CN104689907A - Magnetic-gathering medium, magnetic-gathering medium box and magnetic-gathering medium column for magnetic separator and application thereof - Google Patents
Magnetic-gathering medium, magnetic-gathering medium box and magnetic-gathering medium column for magnetic separator and application thereof Download PDFInfo
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- CN104689907A CN104689907A CN201510076770.9A CN201510076770A CN104689907A CN 104689907 A CN104689907 A CN 104689907A CN 201510076770 A CN201510076770 A CN 201510076770A CN 104689907 A CN104689907 A CN 104689907A
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Abstract
The invention discloses a magnetic-gathering medium, a magnetic-gathering medium box and a magnetic-gathering medium column for a magnetic separator and application of the magnetic-gathering medium, the magnetic-gathering medium box and the magnetic-gathering medium column. The magnetic-gathering medium for the magnetic separator is processed to be in a strip shape, a column shape or a ring shape, and the cross section of the magnetic-gathering medium is in an oval shape; the magnetic-gathering medium box mainly comprises non-magnetic metal plates and the magnetic-gathering medium, wherein the magnetic-gathering medium is processed into strip-shaped or column-shaped magnetic-gathering medium rods, and the plurality of magnetic-gathering medium rods are distributed between the two non-magnetic metal plates at intervals; the magnetic-gathering medium column is mainly formed by overlapping multiple layers of magnetic-gathering medium ring systems up and down, the magnetic-gathering medium ring systems are formed by concentrically sleeving magnetic-gathering medium rings from big to small, the magnetic-gathering medium rings are prepared from the magnetic-gathering medium, and the magnetic-gathering medium rings and the magnetic-gathering medium ring systems are respectively separated from one other. The magnetic-gathering medium, the magnetic-gathering medium box and the magnetic-gathering medium column can be used in the magnetic separator to recycle fine-particle magnetic minerals; when the magnetic-gathering medium box is used, the ellipse long axis directions of the magnetic-gathering medium rods are parallel to the background magnetic field direction of the magnetic separator; the magnetic-gathering medium box and the magnetic-gathering medium column have the advantages of low cost, low energy consumption, low probability of blocking, capability of producing high gradient magnetic fields and the like.
Description
Technical field
The invention belongs to the ore dressing field in Mineral Engineering, particularly relate to a kind of magnetic matrix for magnetic separator and composition product thereof and application.
Background technology
Along with continually developing of mineral resources, the iron ore resource of high-grade and Yi Xuan reduces day by day, and steel industry is more and more paid attention to utilizing based on the Efficient Development of the thin and poor weak magnetism ore resources of bloodstone, limonite and siderite.High-gradient Magnetic selecting technology is the effective means of process microfine weak magnetic mineral, plays more next important effect in the development and utilization of mineral resources.Magnetizing mediums is the key components of high gradient magnetic separator, and the magnetic signature of magnetizing mediums often determines the quality of the separation performance of high gradient magnetic separator, and main magnetizing mediums type has ball medium, excellent medium, tooth plate medium, expanded metal lath medium and steel wool medium etc.
Magnetic field force needed for effective recovery of fine grained magnetic mineral is larger, and the approach improving magnetic field force has two kinds: increasing magnetic field and magnetic field gradient.Due to square being directly proportional of magnetic separator energy consumption and magnetic field intensity, improving magnetic field intensity and energy consumption can be made significantly to increase; And highfield often causes mineral to be reunited, mechanical entrainment is serious, reduces concentrate grade; In addition, be subject to the restriction of the saturation magnetization of magnetic separator magnetic circuit design and material therefor, the background magnetic field intensity of magnetic separator also can not infinitely improve.Therefore, be more consider to improve magnetic force suffered by mineral by improving magnetic field gradient.
Magnetizing mediums mainly tooth plate medium, expanded metal lath and the excellent medium that current ore dressing field uses.Tooth plate medium magnetic field gradient is comparatively large, but the magneticaction degree of depth is little, and easily blocks.The mesh medium of tight filling can produce larger magnetic field gradient, has facilitation to recovery fine grained mineral, but owing to there is " magnet short-cut path " phenomenon between medium and extremely susceptible to plugging problem, the scope of application is very limited.Rod medium is widely used in pulsating high gradient magnetic separator, efficiently solve the problem of filter medium clogging, but the magnetic field gradient that excellent medium produces is limited, in magnetic circuit, the excessive energy consumption that causes of magnetic resistance is higher, along with continually developing of mineral resources, the mineral granularity that need process is more and more thinner, and the deficiency of excellent media separation mineral also highlights day by day.201110306909.6 a number Chinese patent discloses a kind of equilateral rhombus medium, its magnetic field gradient is higher than pole medium, and there is no " magnet short-cut path " phenomenon, but the high magnetic field gradients of this diamond-shaped cross-section medium concentrates on the sharp corner of diamond-shaped cross-section, the depth of interaction of highfield power is little, less to the trapping range of fine grained mineral.In addition, also has the magnetizing mediums that some shapes are very special, if cross sectional shape is polygon or circumferential profile of tooth and other complicated shapes, although these magnetizing mediums also can produce larger magnetic field force, but because shape is too complicated, processing and manufacturing difficulty is large, and cost is high, is difficult to large-scale application aborning.
Summary of the invention
Technical problem to be solved by this invention is, overcome the deficiency and defect mentioned in above background technology, there is provided that a kind of production cost is low, energy consumption is low, not easily blocking and the magnetic matrix for magnetic separator of high magnetic field gradients, magnetic matrix box and magnetic matrix post can be produced, also correspondingly provide the application of product in magnetic separator such as this magnetic matrix box, effectively to improve the separation performance of magnetic separator, magnetic separator energy consumption can also be reduced simultaneously.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of magnetic matrix for magnetic separator, and described magnetic matrix is processed to strip, column or ring-type, and the shape of cross section of described magnetic matrix is oval.It can be engineering pure iron or magnetic stainless steel etc. that the magnetic matrix of oval cross section of the present invention makes material.
In above-mentioned magnetic matrix, preferred: the major axis of described ellipse and the length ratio of minor axis are 1.2 ~ 3.
As a total technical conceive, the present invention also provides a kind of magnetic matrix box for magnetic separator, described magnetic matrix box is formed primarily of the magnetic matrix of non-magnetic metallic plate (or other sheet materials non-magnetic) and the invention described above, described magnetic matrix is processed to the magnetic matrix rod of strip or column, and the magnetic matrix rod described in many is intervally arranged between two pieces of non-magnetic metallic plates.
In above-mentioned magnetic matrix box, preferably the first scheme is: described magnetic matrix rod extends in the horizontal direction, and the layout that is parallel to each other between each magnetic matrix rod; Two ends difference affixed (preferred weld or riveted joint) of every root magnetic matrix rod are on described two pieces of non-magnetic metallic plates, and the axes normal of every root magnetic matrix rod is in the plane at non-magnetic metallic plate place.This magnetic matrix rod can uniform arrangement or the arrangement of subregion density between two pieces of non-magnetic metallic plates.
In above-mentioned magnetic matrix box, preferred first scheme is: described magnetic matrix rod vertically extends, and the axis being parallel of every root magnetic matrix rod is in the plane at non-magnetic metallic plate place, and the layout that is parallel to each other between each magnetic matrix rod; The two ends of every root magnetic matrix rod are fixed on a connection piece respectively; This connector has been connected many magnetic matrix rods, and the two ends of this connector are fixed on two pieces of described non-magnetic metallic plates respectively.Preferred, vertically towards magnetic matrix rod can first be fixed in a metal framework, then by metal framework welding or be fixed between two pieces of non-magnetic metallic plates by structures such as grooves.This vertically towards magnetic matrix rod general evenly distributed between two pieces of non-magnetic metallic plates.
In above-mentioned magnetic matrix box, preferably, the pack completeness of described magnetic matrix rod in magnetic matrix box is 15% ~ 50%.
In above-mentioned magnetic matrix box, the length of magnetic matrix rod and the size of non-magnetic metallic plate generally can be determined according to the size in sorting space.
As a total technical conceive, the present invention also provides a kind of magnetic matrix post for magnetic separator, described magnetic matrix post superposes composition up and down primarily of the magnetic matrix ring system of multilayer, the magnetic matrix ring system of every one deck forms by multiple descending magnetic matrix ring is sheathed with one heart, each magnetic matrix ring is made up of the magnetic matrix described in the claim 1 or 2 being processed into ring-type, each magnetic matrix ring is spaced from each other a distance, and the magnetic matrix ring system of every layer is spaced a distance up and down.
As a total technical conceive, the present invention also provides the first magnetic matrix box application in magnetic separator above-mentioned, and described magnetic separator is the magnetic separator of vertical magnetic system, is installed by described magnetic matrix box and is applied to this magnetic separator to reclaim fine grained magnetic mineral; When application is installed, the oval cross section major axis bearing of trend of magnetic matrix rod in the described magnetic matrix box mode parallel with this magnetic separator background magnetic field direction or magnetic line of force direction is made to be positioned in the sorting chamber of magnetic separator by this magnetic matrix box; During magnetic separator work, control flow of slurry moves the bearing of trend that direction is parallel to oval cross section major axis.
As a total technical conceive, the present invention also provides the application of above-mentioned the second magnetic matrix box in magnetic separator, and described magnetic separator is the magnetic separator of horizontal magnetic system, is installed by described magnetic matrix box and is applied to this magnetic separator to reclaim fine grained magnetic mineral; When application is installed, make the transverse bearing of trend of magnetic matrix rod in the described magnetic matrix box mode parallel with this magnetic separator background magnetic field direction or magnetic line of force direction be positioned in the sorting chamber of magnetic separator by this magnetic matrix box, during magnetic separator work, ore pulp flow direction is vertical with oval cross section direction.
In above-mentioned application, preferred: described magnetic separator is intensity magnetic separator or high gradient magnetic separator.
Compared with prior art, the invention has the advantages that:
1. adopt the magnetic matrix of this elliptical shape in cross-section of the present invention can obtain the magnetic field gradient larger than conventional positive circular section magnetic matrix, and " magnet short-cut path " phenomenon between medium, can not be there is;
2. the magnetic matrix of elliptical shape in cross-section of the present invention easily manufactures, the magnetic matrix box adopting this magnetic matrix to be made into or magnetic matrix post have that production cost is low, not easily blocking and can produce the advantage of high magnetic field gradients, the pole medium that its highfield power depth of interaction is more conventional or diamond-shaped cross-section medium larger, larger to the trapping range of fine grained mineral, thus be more conducive to reclaiming fine grained magnetic mineral, improve mineral recovery rate.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is circular section magnetic matrix rod magnetized magnetic figure in magnetic field.
Fig. 2 is magnetic matrix rod magnetized magnetic figure in magnetic field of oval cross section of the present invention.
Fig. 3 is the structural representation of magnetic matrix box in the embodiment of the present invention 1.
Fig. 4 is the structural representation of magnetic matrix box in the embodiment of the present invention 2.
Fig. 5 is the structural representation of magnetic matrix box in the embodiment of the present invention 3.
Fig. 6 is the exterior appearance figure of single magnetic matrix rod in the embodiment of the present invention 1,2.
Fig. 7 is the schematic diagram that the magnetic matrix box in the embodiment of the present invention 1 installs when applying in magnetic separator.
Fig. 8 is the schematic diagram that the magnetic matrix box in the embodiment of the present invention 2 installs when applying in magnetic separator.
Fig. 9 is the schematic diagram that the magnetic matrix box in the embodiment of the present invention 3 installs when applying in magnetic separator.
Marginal data
1, magnetic matrix rod; 2, non-magnetic metallic plate; 3, pitman; 4, magnetic matrix ring.
Detailed description of the invention
For the ease of understanding the present invention, hereafter will do to describe more comprehensively, meticulously to the present invention in conjunction with Figure of description and preferred embodiment, but protection scope of the present invention is not limited to following specific embodiment.
It should be noted that, when a certain element is described on " be fixed on, be fixed in, be connected to or be communicated in " another element, it can be directly fixing, affixed, connect or be communicated with on another element, also can be by other intermediate connectors indirectly fixing, affixed, connection or connection on another element.
Unless otherwise defined, hereinafter used all technical terms are identical with the implication that those skilled in the art understand usually.The object of technical term used herein just in order to describe specific embodiment is not be intended to limit the scope of the invention.
Unless otherwise specified, the various raw material used in the present invention and equipment etc. are all bought by market and are obtained or prepare by existing method.
Embodiment 1:
A magnetic matrix for magnetic separator of the present invention as shown in Figure 6, this magnetic matrix is processed to column, and the shape of cross section of this magnetic matrix is oval.
A kind of magnetic matrix box for magnetic separator of the present invention as shown in Figure 3, this magnetic matrix box is formed primarily of the magnetic matrix of non-magnetic metallic plate 2 and above-mentioned the present embodiment, the magnetic matrix of the present embodiment is the pillared magnetic matrix rod 1 of processing, and many magnetic matrix rods 1 are intervally arranged between two pieces of non-magnetic metallic plates 2.As shown in Figure 3, the magnetic matrix rod 1 of the present embodiment extends in the horizontal direction, and the layout that is parallel to each other between each magnetic matrix rod 1; The two ends of every root magnetic matrix rod 1 are fixed on two pieces of non-magnetic metallic plates 2 respectively, and the axes normal of every root magnetic matrix rod 1 is in the plane at non-magnetic metallic plate 2 place.In the present embodiment, magnetic matrix rod 1 be in 6 × 3 matrix arrangement be distributed between two pieces of non-magnetic metallic plates 2, and the lateral clearance of magnetic matrix rod 1 is 1mm, axial clearance is 2mm, the ratio of semi-minor axis length of its elliptic cross-section is 2: 1, and the major axis of elliptic cross-section is 4mm, and minor axis is 2mm.In the present embodiment, the pack completeness of magnetic matrix rod in magnetic matrix box is 19.625%.
As shown in Figure 7, be applied in magnetic separator by magnetic matrix box above-mentioned for the present embodiment, the magnetic separator of embody rule is the high gradient magnetic separator of a vertical magnetic system, is installed by the magnetic matrix box of the present embodiment and is applied in this magnetic separator to reclaim fine grained magnetic mineral; When application is installed, the oval cross section major axis bearing of trend of magnetic matrix rod 1 in the magnetic matrix box mode parallel with this magnetic separator background magnetic field direction is made to be positioned in the sorting chamber of magnetic separator by this magnetic matrix box; During magnetic separator work, the long axis direction of ore pulp flow direction and oval cross section is all parallel to background magnetic field direction.
Embodiment 2:
A magnetic matrix for magnetic separator of the present invention as shown in Figure 6, this magnetic matrix is processed to column, and the shape of cross section of this magnetic matrix is oval.
A kind of magnetic matrix box for magnetic separator of the present invention as shown in Figure 4, this magnetic matrix box is formed primarily of the magnetic matrix of non-magnetic metallic plate 2 and above-mentioned the present embodiment, the magnetic matrix of the present embodiment is the pillared magnetic matrix rod 1 of processing, and many magnetic matrix rods 1 are intervally arranged between two pieces of non-magnetic metallic plates 2.As shown in Figure 4, the magnetic matrix rod 1 of the present embodiment vertically extends, and the axis being parallel of every root magnetic matrix rod 1 is in the plane at non-magnetic metallic plate 2 place, and the layout that is parallel to each other between each magnetic matrix rod 1; The two ends of every root magnetic matrix rod 1 are fixed on a pitman 3 respectively; This pitman 3 has been connected in end many magnetic matrix rods 1, and the two ends of this pitman 3 are fixed on two pieces of non-magnetic metallic plates 2 respectively.In the present embodiment, magnetic matrix rod 1 be in 6 × 3 matrix arrangement be distributed between two pieces of non-magnetic metallic plates 2, and be arranged in same perpendicular pitman 3 form metal framework, the gap of adjacent two magnetic matrix rods 1 is 1mm; Between different metal framework, the gap of adjacent two magnetic matrix rods 1 is 1.5mm.The ratio of semi-minor axis length of the elliptic cross-section of magnetic matrix rod 1 is 2.5: 1, and the major axis of elliptic cross-section is 5mm, and minor axis is 2mm.In the present embodiment, the pack completeness of magnetic matrix rod in magnetic matrix box is 19.625%.
As shown in Figure 8, be applied in magnetic separator by magnetic matrix box above-mentioned for the present embodiment, the magnetic separator of embody rule is the high gradient magnetic separator of a horizontal magnetic system, is installed by the magnetic matrix box of the present embodiment and is applied in this magnetic separator to reclaim fine grained magnetic mineral; When application is installed, the oval cross section major axis bearing of trend of magnetic matrix rod 1 in the magnetic matrix box mode parallel with this magnetic separator background magnetic field direction is made to be positioned in the sorting chamber of magnetic separator by this magnetic matrix box; During magnetic separator work, ore pulp flow direction is perpendicular to the long axis direction of oval cross section and background magnetic field direction.
Embodiment 3:
A magnetic matrix for magnetic separator of the present invention as shown in Figure 5, this magnetic matrix is processed to ring-type, and the shape of cross section of this magnetic matrix is oval.
A kind of magnetic matrix post for magnetic separator of the present invention as shown in Figure 5, this magnetic matrix post superposes composition (the present embodiment is four layers) up and down primarily of the magnetic matrix ring system of multilayer, the magnetic matrix ring system of every one deck forms (the present embodiment is five) by multiple descending magnetic matrix ring 4 is sheathed with one heart, each magnetic matrix ring 4 is made up of the above-mentioned magnetic matrix being processed into ring-type, each magnetic matrix ring 4 is spaced from each other a distance, and the magnetic matrix ring system of every layer is spaced a distance up and down.In the present embodiment, the ratio of semi-minor axis length of the elliptic cross-section of magnetic matrix rod 1 is 2: 1, and the major axis of elliptic cross-section is 4mm, and minor axis is 2mm.
As shown in Figure 9, magnetic matrix post above-mentioned for the present embodiment is applied in periodic vertical magnetic system high gradient magnetic separator, to reclaim fine grained magnetic mineral; Due to the cylindrical space that this magnetic separator sorting space surrounds for magnetizing coil, when application is installed, the oval cross section major axis bearing of trend of magnetic matrix ring 4 in the magnetic matrix post mode parallel with this magnetic separator background magnetic field direction can be made to be positioned in the sorting chamber of this magnetic separator by this magnetic matrix post, and during magnetic separator work, ore pulp flow direction is parallel to long axis direction and the magnetic line of force direction of oval cross section.
For the technical scheme of the various embodiments described above, magnetic matrix rod magnetized magnetic line of force in magnetic field that we align circular cross-section and elliptic cross-section of the present invention does a contrast, and result as shown in Figure 1 and Figure 2.As seen from Figure 1, magnetic line of force comparatively dense near magnetic matrix rod upper and lower sides, the magnetic line of force intensive place magnetic field intensity is large, therefore the magnetic matrix rod of positive circular cross-section also can produce certain magnetic field intensity and magnetic field gradient (magnetic field intensity is with space length rate of change), because the magnetic field gradient produced is limited, going for larger magnetic field gradient can only reduce section radius, needs to reduce dielectric gap simultaneously, but such consequence then can produce serious blockage problem, be difficult to effective application.Fig. 2 is then elliptic cross-section magnetic matrix of the present invention rod magnetized magnetic figure in magnetic field, as seen from Figure 2, the magnetic line of force near the upper and lower end parts of elliptic cross-section magnetic matrix rod is more intensive compared with the circular section bar medium in Fig. 1, can produce larger magnetic field intensity and magnetic field gradient.Through analog computation, the magnetic field gradient produced near the magnetic matrix surface of elliptic cross-section is about 2 times of circular cross-section magnetic matrix rod magnetic field gradient, clearly, the recovery of fine-particle minerals will be more conducive to when such magnetic matrix is applied in magnetic separator.
The above embodiment of the present invention is only the concrete elaboration carried out know-why of the present invention and technical scheme, and the explanation of above embodiment is only applicable to help to understand core concept of the present invention, not limits the spirit and scope of the present invention.Without departing from the inventive concept of the premise, the various improvement that those of skill in the art make the technical scheme that the present invention relates to and modification, all should fall in the protection domain of the claims in the present invention.
Claims (10)
1. for a magnetic matrix for magnetic separator, described magnetic matrix is processed to strip, column or ring-type, it is characterized in that: the shape of cross section of described magnetic matrix is for oval.
2. magnetic matrix according to claim 1, is characterized in that: the major axis of described ellipse and the length ratio of minor axis are 1.2 ~ 3.
3. the magnetic matrix box for magnetic separator, it is characterized in that: described magnetic matrix box is formed primarily of the magnetic matrix described in non-magnetic metallic plate and claim 1 or 2, described magnetic matrix is processed to the magnetic matrix rod of strip or column, and the magnetic matrix rod described in many is intervally arranged between two pieces of non-magnetic metallic plates.
4. magnetic matrix box according to claim 3, is characterized in that: described magnetic matrix rod extends in the horizontal direction, and the layout that is parallel to each other between each magnetic matrix rod; The two ends of every root magnetic matrix rod are fixed on two pieces of described non-magnetic metallic plates respectively, and the axes normal of every root magnetic matrix rod is in the plane at non-magnetic metallic plate place.
5. magnetic matrix box according to claim 3, is characterized in that: described magnetic matrix rod vertically extends, and the axis being parallel of every root magnetic matrix rod is in the plane at non-magnetic metallic plate place, and the layout that is parallel to each other between each magnetic matrix rod; The two ends of every root magnetic matrix rod are fixed on a connection piece respectively; This connector has been connected many magnetic matrix rods, and the two ends of this connector are fixed on two pieces of described non-magnetic metallic plates respectively.
6. the magnetic matrix box according to claim 4 or 5, is characterized in that: the pack completeness of described magnetic matrix rod in magnetic matrix box is 15% ~ 50%.
7. the magnetic matrix post for magnetic separator, it is characterized in that: described magnetic matrix post superposes composition up and down primarily of the magnetic matrix ring system of multilayer, the magnetic matrix ring system of every one deck forms by multiple descending magnetic matrix ring is sheathed with one heart, each magnetic matrix ring is made up of the magnetic matrix described in the claim 1 or 2 being processed into ring-type, each magnetic matrix ring is spaced from each other a distance, and the magnetic matrix ring system of every layer is spaced a distance up and down.
8. the application of magnetic matrix box as claimed in claim 4 in magnetic separator, is characterized in that: described magnetic separator is the magnetic separator of vertical magnetic system, is installed by described magnetic matrix box and is applied to this magnetic separator to reclaim fine grained magnetic mineral; When application is installed, the oval cross section major axis bearing of trend of magnetic matrix rod in the described magnetic matrix box mode parallel with this magnetic separator background magnetic field direction or magnetic line of force direction is made to be positioned in the sorting chamber of magnetic separator by this magnetic matrix box; Control flow of slurry during magnetic separator work to move direction and be parallel to oval cross section long axis direction.
9. the application of magnetic matrix box as claimed in claim 5 in magnetic separator, is characterized in that: described magnetic separator is the magnetic separator of horizontal magnetic system, is installed by described magnetic matrix box and is applied to this magnetic separator to reclaim fine grained magnetic mineral; When application is installed, make the transverse bearing of trend of magnetic matrix rod in the described magnetic matrix box mode parallel with this magnetic separator background magnetic field direction or magnetic line of force direction be positioned in the sorting chamber of magnetic separator by this magnetic matrix box, during magnetic separator work, ore pulp flow direction is vertical with oval cross section direction.
10. application according to claim 8 or claim 9, is characterized in that: described magnetic separator is intensity magnetic separator or high gradient magnetic separator.
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