CN2698453Y - Combination type flashing magnetic field selection machine - Google Patents
Combination type flashing magnetic field selection machine Download PDFInfo
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- CN2698453Y CN2698453Y CN 200320102563 CN200320102563U CN2698453Y CN 2698453 Y CN2698453 Y CN 2698453Y CN 200320102563 CN200320102563 CN 200320102563 CN 200320102563 U CN200320102563 U CN 200320102563U CN 2698453 Y CN2698453 Y CN 2698453Y
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Abstract
The utility model discloses a wet-type selection device, which designs a combination type flashing magnetic field selection machine by utilizing the mineral selecting principle of the magnetic coagulation gravity-flow concentrator and the magnetic dewatering tank. The combination type flashing magnetic field selection machine comprises a cylinder, an ore feeder, an overflow trough, a water feeder and an ore discharging valve. The combination type flashing magnetic field selection machine is characterized in that the inner wall of the cylinder is provided with a plurality of sets of magnet coils from top to bottom at intervals. The lower part of the water feeder is provided with permanent magnets which are distributed evenly along the circumference, and the homopolar surface points to the center of circle. The uppermost magnet coil supplies electricity continuously, and the lower magnet coils supply electricity intermittently from top to bottom in sequence. The upper part of the cylinder is provided with the overflow trough, and a pressure sensing device is installed on the overflow trough. The lower part of the cylinder is provided with the ore discharging valve connected with a motor operator. With autocontrol, the combination type flashing magnetic field selection machine can effectively throw out not only the fine particle impurity in the iron ore concentrate but also the coenobium and the vein mineral with coarse particle, obtaining the purpose of improving concentrate grade greatly.
Description
Technical field
The utility model relates to magnet mineral process technology, especially relates to a kind of selected technical equipment of magnet mineral that carries out.
Technical background
The height direct relation of iron ore concentrate quality the cost of blast furnace process, and ore dressing circle both at home and abroad is improving the emphasis of concentrate grade as scientific research.Mix the intergrowth and the small amounts of monomer gangue of some iron minerals and gangue mineral in the iron ore concentrate that common magnetic plant is selected inevitably, how this part intergrowth and gangue are dished out, be the difficult problem that iron concentrate grade is improved in each ore dressing plant of puzzlement always." reverse flotation " though effectively, complex process, production cost is too high; Magnetic agglomeration gravity separator can only be deviate from fine fraction intergrowth and gangue, can't will deviate from than coarse fraction impurity, and water consumption is big, and operation easier is big.
" reverse flotation " technology is on the basis of fine grinding, and magnetic concentrate is increased reverse flotation work, rejects the lean intergrowth in the concentrate.This technology is complex process not only, require standard higher to granularity and slurry temperature, need to build the reverse flotation factory building, and the iron mineral granularity had strict requirement, and increased consumption such as medicament, power, improved ratio of concentration, reduced production efficiency, increase metal loss, caused production cost to raise, and because made from medicament may cause the influence of environment.
Magnetic agglomeration gravity separator is the patented product (patent No. 85 1 03457.8) by cooperations such as The Inst. of Comprehensive Utilization of Mineral Resource, Ministry of Geology and Shoudu Iron and Steel Co. design in 1985, in magnetic agglomeration gravity separator, constituted magnetic field distribution low-intensity magnetic field relatively uniformly by permanent magnetic system, the magnetic field intensity of each point is constant, a magnetic field force magnetize agglomeration, sorting depends primarily on the contrast of the floating lifting force size of gravity and rising flow of slurry.This equipment does not have downward magnetic force, and ascending current can not be too fast, and coarse grain impurity does not take off; Constitute by permanent magnet owing to each magnet ring simultaneously, magnetic field exists all the time, magnetic mineral only relies on more weak magnetic field force and gravity in ore pulp, " reunion-dispersion-reunion " phenomenon that forms is not obvious, the impurity that is mingled with is difficult for taking off, when especially lean intergrowth content was higher in ore, sorting result was more undesirable; In addition, this equipment volume is huge, and water consumption is very big, makes that the burden of the water yield increases in the flow process, has increased the burden of pump and magnetic separator; The technology operation is adjusted complicated, needs more experienced post operation worker just can adjust, otherwise will cause the fluctuation of mineral processing index.
Summary of the invention
The purpose of this utility model is for the magnet mineral are sorted, especially carry out selected, defective and deficiency at " reverse flotation " technology and magnetic agglomeration gravity separator existence have proposed a kind of compound flicker of wet type picking equipment magnetic field refiner by magnetic force, gravity and hydraulic forces.
The utility model has the advantages that the characteristics that sort of having concentrated magnetic agglomeration gravity separator and permanent-magnet drench pit, designed special magnetic signature, equipment itself can be controlled automatically, not only can effectively the particulate impurity in the iron ore concentrate be dished out, and can also effectively more coarsely graded intergrowth and gangue mineral be dished out, reach the purpose that increases substantially concentrate grade.Commerical test proves that its amplitude that improves concentrate grade is higher 2～3 times than magnetic agglomeration gravity separator.
The utility model comprises cylindrical shell, ore feeder, overflow launder, feed feeder, ore discharge valve, it is characterized in that: be provided with the plurality of electromagnetic coil that is submerged in the ore pulp from top to bottom at regular intervals at cylinder inboard wall, being provided with permanent magnet in the feed feeder bottom evenly distributes along circumference, point to the center of circle with pole-face, the solenoid of topmost is powered continuously, and by the Current Control electromagnetism intensity, to keep the overflow liquid level stabilizing; The bottom solenoid is intermittence, power supply at interval successively from top to bottom, produces flicker magnetic field, and the reinforcement magnetic mineral produces reunion-dispersion-agglomeration in ore pulp; Cylindrical shell top is provided with overflow launder, on the described overflow launder pressure sensor is installed; The cylindrical shell bottom is provided with the ore discharge valve, and described ore discharge valve links to each other with YE.Detect the confluent signal by flowmeter, detect with pressure sensor and divide the constituency concentration signal,, meet setting value and overflow liquid level stabilizing to keep confluent by the current strength of control system control magnetic valve, ore discharge valve, solenoid.
Described solenoid top array solenoid is big coil, and bottom array solenoid is a small coil.
Described permanent magnet is fixed on along on the circumferential inner wall ring-type stainless steel band with brass bolt; Described permanent magnet replaces with solenoid, evenly distributes along the cylinder inboard wall circumference.
Description of drawings
Fig. 1 is the related compound flicker magnetic field refiner structural representation of the utility model;
Fig. 2 is an A-A profile among Fig. 1.
As shown in the figure: 1. ore feeder, 2. pressure sensor, 3. overflow launder, 4. cylindrical shell, 5. cable penetration pipe, 6. coil brace, 7. big solenoid, 8. little solenoid, 9. feed feeder, 10. permanent magnet, 11. YE, 12. magnetic valves, 13. flowmeters, 14. ore discharge valves.
The specific embodiment
Close the structure of the compound flicker magnetic field refiner that the utility model is related and position: overflow launder 3 is installed in cylindrical shell 4 tops, downflow weir place setting pressure sensor 2, ore feeder 1 is supported on the overflow launder 3, mineral-feeding pipe tangentially feeds, top is provided with blast pipe, the bottom mineral-feeding pipe is deep into cylindrical shell 4 inside and gives the ore deposit by the middle part level, and the mineral-feeding pipe bottom is provided with the dish of returning mine.Feed feeder 9 is arranged on cylindrical shell 4 bottom cones top, and flowmeter 13 and magnetic valve 12 are installed on the supply line, and feed feeder 9 water pipe that respectively feeds water all tangentially feeds cylindrical shell 4 to water, in cylinder center a feed pipe is set downwards, and returns water pond.In the cylindrical shell bottom, ore discharge valve 14 is installed, control the opening degree of ore discharge valve 14 with YE 11, finally control concentrate ore discharge amount.
This refiner inside is provided with electromagnetic permanent magnet combined magnetic, wherein feed feeder 9 bottoms are fixed with permanent magnet 10 and evenly distribute along circumference, be fixed on along on the circumferential inner wall ring-type stainless steel band with brass bolt, point to the center of circle with pole-face, be provided with the plurality of electromagnetic coil 7,8 that is submerged in the ore pulp from top to bottom at regular intervals at cylinder inboard wall, coil is placed on the coil brace made from stainless steel that is easy to dismantle 6, the solenoid of topmost is powered continuously, and by the Current Control electromagnetism intensity, to keep the overflow liquid level stabilizing.Several groups of solenoids in bottom are intermittence, power supply at interval successively from top to bottom, produces flicker magnetic field.The compound flicker of this utility model magnetic field refiner is attached with automatic control system, wherein: detect the confluent signal by flowmeter 13, detect branch constituency concentration signal with pressure sensor 2, by the current strength of control system control magnetic valve 12, ore discharge valve 14 and solenoid 7,8, to keep confluent to meet setting value and the overflowing liquid surface state is stable.
The operating principle of the compound flicker of the utility model magnetic field refiner is: compound flicker magnetic field refiner utilizes solenoid to generate an electromagnetic field, and has improved the sorting condition of fine fraction magnetite ore particles, improves separating effect.Ore pulp is fed in the cylindrical shell by ore feeder, and the magnetization in the flicker magnetic field that is produced by solenoid of Armco magnetic iron mineral forms the magnetic coagulation body, has strengthened own wt and has added magneticaction, has overcome the downward sedimentation of floating act effect of the ascending current that is fed by feed feeder.In the infall process, be continuous reunion-loose-aggregating state, so that the gangue mineral and the more weak intergrowth water of magnetic that are mingled with in the aggregate are gone out, make concentrate constantly obtain purifying, when concentrate is deposited to the feed feeder below, be subjected to the effect of the advanced magnetic dewater cone that constitutes by permanent magnetic system and conical section again, further selected, form final concentrate and from the ore discharge valve of bottom, discharge.Gangue mineral and intergrowth do not overcome the ascending current effect, move upward with ascending water, form overflow at last and discharge from overflow launder.In the process that moves upward, the magnetic field of constantly being glimmered again acts on, with the iron ore concentrate reunion sinking of monomer dissociation.
When mine-supplying quantity and confluent change, in cylinder, put then variation thereupon of (title selects subregion) concentration between the downflow weir to the ore deposit, pressure sensor is passed to automaton with the change in concentration signal, current strength by automaton control solenoid, magnetic field intensity is also changed thereupon, thereby change the magnetic mineral subsidence velocity, also control simultaneously the opening degree of following ore discharge valve, change ore discharge speed, detect the flow meter signal size by automatic control system again, the control magnetic valve is adjusted confluent, thereby keeps selecting subregion concentration to be tending towards setting value, keeps the best and sorts state.When ore character changes, during the concentrate quality fluctuation, then adjust current setting value, make magnetic field intensity adapt to ore and change, guarantee the final concentrate quality, realization is selected to magnetic mineral.
The characteristics of the compound flicker of the utility model magnetic field refiner are:
The compound flicker of this utility model magnetic field refiner improves the disposal ability of unit platform by the electromagnetism magnetic field that makes full use of the solenoid generation.Consider to give influence of various factors such as ore deposit mode and processing ore pulp amount, seven groups of solenoids insulative water-proof, Wear-resistant Treatment have been carried out, cable carries out encapsulation process at cable penetration pipe place, solenoid directly is placed in the ore pulp works, disposal ability increases substantially, and has both reached to reduce the purpose that configuration is installed, the platform number is started in minimizing, has saved investment amount and operation consumption, simplify device structure again, be convenient to maintenance.
The compound flicker of this utility model magnetic field refiner is combined in the cylindrical portions may of magnetic agglomeration gravity separator (sorting the district) on the permanent-magnet drench pit of top magnetic system, and changes the magnetic system of magnetic agglomeration gravity separator into electromagnetism by permanent magnetism.Magnetic system is placed on cylinder interior, and bottom magnetic is permanent magnetic system, is evenly to be distributed along circumference by permanent magnets to constitute, and is fixed on along on the circumferential inner wall ring-type stainless steel band with brass bolt, points to the center of circle with pole-face.Its residual magnetism system constitutes by solenoid, has so just formed a compound magnetic that is made of solenoid and permanent magnets to be.Wherein solenoid is totally 7, and the 4 groups of solenoids in top are big coil, and the 3 groups of solenoids in bottom are small coil, at interval 200～250mm.Above 4 coil turns more, spacing is less, with produce higher magnetic field intensity (because of this district's ascending current speed big); Below 3 coil turns less, spacing is bigger.The coil in top is powered continuously, and purpose is to protect spillwag chute to stablize, and " does not turn over the black ore deposit of running ".Other coil is pressed certain hour order intermittence, power supply at interval successively, to produce flicker magnetic field, makes magnetic mineral produce sufficient reunion-dispersion-agglomeration in ore pulp.The current strength of power supply, power-on time, intermittent time and interval coil number are all adjustable.
Because of coil is pressed order power supply successively up and down, guaranteed that magnetic mineral is subjected to downward magneticaction all the time in infall process, on the basis of magnetic coagulation technology, make the magnetite concentrate mineral grain on the basis that is subjected to the gravity effect, be subjected to the effect of a downward magnetic field force again; Again because of coil spacing, intermittent power supply, after magnetic mineral is reunited enough dispersion space are arranged in ore pulp, promote intergrowth and gangue fully to break away from aggregate, so can carry out the interpolation of the ascending water water yield fully, can be when the magnetic coagulation body disperses, intergrowth and gangue mineral are fully deviate from, and taken to the top by ascending current and go out from the overflow longshore current.The cylindrical shell top diameter shrinks, and sectional area reduces, and ascending current speed is accelerated, and discharges with overflow as early as possible so that break away from the impurity in magnetic field.Finally reach not only and can effectively deviate from particulate impurity in the concentrate, can fully take off purpose again than coarse fraction impurity.
Cylinder below the feed feeder and conical section are equivalent to the advanced magnetic dewater cone of permanent magnetism of a top magnetic system.From top to bottom, the concentration and the proportion of each point ore pulp progressively strengthen, and less gangue of proportion and intergrowth further are eliminated, and selected effect is stronger.
Automatically regulate magnetic field intensity, improved the adaptivity that sorts.Can adjust according to the variation of pulp density for the magnetic field intensity that coil is produced, improve its adaptivity.Set up concentration detection apparatus in a minute constituency, adjust electric current in the coil by the concentration that detects the branch constituency, when the concentration in minute constituency increases, strengthen the electric current of coil, increase the active force of magnetic field, prevent that mineral powder granular from can not overcome the scouring force of current and to cause overflow to turn over black magnetic conduction particle in the ore pulp; When the concentration in minute constituency reduces, by reducing the electric current in the coil, reduce magnetic field intensity and prevent that magnetic-particle in the ore pulp from because conglomerate is too magnetized in excessive magnetic field effect, can't open again, and influencing sorting result after magnetic field disappears.The realization of this requirement is a passing ratio, integration, derivative controller is that PID realizes, at the inner liquid level difference meter of installing of Electromagnetic accumulating machine, detect the variable signal of the pulp density that self-supporting mining area makes progress by liquid level sensor, the electric current that is converted into 4～20mA of standard is sent into the PID controller, automatically export 8031 singlechip control panels to by setting P (ratio) I (integration) D (differential) parameter and setting value parameter S V, 8031 control panels are regulated output again circulation silicon controlled control voltage are controlled the electric current of coil in the circulation magnetic field and the opening degree of bottom ore discharge valve.In addition, flowmeter and magnetic valve are housed on the feed feeder supply channel, detect water yield signal,, keep confluent to meet duty setting signal by the open degree of PID control magnetic valve by flowmeter.This has just guaranteed that equipment is in the best all the time and sorts state, and without the manually-operated adjustment.
Claims (4)
1, a kind of compound flicker magnetic field refiner, comprise cylindrical shell, ore feeder, overflow launder, feed feeder, ore discharge valve, it is characterized in that: be provided with plurality of electromagnetic coil (7), (8) from top to bottom at regular intervals at cylindrical shell (4) inwall, being provided with permanent magnet (10) in described feed feeder (9) bottom evenly distributes along circumference, point to the center of circle with pole-face, the solenoid of topmost is powered continuously; Bottom solenoid (7), (8) are intermittence, power supply at interval successively from top to bottom; Cylindrical shell (4) top is provided with overflow launder (3), and pressure sensor (2) is installed on the described overflow launder (3); Cylindrical shell (4) bottom is provided with ore discharge valve (14), and described ore discharge valve (14) links to each other with YE (11).
2, a kind of compound flicker according to claim 1 magnetic field refiner, it is characterized in that: described solenoid top array solenoid (7) is big coil, and bottom array solenoid (8) is a small coil.
3, a kind of compound flicker according to claim 1 magnetic field refiner, it is characterized in that: described permanent magnet (10) is fixed on along on the circumferential inner wall ring-type stainless steel band with brass bolt.
4, a kind of compound flicker according to claim 1 magnetic field refiner is characterized in that: described permanent magnet (10) replaces with solenoid, evenly distributes along the cylinder inboard wall circumference in feed feeder (9) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320102563 CN2698453Y (en) | 2003-11-04 | 2003-11-04 | Combination type flashing magnetic field selection machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320102563 CN2698453Y (en) | 2003-11-04 | 2003-11-04 | Combination type flashing magnetic field selection machine |
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| Publication Number | Publication Date |
|---|---|
| CN2698453Y true CN2698453Y (en) | 2005-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320102563 Expired - Fee Related CN2698453Y (en) | 2003-11-04 | 2003-11-04 | Combination type flashing magnetic field selection machine |
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| CN (1) | CN2698453Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102145315A (en) * | 2011-01-29 | 2011-08-10 | 刘治家 | Multi-level desiliconizing and purifying method and device for high-purity fine iron powder |
| CN108435415A (en) * | 2018-04-20 | 2018-08-24 | 刘阳 | A kind of efficient magnetic force classification machine |
| CN109046743A (en) * | 2018-07-20 | 2018-12-21 | 太原理工大学 | A kind of compound force field sorting machine and its method for separating for magnetic iron ore sorting |
| CN112916432A (en) * | 2021-03-24 | 2021-06-08 | 江西理工大学 | Intelligent magnetic ore sorting method and equipment |
| CN113695081A (en) * | 2021-08-24 | 2021-11-26 | 北矿机电科技有限责任公司 | Separator of electric permanent magnet |
-
2003
- 2003-11-04 CN CN 200320102563 patent/CN2698453Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102145315A (en) * | 2011-01-29 | 2011-08-10 | 刘治家 | Multi-level desiliconizing and purifying method and device for high-purity fine iron powder |
| CN102145315B (en) * | 2011-01-29 | 2014-11-26 | 刘治家 | Multi-level desiliconizing and purifying method and device for high-purity fine iron powder |
| CN108435415A (en) * | 2018-04-20 | 2018-08-24 | 刘阳 | A kind of efficient magnetic force classification machine |
| CN109046743A (en) * | 2018-07-20 | 2018-12-21 | 太原理工大学 | A kind of compound force field sorting machine and its method for separating for magnetic iron ore sorting |
| CN112916432A (en) * | 2021-03-24 | 2021-06-08 | 江西理工大学 | Intelligent magnetic ore sorting method and equipment |
| CN113695081A (en) * | 2021-08-24 | 2021-11-26 | 北矿机电科技有限责任公司 | Separator of electric permanent magnet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050511 Termination date: 20111104 |