CN102631987A - Magnetic system structure of large vertical ring magnetic separator - Google Patents
Magnetic system structure of large vertical ring magnetic separator Download PDFInfo
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- CN102631987A CN102631987A CN2012101339786A CN201210133978A CN102631987A CN 102631987 A CN102631987 A CN 102631987A CN 2012101339786 A CN2012101339786 A CN 2012101339786A CN 201210133978 A CN201210133978 A CN 201210133978A CN 102631987 A CN102631987 A CN 102631987A
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Abstract
The invention discloses a magnetic system structure of a large vertical ring pulsating magnetic separator. The magnetic system structure comprises an upper yoke, a middle yoke, an exciting coil, a lower yoke and a swing link, wherein the lower yoke is composed of a left lower yoke, a middle magnetic head yoke, a right lower yoke and a bottom shell yoke; the middle magnetic head yoke comprises a plurality of blocks in along front and back directions; a groove is arranged on the lower end face of the middle magnetic head yoke; spandrel girder yokes are fixed at the lower ends of the two sides of the middle magnetic head yoke; the bottom shell yoke comprises two base plates and two vertical plates; the lower end of the middle magnetic head yoke is inserted between the two base plates; the two vertical plates are respectively and horizontally arranged in a gap at the lower part of the front end and the rear end of the middle magnetic head yoke; the upper lateral wall of the gap is supported on the upper end face of each vertical plate, and the left and right lower yokes recline against the left and right sides of the middle magnetic head yoke without a clearance and are located on the base plates. The combined lower yoke structure disclosed by the invention greatly shortens the volume and the weight of each component, greatly reduces processing, mounting and maintaining difficulties, and creates a condition for enlargement of the magnetic system structure.
Description
Technical field
The present invention relates to large-scale pulsating high gradient magnetic separator with vertical ring, the magnetic architecture on the especially large-scale vertical-ring magnetic separator.
Background technology
Steel and iron industry is one of important industry of national economy, and iron ore is the basic raw materials of steel and iron industry.The industrialization of current China, urbanization are accelerated development, and need to rely on a large amount of iron and steel raw materials to support, and need a large amount of iron ore resources to provide safeguard.Yet, because China's iron ore inefficiency of production makes the external interdependency of China's iron ore improve constantly.In recent years, China's iron ore import volume rapid growth: Chinese imported iron ore stone was 2.08 hundred million tons in 2004, and imported iron ore stone up was 6.28 hundred million tons in 2009, externally interdependency by 2004 41% bring up to 2009 69%.In addition; Three big ferrolite supply merchant fresh water river valleys, the world, make every effort to open up with BHP Billiton and rely on its relative monopoly position; Make the passive always imported iron ore stone price of accepting high enterprise of China; The fine ore C.I.F. in 2009 63.5% is by 74.0 dollars/ton rise to 2010 128 dollars/ton, and in January, 2011, iron ore price was advanced triumphantly, and had broken through 151 dollars/ton.Externally the height of interdependency enterprise and imported iron ore stone price is soaring year by year, makes China Steel already be absorbed in unprecedented cost predicament, and the profit of the whole industry only has about 2%.Therefore strengthen domestic iron ore deposit exploitation dynamics, improve the degree of self-sufficiency in homemade ore deposit, become China Steel and already tackled the not cost crisis of broken height enterprise, existence, development key in face of crisis.
Yet the Chinese iron ore resource overwhelming majority is a lean ore, and the average grade that lean ore accounts for 97.5%, 2003 year Chinese homemade iron ore of gross reserves is 40%, but has reduced at present about 25%, and the iron ore grade reduces will raise Chinese iron ore production cost undoubtedly.Therefore, Chinese bargh must pass through technology and management innovation, adopts advanced, large-scale mining, preparation equipment efficiently, significantly improves state-owned iron ore output, and significantly reduces the iron ore production cost, just might survival and development in the competition in future.
The explored iron ore reserves in the whole world are 400,000,000,000 tons; Wherein hematite (weakly magnetic iron ore) accounts for 1/2nd; Along with mineral products are exploited in a large number, rich ore is fewer and feweri unprecedented soaring with iron ore price, and the poor iron ore that some content originally are not high is beginning large-scale development; The maximization of mining processing industry, the poor refinement of ore, the complicated development trend that will become international; Thereby the ore dressing enterprise large-scale weak magnetite separation equipment that presses for that treating capacity is big, beneficiating efficiency is high, equipment dependability is high, power consumption is low and production cost is low, to reduce production costs, improve enterprise competitiveness.
The SLon pulsating high gradient magnetic separator with vertical ring (patent No. ZL86106144.6) of the early stage development of applicant is used to sort weakly magnetic ores such as hematite; Has excellent dressing performance; But the type treating capacity of having developed at present is less, can not satisfy the demand in large-scale and ultra-large type ore dressing plant both at home and abroad.The treating capacity of the maximum magnetic separator that domestic other magnetic separator manufacturers produce also is merely 70 tons/h, can't satisfy the demand in large-scale and ultra-large type ore dressing plant equally both at home and abroad.
Develop large-scale pulsating high gradient magnetic separator with vertical ring, improve its ore treatment ability, help to reduce the iron ore concentrate production cost, reduce the power consumption of the unit's of sorting ton ore, and can practice thrift the factory building land used, reduce running cost.But; The maximization of pulsating high gradient magnetic separator with vertical ring equipment need overcome many technical problems, wherein, and as the magnetic architecture of magnetic separator most important components; Maximization along with equipment; Its weight and size also strengthen thereupon, and when the upright ring on the magnetic separator was increased to 4m, the weight of magnetic architecture will be up to more than 260 tons; If so huge magnetic system adopts structural shape in the past cause very big difficulty will for processing, installation, the maintenance of equipment again, thereby need under the prerequisite that guarantees its performance, design again.
Summary of the invention
For satisfying the current demand of equipment enlarging; The object of the present invention is to provide a kind of novel pulsating high gradient magnetic separator with vertical ring magnetic architecture; This magnetic architecture has also that power consumption is low, apparatus processing, installation, maintenance be easy to advantage when improving the magnetic separator disposal ability greatly.
For realizing above-mentioned purpose, the large-scale upright ring pulsation magnetic separator magnetic architecture of the present invention comprises left and right upper yoke from the top down successively, left and right middle iron yoke, and magnetizing coil and lower yoke are isolated by swing link between the background magnetic field zone in magnetizing coil and the magnetic system; Wherein, Lower yoke is combined by left lower yoke, middle magnetic head iron yoke, right lower yoke, drain pan iron yoke; Middle magnetic head iron yoke comprises some that arrange along fore-and-aft direction; Some dock and are inter-connected via a bolt joint fixing in aggregates each other, and the lower surface of middle magnetic head iron yoke is provided with the groove that extends along its fore-and-aft direction center line, and the transverse notch width of this groove is greater than the slot part width; And in that to guarantee that left and right sides magnetic head iron yoke cross section is unlikely to the cross sectional dimensions of magnetically saturated situation low groove big as far as possible; Lower end, middle magnetic head iron yoke both sides is fixed with the spandrel girder iron yoke that fore-and-aft direction extends respectively, and this spandrel girder iron yoke is being provided with fin back to middle magnetic head iron yoke one side, and drain pan iron yoke comprises separated between left and right two base plates that are provided with and two risers that are separately fixed at the front-end and back-end of two base plates; The lower end of middle magnetic head iron yoke is inserted between said two base plates; Fin on two spandrel girder iron yokes is supported on respectively on two base plates, and the lower surface of middle magnetic head iron yoke flushes and be connected into mutually continuous surface with the lower surface of base plate, in the breach that magnetic head iron yoke front and back end lower shape matched in the middle of said two risers crouched respectively; The breach upper side wall is supported on the riser upper surface; The outer surface of riser fore-and-aft direction flushes and is connected into mutually continuous surface with the outer surface of middle magnetic head iron yoke of its top, and left and right lower yoke does not have the gap magnetic head iron yoke left and right sides, the centre face that reclines respectively and is seated on the said base plate, and two spandrel girder iron yokes do not have the gap with adjacent each iron yoke respectively and join.
Further; Magnetic head iron yoke is formed by forward and backward two butt joints in the middle of said; Two magnetic head iron yokes interconnect fixing at the place of engaging through two groups of bolts that are provided with near lower edge on it respectively; Wherein, being arranged on forward and backward two magnetic head iron yokes near the bolt of lower edge extends downwardly on the connecting plate in the said groove.
Further, the cross section of said groove is shaped as isosceles trapezoid.
Further, said base plate and said riser in the said drain pan iron yoke are rectangular slab, and two riser right ends flush with the outer side edges of two base plate left and right directions respectively.
Magnetic system is one of magnetic separator most important parts, and its cost accounts for more than 60% of main frame.The magnetic architecture not only is related to technical parameters such as field intensity, leakage field, power consumption, and whether be related to the ore pulp path smooth, problems such as the quality of mineral processing index.Therefore, the design of magnetic system is a key of making the high-quality magnetic separator, need take all factors into consideration many factors such as the sorting space of equipment, excitatory power consumption, background field intensity, dressing performance, difficulty of processing, material consumption, installation, maintenance, also will prevent the change shake simultaneously.
The upright ring diameter of magnetic separator is increased to 4m, and the complete machine weight of magnetic separator will be near 380 tons, and magnetic wherein is that weight will if the magnetic architecture is not improved, will make its processing, transportation, installation, maintenance all be difficult to carry out up to more than 260 tons.
The present invention is satisfying the background magnetic field requirement of strength, is reducing under the situation of leakage field to greatest extent; Adopted knockdown lower yoke structure, at first lower yoke has been divided into left and right lower yoke and three main bulks of middle magnetic head iron yoke, middle magnetic head iron yoke wherein is cut into forward and backward two again; And then utilize drain pan iron yoke that the combination of three bulks is in aggregates; Simultaneously, be the stable support of magnetic head iron yoke on drain pan iron yoke in the middle of guaranteeing, also be provided with the spandrel girder iron yoke of supplemental support effect specially.Combined type lower yoke structure of the present invention has been dwindled the volume and weight of each building block greatly, greatly reduces the difficulty of processing, installation, maintenance, for condition has been created in the maximization of magnetic architecture.
The present invention, is unlikely to again to reach under the magnetically saturated situation guaranteeing that iron yoke cross-sectional area is enough according to the characteristics of magnetic line of force conduction in the magnetic system, has also adopted the measure of magnetic head iron yoke weight in the middle of alleviating first.Through on middle magnetic head iron yoke lower surface, groove being set, both reduced the use amount of magnetic head iron conjugated material, can not make magnetic head iron yoke part magnetic saturation occur again.Magnetic separator with upright ring diameter 4m is an example, and about 50 tons of the weight of middle magnetic head iron yoke through groove is set, can be saved about 2 tons of iron conjugated materials.
Adopt the magnetic separator of the upright ring diameter 4m of magnetic architecture of the present invention, disposal ability can reach 350-550T/h during the platform of its dried ore deposit.
Description of drawings
Fig. 1 (a) and (b) are existing pulsating high gradient magnetic separator with vertical ring magnetic architecture sketch map;
Fig. 2 (a) and (b) are magnetic architecture sketch map of the present invention;
Fig. 3 (a) is the cutaway view of middle magnetic head iron yoke along the fore-and-aft direction center line;
Fig. 3 (b) is an A-A view among Fig. 3 (a);
Fig. 4 (a) is a drain pan iron yoke structure sketch map;
Fig. 4 (b) is a B-B view among Fig. 4 (a).
Among the figure: 1 is upper yoke, and 2 is middle iron yoke, and 3 is magnetizing coil, and 4 is swing link, and 5 is lower yoke; 6 is the background magnetic area, and 11 is left upper yoke, and 12 is right upper yoke, and 21 is iron yoke in the left side, and 22 is iron yoke in the right side; 51 is left lower yoke, and 52 is middle magnetic head iron yoke, and 53 is right lower yoke, and 54 is drain pan iron yoke, and 52-1 is anterior magnetic head iron yoke; 52-2 is a rear portion magnetic head iron yoke, and 52-3 is a connecting bolt, and 52-4 is a groove, and 52-5 is the ore pulp runner, and 52-6 is a breach; 52-7 is a spandrel girder iron yoke, and 52-8 is a fin, and 52-9 is the exhaust passage, and 54-1 is a base plate, and 54-2 is a riser.
The specific embodiment
Specify the present invention below in conjunction with accompanying drawing.
Shown in Fig. 2 (a), Fig. 2 (b), magnetic architecture of the present invention comprises left upper yoke 11 from the top down successively, right upper yoke 12; Iron yoke 21 in the left side; Iron yoke 22 in the right side, magnetizing coil 3 and lower yoke 5 are isolated by swing link 4 between the background magnetic field zone 6 in magnetizing coil 3 and the magnetic system; Wherein, lower yoke 5 is combined by left lower yoke 51, middle magnetic head iron yoke 52, right lower yoke 53, drain pan iron yoke 54.
Shown in Fig. 3 (a), Fig. 3 (b); Middle magnetic head iron yoke 52 is formed by forward and backward two butt joints; Anterior magnetic head iron yoke 52-1 and rear portion magnetic head iron yoke 52-2 interconnect fixing at the place of engaging through two groups of bolt 52-3 that are provided with near lower edge on it respectively; Wherein, being arranged on forward and backward two magnetic head iron yokes near the bolt 52-3 of lower edge extends downwardly on the connecting plate among the groove 52-4.
The lower surface of middle magnetic head iron yoke 52 is provided with the groove 52-4 that extends along its fore-and-aft direction center line, the cross section of this groove 52-4 be shaped as isosceles trapezoid, referring to Fig. 3 (b).According to the conducting path of the magnetic line of force in the magnetic system, guaranteeing that left and right sides magnetic head iron yoke cross section is unlikely under the magnetically saturated situation, the cross sectional dimensions of groove 52-4 is big as far as possible, referring to Fig. 2 (b).
Lower end, middle magnetic head iron yoke 52 both sides is fixed with the spandrel girder iron yoke 52-7 that fore-and-aft direction extends respectively, and two spandrel girder iron yoke 52-7 are provided with fin 52-8 back to middle magnetic head iron yoke 52 1 sides.
Drain pan iron yoke 54 comprises separated between left and right two base plate 54-1 that are provided with and two riser 54-2 that are separately fixed at the front-end and back-end of two base plates; Base plate 54-1 and riser 54-2 are rectangular slab; And two riser right ends flush with the outer side edges of two base plate left and right directions respectively.
The lower end of middle magnetic head iron yoke 52 is inserted between two base plate 54-1 of drain pan iron yoke 54; Fin 52-8 on two spandrel girder iron yoke 52-7 is supported on respectively on two base plate 54-1; Among the breach 52-6 that magnetic head iron yoke 52 front and back end lower shapes matched in the middle of two riser 54-2 on the drain pan iron yoke 54 then crouched respectively, the upper side wall of breach 52-6 is supported on the upper surface of riser 54-2.The lower surface of middle magnetic head iron yoke 52 flushes and is connected into mutually continuous surface with the lower surface of base plate 54-1, and the outer surface of riser 54-2 fore-and-aft direction flushes and be connected into mutually continuous surface with the outer surface of the middle magnetic head iron yoke 52 of its top.Left side lower yoke 51 and right lower yoke 53 seamlessly join with the left and right sides face of middle magnetic head iron yoke 52 respectively and are seated on two base plate 54-1 of drain pan iron yoke 54, and two spandrel girder iron yoke 52-7 on the middle magnetic head iron yoke 52 do not have the gap with base plate 54-1 and left and right lower yoke respectively simultaneously and join.
Each assembly of lower yoke 5 among the present invention is processing separately all, and during assembling, front and back two parts of middle magnetic head iron yoke 52 lift by crane respectively, and is in aggregates with bolt 52-3 connection again after in place.
The present invention has guaranteed the globality of the lower yoke after the combination through drain pan iron yoke 54 is set, and drain pan iron yoke 54 is also born the effect of the conduction magnetic line of force when playing the support and connection effect.
Referring to Fig. 2 (b), except the ore pulp runner is set, also be provided with the exhaust passage on upper yoke and the middle magnetic head iron yoke, the exhaust passage is positioned at the front portion, and the ore pulp runner is positioned at the rear portion.Consider from angle easy to process; Middle magnetic head iron yoke 52 in the foregoing description is divided into two of front and back according to tandem exhaust passage on it and ore pulp runner; Exhaust passage 52-9 is positioned on the anterior magnetic head iron yoke 52-1, and ore pulp runner 52-5 is positioned on the magnetic head iron yoke 52-2 of rear portion.
Certainly, magnetic head iron yoke was a kind of optimal way of the present invention in the middle of two magnetic head iron yokes were formed before and after adopting, and in addition, middle magnetic head iron yoke also can be made up of the polylith of tandem docking.
In addition; The purpose that groove 52-4 is set is under the situation that guarantees the cross-sectional area on the magnetic head iron yoke magnetic line of force conducting path, to reduce the iron yoke to use material, alleviates iron yoke weight, so; Cross section in above-mentioned example is the groove of isosceles trapezoid, also can adopt other suitable shapes.
Claims (4)
1. one kind large-scale upright ring pulsation magnetic separator magnetic architecture comprises left and right upper yoke from the top down successively, left and right middle iron yoke, and magnetizing coil and lower yoke are isolated by swing link between the background magnetic field zone in magnetizing coil and the magnetic system; It is characterized in that; Said lower yoke is combined by left lower yoke, middle magnetic head iron yoke, right lower yoke, drain pan iron yoke; Middle magnetic head iron yoke comprises some that arrange along fore-and-aft direction; Some dock and are inter-connected via a bolt joint fixing in aggregates each other; The lower surface of middle magnetic head iron yoke is provided with the groove that extends along its fore-and-aft direction center line; The transverse notch width of this groove is greater than the slot part width, and in that to guarantee that left and right sides magnetic head iron yoke cross section is unlikely to the cross sectional dimensions of magnetically saturated situation low groove big as far as possible, lower end, middle magnetic head iron yoke both sides is fixed with the spandrel girder iron yoke that fore-and-aft direction extends respectively; This spandrel girder iron yoke is being provided with fin back to middle magnetic head iron yoke one side; Drain pan iron yoke comprises that between left and right the lower end of middle magnetic head iron yoke is inserted between said two base plates at a distance from two base plates that are provided with and two risers that are separately fixed at the front-end and back-end of two base plates, and the fin on two spandrel girder iron yokes is supported on respectively on two base plates; The lower surface of middle magnetic head iron yoke flushes and is connected into mutually continuous surface with the lower surface of base plate; In the breach that magnetic head iron yoke front and back end lower shape matched in the middle of said two risers crouched respectively, the breach upper side wall is supported on the riser upper surface, and the outer surface of riser fore-and-aft direction flushes and be connected into mutually continuous surface with the outer surface of the middle magnetic head iron yoke of its top; Left and right lower yoke do not have respectively the gap recline in the middle of magnetic head iron yoke left and right sides face be seated on the said base plate, two spandrel girder iron yokes do not have the gap with adjacent each iron yoke respectively and join.
2. the magnetic architecture shown in claim 1; It is characterized in that; Magnetic head iron yoke is formed by forward and backward two butt joints in the middle of said; Two magnetic head iron yokes interconnect fixing through two groups of bolts that are provided with near lower edge on it respectively at the place of engaging, wherein, be arranged on forward and backward two magnetic head iron yokes near the bolt of lower edge and extend downwardly on the connecting plate in the said groove.
3. the magnetic architecture shown in claim 1 is characterized in that, the cross section of said groove be shaped as isosceles trapezoid.
4. the magnetic architecture shown in claim 1 is characterized in that, said base plate and said riser in the said drain pan iron yoke are rectangular slab, and two riser right ends flush with the outer side edges of two base plate left and right directions respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210133978 CN102631987B (en) | 2012-05-03 | 2012-05-03 | Magnetic system structure of large vertical ring magnetic separator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210133978 CN102631987B (en) | 2012-05-03 | 2012-05-03 | Magnetic system structure of large vertical ring magnetic separator |
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| CN102631987A true CN102631987A (en) | 2012-08-15 |
| CN102631987B CN102631987B (en) | 2012-12-19 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4874508A (en) * | 1988-01-19 | 1989-10-17 | Magnetics North, Inc. | Magnetic separator |
| US5462173A (en) * | 1994-03-04 | 1995-10-31 | Eriez Manufacturing Company | Rotating drum magnetic separator |
| CN1799701A (en) * | 2005-12-30 | 2006-07-12 | 赣州金环磁选设备有限公司 | Dry type vibratory high-gradient magnetic separator |
| CN201220185Y (en) * | 2008-06-25 | 2009-04-15 | 山东华特磁电科技股份有限公司 | Forced-oil-cooled vertical ring high-gradient magnetic separation machine |
| CN202087409U (en) * | 2011-05-04 | 2011-12-28 | 赣州金环磁选设备有限公司 | Permanent magnetic drum-type rolling bearing magnetic separator |
-
2012
- 2012-05-03 CN CN 201210133978 patent/CN102631987B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4874508A (en) * | 1988-01-19 | 1989-10-17 | Magnetics North, Inc. | Magnetic separator |
| US5462173A (en) * | 1994-03-04 | 1995-10-31 | Eriez Manufacturing Company | Rotating drum magnetic separator |
| CN1799701A (en) * | 2005-12-30 | 2006-07-12 | 赣州金环磁选设备有限公司 | Dry type vibratory high-gradient magnetic separator |
| CN201220185Y (en) * | 2008-06-25 | 2009-04-15 | 山东华特磁电科技股份有限公司 | Forced-oil-cooled vertical ring high-gradient magnetic separation machine |
| CN202087409U (en) * | 2011-05-04 | 2011-12-28 | 赣州金环磁选设备有限公司 | Permanent magnetic drum-type rolling bearing magnetic separator |
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| CN102631987B (en) | 2012-12-19 |
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Address after: 341000 Jiangxi province Zhanggong District of Ganzhou City, Shahe Industrial Park Patentee after: Ganzhou Jinhuan magnetic separation technology and Equipment Co.,Ltd. Address before: 341000 Jiangxi province Zhanggong District of Ganzhou City, Shahe Industrial Park Patentee before: SLON MAGNETIC SEPARATOR Ltd. |
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