i.e. harmful element such as S, P etc. will not enter into reduction, and then through follow-up shrend
Low-phosphorous high-grade iron powder is i.e. can get with mill ore magnetic selection.It should be noted that it is above-mentioned for the system institute processing high-phosphorus iron ore
The method that the feature and advantage described are equally applicable to this process high-phosphorus iron ore, here is omitted.
Below with reference to Fig. 5, the system using this utility model embodiment to process high-phosphorus iron ore is processed the side of high-phosphorus iron ore
Method is described in detail.According to embodiment of the present utility model, the method includes:
S100: high-phosphorus iron ore supply is carried out break process to high-phosphorus iron ore breaker
According to embodiment of the present utility model, high-phosphorus iron ore supply to high-phosphorus iron ore breaker will carry out broken place
Reason, such that it is able to obtain high-phosphorus iron ore broken material.Thus, it is possible to during significantly improving sequential reduction with the contacting of gas after reduction
Area, thus improve the reduction effect of high-phosphorus iron ore.
According to an embodiment of the present utility model, the particle diameter of high-phosphorus iron ore broken material is not particularly restricted, this area
Technical staff can select according to actual needs, according to specific embodiment of the utility model, high-phosphorus iron ore broken material grain
Footpath can be not higher than 15mm, and the particle diameter of this high-phosphorus iron ore broken material should be greater than the straight of the first through hole on high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire
Footpath.Thus, it is possible to improve the reduction effect of high-phosphorus iron ore further.
According to further embodiment of the present utility model, the water content in high-phosphorus iron ore broken material is not particularly restricted,
Those skilled in the art can select according to actual needs, and according to specific embodiment of the utility model, high-phosphorus iron ore breaks
Moisture in particle can be not higher than 1wt%.Thus, it is possible to improve the reduction effect of high-phosphorus iron ore further.
S200: reducing agent supply is carried out break process to reducing agent breaker
According to embodiment of the present utility model, reducing agent supply is carried out break process to reducing agent breaker, from
And reducing agent broken material can be obtained.Thus, it is possible to significantly improve the contact area of itself and reducing gases, thus improve reducing agent
Gasification efficiency.
According to an embodiment of the present utility model, the particle diameter of reducing agent broken material is not particularly restricted, this area skill
Art personnel can select according to actual needs, according to specific embodiment of the utility model, the particle diameter of reducing agent broken material
30mm can be not higher than, and the particle diameter of this reducing agent broken material should be greater than the diameter of the second through hole on reducing agent stone or metal plate for standing a stove on as a precaution against fire.By
This, can significantly improve the gasification efficiency of reducing agent, and then improve the reduction effect of high-phosphorus iron ore further.
According to further embodiment of the present utility model, the water content in reducing agent broken material is not particularly restricted, this
Skilled person can select according to actual needs, according to specific embodiment of the utility model, reducing agent broken material
In moisture can be not higher than 1wt%.Thus, it is possible to improve the reduction effect of high-phosphorus iron ore further.
According to another embodiment of the present utility model, the particular type of reducing agent is not particularly restricted, this area skill
Art personnel can select according to actual needs, and according to specific embodiment of the utility model, reducing agent can be selected from non-
At least one in coking coal and semi-coke.Thus, it is possible to improve the reduction effect of high-phosphorus iron ore further.
According to another embodiment of the present utility model, in reducing agent, fixed carbon content is not particularly restricted, this area
Technical staff can select according to actual needs, and according to specific embodiment of the utility model, in reducing agent, fixed carbon contains
Amount can be not less than 50%.Thus, it is possible to significantly improve the gasification efficiency of reducing agent, and then improve going back of high-phosphorus iron ore further
Former effect.
S300: high-phosphorus iron ore broken material is laid on the described high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire in gasification revolving bed, by reducing agent
Broken material is laid on the reducing agent stone or metal plate for standing a stove on as a precaution against fire in gasification revolving bed
According to embodiment of the present utility model, high-phosphorus iron ore broken material is laid on the described high ferrophosphorus in gasification revolving bed
On the stone or metal plate for standing a stove on as a precaution against fire of ore deposit, reducing agent broken material is laid on the reducing agent stone or metal plate for standing a stove on as a precaution against fire in gasification revolving bed, in order to use reducing gases to reduction
Agent carries out reduction treatment, and after obtaining gas after the reduction containing carbon monoxide and hydrogen, and reduction, gas is to high-phosphorus iron ore broken material
Carry out reduction treatment, obtain solid reduction product and tail gas.
According to a specific embodiment of the present utility model, the high-phosphorus iron ore thickness of feed layer being laid on high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire
Being not particularly restricted, those skilled in the art can select according to actual needs, specifically shows according to of the present utility model
Example, the high-phosphorus iron ore thickness of feed layer being laid on high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire can be 25～40mm.Inventor finds, if high-phosphorus iron ore
The blocked up meeting of the bed of material has a strong impact on its breathability, thus the contact area of gas after reducing high-phosphorus iron ore and reduction, and then reduce high phosphorus
The reduction effect of iron mine.
According to another specific embodiment of the present utility model, the reducing agent thickness of feed layer being laid on reducing agent stone or metal plate for standing a stove on as a precaution against fire is also
Being not particularly limited, those skilled in the art can select according to actual needs, according to concrete example of the present utility model,
The reducing agent thickness of feed layer being laid on reducing agent stone or metal plate for standing a stove on as a precaution against fire can be 50～120mm.Inventor finds, if reducing agent thickness of feed layer
Blocked up meeting has a strong impact on breathability, thus has a strong impact on the gasification efficiency of reducing agent, and then reduces the utilization rate of reducing agent.
Inventor finds, by being respectively provided with high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire and reducing agent stone or metal plate for standing a stove on as a precaution against fire in gasification revolving bed and high
Fosfosiderite stone or metal plate for standing a stove on as a precaution against fire is positioned at the top of reducing agent stone or metal plate for standing a stove on as a precaution against fire, i.e. high-phosphorus iron ore and is not directly contacted with reducing agent so that on reducing agent stone or metal plate for standing a stove on as a precaution against fire
The reducing agent arranged generating gasification reaction under the effect of reducing gases obtains gas after the reduction containing carbon monoxide and hydrogen, should be also
Former rear gas contacts with the high-phosphorus iron ore broken material on high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire and carries out reduction reaction, such that it is able to significantly improve reduction effect
Really, simultaneously more existing employing reducing agent carries out compared with the mode reduced with high-phosphorus iron ore mixing, the reducing agent in the application with
High-phosphorus iron ore is not directly contacted with, so that after the impurity in reducing agent i.e. harmful element such as S, P etc. will not enter into reduction
In material, and then i.e. can get low-phosphorous high-grade iron powder through subsequent processes.
According to another specific embodiment of the present utility model, in reducing gases, the content of oxygen and water is limited the most especially
System, those skilled in the art can select according to actual needs, and such as, in reducing gases, the volume fraction of oxygen and water is permissible
Separately it is not higher than 10%.Thus, it is possible to significantly improve the gasification efficiency of reducing agent, thus improve high-phosphorus iron ore further
Reduction effect.
According to another specific embodiment of the present utility model, the particular type of reducing gases is not particularly restricted, ability
Field technique personnel can select according to actual needs, and such as, reducing gases can be selected from blast furnace gas, coal gas of converter and electricity
At least one in producer gas.
According to another embodiment of the present utility model, after reduction, that high-phosphorus iron ore broken material is carried out reduction treatment is permissible for gas
It is to carry out under temperature is 1000～1300 degrees Celsius 20～50 minutes.Thus, it is possible to significantly improve the reduction effect of high-phosphorus iron ore
Really.It should be noted that the time that high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire rotates a circle is the recovery time.
S400: solid reduction product supply is carried out Water Quenching to granulating unit
According to embodiment of the present utility model, solid reduction product obtained above supply is carried out water to granulating unit
Quench process, such that it is able to reduzate after obtaining shrend.
S500: reduzate supply after shrend is carried out mill ore magnetic selection process to mill ore magnetic selection device
According to embodiment of the present utility model, by reduzate supply after shrend obtained above to mill ore magnetic selection device
Carry out mill ore magnetic selection process, such that it is able to obtain iron powder and mine tailing.According to specific embodiment of the utility model, at mill ore magnetic selection
In reason, magnetic separation strength is not particularly restricted, and those skilled in the art can select according to actual needs, according to this practicality
Novel concrete example, during mill ore magnetic selection processes, magnetic separation strength can be 800～1500Oe.Thus, it is possible to significantly improve iron powder
With the separation efficiency of mine tailing, thus improve the grade of gained iron powder.
The system processing high-phosphorus iron ore using this utility model embodiment is processed the method for high-phosphorus iron ore and is set by employing
It is equipped with the gasification revolving bed of high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire and reducing agent stone or metal plate for standing a stove on as a precaution against fire, and high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire is positioned at the upper of reducing agent stone or metal plate for standing a stove on as a precaution against fire
Side, i.e. high-phosphorus iron ore is not directly contacted with reducing agent so that the reducing agent arranged on reducing agent stone or metal plate for standing a stove on as a precaution against fire is under the effect of reducing gases
Generating gasification reaction obtains gas after the reduction containing carbon monoxide and hydrogen, gas and the high phosphorus on high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire after this reduction
The contact of iron mine broken material carries out reduction reaction, such that it is able to significantly improve reduction effect, simultaneously more existing employing reducing agent with
The mode that high-phosphorus iron ore mixing carries out reducing is compared, and the reducing agent in the application is not directly contacted with high-phosphorus iron ore, so that
Impurity in reducing agent i.e. harmful element such as S, P etc. will not enter in the material after reduction, and then through follow-up shrend and ore grinding
Magnetic separation i.e. can get low-phosphorous high-grade iron powder.
Below with reference to specific embodiment, this utility model is described, it should be noted that these embodiments are only
Illustrative, and limit this utility model never in any form.
Embodiment 1
High-phosphorus iron ore composition (mass percent): Fe:46.32%, P:0.92%, obtains height by broken for high-phosphorus iron ore drying
Fosfosiderite broken material (particle diameter is 7mm), obtains mill coal broken material (particle diameter is 15mm), then by institute by mill coal break process
The high-phosphorus iron ore broken material obtained is layed on the high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire in gasification revolving bed, and mill coal broken material is layed in gas
Changing on the reducing agent stone or metal plate for standing a stove on as a precaution against fire in revolving bed, wherein, high-phosphorus iron ore layer thickness is 30mm, and mill coal layer thickness is 85mm, 1200
DEG C be passed through electric furnace gas reduction 50min, after reduction obtained by solid reduction product carry out shrend after carry out mill ore magnetic selection, ore grinding
After reduzate particle diameter be 0.043-0.075mm, magnetic separation strength 1200Oe, it is thus achieved that the iron powder of TFe 92.3%, P 0.09%.
Embodiment 2
High-phosphorus iron ore composition (mass percent): Fe:42.68%.P:0.76%, obtains height by broken for high-phosphorus iron ore drying
Fosfosiderite broken material (particle diameter is 6mm), obtains semi-coke broken material (particle diameter is 18mm), then by obtained by semi-coke break process
High-phosphorus iron ore broken material be layed in gasification revolving bed in high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire on, semi-coke broken material is layed in gasification rotate
On reducing agent stone or metal plate for standing a stove on as a precaution against fire in Chuan, wherein, high-phosphorus iron ore layer thickness is 25mm, and semi-coke layer thickness is 90mm, is passed through at 1250 DEG C and turns
Producer gas gas reduction 60min, solid reduction product obtained after reduction carries out mill ore magnetic selection, after ore grinding after carrying out shrend
Reduzate particle diameter is 0.043-0.075mm, magnetic separation strength 1000Oe, it is thus achieved that the iron powder of TFe 94.5%, P 0.07%.
Embodiment 3
High-phosphorus iron ore composition (mass percent): Fe:48.53%.P:1.06%, obtains height by broken for high-phosphorus iron ore drying
Fosfosiderite broken material (particle diameter is 5mm), obtains mill coal broken material (particle diameter is 14mm), then by institute by mill coal break process
The high-phosphorus iron ore broken material obtained is layed on the high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire in gasification revolving bed, and mill coal broken material is layed in gas
Changing on the reducing agent stone or metal plate for standing a stove on as a precaution against fire in revolving bed, wherein, high-phosphorus iron ore layer thickness is 25mm, and mill coal layer thickness is 100mm, 1280
DEG C be passed through blast furnace gas reduction 55min, after reduction obtained by solid reduction product carry out shrend after carry out mill ore magnetic selection, ore grinding
After reduzate particle diameter be 0.043-0.075mm, magnetic separation strength 1400Oe, it is thus achieved that the iron powder of TFe 91.9%, P 0.09%.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment of the present utility model or example.In this manual, the schematic table to above-mentioned term
State and be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature are permissible
One or more embodiment in office or example combine in an appropriate manner.Additionally, in the case of the most conflicting, this area
Technical staff the feature of the different embodiments described in this specification or example and different embodiment or example can be entered
Row combines and combination.
Although above it has been shown and described that embodiment of the present utility model, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as that those of ordinary skill in the art is in scope of the present utility model to restriction of the present utility model
In above-described embodiment can be changed, revise, replace and modification.
Claims (3)
1. process a system for high-phosphorus iron ore, be characterised by, including:
High-phosphorus iron ore breaker, described high-phosphorus iron ore breaker has high-phosphorus iron ore entrance and high-phosphorus iron ore broken material goes out
Mouthful；
Reducing agent breaker, described reducing agent breaker has reducing agent entrance and the outlet of reducing agent broken material；
Gasification revolving bed, described gasification revolving bed includes:
High-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire, described high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire is spindle rotationally arranged in inside described gasification revolving bed, and along institute
State the rotation direction of high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire, described high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire is disposed with high-phosphorus iron ore feed zone, high-phosphorus iron ore
Reducing zone and solid reduction product discharge zone, be provided with high ferrophosphorus on the gasification revolving bed sidewall of described high-phosphorus iron ore feed zone
Ore deposit broken material entrance, described high-phosphorus iron ore broken material entrance is connected, at described solid also with the outlet of described high-phosphorus iron ore broken material
Originate in and solid reduction product outlet is set on the gasification revolving bed sidewall of thing discharge zone, described high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire is provided with
First through hole；
Reducing agent stone or metal plate for standing a stove on as a precaution against fire, described reducing agent stone or metal plate for standing a stove on as a precaution against fire is spindle rotationally arranged in described gasification revolving bed inside and is positioned at described high ferrophosphorus
The lower section of ore deposit stone or metal plate for standing a stove on as a precaution against fire, and along the rotation direction of described reducing agent stone or metal plate for standing a stove on as a precaution against fire, described reducing agent stone or metal plate for standing a stove on as a precaution against fire is disposed with reduction
Slag discharge zone after agent feed zone, reducing agent reducing zone and reduction, sets on the gasification revolving bed sidewall of described reducing agent feed zone
Being equipped with reducing agent broken material entrance, described reducing agent broken material entrance is connected with the outlet of described reducing agent broken material, goes back described
Slag outlet after reduction is set on the gasification revolving bed sidewall of former rear slag discharge zone, described reducing agent stone or metal plate for standing a stove on as a precaution against fire is provided with second and leads to
Hole；
Multiple radiation heating tubes, the plurality of radiation heating tube is arranged on the inwall of described gasification revolving bed；
Reducing gases entrance, described reducing gases entrance is arranged on the bottom of described gasification revolving bed and is positioned at described reducing agent stone or metal plate for standing a stove on as a precaution against fire
Lower section；
Offgas outlet, described offgas outlet is arranged on the top of described gasification revolving bed and is positioned at the upper of described high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire
Side；
Granulating unit, described granulating unit has reduzate outlet after solid reduction product entrance and shrend, and described solid is also
Former product inlet is connected with the outlet of described solid reduction product；
Mill ore magnetic selection device, described mill ore magnetic selection device has reduzate entrance after shrend, iron powder outlet and mine tailing outlet, institute
After stating shrend, reduzate entrance is connected with reduzate outlet after described shrend.
System the most according to claim 1, it is characterised in that it of described high-phosphorus iron ore stone or metal plate for standing a stove on as a precaution against fire and described reducing agent stone or metal plate for standing a stove on as a precaution against fire
Between vertical dimension be 300～1000mm.
System the most according to claim 1 and 2, it is characterised in that the diameter of described first through hole and the second through hole is respectively
Independently be 2～8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620629877.1U CN205710796U (en) | 2016-06-23 | 2016-06-23 | Process the system of high-phosphorus iron ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620629877.1U CN205710796U (en) | 2016-06-23 | 2016-06-23 | Process the system of high-phosphorus iron ore |
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| Publication Number | Publication Date |
|---|---|
| CN205710796U true CN205710796U (en) | 2016-11-23 |
Family
ID=57315647
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620629877.1U Withdrawn - After Issue CN205710796U (en) | 2016-06-23 | 2016-06-23 | Process the system of high-phosphorus iron ore |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105936951A (en) * | 2016-06-23 | 2016-09-14 | 江苏省冶金设计院有限公司 | System and method for processing high-phosphorus iron ore |
-
2016
- 2016-06-23 CN CN201620629877.1U patent/CN205710796U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105936951A (en) * | 2016-06-23 | 2016-09-14 | 江苏省冶金设计院有限公司 | System and method for processing high-phosphorus iron ore |
| CN105936951B (en) * | 2016-06-23 | 2018-07-13 | 江苏省冶金设计院有限公司 | The system and method for handling high-phosphorus iron ore |
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