CN112122000A - Coarse-grained magnetic mineral magnetic gravity creeping magnetic system construction method, magnetic system and magnetic separation equipment - Google Patents

Abstract

The invention belongs to the technical field of weak magnetic magnetite wet separation. A coarse magnetic mineral magnetic gravity creep magnetic system construction method comprises the following steps: configuring an exciting body, and applying an exciting force to the exciting body to make the exciting body vibrate slightly; placing the magnetic aggregate in the magnetic field range of an exciter, wherein the magnetic aggregate is subjected to the adsorption action of the exciter, the gravity action and the excitation force of the magnetic aggregate; the non-magnetic substance in the magnetic aggregate continuously moves outwards in the micro-amplitude vibration process of the excitation body, and the impurity removal of the magnetic aggregate is completed. The application also discloses coarse grain magnetic mineral magnetic gravity creeping magnetic system and coarse grain magnetic mineral magnetic gravity creeping magnetic separation equipment, and the combined action of magnetic force, gravity, inertia, exciting force and the like is adopted in the application, so that coarse grain nonmagnetic objects are gradually separated from the inside of a magnetic aggregate in the separation process, and the quality of concentrate is improved.

Description

Coarse-grained magnetic mineral magnetic gravity creeping magnetic system construction method, magnetic system and magnetic separation equipment

technical field

The invention belongs to the technical field of weak magnetic magnetite wet separation, and in particular relates to a method for constructing a coarse-grained magnetic mineral magnetic gravity creeping magnetic system, a magnetic system and a magnetic separation device.

Background technique

In conventional wet weak magnetic separation, when the pulp flows through the action range of the fixed magnetic roller, the magnetic minerals are captured by the magnetic field to form a firm magnetic agglomerate that is adsorbed on the surface of the rotating roller, and is dragged by the rotating roller away from the magnetic field. It becomes the concentrate of magnetic separation. Due to the formation of thick magnetic agglomerates on the surface of the roller under the action of the magnetic field, a large number of conjoined minerals and non-magnetic minerals are also included, and enter the concentrate products together with the magnetic substances, thereby reducing Magnetic separation concentrate grade.

SUMMARY OF THE INVENTION

The purpose of the present invention is to address the above-mentioned problems and deficiencies, and to provide a method for constructing a coarse-grained magnetic mineral magnetic gravity crawling magnetic system, a magnetic system and a magnetic separation equipment, which adopts the combined action of magnetic force, gravity, inertia and excitation force, etc., For coarse-grained non-magnetic substances, they are gradually separated from the interior of the magnetic agglomerates during the sorting process to improve the quality of concentrates.

In order to achieve the above purpose, the technical solutions adopted are:

A method for constructing a coarse-grained magnetic mineral magnetic-gravity creeping magnetic system, comprising the following steps:

configuring an exciter, and applying an exciting force to the exciter, so that the exciter vibrates with a slight amplitude;

The magnetic agglomerate is placed in the magnetic field range of the exciter, and the magnetic agglomerate is subjected to the adsorption action of the exciter, the gravitational action of the magnetic agglomerate and the action of the excitation force;

The non-magnetic substances in the magnetic agglomerates move out continuously during the micro-amplitude vibration of the exciter to complete the impurity removal of the magnetic agglomerates.

According to the method for constructing the magnetic-gravity creeping magnetic system of coarse-grained magnetic minerals of the present invention, preferably, a mechanical dragging unit is configured, and the mechanical dragging unit drives the magnetic agglomerate to move within the action range of the magnetic field of the exciter, so as to realize the magnetic agglomerate. Magnetic mineral transfer in .

A coarse-grained magnetic mineral gravitational creeping magnetic system, configured by using the above-mentioned method for constructing the magnetic gravitational creeping magnetic system of granular magnetic minerals, comprising:

Exciter;

a rotating drum, the excitation body is arranged in the rotating drum and forms a magnetic field at least at the lower part of the rotating drum;

a driving part, which drives the rotating drum to rotate;

a base, the rotating shaft of the rotating roller is arranged on the base through a bearing seat, and the driving part is arranged on the base and is connected with the rotating shaft in a driving manner; and

an excitation unit, which applies an excitation force to the base.

According to the coarse-grained magnetic mineral magnetic-gravity creeping magnetic system of the present invention, preferably, the exciters are uniformly distributed along the circumference of the inner wall of the rotating drum.

According to the coarse-grained magnetic mineral magnetic gravity creeping magnetic system of the present invention, preferably, the exciter is arranged in a fan shape and corresponds to the lower part of the rotating drum, and the upper part of the exciter is connected to the rotating shaft through a bearing.

According to the coarse-grained magnetic mineral magnetogravimetric peristaltic magnetic system of the present invention, preferably, the excitation unit comprises:

an elastic member supported on the lower part of the base; and

A vibration motor is provided on the base.

A coarse-grained magnetic mineral magnetic gravity crawling magnetic separation equipment, comprising:

frame;

a feed trough, which is arranged on the frame, a tailings bin is provided at the bottom of the feed trough, and a concentrate bin is provided on the first side of the feed trough; and

For the above-mentioned coarse-grained magnetic mineral magnetic gravity creeping magnetic system, the support is arranged on the frame, the rotating roller is correspondingly arranged in the material trough, and the rotating roller is connected to the second part of the material trough. A feed bin is formed between the sides.

According to the magnetic gravity crawling magnetic separation equipment for coarse-grained magnetic minerals of the present invention, preferably, two ends of the frame are provided with support bases, and the base is set on the support bases through the excitation unit.

According to the present invention, the magnetic gravity peristaltic magnetic separation equipment for coarse-grained magnetic minerals preferably further includes a discharge assembly, wherein the discharge assembly is a high-pressure water flushing pipe arranged on the first side of the material trough, or the discharge The material assembly is a discharge baffle provided in contact with the rotating roller, or the discharge assembly is an electromagnet disposed on the first side of the material trough.

According to the magnetic gravity crawling magnetic separation device for coarse-grained magnetic minerals of the present invention, preferably, the driving part includes a driving motor and a reducer.

By adopting the above technical scheme, the beneficial effects obtained are:

In view of the above-mentioned problems of conventional magnetic separation technology, the present invention adopts the combined action of magnetic force, gravity, inertia and excitation force, etc., for coarse-grained non-magnetic substances, and gradually separates them from the interior of magnetic agglomerates during the separation process.

The invention introduces high-frequency micro-amplitude vibration in the vertical radial direction of the rotating roller, and the non-magnetic substances mixed in the magnetic agglomerate will instantly vibrate in the magnetic agglomerate with the micro-amplitude high-frequency vibration under the action of its own gravity and inertia. A small gap is generated near the side of the magnetic roller, and the strong magnetic minerals around the gap fill the gap instantly under the action of the magnetic field.

In the present application, under the action of this continuous high-frequency micro-amplitude magnetic vibration, the non-magnetic minerals gradually creep away from the surface of the magnetic roller, and finally creep from the inside of the magnetic agglomerate to the outer surface of the magnetic agglomerate, and settle under the action of its own gravity Detach the magnetic agglomerate and enter the tailings bin; while the strong magnetic minerals gradually fill the gaps generated by the non-magnetic material creep and gradually enter the inner side of the magnetic drum. The invention solves the problem of the conventional magnetic separation of non-magnetic minerals, and also forms the layer of magnetite monomer and conjoined body according to the magnetic strength from the inside to the outside on the surface of the magnetic drum, that is, the magnetite on the surface of the magnetic drum is the most magnetic Strong magnetite monomer, located outside the magnetic agglomerate is the weakest magnetic conjoined mineral.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings of the embodiments of the present invention will be briefly introduced hereinafter. The accompanying drawings are only used to illustrate some embodiments of the present invention, but not to limit all the embodiments of the present invention thereto.

FIG. 1 is a schematic structural diagram of a magnetic gravity crawling magnetic separation device for coarse-grained magnetic minerals according to an embodiment of the present invention.

FIG. 2 is a schematic side view of the structure of the coarse-grained magnetic mineral magnetic gravity crawling magnetic separation device according to an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of an exciter according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of the force of the non-magnetic material entrapped in the magnetic agglomerate.

FIG. 5 is a schematic diagram of a small gap between the upper part of the non-magnetic material and the magnetic material at the moment of excitation.

FIG. 6 is a schematic diagram of the separation state of the non-magnetic substance and the magnetic substance mixed in the magnetic aggregate during the dragging process of the magnetic aggregate.

Serial number in the picture:

100 is the frame, 101 is the support seat;

200 is a feeding trough, 201 is a tailings bin, 202 is a concentrate bin, 203 is a feeding bin, 204 is a concentrate discharge port, 205 is a tailings discharge port, and 206 is a discharge component;

300 is a base, 301 is a spring, 302 is a vibration motor, 303 is a rotating roller, 304 is a rotating shaft, 305 is an exciter, 306 is a drive motor, 307 is a reducer, and 308 is a bearing seat.

401 is a magnetic mineral, 402 is a non-magnetic mineral, 403 is a tiny gap, and 404 is a magnetic system.

Detailed ways

Hereinafter, the exemplary solutions of the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings of the specific embodiments of the present invention. Unless otherwise defined, technical or scientific terms used in the present invention should have the ordinary meaning as understood by those of ordinary skill in the art.

In the description of the present invention, it should be understood that the expressions "first" and "second" are used to describe various elements of the present invention, and do not represent any order, quantity or importance limitation, but are only used to One part is distinguished from another part.

It should be noted that when an element is expressed as "connected", "coupled" or "connected" to another element, it may mean that it is directly connected, coupled or connected, but it should be understood that there may be Intermediate elements; that is, the positional relationship covering both direct and indirect connections.

It should be noted that the use of "a" or "an" and similar words also does not necessarily imply a limitation of quantity. "Comprising" or "comprising" and similar words mean that the elements or things appearing before the word encompass the elements or things recited after the word and their equivalents, but do not exclude other elements or things.

It should be noted that terms such as "upper", "lower", "left", and "right" indicating an orientation or positional relationship are only used to indicate a relative positional relationship, which is for the convenience of describing the present invention, rather than referring to a device or a device. Elements must have a specific orientation, be constructed and operated in a specific orientation; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

Referring to FIGS. 1 to 6 , the present application discloses a method for constructing a coarse-grained magnetic mineral magnetogravimetric peristaltic magnetic system, comprising the following steps:

configuring an exciter, and applying an exciting force to the exciter, so that the exciter vibrates with a slight amplitude;

The magnetic agglomerate is placed in the magnetic field range of the exciter, and the magnetic agglomerate is subjected to the adsorption action of the exciter, the gravitational action of the magnetic agglomerate and the action of the excitation force;

The non-magnetic substances in the magnetic agglomerates move out continuously during the micro-amplitude vibration of the exciter to complete the impurity removal of the magnetic agglomerates.

At the same time, in order to facilitate the separate collection of tailings and concentrates, the present application is also equipped with a mechanical dragging unit, which drives the magnetic agglomerate to move within the magnetic field action range of the exciter, so as to realize the magnetic agglomerate in the magnetic agglomerate. Magnetic mineral transfer.

Specifically, the principle of the above construction method is further explained in detail:

First, the magnetic agglomerate is placed in a composite force field of magnetism, gravity and excitation force, so that the direction of the magnetic force on the magnetic agglomerate is opposite to the direction of its own gravity; The excitation force, which is far greater than the magnet's own gravity and is opposite to the direction of gravity, makes the excitation body produce a slight upward movement; when the excitation body moves slightly to the top, the excitation force is instantly cancelled, and the excitation body is under the action of its own gravity. It drops rapidly and slightly. When the excitation body drops to the bottom of the amplitude of the slight vibration, the exciting force is started again.

At the same time as the above-mentioned exciting action is continuously reciprocating, the magnetic agglomerate is also synchronously vibrating at a slight amplitude in the up and down direction under the driving of the exciter. A mechanical drag force is applied to the magnetic agglomerate in the direction, so that the magnetic agglomerate continuously vibrates up and down, and at the same time gradually moves from one side of the magnetic field to the other side of the magnetic field, and leaves the magnetic field and enters the magnetic separation concentrate bin.

The present application also discloses a coarse-grained magnetic mineral gravitational creeping magnetic system, which is configured by using the above-mentioned method for constructing a magnetic gravitational creeping magnetic system of granular magnetic minerals, including an exciter, a rotating roller, a driving part, a base, and an excitation unit, The exciter is arranged in the rotating drum and forms a magnetic field at least at the lower part of the rotating drum; the driving part drives the rotating drum to rotate; the rotating shaft of the rotating drum is arranged on the On the base, the driving part is arranged on the base and is drive-connected with the rotating shaft; the excitation unit applies an exciting force to the base.

The excitation bodies are evenly distributed along the inner wall of the rotating drum in the circumferential direction. The exciter can also be arranged in a fan-shaped arrangement, corresponding to the lower part of the rotating drum, the upper part of the exciter is connected with the rotating shaft through a bearing, and the gravity of the exciter is used to keep it at the bottom all the time, so that it does not. Will rotate with the rotating drum and shaft.

The vibration excitation unit includes an elastic member supported on the lower part of the base and a vibration motor, the vibration motor is arranged on the base, and the elastic member can be a spring.

Further, the present application also discloses a coarse-grained magnetic mineral magnetic-gravity creeping magnetic separation device, comprising a rack, a feeding trough and a coarse-grained magnetic mineral magnetic-gravity creeping magnetic system, the feeding trough is arranged on the frame, and the A tailings bin is arranged at the bottom of the material trough, and a concentrate silo is arranged on the first side of the material trough; Correspondingly arranged in the material trough, a feeding bin is formed between the rotating roller and the second side of the material trough.

The two ends of the frame are provided with support bases, and the base base is set on the support base through the vibration excitation unit, that is, the base base is supported on the support base through a spring; the driving part includes a drive motor and a reducer, which drives Both the motor and the reducer are arranged on the base.

In order to facilitate unloading, the present application is also provided with a unloading assembly, and the unloading assembly may be a high-pressure water flush pipe arranged on the first side of the material trough; or the unloading assembly may be connected to the rotating roller. A discharge baffle set in close contact; or the discharge assembly is an electromagnet set on the first side of the material trough. According to different applications, any one of the above-mentioned ones can be used, and two kinds can also be provided.

The structure of the coarse-grained magnetic mineral magnetogravimetric crawling magnetic separation equipment and the structure of the coarse-grained magnetic mineral magnetogravimetric crawling magnetic system is described in detail as follows: The magnetic system is uniformly distributed along the bottom of the circumference and symmetrically distributed on both sides along the vertical direction, and the magnetic system wrapping angle Less than or equal to 180°, set on the central axis of the circumference; a rotating roller concentric with the circumference is arranged on the outside of the magnetic system, and there is a certain gap between it and the magnetic system; one end of the rotating roller is installed with a transmission mechanism for driving the rotation of the roller And the motor reducer, the motor, the reducer and the transmission mechanism are fixed on the base together with the shaft end bearing seat; the lower part of the base is connected with an elastic element and fixed on the support seat of the equipment rack, and the bottom of the base is also fixed with a high-frequency oscillation Motor; the first side part of the rotating roller is a concentrate bin, the second side part is provided with a feeding hopper corresponding to the feeding bin, and the bottom of the rotating roller is provided with a tailings bin, a feeding hopper, a concentrate bin and a tailing bin Welded and fixed on the equipment rack.

High-frequency micro-amplitude vibration is introduced in the vertical radial direction of the rotating drum. Under the action of the magnetic force, the magnetic material will vibrate up and down synchronously with the drum. However, since the non-magnetic material is not affected by the magnetic force, the magnetic agglomerate will vibrate upward and rise upward. Under the action of its own gravity and inertia, the non-magnetic substances mixed in the magnetic agglomerate are instantly squeezed to the outside of the magnetic agglomerate, and a tiny gap is generated inside the magnetic agglomerate on the side of the magnetic roller, which is located in the gap. Under the action of the magnetic field, the surrounding strong magnetic minerals will instantly fill the gap generated. Under the continuous high-frequency and micro-amplitude magnetic vibration, the internal gaps of the magnetic agglomerates are continuously generated and filled with strong magnetic minerals, so that the non-magnetic minerals gradually creep away from the surface of the magnetic roller, and finally creep from the inside of the magnetic agglomerates. To the outer surface of the magnetic agglomerate, it will settle out of the magnetic agglomerate and enter the tailings bin under the action of its own gravity.

The strong magnetic minerals gradually fill the gaps and enter the inner side of the magnetic roller. Since the weakly magnetic conjoined minerals receive less magnetic force than the magnetite monomer during the process of filling the gaps, they are gradually “extruded” during the process of filling the gaps. , also moved to the outside of the magnetic aggregates under the action of the peristaltic effect. Therefore, the present invention effectively solves the problem of non-magnetic minerals being mixed with conventional magnetic separation, and at the same time, the layer of magnetite monomer and conjoined body is formed on the surface of the magnetic drum from the inside to the outside. Magnetite monomer, located outside the magnetic agglomerate is the weakest magnetic conjoined mineral.

As shown in FIG. 4 , it is a schematic diagram of the force of the non-magnetic material mixed in the magnetic agglomerate. It is difficult for the non-magnetic substances wrapped in the magnetic agglomerates to break through the close encapsulation of the magnetic force generated by the magnetic substances under the action of the magnetic field, so it is easy to enter the concentrate with the magnetic substances and affect the quality of the concentrate. F1 is the rationality of gravity and pressure, and F2 is the resultant force of the wrapping force. In a static state, in the vertical direction, the magnetic wrapping force of the non-magnetic substances mixed in the magnetic aggregates is related to gravity and the effect of the inner minerals on the non-magnetic substances. The resultant pressure forces of the magnetic aggregates balance each other, and the non-magnetic substances in the magnetic agglomerate are stationary in the vertical direction. Therefore, it is difficult for the non-magnetic substance to overcome the encapsulation effect of the magnetic agglomerate and be detached from the magnetic agglomerate in this state.

As shown in Figure 5, the present invention introduces magnetic excitation in the vertical direction, which is equivalent to applying a force opposite to the direction of gravity on the magnetic agglomerate instantaneously, and the magnetic agglomerate moves upward instantaneously under the action of the excitation force. , the non-magnetic material maintains a static state instantaneously under the action of its own inertia, so a small gap is instantaneously generated on the side of the non-magnetic material close to the upper roller, which is instantly filled by the surrounding magnetic material. In addition, the magnetic excitation in the present invention instantly loosens the originally larger magnetic agglomerate, which also greatly reduces the resistance of the non-magnetic material originally wrapped in the magnetic agglomerate to creep to the outside of the magnetic agglomerate.

FIG. 5 is a schematic diagram of a small gap between the upper part of the non-magnetic material and the magnetic material at the moment of excitation. At the moment of excitation, the static state of the exciter and the magnetic material on the upper part of the non-magnetic material is instantly broken, and suddenly moves upward in a very short period of time, causing the pressure reaction force exerted by the upper roller and the magnetic material on the non-magnetic material to instantly decrease. Small or even disappears, resulting in a loose and extremely small gap, and then, also in a very short moment, the magnetic material around the non-magnetic material moves upward under the action of magnetic force, filling the generated gap instantly, making the non-magnetic material and the fixed The distance between the superimposed magnetic systems increases, and the non-magnetic material creeps slightly to the outside of the magnetic agglomeration inclusions.

As shown in Fig. 6, as the excitation continues, the creeping as shown in Fig. 5 continues, and the non-magnetic substance gradually creeps to the outside of the magnetic agglomerate inclusions, finally exposed to the outer surface of the magnetic agglomerate, and gradually disappears from the magnetic agglomerate. The separation of the non-magnetic substances and the magnetic substances in the magnetic agglomerate is completed. The dynamic process of the entire separation is shown in Figure 6.

The preferred embodiments for carrying out the present invention have been described in detail above, but it should be understood that these embodiments are intended to be illustrative only and not intended to limit the scope, applicability, or configuration of the invention in any way. The scope of protection of the present invention is defined by the appended claims and their equivalents. Those skilled in the art can make many changes to the foregoing embodiments under the teaching of the present invention, and these changes all fall within the protection scope of the present invention.

Claims (10)

1. a coarse-grained magnetic mineral magnetic gravity crawling magnetic system construction method, is characterized in that, comprises the following steps: configuring an exciter, and applying an exciting force to the exciter, so that the exciter vibrates with a slight amplitude; The magnetic agglomerate is placed in the magnetic field range of the exciter, and the magnetic agglomerate is subjected to the adsorption action of the exciter, the gravitational action of the magnetic agglomerate and the action of the excitation force; The non-magnetic substances in the magnetic agglomerates move out continuously during the micro-amplitude vibration of the exciter to complete the impurity removal of the magnetic agglomerates. 2 . The method for constructing a magnetic weight creeping magnetic system of granular magnetic minerals according to claim 1 , wherein a mechanical dragging unit is configured, and the mechanical dragging unit drives the magnetic agglomerate within the magnetic field action range of the exciter. 3 . move to achieve the transfer of magnetic minerals in the magnetic agglomerates. 3. A coarse-grained magnetic mineral magnetic gravity creeping magnetic system, utilizing the method for constructing the granular magnetic mineral magnetic gravity creeping magnetic system according to claim 1 or 2 to configure, it is characterized in that, comprising: Exciter; a rotating drum, the excitation body is arranged in the rotating drum and forms a magnetic field at least at the lower part of the rotating drum; a driving part, which drives the rotating drum to rotate; a base, the rotating shaft of the rotating roller is arranged on the base through a bearing seat, and the driving part is arranged on the base and is connected with the rotating shaft in a driving manner; and an excitation unit, which applies an excitation force to the base. 4 . The coarse-grained magnetic mineral magnetic weight creeping magnetic system according to claim 3 , wherein the exciters are uniformly distributed along the circumference of the inner wall of the rotating drum. 5 . 5 . The coarse-grained magnetic mineral magnetic weight creeping magnetic system according to claim 3 , wherein the exciter is arranged in a fan shape and corresponds to the lower part of the rotating drum, and the upper part of the exciter is connected to the upper part of the exciter through a bearing. 6 . The shaft is connected. 6. The coarse-grained magnetic mineral magnetic-gravity creeping magnetic system according to claim 3, wherein the excitation unit comprises: an elastic member supported on the lower part of the base; and A vibration motor is provided on the base. 7. A coarse-grained magnetic mineral magnetic gravity crawling magnetic separation device is characterized in that, comprising: frame; a feed trough, which is arranged on the frame, a tailings bin is provided at the bottom of the feed trough, and a concentrate bin is provided on the first side of the feed trough; and The coarse-grained magnetic mineral magnetic-gravity creeping magnetic system according to any one of claims 3-6, wherein the support is arranged on the frame, the rotating rollers are correspondingly arranged in the material trough, and the rotating rollers A feed bin is formed with the second side of the trough. 8 . The coarse-grained magnetic mineral magnetic gravity crawling magnetic separation device according to claim 7 , wherein the two ends of the frame are provided with support seats, and the base platform is arranged on the support seats through the excitation unit. 9 . superior. 9 . The coarse-grained magnetic mineral magnetic gravity crawling magnetic separation device according to claim 7 , further comprising a discharge assembly, wherein the discharge assembly is high-pressure water arranged on the first side of the material trough. 10 . The flushing pipe, or the discharge assembly is a discharge baffle provided in contact with the rotating roller, or the discharge assembly is an electromagnet disposed on the first side of the material trough. 10 . The coarse-grained magnetic mineral magnetic gravity crawling magnetic separation device according to claim 7 , wherein the driving part comprises a driving motor and a reducer. 11 .

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