CN102574126B - Ferromagnetic material separation apparatus - Google Patents
Ferromagnetic material separation apparatus Download PDFInfo
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- CN102574126B CN102574126B CN201080047371.5A CN201080047371A CN102574126B CN 102574126 B CN102574126 B CN 102574126B CN 201080047371 A CN201080047371 A CN 201080047371A CN 102574126 B CN102574126 B CN 102574126B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
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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
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
-
- 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
- B03C1/26—Magnetic separation acting directly on the substance being separated with free falling material
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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
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
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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
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/16—Magnetic separating gases form gases, e.g. oxygen from air
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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
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/20—Magnetic separation whereby the particles to be separated are in solid form
Abstract
A ferromagnetic material separation apparatus comprises a separation chamber into which a gaseous or aqueous stream containing a heterogeneous powder mixture dispersed therein and containing ferromagnetic particles is introduced to separate the ferromagnetic particles from particles of other powdery material according to the difference in mass, and a magnetic field-generating unit which is disposed so as to apply a magnetic force to the ferromagnetic particles in the heterogeneous powder mixture in the separation chamber in the direction toward a collection zone for the separated ferromagnetic material. Thereby, for example, as in the case of separation of an iron component from pulverized iron slag, the ferromagnetic material can efficiently be separated from the heterogeneous powder mixture containing ferromagnetic material.
Description
Technical field
For example the present invention relates to, from separating ferromagnetic technology, the technical field of separation of iron composition in the slag that is used to be produced by iron-smelting process containing ferromagnetic xenogenesis mixed powder.
Background technology
In iron-smelting process (particularly molten iron pretreatment or converter operation), produce the slag (blast furnace slag) of huge amount.These slags are in order to remove the impurity in molten iron or molten steel or not need element and the calcium that adds is additive reacts and the material that generates, not only contain the element compound being removed in slag, also containing a large amount of ferrous components.It is block that the form of slag mostly is, and its size is large, reaches in addition hundreds of mm persons.
As mentioned above, owing to containing a large amount of ferrous components in slag, thereby all the time a lot of for the research of its renewable resources.In addition, slag itself is also studied as the raw-material recycling of for example calcic.
For example, in order to separate and to reclaim ferrous components from slag, mixing and cold iron source mutually with waste material in converter operation, first utilize the sieve (diagrid type sieve) that is known as diagrid to carry out shape sorting to the Large Furnace clinker of hundreds of mm.Then, occur fixed owing to having passed through ferrous components piece and non-ferrous components piece in the small boiler clinker of diagrid type sieve, thereby utilize beater grinder (hammer crusher) or rod mill (rod mill) to pulverize (crushing) to make the size of hundreds of μ m ~ tens of mm, to promote the monomer separation (liberation) of ferrous components and non-ferrous components.Afterwards, by magnetic force sorting device (magnetic separator), ferrous components is separated with non-ferrous components.Magnetic force sorting device can use mounted model (hanging electromagnet (suspended electromagnets)) or drum type (magnetic drum separator (magnetic drum separators)), pulley type (magnetic pulley (magnetic pulleys)) etc.
As the method for ferrous components being carried out to monomer separation, also has the situation that slag is heated, pulverized controlling cool time afterwards.Depend on cool time, can not broken ferrous components piece and only by broken apart fixed non-ferrous components piece.Or, can the extremely tens of μ m of micronize left and right.
In either method, from needless to say be if micronize carry out, the monomer separationization of ferrous components and non-ferrous components is carried out.Be explained, for the differentiation technology of distinguishing metallic etc. from slag, for example, in patent documentation 1 or patent documentation 2, describe to some extent.
Prior art document
Patent documentation
Patent documentation 1: 2006 No. 142136 communiques of TOHKEMY
Patent documentation 2: 10 No. 130041 communiques of Japanese kokai publication hei.
Summary of the invention
The technical problem that invention will solve
In order to improve the separation concentration from the ferrous components in blast furnace slag, need to promote the monomer separation of ferrous components and non-ferrous components.As mentioned above, as long as micronize is carried out, monomer separationization carries out, thereby repeatedly carry out furnace clinker mechanical crushing, reduce particle diameter.Or also there is the situation that makes its small particle diameter by heat treatment.
On the other hand; as shown in figure 11; in general in magnetic force sorting device 100 in the past in the time that particle diameter reduces, be easy to occur in agglutination phenomenon 108 that sandwiches the parcel phenomenon 107 of non-ferrous components particle (non magnetic particle 102) between magnet 110 and ferrous components particle (magnetic particle 101) or cause due to dry type micronize etc.And, due to these phenomenons, make to be easy to occur that non magnetic particle 102 is separated to magnetic side (magnetic side) 105 and magnetic particle 101 is separated to the situation of non magnetic side 104, thereby be difficult to improve and separate concentration (separation accuracy).Therefore, the mixed powder of magnetic particle 101 and non-property particle 102 in the xenogenesis mixed powder 111(Figure 11 that need to manage extremely to slow down) to the speed of the supply 103 in magnetic force sorting device, reduce the bed thickness of xenogenesis mixed powder 111 on device etc.But blast furnace slag is because every 1 hour needs are processed several tons ~ tens of tons, thereby to utilize the magnetic force sorting device of the feed speed that can only extremely slow down be unpractical.
In contrast, in patent documentation 1, disclose the technology of not pulverizing furnace clinker and ferrous components is separated with non-ferrous components, but separation circuit becomes complicated, becomes the main cause that processing cost increases.
In addition, as the separate particles method that can avoid the aggegation causing due to dry type micronize, also considered the disclosed wet process of patent documentation 2.But liquid waste processing expense becomes huge in wet process.
The present invention completes in view of the above fact; its object be for example to provide as from micronized blast furnace slag when separation of iron composition; in the time of separation of iron magnet from contain ferromagnetic xenogenesis mixed powder, the ferromagnetic separator that can efficiently ferromagnet be separated.
For the method for technical solution problem
As mentioned above, in order to improve the separation concentration from the ferrous components in blast furnace slag, first, need to be by blast furnace slag micronize, carry out the monomer separation of ferrous components and non-ferrous components.
Then, from micronized blast furnace slag, ferrous components being separated with non-ferrous components, is a large amount of processing (every 1 hourage ton ~ tens of tons) but prerequisite is blast furnace slag.As mentioned above, general magnetic separating is due to the parcel phenomenon of particle or the agglutination phenomenon of particle, the processing speed that must slow down, thereby cannot be applicable to be treated in a large number the situation of prerequisite.
Thereby, the inventor etc. for solve above-mentioned from micronized blast furnace slag when separation of iron composition etc., from the problem containing producing when separation of iron magnet ferromagnetic xenogenesis mixed powder, conduct in-depth research.Result is expected in the time of separation of iron magnet from contain ferromagnetic xenogenesis mixed powder, the air-flow or the current that are dispersed with xenogenesis mixed powder are directed into the separation chamber (separation chamber of poor quality) that utilizes the power (for example gravity) changing according to powder quality difference effect size to separate, in this separation chamber of poor quality, to the ferromagnet in xenogenesis mixed powder, except gravity etc., also do in order to magnetic force.
; for example, in the xenogenesis mixed powder that is mixed with 2 kinds of powders; in the time there is overlapping scope in the Mass Distribution of 1 powder in the powder of various species; for the powder of this scope; be difficult to suitably separate recovery by separation of poor quality, must reduce yield or the rate of recovery of each powder.Thereby, utilize the fact that side's powder is nonmagnetic material etc. for ferromagnet, the opposing party's powder, there is the ferromagnet of overlapping range for the Mass Distribution of 1 powder and the Mass Distribution of other 1 powder, by also doing in order to magnetic force, can suitably ferromagnet be separated to recovery with nonmagnetic material etc. except gravity etc.Thus, can improve the yield rate of recovery.
Remove and reclaim the situation situation of highly purified iron particle (and/or reclaim) of highly purified slag particle for iron particle being separated from the xenogenesis mixed powder that is mixed with slag particle (nonmagnetic material) and iron particle (ferromagnet), use Figure 10 that the separation of aforesaid way is described.
First, as shown in Figure 10 (a) shows, while observing the Mass Distribution of 1 particle, the M1 scope that quality is little is only that the M3 scope that slag, quality are large is only iron, and middle M2 scope is the overlapping part of slag and iron.
Now, in the time will reclaiming highly purified slag by separation of poor quality, as shown in Figure 10 (b), if while making separation point position T of poor quality be the border of M1 and M2, in the little side of quality, the slag of M1 scope can reclaim with purity 100%.But now,, the slag of M2 is owing to being separated to the side that quality is large, thereby the amount of the slag reclaiming is limited.
Thereby, in order to increase the yield of slag, consider as shown in Figure 10 (c), make separation point position T of poor quality to the large only mobile Δ M of a side of quality.Now, the slag in the S1 region in figure is also recovered to the side that quality is little, the yield of slag is increased, and the iron in the S2 region in figure is also recovered to the side that quality is little simultaneously.As a result, the purity that is recovered to the slag of the side that quality is little reduces greatly.
And as shown in Figure 10 (d), in the time making separation point position T of poor quality only mobile Δ M carry out separation of poor quality to the large side of quality, if to the iron particle effect magnetic force in Δ M scope, the iron in S3 region in figure is separated while removing to the large side of quality, and the iron that is recovered to the side that quality is little is only the iron in the S4 region in figure.As a result, can reclaim in large quantities highly purified slag in the little side of quality.When the purity of the iron being recovered when the large side of heavy apparent mass, for example can make separation point position T of poor quality is the border of M2 and M3, similarly acts on magnetic force, and at least a portion of the iron of M2 is recycled to the side that quality is large.
Be explained, under ideal situation, if can make separation point position T of poor quality be the border of M2 and M3, the iron in M2 scope is all separated to the side that quality is large, can with purity 100%, whole slags be reclaimed in the little side of quality, and in the large side of quality, whole iron be reclaimed.
One of method based on above-mentioned idea example is the method for giving magnetic force in the gravity settling separation that is dispersed with ferromagnetic air-flow or current.Particularly, be to make xenogenesis mixed powder be scattered in air-flow or current and be directed into gravity settling chamber, near the inlet portion of gravity settling chamber, so that ferromagnet is subject to the mode of magnetic force and arranges field generator for magnetic, make gravity and magneticaction in ferromagnetic method.
That is, first utilize fluid (air-flow or current) to carry containing ferromagnetic xenogenesis mixed powder, make thus xenogenesis mixed powder become dispersity.Particularly, in the time that fluid is current, only in current, drop into xenogenesis mixed powder, dispersion effect just large.In the time that fluid is air-flow, by utilizing diffuser plate or diffusion compressed air (the loose sky of pressing of Expansion) etc. to realize dispersity.And, in conveying, utilize the sinuous flow effect in fluid (air-flow or current) to act on shearing force, realize the monomer separation state of having dismissed aggegation conveying particle (xenogenesis mixed powder).And, xenogenesis mixed powder is encased in to gravity settling chamber, utilize the separation (gravity settling separation) of gravitational settling effect.The ferromagnet composition packing into is in the horizontal direction because weight is large, thereby sedimentation on gravity direction under entrance, the light weight thing centered by nonmagnetic material composition along with fluid flow or by the inertia of horizontal direction from entrance to distant place sedimentation.Like this, separated by the difference of sedimentation location.
But in order to increase treating capacity, need to increase flow velocity, in the time that flow velocity increases, the particle that is settled down to weight thing side can be brought to light weight thing side.Now, the yield that is settled down to the ferromagnet composition of weight thing side can reduce, and simultaneously ferromagnet composition is blended in the nonmagnetic material composition of light weight thing side, separation purity (separation accuracy) reduces.Thereby, in order to improve, ferromagnet is caught to the ability of weight thing side, near the entrance of gravity settling chamber, field generator for magnetic is set.Because the effect of this magnetic force only acts on ferromagnet, even if thereby increase flow velocity also can promote the sedimentation of ferromagnet to weight thing side.
So, only when utilizing the separation of mass discrepancy, in the case of ferromagnet and nonmagnetic material particle as other powder identical in quality, cannot separate.Thereby, by and with magnetic force, only to ferromagnet composition effect magnetic force, the present invention has realized the separative efficiency that significantly improves ferromagnet composition.
According to above-mentioned idea, the present invention has following characteristics.
[1] ferromagnetic separator, it is for for from separating ferromagnetic separator containing ferromagnetic xenogenesis mixed powder, and it possesses and imports the separation chamber that is dispersed with the air-flow of xenogenesis mixed powder or current and by mass discrepancy, ferromagnet is separated with other powder; With the field generator for magnetic arranging so that magnetic force acts on the ferromagnetic mode in described xenogenesis mixed powder on wish separates the direction in this ferromagnetic region in this separation chamber.
[2] according to the ferromagnetic separator above-mentioned [1] Suo Shu, wherein, described separation chamber imports to be dispersed with the air-flow of xenogenesis mixed powder or the gravity settling chamber of current, near the described field generator for magnetic field generator for magnetic that to be the inlet portion of described gravity settling chamber arrange so that described ferromagnet is subject to the mode of magnetic force, makes gravity and magneticaction in described ferromagnet.
[3], according to the ferromagnetic separator above-mentioned [1] or [2] Suo Shu, wherein, field generator for magnetic possesses the big or small formation of the magnetic flux density in the space of can regulating action passing through in ferromagnet.
[4], according to the ferromagnetic separator above-mentioned [3] Suo Shu, wherein, field generator for magnetic is constructed to repeat during certain to increase and reduces to act on the size of the magnetic flux density in the space that ferromagnet passes through.
[5] according to the ferromagnetic separator above-mentioned [4] Suo Shu, wherein, be directed into after the air-flow that is dispersed with xenogenesis mixed powder of separation chamber or the flow velocity of current reducing, reduce the size of magnetic flux density.
[6], according to the ferromagnetic separator above-mentioned [5] Suo Shu, wherein, before increasing the flow velocity of air-flow or current, increase the size of magnetic flux density.
Invention effect
In the present invention, for example, separate (gravity settling separation) ferromagnet from contain ferromagnetic xenogenesis mixed powder time, only act on ferromagnetic magnetic force owing to applying, thereby ferromagnetic separation accuracy significantly improves, compare separation of iron magnet efficiently with situation about separating by magnetic separating like that in the past.As a result, can carry out at high speed in a large number ferromagnetic renewable resources.
Brief description of the drawings
Fig. 1 is the figure that represents embodiment of the present invention 1.
Fig. 2 is the figure that represents the situation that has used gravitational separation device in the past.
Fig. 3 is the figure that represents embodiment of the present invention 2.
Fig. 4 is the figure that represents embodiment of the present invention 3.
Fig. 5 is the figure that represents embodiment of the present invention 4.
Fig. 6 is the figure that represents embodiment of the present invention 5.
Fig. 7 is the figure that represents the variant of embodiment of the present invention 5.
Fig. 8 is the figure that represents other variant of embodiment of the present invention 5.
Fig. 9 is the figure that represents the embodiment of the present invention 1.
Figure 10 is the figure that represents basic idea of the present invention.
Figure 11 is the figure of the problem of expression prior art (common magnetic separating).
Detailed description of the invention
Based on brief description of the drawings embodiments of the present invention.
Be explained; in following embodiment; as from the situation of separation of iron composition micronized blast furnace slag etc.; separation of iron magnet from contain ferromagnetic xenogenesis mixed powder; but for obtaining this containing method of ferromagnetic xenogenesis mixed powder, narrate as example blast furnace slag is carried out to micronized situation.
As blast furnace slag is carried out to micronized method, the first micronisation process is mechanical crushing.The mechanical crushing of blast furnace slag is carried out after coarse crushing at the beater grinder or the jaw crusher (jaw crusher) that are used as Roughpulverizer, uses ball mill (ball mill), rod mill, jet mill (jet mill), sells excellent pulverizer (pin mill) etc. in order to carry out micronize.The second micronized method is that heat is pulverized (heat treatment pulverizing).Blast furnace slag is heated to behind 1000 ~ 1300 DEG C of left and right slowly cooling.
Like this, can obtain containing ferromagnetic xenogenesis mixed powder (mixture of ferromagnet particle and nonmagnetic material particle).Be explained, in the application using the particle separating by suitable magnetic separating as ferromagnet particle, can regard in fact nonmagnetic material particle beyond this ferromagnet particle as.
In the following embodiments, by the separation of iron magnet particle ferromagnetic xenogenesis mixed powder (mixture of ferromagnet particle and nonmagnetic material particle) that contains from obtaining as mentioned above.Be explained, here, suppose as ferrous components and blast furnace slag, ferromagnet particle one side is larger with nonmagnetic material particle phase specific mass (weight).In contrary situation, the configuration of the following embodiment appropriate change field generator for magnetic of reference etc.
[embodiment 1]
Embodiments of the present invention 1 are shown in to Fig. 1.
Longitudinal section as shown in Figure 1, the related ferromagnet separator 11 of present embodiment 1 possesses the gravity settling chamber 12 that imports the fluid (air-flow or current) that is dispersed with xenogenesis mixed powder (mixture of ferromagnet particle 1 and nonmagnetic material particle 2); With near inlet portion at this gravity settling chamber 12 (near inlet portion near stream pipe arrangement side or inlet portion gravity settling chamber wall at least any one) field generator for magnetic 13 that arranges so that ferromagnet particle 1 is subject to the mode of magnetic force.
Be explained, field generator for magnetic 13 uses permanent magnet or electromagnet.Magnetic field can be along near of the entrance of gravity settling chamber 12 17 and many places occur, and quantity more at most effect is larger, for example, configure 2 ~ 6 left and right, places.The intensity in magnetic field can be selected 100G(Gauss according to particle separation diameter) ~ 20000G(Gauss) left and right.
In the ferromagnet separator 11 forming as mentioned above, first make to carry xenogenesis mixed powder (mixture of ferromagnet particle 1 and nonmagnetic material particle 2) with fluid (air-flow or current), thereby xenogenesis mixed powder is in dispersity.That is, in conveying, utilize fluid sinuous flow effect and to xenogenesis mixed powder effect shearing force, thereby realize the monomer separation state of aggegation of having dismissed.
In addition, the ferromagnet particle 1 being transported by fluid and nonmagnetic material particle 2 are packed in gravity settling chamber 12, utilize the separation (gravity settling separation) of gravitational settling effect.The ferromagnet particle 1 packing into is in the horizontal direction because quality (weight) is large, thereby sedimentation on gravity direction under entrance, the separated weight side recoverer 14 that is recycled to, light weight thing centered by nonmagnetic material particle 2 is followed flowing of fluid or the inertia by horizontal direction and from entrance to distant place sedimentation, the separated light weight side recoverer 15 that is recycled to.Like this, by the difference of sedimentation location, ferromagnet particle 1 is separated with nonmagnetic material particle 2.The fluid that ferromagnet particle 1 and nonmagnetic material particle 2 are delivered to gravity settling chamber 12 18 is discharged from (for example, for gas time, be exhaust) as discharging fluid 19 from exporting.
But in order to increase treating capacity, need to increase flow velocity, longitudinal section as shown in Figure 2, uses near the gravity settling separation device in the past (ferromagnet separator) 91 o'clock that does not possess field generator for magnetic 97 of the entrances of gravity settling chamber 92, and following problem can occur.That is, while increasing flow velocity in order to increase treating capacity, hydrokinetic impact increases, and the ferromagnet particle 1 that is settled down to weight thing side recoverer 94 is brought to light weight thing side recoverer 95(dotted arrow 1a).Now, the yield that is settled down to the ferromagnet composition of weight thing side recoverer 94 reduces, and ferromagnet composition is blended in the nonmagnetic material composition of light weight thing side recoverer 95 simultaneously, and separation purity reduces.
On the other hand, in embodiments of the present invention 1, due to field generator for magnetic 13 being set near the entrance at gravity settling chamber 12, thereby the effect of this magnetic force only acts on ferromagnet particle 1, this magnetic force becomes the brake force of convection current muscle power, promote 1 sedimentation in weight thing side of ferromagnet particle, ferromagnet particle 1 is captured and is recycled to the ability raising of weight side recoverer 14.Thus, even if increase flow velocity in order to increase treating capacity, also can obtain good separation purity.Be explained, when the inlet portion that magnetic generating means 13 is configured in to gravity settling chamber side surface side is at a distance time, enter the particle that magnetic force involves scope and reduce, cannot obtain the effect that sufficient separation accuracy improves.In addition, when the inlet portion that is configured in pipe arrangement side is at a distance time, if magnetic force weakens, the speed of ferromagnet particle is accelerated by fluid force again; If magnetic force strengthens, can cause the productivity ratio that ferromagnetic Speed Reduction causes to reduce.On the other hand, magnetic force generator 13 is configured in near of the degree that there is no these problems.
[embodiment 2]
Embodiments of the present invention 2 are shown in to Fig. 3.
Longitudinal section as shown in Figure 3, the essential structure of the related ferromagnet separator 21 of the present embodiment 2 ferromagnet separator 11 related with above-mentioned embodiment 1 is identical.But in embodiment 1, the bottom (recoverer) of gravity settling chamber 12 becomes two parts of weight side recoverer 14 and light weight side recoverer 15, and in present embodiment 2, the bottom (recoverer) of gravity settling chamber 22 becomes 3 parts, weight side recoverer 24, with two parts (light weight side recoverer 25,26) of light weight side recoverer being further divided into according to mass discrepancy.Be explained, 23 in Fig. 3 is near the field generator for magnetic that are disposed in 27 of the entrances of gravity settling chamber 22.
[embodiment 3]
Embodiments of the present invention 3 are shown in to Fig. 4.
Longitudinal section as shown in Figure 4, the basic conception of the related ferromagnet separator 31 of the present embodiment 3 ferromagnet separator 11 related with above-mentioned embodiment 1 is identical.But in above-mentioned embodiment 1, the bottom (recoverer) of gravity settling chamber 12 becomes two parts of weight side recoverer 14 and light weight side recoverer 15, and in present embodiment 3, gravity settling chamber 32 becomes single cell structure, makes weight thing (ferromagnet particle 1) catch to weight side recoverer 34, the light weight thing (nonmagnetic material particle 2) of the bottom of gravity settling chamber 32 and discharge from the outlet 38 of being located at gravity settling chamber 32 tops.Be explained, 33 in Fig. 4 is near the field generator for magnetic that are disposed in 37 of the entrances of gravity settling chamber 32.
Here, light weight thing (nonmagnetic material particle 2) for example can be by aspirating and carry out with air blast etc. from the discharge on gravity settling chamber 32 tops.For example, and light weight thing (nonmagnetic material particle 2) can catch to reclaim by bag filter etc.
[embodiment 4]
Embodiments of the present invention 4 are shown in to Fig. 5.
In present embodiment 4, the size of the magnetic flux density (ferromagnet particle is by the magnetic flux density in space) in the space that field generator for magnetic can regulating action passes through in ferromagnet particle, can repeat to increase and reduce the size of this magnetic flux density during certain.
As mentioned above, in embodiment 1 ~ 3, use permanent magnet or electromagnet to be used as field generator for magnetic 13,23,33, but present embodiment 4 is particularly used the situation of electromagnet wherein.
, near the longitudinal section inlet portion of gravity settling chamber 12,22,32 as shown in Figure 5 (a), in present embodiment 4, is equipped with 4 electromagnet (the 1st electromagnet 301 ~ 4th electromagnet 304) and is used as field generator for magnetic 13,23,33.
Like this, use electromagnet as field generator for magnetic 13,23,33 o'clock, there is following advantage: by repeat the excitation (ON) of electromagnet, non-excitation (OFF) during certain, can the ferromagnet particle 1 that attract the wall that is attached to magnetic field generating unit be brushed lightly in the time of non-excitation.Now, as shown in Fig. 5 (b) (operational procedure in magnetic field), if can maintain the state of always several electromagnet running of certain moment the switching time of the adjacent electromagnet that staggers, can carry out simultaneously ferromagnet particle 1 brush lightly and the effect of magnetic force.
In addition, here by repeat the excitation (ON) of electromagnet, non-excitation (OFF) during certain, make repeat to increase and reduce ferromagnet particle by the size of the magnetic flux density in space during certain, but be not limited to make it complete non-excitation (OFF).That is, also can be by during certain, the size of the exciting current of electromagnet being changed to below defined threshold, and make repeat to increase and reduce ferromagnet particle by the size of the magnetic flux density in space during certain.Also identical in following mode and example.
Be explained, in order to obtain identical effect, also electromagnet can be exchanged and drives.Frequency is arbitrarily, but according to the characteristic of electromagnet and drive unit, in high-frequency region, magnetic field intensity becomes not enough sometimes, thereby in the roll off the production line situation of electromagnet of the number of turns 1000 circles left and right of the driving power of 2kW left and right, can be 50Hz left and right.Same with the switching mode of above-mentioned adjacent electromagnet, by making the phase shifting of adjacent electromagnet, can certain in a flash always several electromagnet produce enough big or small magnetic field.
And then according to circumstances, also can carry out same content as field generator for magnetic 13,23,33 with permanent magnet.Now, by arrange capable of regulating permanent magnet position mechanism, the position of permanent magnet is approached or away from the wall of magnetic field generating unit, can regulate ferromagnet particle by the size of the magnetic flux density in space, can during certain, repeat to increase and reduce this magnetic flux density in addition.
Be explained, in principle, during there is no need to make being spaced apart of the non-excitation of excitation certain, but from avoiding operational complicated, the viewpoint of guaranteeing stable operation, be preferably made as certain during.Wherein, during excitation and non-excitation, need not to be equal length, in addition also can be different during the non-excitation of the excitation of each electromagnet.
Field generator for magnetic is in order to repeat increase and reduce ferromagnet particle by the magnetic flux density in space during certain, preferably has the memory device of for example memory operational procedure as Fig. 5 (b) as shown in, for example, according to the control appliance of this code controlling magnetic field generating means (control the electric current of the each electromagnet of inflow or control the position of each permanent magnet).
[embodiment 5]
Embodiments of the present invention 5 are shown in to Fig. 6 ~ Fig. 8.
In above-mentioned embodiment 4, make repeat to increase and reduce ferromagnet particle by the size of the magnetic flux density in space during certain.But, in the time reducing magnetic flux density big or small under the state of the fluid (current, air-flow) that is being dispersed with xenogenesis mixed powder with regulation flow rate, the ferromagnet particle that the Braking that magnetic force produces disappears rises in fluid by fluid force, can be recovered to the light weight side recoverer of gravity settling chamber.
Therefore, in present embodiment 5, possess after the flow velocity of the fluid that temporarily reduces to be dispersed with xenogenesis mixed powder (current, air-flow), reduce ferromagnet particle by the big or small formation of the magnetic flux density in space.
Or and then, possess at the flow velocity (being back to original size) that again increases fluid (current, air-flow) before, increase ferromagnet particle by the formation of the size (being back to original size) of the magnetic flux density in space.
For example, as shown in Fig. 6 (operational procedure in fluid and magnetic field), in the time repeating by the state of magnet excitation (excitation ON) with by the state of the non-excitation of magnet (excitation OFF), can repeat to become the state (fluid ON) with regulation flow velocity streaming flow and stop the mobile state of fluid (fluid OFF) completely, making carrying out after fluid OFF, carrying out excitation OFF.
Or and then, as shown in Fig. 7 (other operational procedure in fluid and magnetic field), before again carrying out fluid ON, carry out excitation ON.In other words, carrying out after excitation ON, carrying out fluid ON.
Be explained, replace Fig. 6 and as shown in Fig. 8 (other operational procedure of another of fluid and magnetic field), can on the flow velocity of fluid, set in advance threshold value, by the state more than flow rate threshold of fluid be made as fluid ON, state that rate of flow of fluid is less than to threshold value is made as fluid OFF, carry out carrying out excitation OFF after fluid OFF.
In addition, threshold value also can be set in excitation, based on this threshold value come regulation excitation ON and excitation OFF(not completely excitation OFF, comprise that to make excitation be the situation below described threshold value), carry out carrying out excitation OFF after fluid OFF.
In addition, the switching of fluid ON and fluid OFF can be by regulating the thrust (pump, pressure fan) of fluid, the aperture that the shock absorber of fluid flowing path is located in adjusting to carry out.
Thus, in present embodiment 5, pass through the size of the magnetic flux density in space by reducing ferromagnet particle, even if the brake force that magnetic force produces is difficult to act on the state of ferromagnet particle, because acted on fluid force reduces, ferromagnet particle also can not rise in fluid, makes ferromagnet particle be positively recycled to the weight side recoverer of gravity settling chamber.
Ferromagnetic separator is in order to realize the operation shown in above-mentioned Fig. 6 ~ Fig. 8, preferably possesses the memory device of memory (fluid and magnetic field) operational procedure, for example, according to (controlling the electric current that flows into each electromagnet or the position of controlling each permanent magnet) control appliance of this code controlling magnetic field generating means, for example, according to control appliance such as thrust or the shock absorber aperture of described pump (control) of this code control rate of flow of fluid.
Like this, in above-mentioned embodiment 1 ~ 5, in the time ferromagnet particle 1 being separated to (gravity settling separation) from contain the xenogenesis mixed powder of ferromagnet particle 1, make the additional magnetic force that only acts on ferromagnet particle 1.Therefore, the separation accuracy of ferromagnet particle 1 significantly improves, and compares, efficiently separation of iron magnet particle 1 with situation about separating by magnetic separating in the past.Result can be carried out ferromagnetic renewable resources in a large number at high speed.
Be explained, the present invention is not defined in above-mentioned gravity settling separation, and the separation (separation of poor quality) that the power changing because of powder quality difference as long as utilization effect size separates, can be used without particular limitation.Field generator for magnetic for example, so that magneticaction makes the mode of the direction in the region (weight side recoverer 14 in the ferromagnet separator 11 of Fig. 1) of ferromagnet separation arrange by separation of poor quality in wish.
In the present invention, any of gas, liquid is all suitable as fluid, in the time of the powder body containing in a large number below 30 microns, preferably uses current.In addition, in the present invention, the match ratio in the kind of ferromagnet or nonmagnetic material or particle diameter, xenogenesis mixed powder etc. is not particularly limited.,, as long as becoming the powder of gravity settling separation object, can use without particular limitation the present invention.
Embodiment
[embodiment 1]
As the inventive example, based on described embodiments of the present invention 5, from the mixture of ferromagnet particle (ferrous components) and nonmagnetic material particle (slag), ferromagnet particle (ferrous components) is separated and removed, carry out the recovery of nonmagnetic material particle (slag).Blast furnace slag (ferrous components is approximately 10 ~ 20 quality % on average) utilizes ball mill miniaturization to average grain diameter 250 μ m left and right in advance, utilizes the processing of separator.Be explained, device uses the ferromagnet separator 11 shown in Fig. 1.
Now, as described in as shown in Fig. 8, in the flow velocity of fluid, threshold value is set, as shown in Figure 9, be that more than 5m/s state is made as fluid ON, state that the flow velocity of fluid is less than to 5m/s is made as fluid OFF by the flow velocity of fluid.In addition, the state of 2000G is made as to excitation ON, excitation halted state is made as to excitation OFF.And, make becoming after fluid OFF, become excitation OFF.The order of fluid ON and excitation ON is identical with Fig. 6.
Be explained, in order to compare, use the device of gravity settling separation in the past 91 shown in earlier figures 2 as past case, from the mixture of ferromagnet particle (ferrous components) and nonmagnetic material particle (slag), ferromagnet particle (ferrous components) is separated and removed, carry out the recovery of nonmagnetic material particle (slag).
Result, in past case, the incorporation rate of ferromagnet particle (ferrous components) in the nonmagnetic material particle (slag) of light weight side recoverer counts 0.5% with quality %, and in the inventive example, the ratio that ferromagnet particle (ferrous components) is recovered to light weight side recoverer significantly reduces, the incorporation rate of ferromagnet particle (ferrous components) in the nonmagnetic material particle (slag) of light weight side recoverer counts 0.2% with quality %, and separative efficiency is significantly improved.
Industrial applicability
By the present invention, can significantly improve from containing separation accuracy when separation of iron magnet ferromagnetic xenogenesis mixed powder and can separate at high speed in a large number.Therefore, can improve the efficiency from the recovery renewable resources of the ferromagnet composition in xenogenesis mixture or non-ferromagnetic body composition.
Symbol description
1 ferromagnet particle
2 nonmagnetic material particles
11 ferromagnet separators
12 gravity settling chambers
13 field generator for magnetic
14 weight side recoverers
15 light weight side recoverers
The entrance of 17 gravity settling chambers
The outlet of 18 gravity settling chambers
19 discharge fluid
21 ferromagnet separators
22 gravity settling chambers
23 field generator for magnetic
24 weight side recoverers
25 light weight side recoverers
26 light weight side recoverers
The entrance of 27 gravity settling chambers
The outlet of 28 gravity settling chambers
31 ferromagnet separators
32 gravity settling chambers
33 field generator for magnetic
34 weight side recoverers
The entrance of 37 gravity settling chambers
The outlet of 38 gravity settling chambers
91 ferromagnet separators
92 gravity settling chambers
94 weight side recoverers
95 light weight side recoverers
The entrance of 97 gravity settling chambers
The outlet of 98 gravity settling chambers
99 discharge fluid
100 magnetic force sorting devices in the past
101 magnetic particles
102 non magnetic particles
The supply of 103 xenogenesis mixed powders
104 non magnetic side recoverers
105 magnetic side recoverers
The rise phenomenon of 106a particle
106b particle departs from rise state person
The parcel phenomenon of 107 particles
The agglutination phenomenon of 108 particles
The Electrostatic Absorption of 109 particles
110 magnet
111 xenogenesis mixed powders
301 the 1st electromagnet
302 the 2nd electromagnet
303 the 3rd electromagnet
304 the 4th electromagnet
T separation point position of poor quality
Claims (5)
1. ferromagnetic separator, it is for separating ferromagnetic separator from containing ferromagnetic xenogenesis mixed powder, it possess import be dispersed with the air-flow of xenogenesis mixed powder or current separation chamber ferromagnet being separated with other powder by mass discrepancy, with in this separation chamber so that magnetic force acts on the field generator for magnetic that the ferromagnetic mode in described xenogenesis mixed powder arranges on wish separates the direction in this ferromagnetic region
Wherein, described separation chamber imports to be dispersed with the air-flow of xenogenesis mixed powder or the gravity settling chamber of current, near the described field generator for magnetic field generator for magnetic that to be the inlet portion of described gravity settling chamber arrange so that described ferromagnet is subject to the mode of magnetic force, makes gravity and magneticaction in described ferromagnet.
2. ferromagnetic separator according to claim 1, wherein, field generator for magnetic possesses the big or small formation of the magnetic flux density in the space of can corrective action passing through in ferromagnet.
3. ferromagnetic separator according to claim 2, wherein, field generator for magnetic is constructed to repeat during certain to increase and reduces to act on the size of the magnetic flux density in the space that ferromagnet passes through.
4. ferromagnetic separator according to claim 3, wherein, is directed into after the air-flow that is dispersed with xenogenesis mixed powder of separation chamber or the flow velocity of current reducing, and reduces the size of magnetic flux density.
5. ferromagnetic separator according to claim 4, wherein, before increasing the flow velocity of air-flow or current, increases the size of magnetic flux density.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-243231 | 2009-10-22 | ||
| JP2009243231 | 2009-10-22 | ||
| JP2010-214627 | 2010-09-27 | ||
| JP2010214627A JP5573546B2 (en) | 2009-10-22 | 2010-09-27 | Ferromagnetic separator |
| PCT/JP2010/068786 WO2011049229A1 (en) | 2009-10-22 | 2010-10-18 | Ferromagnetic material separation apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102574126A CN102574126A (en) | 2012-07-11 |
| CN102574126B true CN102574126B (en) | 2014-11-26 |
Family
ID=43900451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080047371.5A Expired - Fee Related CN102574126B (en) | 2009-10-22 | 2010-10-18 | Ferromagnetic material separation apparatus |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5573546B2 (en) |
| KR (1) | KR101398114B1 (en) |
| CN (1) | CN102574126B (en) |
| WO (1) | WO2011049229A1 (en) |
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| US9308536B2 (en) | 2011-02-23 | 2016-04-12 | Osaka University | Method and apparatus for separation of mixture |
| KR101933138B1 (en) * | 2011-06-02 | 2018-12-27 | 신토고교 가부시키가이샤 | Classification device, and classification method, blast machining device provided with this classification device, and blast machining method |
| EP2792412A4 (en) * | 2011-12-12 | 2016-04-20 | Ube Industries | Mixture separation method and separation device |
| JP6024316B2 (en) | 2012-09-07 | 2016-11-16 | 株式会社リコー | Toner manufacturing apparatus and toner manufacturing method |
| JP6044204B2 (en) * | 2012-09-07 | 2016-12-14 | 株式会社リコー | Foreign matter separation device and foreign matter separation method |
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| CN103537370A (en) * | 2013-11-01 | 2014-01-29 | 张家港市昊天金属科技有限公司 | Iron sorting device for aluminum alloy production process |
| CN104162482A (en) * | 2014-08-08 | 2014-11-26 | 姜大志 | Deironing and grading method for powder body |
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| CN105618253A (en) * | 2016-03-24 | 2016-06-01 | 陈勇 | Device for magnetite separation by impacting ore sand through paraboloid |
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| CN111451141A (en) * | 2020-04-17 | 2020-07-28 | 新疆火焰沙健康科技有限公司 | Separator for separating tourmaline and black tourmaline components rich in iron |
| CN114433353B (en) * | 2021-12-22 | 2024-01-30 | 长安大学 | Hierarchical magnetic separation device based on iron tailing grade |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2011049229A1 (en) | 2011-04-28 |
| JP5573546B2 (en) | 2014-08-20 |
| KR20120068030A (en) | 2012-06-26 |
| JP2011104582A (en) | 2011-06-02 |
| KR101398114B1 (en) | 2014-05-23 |
| CN102574126A (en) | 2012-07-11 |
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