CN106180734A - Prepare the method and system of iron powder - Google Patents
Prepare the method and system of iron powder Download PDFInfo
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- CN106180734A CN106180734A CN201610619368.5A CN201610619368A CN106180734A CN 106180734 A CN106180734 A CN 106180734A CN 201610619368 A CN201610619368 A CN 201610619368A CN 106180734 A CN106180734 A CN 106180734A
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- ore grinding
- ore
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- iron
- iron powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
Abstract
The invention discloses the method and system preparing iron powder.The method preparing iron powder includes: metallized pellet is carried out break process, in order to obtain pelletizing granule；Pelletizing granule is carried out the first ore grinding process, in order to obtain the first ore grinding powder；First ore grinding powder is carried out the first magnetic separation process, in order to obtain the first slag and the first iron powder；First iron powder is carried out the second ore grinding process, in order to obtain the second ore grinding powder；And the second ore grinding powder is carried out the second magnetic separation process, in order to obtaining the second slag and the second iron powder, wherein, add Calx in the first ore grinding processes and/or the second ore grinding processes, the addition of Calx is (3 5) % of the quality stating metallized pellet.The method adds Calx in grinding process, and Calx, by regulating the flowable of ore particle, reduces pulp viscosity, promotes granule dispersion, thus improves the flowable of ore pulp, stops intergranular reunion, and then improve grinding effect, ore grinding energy consumption is greatly reduced.
Description
Technical field
The present invention relates to prepare the method for iron powder, and prepare the system of iron powder.
Background technology
China's iron ore deposit has " lean ", " carefully ", a main feature of " miscellaneous ", and average Iron grade 32% is average ferrum than the world
Grade is low 11 percentage points.Iron ore is as the primary raw material of steel industry, it usually needs could enter after beneficiation enrichment
Blast furnace process.Along with the fast development of steel and iron industry, some easily select iron mine and the higher rich ore of Iron grade constantly to consume.The most such as
What effective exploitation utilizes some Low-grade and hard-to-separate iron ore such as bauxite, high-phosphor oolitic hematite etc. and some industrial solid castoffs
As the iron-containing resources such as Bayer process red mud, copper ashes, nickel slag, lead and zinc smelting dreg become main research direction.
Through retrieving existing document and patent, process these iron content by tunnel cave, rotary kiln, shaft furnace or rotary hearth furnace
Resource produces metallized pellet, and then the technique that mill ore magnetic selection produces metal iron powder.But scene is when carrying out mill ore magnetic selection and producing,
Use multistage grinding magnetic separation.And grinding operation is the operation that an energy consumption is the highest, particularly carry out fine grinding and Ultrafine Grinding when needs
Time, energy consumption is higher.Statistical result shows, the electric energy of whole world ore grinding consumption accounts for the 5% of the total amount that generates electricity then；In investment,
Grinding operation accounts for about the 60% of whole ore dressing plant investment, and power consumption accounts for the 30%～70% of full factory investment, production and operation expense
The 40%～50% of Ye Zhanquan factory investment；Technically, the subject matter that grinding operation exists is exactly that energy consumption is high, and efficiency is low.
Therefore, improve milling method, reduce ore grinding energy consumption significant.
Summary of the invention
It is contemplated that at least solve one of technical problem present in prior art.To this end, one object of the present invention
It is to propose a kind of method preparing iron powder, after metallized pellet is crushed by the method, grinding process adds Calx, simplifies
Mill selects flow process, obtains high-grade metal iron powder.The chemical composition stability of this metal iron powder, phosphorus content is low, and relict element is with harmful
Impurity content is few, steel scrap also can be replaced former as steel-making as the raw material of smelting or foundry iron it can also be used to powder metallurgy
Material.
According to an aspect of the present invention, the invention provides a kind of method preparing iron powder.Enforcement according to the present invention
Example, the method includes: metallized pellet is carried out break process, in order to obtain pelletizing granule；Described pelletizing granule is carried out
One ore grinding processes, in order to obtain the first ore grinding powder；Described first ore grinding powder is carried out the first magnetic separation process, in order to obtain
One slag and the first iron powder；Described first iron powder is carried out the second ore grinding process, in order to obtain the second ore grinding powder；And by institute
State the second ore grinding powder and carry out the second magnetic separation process, in order to obtain the second slag and the second iron powder, wherein, at described first ore grinding
Processing and/or add Calx in the process of the second ore grinding, the addition of described Calx is the (3-of the quality of described metallized pellet
5) %.
The method preparing iron powder according to embodiments of the present invention, adds Calx in grinding process, and Calx is by regulation ore deposit
The flowable of grain, reduces pulp viscosity, promotes granule dispersion, thus improves the flowable of ore pulp, stops intergranular group
Poly-, and then improve grinding effect, ore grinding energy consumption is greatly reduced.Additionally, the method is effectively improved Iron grade and the ferrum of metal iron powder
The response rate, and, the chemical composition stability of the metal iron powder that the method obtains, phosphorus content is low, and relict element contains with objectionable impurities
Amount is few, steel scrap also can be replaced as steelmaking feed as the raw material of smelting or foundry iron it can also be used to powder metallurgy.
It addition, the method preparing iron powder according to the above embodiment of the present invention, it is also possible to there is following additional technology special
Levy:
According to embodiments of the invention, described metallized pellet full weight of iron mark is 25%～60%, metallic iron quality
Mark is 20%～57%, and degree of metalization is 80%～95%.
According to embodiments of the invention, the method farther includes: iron-stone is carried out reduction roasting process, in order to
To metallized pellet, wherein, described iron-stone is selected from bauxite, high-phosphor oolitic hematite, red mud, copper ashes, nickel slag and lead
At least one of zinc smelting dreg.
According to embodiments of the invention, the particle diameter of described pelletizing granule is not more than 2 millimeters.
According to embodiments of the invention, in described first ore grinding powder, particle diameter is not more than described first ore grinding of 0.074mm
Powder accounts for (60-65) % of gross mass.
According to embodiments of the invention, in described second ore grinding powder, particle diameter is not more than described first ore grinding of 0.074mm
Powder accounts for (70-75) quality % of gross mass.
According to a further aspect in the invention, the invention provides a kind of system implementing the aforementioned method preparing ferrum.According to
Embodiments of the invention, this system includes: disintegrating machine, and described disintegrating machine includes metallized pellet entrance and pelletizing particle outlet；
First ore mill, described first ore mill has pelletizing particle entrance, the first lime inlet and the first ore grinding dust outlet, described
Pelletizing particle entrance is connected with described pelletizing particle outlet；First magnetic separator, described first magnetic separator has the first ore grinding powder
Entrance, the first slag outlet and the outlet of the first iron powder, described first ore grinding powdering inlet and described first ore grinding dust outlet phase
Even；Second ore mill, described second ore mill has the first iron powder entrance, the second lime inlet and the second ore grinding dust outlet,
Described first iron powder entrance is connected with described first iron powder outlet；And second magnetic separator, described second magnetic separator has second
Ore grinding powdering inlet, the second slag outlet and the outlet of the second iron powder, described second ore grinding powdering inlet and described second ore grinding powder
End outlet is connected.
The system preparing iron powder according to embodiments of the present invention, the first ore mill and the second ore mill are respectively provided with the first stone
Ash entrance and the second lime inlet, thus, grinding process adds Calx, Calx, by regulating the flowable of ore particle, drops
Low pulp viscosity, promotes granule dispersion, thus improves the flowable of ore pulp, stop intergranular reunion, and then improve grinding
Effect, is greatly reduced ore grinding energy consumption.Additionally, utilize the Iron grade being effectively improved metal iron powder that this system prepares and ferrum to return
Yield significantly improves, and, the chemical composition stability of the metal iron powder that this system obtains, phosphorus content is low, and relict element is with harmful
Impurity content is few, steel scrap also can be replaced former as steel-making as the raw material of smelting or foundry iron it can also be used to powder metallurgy
Material.
It addition, the system preparing iron powder according to the above embodiment of the present invention, it is also possible to there is following additional technology special
Levy:
According to embodiments of the invention, this system farther includes: reduction roasting device, and described reduction roasting device has
Iron-stone entrance and metallized pellet outlet, the outlet of described metallized pellet is connected with described metallized pellet entrance.
According to embodiments of the invention, described reduction roasting device is selected from tunnel cave, rotary kiln, shaft furnace and rotary hearth furnace
At least one.
According to embodiments of the invention, described first ore mill and described second ore mill are rod mill or ball mill, institute
State the first magnetic separator and described second magnetic separator is magnetic separator or magnetic separation tube.
The additional aspect of the present invention and advantage will part be given in the following description, and part will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from combining the accompanying drawings below description to embodiment and will become
Substantially with easy to understand, wherein:
Fig. 1 shows the schematic flow sheet of the method preparing ferrum according to an embodiment of the invention；
Fig. 2 shows the schematic flow sheet of the method preparing ferrum according to another embodiment of the present invention；
Fig. 3 shows the structural representation of the system preparing ferrum according to an embodiment of the invention；
Fig. 4 shows the structural representation of the system preparing ferrum according to another embodiment of the present invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, term " longitudinally ", " laterally ", " on ", D score, "front", "rear", "left", "right", " perpendicular
Directly ", " level ", " top ", the orientation of the instruction such as " end " or position relationship be based on orientation shown in the drawings or position relationship, be only
For the ease of describing the present invention rather than requiring that the present invention must be with specific azimuth configuration and operation, therefore it is not intended that right
The restriction of the present invention.
It should be noted that term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint phase
To importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", " second " feature permissible
Express or implicitly include one or more this feature.Further, in describing the invention, unless otherwise saying
Bright, " multiple " are meant that two or more.
According to an aspect of the present invention, the invention provides a kind of method preparing iron powder.With reference to Fig. 1, according to this
Bright embodiment, explains this method, and the method includes:
S100 break process
According to embodiments of the invention, metallized pellet is carried out break process, obtain pelletizing granule.Thus, pelletizing
Little, the follow-up mill ore magnetic selection of particle diameter of grain, it is simple to the ferrum being sufficiently separated in metallized pellet, and, ferrum of high grade.
Wherein it is desired to explanation, the kind of metallized pellet is not particularly limited, as long as the metal containing fe
Pellet.
According to embodiments of the invention, metallized pellet full weight of iron mark is 25%～60%, metallic iron mass fraction
Being 20%～57%, degree of metalization is 80%～95%.Thus, the iron-holder of metallized pellet is high, and impurity is few, the productivity of iron powder
With of high grade.
According to embodiments of the invention, the particle diameter of pelletizing granule is not more than 2 millimeters.Thus, the particle diameter of pelletizing granule is little, just
Ferrum in mill ore magnetic selection is sufficiently separated metallized pellet, and, the grade of the ferrum of isolated is higher.
S200 the first ore grinding processes
According to embodiments of the invention, pelletizing granule is carried out the first ore grinding process, it is thus achieved that the first ore grinding powder.Thus,
Ore grinding powder is obtained, it is simple to follow-up carry out magnetic separation process by ore grinding.
According to embodiments of the invention, in the first ore grinding powder, the first ore grinding powder of particle diameter no more than 0.074mm accounts for always
(60-65) % of quality.Thus, the particle diameter of the first ore grinding powder is less, it is simple to follow-up magnetic separation processes and fully carries out slag sluicing system.
S300 the first magnetic separation processes
According to embodiments of the invention, the first ore grinding powder is carried out the first magnetic separation process, obtains the first slag and first
Iron powder.Thus, processed by the first magnetic separation, the first ore grinding powder is carried out preliminary slag sluicing system.
S400 the second ore grinding processes
According to embodiments of the invention, the first iron powder is carried out the second ore grinding process, it is thus achieved that the second ore grinding powder.Thus,
First iron powder being carried out further ore grinding, makes slag ferrum fully dissociate, the purity making iron powder is higher.
According to embodiments of the invention, in the second ore grinding powder, the first ore grinding powder of particle diameter no more than 0.074mm accounts for always
(70-75) quality % of quality.Thus, the particle diameter of the first ore grinding powder is less, it is simple to follow-up further magnetic separation processes fully to enter
Row slag sluicing system, the Iron grade of metal iron powder and iron recovery are high, and, the chemical composition stability of iron powder, phosphorus content is low, residual
Element is few with objectionable impurities content, also can replace steel scrap as the raw material of smelting or foundry iron it can also be used to powder metallurgy
As steelmaking feed.
S500 the second magnetic separation processes
According to embodiments of the invention, the second ore grinding powder is carried out the second magnetic separation process, obtains the second slag and second
Iron powder.Thus, processed by the second magnetic separation, the slag ferrum that the second ore grinding powder is carried out again fully from, the Iron grade of iron powder and
Iron recovery is high, and according to some embodiments of the present invention, the Iron grade of iron powder is more than 95%, and iron recovery is about 90%.
And the chemical composition stability of metal iron powder, phosphorus content is low, and relict element is few with objectionable impurities content.
According to embodiments of the invention, in the first ore grinding processes and/or the second ore grinding processes, add Calx, this Calx
Addition is (3-5) % of the quality of metallized pellet.Inventor finds, when lime consumption is less than 3%, improves effect and fails to understand
Aobvious；When lime consumption is more than 5%, pulp viscosity becomes larger, poor fluidity, causes grinding efficiency to be deteriorated；Work as lime consumption
During for (3-5) %, Calx, by regulating the flowable of ore particle, reduces pulp viscosity, promotes granule dispersion, thus improves ore pulp
Flowable, stop intergranular reunion, and then improve grinding effect, the granularity requirements of ore grinding is reduced, mill is greatly reduced
Ore deposit energy consumption.
With reference to Fig. 2, according to embodiments of the invention, the method farther includes:
S600 reduction roasting processes
According to embodiments of the invention, iron-stone is carried out reduction roasting process, obtains metallized pellet, wherein, contain
Iron ore is selected from least one of bauxite, high-phosphor oolitic hematite, red mud, copper ashes, nickel slag and lead and zinc smelting dreg.Thus,
Multiple ore, is processed by reduction roasting and all can obtain metallized pellet, applied widely.
According to a further aspect in the invention, the invention provides a kind of system implementing the aforementioned method preparing ferrum.Reference
Fig. 3, according to embodiments of the invention, explains this system, and this system includes: disintegrating machine the 100, first ore mill
200, the first magnetic separator the 300, second ore mill 400 and the second magnetic separator 500.Below each device of this system is specifically solved
Release explanation:
Disintegrating machine 100: according to embodiments of the invention, disintegrating machine 100 includes metallized pellet entrance 101 and pelletizing granule
Outlet 102.Thus, the pelletizing granule that particle diameter is little, follow-up mill ore magnetic selection, it is simple to be sufficiently separated are obtained by disintegrating machine
Ferrum in metallized pellet, and, ferrum of high grade.
According to embodiments of the invention, metallized pellet full weight of iron mark is 25%～60%, metallic iron mass fraction
Being 20%～57%, degree of metalization is 80%～95%.Thus, the iron-holder of metallized pellet is high, and impurity is few, the productivity of iron powder
With of high grade.
According to embodiments of the invention, the particle diameter of pelletizing granule is not more than 2 millimeters.Thus, the particle diameter of pelletizing granule is little, just
Ferrum in mill ore magnetic selection is sufficiently separated metallized pellet, and, the grade of the ferrum of isolated is higher.
First ore mill 200: according to embodiments of the invention, the first ore mill 200 have pelletizing particle entrance 201,
One lime inlet 202 and the first ore grinding dust outlet 203, wherein, pelletizing particle entrance 201 is connected with pelletizing particle outlet 102.
Thus, the first ore grinding process is carried out by the first ore mill, it is thus achieved that ore grinding powder, it is simple to follow-up carry out magnetic separation process.
According to embodiments of the invention, in the first ore grinding powder, the first ore grinding powder of particle diameter no more than 0.074mm accounts for always
(60-65) % of quality.Thus, the particle diameter of the first ore grinding powder is less, it is simple to follow-up magnetic separation processes and fully carries out slag sluicing system.
First magnetic separator 300: according to embodiments of the invention, the first magnetic separator 300 has the first ore grinding powdering inlet
301, the first slag outlet 302 and the first iron powder outlet 303, wherein, the first ore grinding powdering inlet 301 goes out with the first ore grinding powder
Mouth 203 is connected.Thus, carry out the first magnetic separation process by the first magnetic separator, the first ore grinding powder is carried out preliminary slag ferrum and divides
From.
Second ore mill 400: according to embodiments of the invention, the second ore mill 400 have the first iron powder entrance 401,
Two lime inlet 402 and the second ore grinding dust outlets 403, wherein, the first iron powder entrance 401 is connected with the first iron powder outlet 303.
Thus, the second ore mill carries out further ore grinding to the first iron powder, makes slag ferrum fully dissociate, and the purity making iron powder is higher.
According to embodiments of the invention, in the second ore grinding powder, the first ore grinding powder of particle diameter no more than 0.074mm accounts for always
(70-75) quality % of quality.Thus, the particle diameter of the first ore grinding powder is less, it is simple to follow-up further magnetic separation processes fully to enter
Row slag sluicing system, the Iron grade of metal iron powder and iron recovery are high, and, the chemical composition stability of iron powder, phosphorus content is low, residual
Element is few with objectionable impurities content, also can replace steel scrap as the raw material of smelting or foundry iron it can also be used to powder metallurgy
As steelmaking feed.
Second magnetic separator 500: according to embodiments of the invention, the second magnetic separator 500 has the second ore grinding powdering inlet
501, the second slag outlet 502 and the second iron powder outlet 503, wherein, the second ore grinding powdering inlet 501 goes out with the second ore grinding powder
Mouth 403 is connected.Thus, carrying out the second magnetic separation process by the second magnetic separator, the slag ferrum again carried out the second ore grinding powder divides
From, the Iron grade of iron powder and iron recovery are high, and according to some embodiments of the present invention, the Iron grade of iron powder is more than 95%, ferrum
The response rate is about 90%.And the chemical composition stability of metal iron powder, phosphorus content is low, relict element and objectionable impurities content
Few.
According to embodiments of the invention, the first ore mill 200 and the second ore mill 400 are rod mill or ball mill.Thus,
The efficiency of ore grinding is high, and slag ferrum fully dissociates, it is simple to follow-up magnetic separation.
According to embodiments of the invention, the first magnetic separator 300 and the second magnetic separator 500 are magnetic separator or magnetic separation tube.Thus,
Efficiency of magnetic separation is high, effective, and the response rate of iron powder is high.
The system preparing iron powder according to embodiments of the present invention, the first ore mill and the second ore mill are respectively provided with the first stone
Ash entrance and the second lime inlet, thus, grinding process adds Calx, Calx, by regulating the flowable of ore particle, drops
Low pulp viscosity, promotes granule dispersion, thus improves the flowable of ore pulp, stop intergranular reunion, and then improve grinding
Effect, is greatly reduced ore grinding energy consumption.Additionally, utilize the Iron grade being effectively improved metal iron powder that this system prepares and ferrum to return
Yield significantly improves, and, the chemical composition stability of the metal iron powder that this system obtains, phosphorus content is low, and relict element is with harmful
Impurity content is few, steel scrap also can be replaced former as steel-making as the raw material of smelting or foundry iron it can also be used to powder metallurgy
Material.
With reference to Fig. 4, according to embodiments of the invention, this system farther includes: reduction roasting device 600, and this reduction roasts
Burn device 600 and there is iron-stone entrance 601 and metallized pellet outlet 602, wherein, metallized pellet outlet 602 and metal
Pellet entrance 101 is connected.Thus, multiple ore, carry out reduction roasting process by reduction roasting device and all can obtain
Metallized pellet, system applied widely.
According to embodiments of the invention, described reduction roasting device is selected from tunnel cave, rotary kiln, shaft furnace and rotary hearth furnace
At least one.Thus, the time of reduction roasting is short, temperature is low, effective.
Below with reference to specific embodiment, the present invention will be described, it should be noted that these embodiments are only explanation
Property, and be not considered as limiting the invention.
Embodiment 1
Iron powder is prepared for raw material with certain copper ashes metallized pellet, wherein, consisting of of copper ashes metallized pellet: full weight of iron
Mark is 25.91%, and metallic iron mass fraction is 22.51%, and degree of metalization is 90.37%, Al2O3It is 20.11%, SiO2For
27.20%, CaO are 6.63%, and concrete grammar is as follows:
This metallized pellet being crushed to below 2mm, takes two groups of samples and carry out parallel test, one group is not added with Calx, another
Group adds the additive Calx of 3% when second segment ore grinding.Grinding attachment is four rod mills of three rollers, and magnetic plant can be magnetic
Choosing pipe.The condition of mill ore magnetic selection is: first paragraph mill 20min, mog accounts for 64.81% for-0.074mm, the magnetic field of magnetic separation
Intensity is 1800Oe；Second segment mill 20min, mog accounts for 70.73% for-0.074mm, and the magnetic field intensity of magnetic separation is
1200Oe。
Result of the test is as shown in the table, it can be seen that after adding Calx, the Iron grade of gained metal iron powder improves 6 hundred
About branch, the response rate improves about 5 percentage points.
Embodiment 2
Iron powder is prepared for raw material with certain bauxite metallized pellet, wherein, consisting of of bauxite metallized pellet: Quan Tie
Mass fraction is 28.85%, and metallic iron mass fraction is 23.99%, and degree of metalization is 83.15%, Al2O3It is 18.21%,
SiO2Being 23.70%, CaO is 10.56%, and concrete grammar is as follows:
This metallized pellet being crushed to below 2mm, takes two groups of samples and carry out parallel test, one group is not added with Calx, another
Group adds the additive Calx of 4% when second segment ore grinding.Grinding attachment is four rod mills of three rollers, and magnetic plant can be magnetic
Choosing pipe.The condition of mill ore magnetic selection is: first paragraph mill 10min, mog accounts for 60.84% for-0.074mm, the magnetic field of magnetic separation
Intensity is 3500Oe；Second segment mill 30min, mog accounts for 74.04% for-0.074mm, and the magnetic field intensity of magnetic separation is 800Oe.
Result of the test is as shown in the table, it can be seen that after adding Calx, the Iron grade of gained metal iron powder improves 6 hundred
About branch, the response rate improves about 4 percentage points.
Embodiment 3
Iron powder is prepared for raw material with certain Bayer process red mud metallized pellet, wherein, the group of Bayer process red mud metallized pellet
Become: full weight of iron mark is 35.94%, and metallic iron mass fraction is 31.77%, and degree of metalization is 88.40%, Al2O3For
22.11%, SiO2Being 25.12%, CaO is 8.47%, and concrete grammar is as follows:
This metallized pellet being crushed to below 2mm, takes two groups of samples and carry out parallel test, one group is not added with Calx, another
Group adds the additive Calx of 5% when second segment ore grinding.Grinding attachment is four rod mills of three rollers, and magnetic plant can be magnetic
Choosing pipe.The condition of mill ore magnetic selection is: first group uses secondary grinding, and first paragraph mill 15min, mog accounts for for-0.074mm
61.87%, the magnetic field intensity of magnetic separation is 3500Oe；Second segment mill 25min, mog is 72.68%, the magnetic field intensity of magnetic separation
For 800Oe.Another group uses primary grinding, a stages of magnetic separation, and first paragraph mill 15min, mog accounts for for-0.074mm
76.87%, the magnetic field intensity of magnetic separation is 800Oe.
Result of the test is as shown in the table, it can be seen that on the premise of reaching almost identical product index, adds Calx
After, it is possible to reduce ore grinding hop count, thus realize the reduction of energy consumption.
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 or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
These embodiments can be carried out multiple change in the case of departing from the principle of the present invention and objective, revise, replace and modification, this
The scope of invention is limited by claim and equivalent thereof.
Claims (10)
1. the method preparing iron powder, it is characterised in that including:
Metallized pellet is carried out break process, in order to obtain pelletizing granule；
Described pelletizing granule is carried out the first ore grinding process, in order to obtain the first ore grinding powder；
Described first ore grinding powder is carried out the first magnetic separation process, in order to obtain the first slag and the first iron powder；
Described first iron powder is carried out the second ore grinding process, in order to obtain the second ore grinding powder；And
Described second ore grinding powder is carried out the second magnetic separation process, in order to obtain the second slag and the second iron powder,
Wherein, adding Calx in described first ore grinding processes and/or the second ore grinding processes, the addition of described Calx is described
(3-5) % of the quality of metallized pellet.
Method the most according to claim 1, it is characterised in that described metallized pellet full weight of iron mark be 25%～
60%, metallic iron mass fraction is 20%～57%, and degree of metalization is 80%～95%.
Method the most according to claim 1 and 2, it is characterised in that farther include:
Iron-stone being carried out reduction roasting process, in order to obtain metallized pellet, wherein, described iron-stone is selected from alum clay
At least one of ore deposit, high-phosphor oolitic hematite, red mud, copper ashes, nickel slag and lead and zinc smelting dreg.
4. according to the method described in any one of claim 1-3, it is characterised in that the particle diameter of described pelletizing granule is not more than 2 millis
Rice.
5. according to the method described in any one of claim 1-4, it is characterised in that in described first ore grinding powder, particle diameter is little
Described first ore grinding powder in 0.074mm accounts for (60-65) % of gross mass.
6. according to the method described in any one of claim 1-5, it is characterised in that in described second ore grinding powder, particle diameter is little
Described first ore grinding powder in 0.074mm accounts for (70-75) quality % of gross mass.
7. the system implementing to prepare the method for ferrum described in any one of claim 1-6, it is characterised in that including:
Disintegrating machine, described disintegrating machine includes metallized pellet entrance and pelletizing particle outlet；
First ore mill, described first ore mill has pelletizing particle entrance, the first lime inlet and the first ore grinding dust outlet,
Described pelletizing particle entrance is connected with described pelletizing particle outlet；
First magnetic separator, described first magnetic separator has the first ore grinding powdering inlet, the first slag outlet and the outlet of the first iron powder,
Described first ore grinding powdering inlet is connected with described first ore grinding dust outlet；
Second ore mill, described second ore mill has the first iron powder entrance, the second lime inlet and the second ore grinding dust outlet,
Described first iron powder entrance is connected with described first iron powder outlet；And
Second magnetic separator, described second magnetic separator has the second ore grinding powdering inlet, the second slag outlet and the outlet of the second iron powder,
Described second ore grinding powdering inlet is connected with described second ore grinding dust outlet.
System the most according to claim 7, it is characterised in that farther include:
Reduction roasting device, described reduction roasting device has iron-stone entrance and metallized pellet outlet, described metallization
Pelletizing outlet is connected with described metallized pellet entrance.
9. according to the system described in claim 7 or 8, it is characterised in that described reduction roasting device is selected from tunnel cave, revolution
At least one of kiln, shaft furnace and rotary hearth furnace.
10. according to the system described in any one of claim 7-9, it is characterised in that described first ore mill and described second mill
Ore deposit machine is rod mill or ball mill, and described first magnetic separator and described second magnetic separator are magnetic separator or magnetic separation tube.
Priority Applications (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107012276A (en) * | 2017-03-28 | 2017-08-04 | 江苏省冶金设计院有限公司 | The method of vanadium titano-magnetite comprehensive utilization |
| CN108031546A (en) * | 2017-12-27 | 2018-05-15 | 大连地拓环境科技有限公司 | A kind of method of red mud recycling iron |
| CN109136441A (en) * | 2018-08-25 | 2019-01-04 | 张英华 | The production method of the making apparatus and sponge iron and iron powder of sponge iron and iron powder |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003112156A (en) * | 2001-10-09 | 2003-04-15 | Matsushita Electric Ind Co Ltd | Method for treating waste household electric appliance to recycle the same as resources |
| CN101780428A (en) * | 2009-01-20 | 2010-07-21 | 江西铜业集团公司 | Method for adding lime for concentrating mill |
| CN102716801A (en) * | 2012-06-27 | 2012-10-10 | 宜昌市正济文化传播有限公司 | Dressing method for high-phosphor-content oolitic hematite |
| CN103341400A (en) * | 2013-07-02 | 2013-10-09 | 广西大学 | Beneficiation method for reducing superfine grinding quantity of micro-fine particle magnetite |
| CN104099465A (en) * | 2014-07-25 | 2014-10-15 | 北京科技大学 | Method for producing reduced iron power by self-catalysis reduction of high-phosphorus oolitic hematite |
| CN104480301A (en) * | 2014-11-21 | 2015-04-01 | 北京科技大学 | Method for reducing iron tailings and enriching tail concentrate by taking steel slag as additive |
| CN104480323A (en) * | 2014-11-24 | 2015-04-01 | 灵宝金源矿业股份有限公司 | Process of comprehensively recovering various metals from limonite |
| CN104986806A (en) * | 2015-08-04 | 2015-10-21 | 江苏省冶金设计院有限公司 | Method and system for preparing carbonyl iron powder by utilizing red mud |
| CN205904447U (en) * | 2016-08-01 | 2017-01-25 | 江苏省冶金设计院有限公司 | System for preparation iron powder |
-
2016
- 2016-08-01 CN CN201610619368.5A patent/CN106180734A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003112156A (en) * | 2001-10-09 | 2003-04-15 | Matsushita Electric Ind Co Ltd | Method for treating waste household electric appliance to recycle the same as resources |
| CN101780428A (en) * | 2009-01-20 | 2010-07-21 | 江西铜业集团公司 | Method for adding lime for concentrating mill |
| CN102716801A (en) * | 2012-06-27 | 2012-10-10 | 宜昌市正济文化传播有限公司 | Dressing method for high-phosphor-content oolitic hematite |
| CN103341400A (en) * | 2013-07-02 | 2013-10-09 | 广西大学 | Beneficiation method for reducing superfine grinding quantity of micro-fine particle magnetite |
| CN104099465A (en) * | 2014-07-25 | 2014-10-15 | 北京科技大学 | Method for producing reduced iron power by self-catalysis reduction of high-phosphorus oolitic hematite |
| CN104480301A (en) * | 2014-11-21 | 2015-04-01 | 北京科技大学 | Method for reducing iron tailings and enriching tail concentrate by taking steel slag as additive |
| CN104480323A (en) * | 2014-11-24 | 2015-04-01 | 灵宝金源矿业股份有限公司 | Process of comprehensively recovering various metals from limonite |
| CN104986806A (en) * | 2015-08-04 | 2015-10-21 | 江苏省冶金设计院有限公司 | Method and system for preparing carbonyl iron powder by utilizing red mud |
| CN205904447U (en) * | 2016-08-01 | 2017-01-25 | 江苏省冶金设计院有限公司 | System for preparation iron powder |
Non-Patent Citations (1)
| Title |
|---|
| 《选矿手册》编辑委员会: "《选矿手册 第2卷 第2分册》", 31 October 1993 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107012276A (en) * | 2017-03-28 | 2017-08-04 | 江苏省冶金设计院有限公司 | The method of vanadium titano-magnetite comprehensive utilization |
| CN108031546A (en) * | 2017-12-27 | 2018-05-15 | 大连地拓环境科技有限公司 | A kind of method of red mud recycling iron |
| CN108031546B (en) * | 2017-12-27 | 2019-11-05 | 大连地拓环境科技有限公司 | A kind of method of red mud recycling iron |
| CN109136441A (en) * | 2018-08-25 | 2019-01-04 | 张英华 | The production method of the making apparatus and sponge iron and iron powder of sponge iron and iron powder |
| CN109136441B (en) * | 2018-08-25 | 2021-01-08 | 张英华 | Method for preparing sponge iron and iron powder |
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