46 results about "Demagnetizer" patented technology

The utility model discloses a demagnetizing machine with a drying system, which comprises a sealing shell (13) and a plurality of coils (7) arranged in the sealing shell, a material channel (2) is arranged in the middle of the sealing shell, a screen (1) is arranged in the material channel, an oil inlet (10) and an oil outlet (11) are arranged on the sealing shell, and the oil inlet (10) is communicated with the oil outlet (11). A cooling channel (14) filled with heat conduction oil is arranged between the sealing shell and the coil, a flow guide channel is arranged between the cooling channel and the material channel, the oil inlet, the cooling channel, the flow guide channel and the oil outlet are sequentially communicated, and the oil inlet is communicated with a conveying oil pump (F101) through a first oil guide pipe (G301). The material drying system is integrated, and waste heat generated by the demagnetizer system can be effectively utilized to dry materials.

The utility model discloses a demagnetization auxiliary conveying device which comprises a support, a guide rail and a conveying table top. The height of the support leg is matched with the height of a demagnetization window of the demagnetizer; the horizontal frame comprises two long edges and two short edges; u-shaped grooves with upward openings are formed in the two long sides of the U-shaped grooves respectively; a guide rail is placed in each U-shaped groove, each guide rail is composed of two metal rods and an insulating rod, and the insulating rods are placed between the two metal rods and abut against each other end to end; the horizontal frame horizontally penetrates through a demagnetization window of the demagnetizer, and the part, located in the demagnetization window, of the insulation conveying table top is erected on the two guide rails through idler wheels. And the conveying table board can completely penetrate through the demagnetizer. A worker can place multiple pairs of tools on the conveying table top at a time, the tools are pushed back and forth to penetrate through the demagnetizer to achieve the demagnetization effect, and the demagnetization efficiency is greatly improved. In addition, manual transmission is not needed in the process that the cutter penetrates through the demagnetizer, collision of the cutter is avoided, and meanwhile production accidents are avoided.

The utility model provides a demagnetizer for a bearing ring. The demagnetizer comprises a rack, the transmission roller conveying mechanism is arranged in the length direction of the rack; the demagnetizing mechanism is installed in the middle of the rack and arranged in the width direction of the rack and comprises a supporting frame installed on the rack, an upper magnet yoke assembly capable of ascending and descending along the supporting frame and a lower magnet yoke assembly installed on the rack and arranged right opposite to the upper magnet yoke assembly; the upper magnet yoke assembly comprises a first U-shaped magnet yoke and first coils, an opening of the first U-shaped magnet yoke faces downwards, and the first U-shaped magnet yoke is wound with two sets of parallel first coils. The lower magnet yoke assembly comprises a second U-shaped magnet yoke and second coils, an opening of the second U-shaped magnet yoke faces upwards, and two sets of parallel second coils are wound on the second U-shaped magnet yoke; the first coil and the second coil are connected in parallel. By adjusting the height of the upper magnet yoke assembly and the magnetic field intensity generated by the coil, effective demagnetization of the bearing ring is realized.

The application discloses a kind of magnetic seed induced mineral separation methods of iron ore, comprising the following steps: (1) processing mixed iron ore obtains dry magnetic separation concentrate and dry magnetic separation tailings;(2) dry magnetic separation tailings magnetization roasting obtains artificial magnetite;(3) dry magnetic separation concentrate is mixed with artificial magnetite;(4) the raw ore into mill is sent into one-stage closed-circuit grinding classification system, then enters one-stage low-intensity magnetic separation operation;(5) one-stage low-intensity magnetic rough concentrate is sent into two-stage closed-circuit grinding classification system, then enters two-stage low-intensity magnetic roughing operation;(6) two-stage low-intensity magnetic roughing concentrate is demagnetized after entering two-stage low-intensity magnetic cleaning operation by demagnetizer;(7) two-stage low-intensity magnetic cleaning concentrate is concentrated after demagnetization by demagnetizer, and iron concentrate product is obtained by flotation.The application adds natural magnetite contained in ore into artificial magnetite, which is easy to form magnetic chain with natural magnetite as core to strengthen the magnetic separation recovery of artificial magnetite, and the separation process has high iron recovery rate and high concentrate grade.

The invention discloses a preparation method of a modified nano carbon material and a lithium ion battery. Equipment for implementing the preparation method comprises a batch feeder, a jet mill and a demagnetizing machine which are sequentially arranged in the material advancing direction, and the jet mill and the demagnetizing machine are sequentially arranged from top to bottom in the height direction; the preparation method comprises the following steps: step 1, a nano carbon material and a modified material are mixed according to a mass ratio of 100: 0.1-5 and then enter a jet mill through a batch feeder, the modified material comprises a polymer and micromolecular amine, and the mass ratio of the polymer to the micromolecular amine is 100: 5-10; and step 2, after being crushed by the jet mill, the materials enter a demagnetizer in a free falling manner under the action of gravity to be demagnetized. The nano carbon material has better dispersity and lower metal impurity content.

The utility model discloses automatic demagnetization conveying equipment for a hydraulic support stand column. The automatic demagnetization conveying equipment comprises a conveying assembly. Through the combination of the transportation assembly, the demagnetizer, the transportation tray, the water collecting tank and the stand column, the hydraulic support stand column demagnetizer realizes the integrated operation from transportation to demagnetization of the hydraulic support stand column. According to the integrated design, intermediate links are reduced, the production efficiency is improved, the equipment can automatically complete demagnetization treatment of the stand column, manual intervention is reduced, meanwhile, the production safety is improved, and the trundles are fixedly installed on the left side of the bottom of the water collecting tank, so that the equipment is convenient to move and position; the transportation tray and the transportation assembly are fixedly installed, and the stability of the stand column in the conveying process is ensured; the demagnetizer is located at the top of the conveying assembly, the stand columns can be demagnetized conveniently, the equipment is suitable for hydraulic support stand columns of different specifications and sizes, high universality and adaptability are achieved, and the problem that in the stand column assembling process, a stand column demagnetizing technology and specific demagnetizing equipment are lacked is solved.

The application belongs to the technical field of elutriation equipment, and particularly relates to an electromagnetic ore dressing device, which comprises a desliming magnetic separation column, an intermediate treatment device and a cleaning magnetic separation column. The intermediate treatment device comprises a rack, an intermediate hopper, a jet device and a scattering cabin. The intermediate hopper and the jet device are fixedly connected with the rack. The concentrate discharge pipe of the desliming magnetic separation column is sequentially communicated with a harmonic wave demagnetizer and a feeding pipe. The concentrate discharged from the concentrate discharge pipe of the desliming magnetic separation column enters the intermediate hopper through the harmonic wave demagnetizer and the feeding pipe in sequence. The jet pipe of the jet device is communicated with the scattering cabin. A lining plate is arranged in the scattering cabin and oppositely arranged with the jet pipe. The scattering cabin is provided with a discharge hopper which is communicated with the ore feeding opening of the cleaning magnetic separation column through a pipeline. The short and thick desliming magnetic separation column and the slender cleaning magnetic separation column are combined, and the magnetic field and the flushing water are independently adjusted, so that the quick desliming and high-precision separation are considered, and the adaptability is high.

The application discloses a kind of fine-grained vanadium-titanium iron concentrate filtration pretreatment methods, comprising the following steps: fine-grained vanadium-titanium iron concentrate and water are mixed and the mass fraction of the fine-grained vanadium-titanium iron concentrate in the obtained suspension is adjusted to predetermined concentration, obtain first slurry;First slurry is passed through demagnetizer, and demagnetization is carried out, and second slurry is obtained;Second slurry is treated with ultrasonic wave, and third slurry is obtained;Third slurry is mixed with a predetermined amount of flocculating agent and then sent into a magnetic separation column after stirring, the operating parameters of the magnetic separation column are adjusted, the height difference between the mixed slurry in the magnetic separation column cylinder and the overflow surface is controlled, and the mass fraction of fine-grained vanadium-titanium iron concentrate in the fourth slurry flowing out of the magnetic separation column is controlled to be a predetermined concentration, and the flocculating agent is prepared from corn starch;Vacuum filtration is carried out on the fourth slurry.It is beneficial to increase the agglomeration diameter of fine-grained vanadium-titanium iron concentrate particles before filtration, reduce the moisture content of the product obtained after filtration of fine-grained vanadium-titanium iron concentrate, and improve the filtration efficiency.

The bearing demagnetizing, cleaning and drying all-in-one machine comprises a protective box body, a conveying device is installed in the protective box body, a feeding opening is formed in the front side of the protective box body, a demagnetizer is installed on the front side of the protective box body, a sprayer is installed on the protective box body, a soaking box is installed in the protective box body, and a dryer is installed on the protective box body. A discharging channel is installed on the rear side of the protection box body, and an electric control box is installed on the front side of the protection box body. The bearing processing device has the beneficial effects that a bearing can be driven to pass through the inner side of the demagnetizer, the lower portion of the sprayer, the inner side of the soaking box and the lower portion of the dryer through the conveying device, operation of multiple procedures can be conducted on the bearing at a time, then the bearing processing efficiency can be improved, the bearing is driven to move through the conveying device, bearing movement can be reduced, abrasion can be reduced, and the bearing processing efficiency can be improved. The upper end of the bearing can be sprayed through the sprayer, the bearing can be soaked through the soaking box, then the bearing can be cleaned in all directions, and the quality of the bearing is guaranteed.

The application belongs to the technical field of material processing, and discloses a demagnetizer and a slurry demagnetization method. The demagnetizer comprises a fixing frame, a material pipe, a magnetic rod device, a scraper device, a power driving device and a limiting device. The material pipe is arranged on the fixing frame, and the material pipe has a material channel. The magnetic rod device comprises a rotating table and a magnetic rod connected with the rotating table. The rotating table is rotatably arranged on the fixing frame, and the magnetic rod is arranged in the material pipe. The scraper device comprises a rotating piece, a scraper and a transmission piece. The magnetic rod is arranged in a sliding hole of the scraper. The rotating piece is rotatably arranged on the rotating table, and the rotating piece is in transmission connection with the scraper through the transmission piece. The power driving device is connected with the rotating piece and drives the scraper to move axially. When the limiting device is in a first position, the rotating table is fixed on the rotating piece through the limiting device. When the limiting device is in a second position, the rotating table is fixed on the fixing frame through the limiting device. The demagnetizer does not need to reserve lifting space of a scraper driving shaft above the demagnetizer, so that the overall height of the demagnetizer can be reduced.

The invention discloses a demagnetizing and filtering trolley, and relates to the technical field of circulating water filtration, the demagnetizing and filtering trolley comprises a trolley body and a demagnetizing device, ball valves are symmetrically arranged right above the trolley body, the output ends of the ball valves are connected with injection pipe fittings, the outer sides of the injection pipe fittings are connected with a supporting frame, the supporting frame is arranged right above the trolley body, and the demagnetizing device is arranged on the trolley body. A circulation mechanism is arranged over the vehicle body and drives liquid to flow through the demagnetizer, and a high-intensity magnetic field environment is constructed through a built-in magnet assembly of the circulation mechanism. When slag needs to be discharged, power is cut off to demagnetize the magnet assembly, and under the action of fluid pressure or gravity, metal particles adsorbed on the surface of the magnet flow to the blow-down valve along with liquid to complete impurity emptying operation. The circulating mechanism drives the liquid to continuously flow through the demagnetizer to form a circulating flow path, so that ferromagnetic impurities in the liquid have more opportunities to be in contact with a high-intensity magnetic field area, the demagnetizing effect is further improved, and it is ensured that the ferromagnetic impurities in the liquid are fully adsorbed.

The utility model provides a bearing demagnetization device, which belongs to the field of bearing demagnetization processing equipment, and comprises supports, the supports are symmetrically arranged, the supports are connected with a conveying assembly, the conveying assembly is connected with a limiting clamping assembly, and the supports are connected with a frame type demagnetizer. Then, the clamping plate at one end is pulled, when the clamping plate is pulled, the clamping plate drives the connecting rod to slide in the through hole, one end of the connecting rod extrudes the spring, the clamping plate is used for clamping and fixing materials needing to be clamped, and when the clamping plate is loosened, the spring rebounds to release pressure, the connecting rod is pulled back, and the materials needing to be clamped are clamped and fixed. A clamping plate connected to a connecting rod is attached to the surface of a material needing to be demagnetized, the material is clamped and fixed, after the material is clamped to a limiting clamping assembly, a driving motor is started, the output end of the driving motor drives a rotating shaft to rotate, the rotating shaft drives a chain wheel to rotate, the chain wheel drives a synchronous belt to move, and the synchronous belt drives a placement plate to move.

The utility model relates to the field of aluminum foil production, in particular to a magnetic substance winding and removing device of a splitting machine, which comprises a support, a winding roller is arranged in the support, and limiting grooves are arranged at two ends of the winding roller on the support. The pressing frame is locked through the locking frame, the rotating sleeve pushes the winding roller to abut against the position between the first supporting wheel and the second supporting wheel through the overturned pressing frame, then rapid fixing of the winding roller is completed, and the overturning air cylinder drives the frame type demagnetizer to overturn so as to demagnetize aluminum foil wound on the winding roller. The frame type demagnetizer is arranged on the frame type demagnetizer, magnetic substances attached to the top of the aluminum foil lose magnetism, the magnetic substances on the top of the aluminum foil fall off along with rotation of the winding roller, meanwhile, the electromagnetic block on the frame type demagnetizer is used for adsorbing the bottom of the aluminum foil to be wound, and therefore the magnetic substances on the bottom of the aluminum foil are removed and prevented from being wound into an aluminum coil.

The present invention relates to an apparatus for demagnetizing magnetized magnetic particles. The apparatus demagnetizes and disperses magnetic particles to increase the probability of detecting the magnetic particles. The apparatus includes (a) multi-well plate with single or multiple wells arranged, (b) magnetic particles dispensed into the multi-well plate, and (c) a support means supporting the multi-well plate. A demagnetizer capable of moving up and down is provided below the support means. The support means includes a seesaw-type shake

The utility model relates to an ultra-pure polymer circulating, homogenizing and demagnetizing system which comprises a homogenizing stock bin, and a discharge port of the homogenizing stock bin is connected with a feed end of an automatic demagnetizing device through a pipeline; the discharging end of the automatic demagnetizing device is provided with two branch pipes, and the branch pipes comprise a qualified material output branch and a finished product collecting unit, and the circulating branch is communicated with the homogenizing stock bin through a material returning pipeline and is used for returning the substandard materials to the homogenizing stock bin for secondary homogenizing and demagnetizing treatment. Compared with the prior art, the system has the advantages that the automatic demagnetizing device and the circulating branch are arranged in the system, so that efficient, continuous and clean industrial production is realized, and the system is particularly suitable for large-scale production of high-end polyolefin products such as ultra-clean high-purity polyethylene.

1. Name of the product in this design: Demagnetizer. 2. Purpose of this design: To demagnetize metal products. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the key design points: Design 1 3D view. 5. Design 1 is designated as the basic design.

The invention discloses a passive portable generator rotor large shaft demagnetizer and a demagnetization method thereof, and belongs to the technical field of generator maintenance. The demagnetizer comprises a closed-loop coil composed of a superconducting flexible cable, a hand-operated rotary permanent magnet excitation device, a refrigerant and a detection device. The zero resistance characteristic and the flux pump effect of the superconducting material are utilized, and a demagnetizing magnetic field is generated for charging and discharging of the coil through the hand-cranking permanent magnet. The refrigerant system maintains a superconducting state, and the detection device monitors residual magnetism. During demagnetization, the coil is cooled firstly, after residual magnetism is detected, a proper coil is selected for installation, current charging and discharging are controlled, and attenuation is conducted according to stages till the residual magnetism reaches the standard. The demagnetizer gets rid of dependence on a heavy power supply and a connecting line thereof, is convenient to move to a plurality of units for overhaul and overhaul during power failure, is small in volume and mass, and facilitates demagnetization operation in a narrow space of an on-site generator.

The invention provides a steam turbine rotor demagnetization method which is easy to operate and can quickly and efficiently complete steam turbine rotor demagnetization, and relates to the technical field of demagnetization. The steam turbine rotor demagnetization method comprises the steps of rotor shaft demagnetization, specifically, direct current coils are wound at the two ends of a rotor shaft respectively, and then the two ends of the rotor shaft are demagnetized in sequence through a demagnetizer by means of a direct current coil method till residual magnetism meets the requirement; wherein in the demagnetization process, a demagnetizer wiring terminal is alternately connected positively and negatively, so that magnetic poles of a magnetic field generated by the direct-current coil are alternately changed; demagnetizing the rotor blade: winding a lead on the columnar iron core to form an electromagnetic coil; when the rotor blade is demagnetized, one end of the columnar iron core abuts against one side of the tail end of the rotor blade, then alternating current is led into the wire, the columnar iron core becomes an electromagnet, and the rotor blade is demagnetized through a demagnetizer by means of an alternating current demagnetization method till the residual magnetism of the rotor blade meets the requirement.

This utility model relates to the field of lithium salt impurity removal technology. Addressing the problem that excessive magnetic impurities in the washing water after crude lithium salt purification affect the purity of the lithium salt product during recycling, this invention specifically discloses a secondary evaporation washing water recycling system for lithium salt purification. The system includes a primary evaporation crystallization system and a secondary evaporation crystallization system connected in sequence. The discharge end of the secondary crystallization evaporation system is sequentially connected to a demagnetizer, a distiller, and a belt centrifuge. The discharge end of the belt centrifuge is equipped with a reflux pipe, the water outlet of which is connected to both the primary and secondary evaporation crystallization systems via multiple branch pipes. This further treats and removes impurities from the secondary evaporation washing water, which is then fed into both evaporation crystallization systems, enabling the reuse of the washing water and preventing the loss and waste of residual lithium elements.

The utility model discloses a device for automatically cleaning a magnetic core of a powder demagnetizing machine by applying a sound wave principle. The device comprises a beam sound conduction cylinder and a titanium alloy sound wave generator, the beam sound conduction cylinder is trumpet-shaped, and the titanium alloy sound wave generator is mounted at one end, with a smaller opening diameter, of the beam sound conduction cylinder; the outer side of the other end of the sound transmission cylinder is fixedly connected with a connecting flange; the side, close to the titanium alloy sound wave generator, of the connecting flange is fixedly connected with a sealing protection cover, the sound restraining conduction barrel and the titanium alloy sound wave generator are both located in the sealing protection cover, and an air inlet connector of the titanium alloy sound wave generator extends out of the sealing protection cover and is in sealing connection with the sealing protection cover. The directional gas sound wave generator and the sound wave beam set device are utilized, materials adsorbed on the medium net are removed through sound wave energy, thorough removal can be achieved, foreign matter cannot be generated, equipment cannot be damaged, and meanwhile the device is easy and convenient to use, simple in structure and convenient to produce and manufacture.

The utility model relates to a double-pulse demagnetizer, which belongs to the technical field of demagnetizing equipment and comprises a pipe body, a demagnetizing coil is wound on the pipe body and comprises a first coil and a second coil, the first coil and the second coil are arranged in parallel and share a first terminal and a second terminal, and the first terminal and the second terminal are connected in parallel. The device is mainly used for ore pulp of a dressing plant, is provided with pipeline-type flat copper double coils, rapidly charges and discharges a capacitor bank under the cooperation of an oscillation circuit, enables the double coils to work simultaneously, adjusts the double coils according to the permutation and combination optimization principle of a magnetic system, operates in the optimal current flow direction, and forms an annular strong magnetic field; meanwhile, the tolerance of a control system and a demagnetizing coil is improved, and an extremely high demagnetizing magnetic field is formed by strong current and high power, so that a good demagnetizing effect is achieved, and the maximum output power can reach 22kw.

A system for removing iron ore particles adhered by magnetic hysteresis to a magnetic matrix of a vertical magnetic separator, the vertical magnetic separator having a separation ring with a magnetic matrix; an ore feed inlet an ore accumulation vessel positioned in the lower portion of the magnetic matrix and having an outlet for low magnetic-susceptibility material; a magnetic field-generating device adapted to generate a magnetic field in the region of the accumulation vessel; at least one collection tray positioned internally to the magnetic matrix and adapted to collect material with greater magnetic susceptibility detached from the magnetic matrix; and a collecting container adapted to receive the material with greater magnetic susceptibility from at least one collecting tray. The system further includes a demagnetizer; a mechanical device for cleaning the magnetic matrix positioned at a position subsequent to the demagnetizer; and at least one device generating jets of compressed air.

1. Name of the product in this design: Demagnetizer (Super Strong). 2. Application of this design: for use in ultra-powerful demagnetizers. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model is applicable to the technical field of electromagnetic separation, and provides a high-field-intensity full-automatic slurry electromagnetic iron remover which comprises an equipment main body, the equipment main body comprises a material passing cavity, a demagnetizer and a feeding pipe, the feeding pipe and the material passing cavity are both communicated with the demagnetizer, and a coil and a magnetic medium are arranged in the demagnetizer; the stirring device comprises a sealing cover, a stirring piece, rotating wheels, a transmission belt, a rotating motor and a belt rotating rod, one rotating wheel is connected to the belt rotating rod, and an output shaft of the rotating motor is connected to the other rotating wheel; according to the stirring device, when raw material slurry enters the material passing cavity, the started rotating motor drives the rotating wheel to rotate, so that the belt rotating rod and the stirring pieces distributed on the belt rotating rod axially rotate around the belt rotating rod, the raw material slurry in the material passing cavity is stirred, and the phenomenon that the raw material slurry is possibly distributed unevenly or agglomerated is avoided.

The application discloses a permanent magnet rail degaussing device and relates to the technical field of rail degaussing.The permanent magnet rail degaussing device comprises a shell and a degaussing assembly arranged on the inner wall of the shell; the shell comprises a top mounting plate and first and second side mounting plates arranged on the two sides of the bottom of the top mounting plate; the bottom of the top mounting plate is provided with a pulley which slides along the rail; the degaussing assembly comprises a top degaussing group, a rail head degaussing group and a rail waist degaussing group which generate continuously commutated degaussing magnetic fields respectively; the top degaussing group is arranged on the top mounting plate; and the first and second side mounting plates are both provided with the rail head degaussing group and the rail waist degaussing group oppositely. The top degaussing group, the rail head degaussing group and the rail waist degaussing group generate continuously commutated degaussing magnetic fields respectively, so that the main circuit breaker of the motor train unit does not abnormally jump, thereby solving the problem that the existing degaussing method and degaussing device cannot be applied to the rail.

The utility model relates to a demagnetizer with an internal spiral blade, which comprises a demagnetizer pipe body, a demagnetizing coil arranged outside the demagnetizer pipe body and connecting flanges arranged at two ends of the demagnetizer pipe body, and is characterized in that the internal spiral blade is arranged in the demagnetizer pipe body. The demagnetizer disclosed by the utility model has the advantages that ore pulp flows through the demagnetizer pipe body, a variable demagnetizing magnetic field is generated under the action of the coil, and iron ore particles in the ore pulp are demagnetized under the action of the demagnetizing magnetic field. The inner spiral blade arranged in the demagnetizer pipe body prolongs the route length of ore pulp flowing through the demagnetizing coil, so that the ore pulp can obtain longer demagnetizing time, the demagnetizing effect is improved, meanwhile, the ore pulp flows through the spiral blade in the demagnetizing coil, disturbance to the ore pulp is intensified, and magnetic agglomeration in the ore pulp is dispersed more easily.

A tensile body inspection device (1) is provided with a magnetic sensor (30) and a demagnetizer (2), the magnetic sensor (30) having: a detection element (31) that faces an object (6) including a tensile body (61) and detects a magnetic field; and a detection magnet (32) that generates a magnetic field acting on the object (6), and the demagnetizer (2) faces the object (6) at a position separated from the magnetic sensor (30) in the extension direction of the tensile body (61) and demagnetizes the tensile body (61).

This invention discloses a method for removing shot adsorbed on the lower surface of shot-blasted steel plates, relating to the field of steel plate surface treatment technology. The method includes: fixing at least one demagnetizer on the exit side of a shot blasting machine, with a pre-existing gap between the demagnetizer and the lower surface of the steel plate; when the shot-blasted steel plate reaches a preset position, activating the demagnetizer to generate an alternating magnetic field to demagnetize the steel plate, and controlling the steel plate to run at a first speed; after the steel plate has completely left the demagnetizer, stopping the demagnetizer and activating air blowing to clean the surface of the demagnetizer. This invention, through the organic combination of online demagnetization and automatic blowing, achieves thorough removal of shot adsorbed on the lower surface of nickel-containing steel plates, fundamentally solving the quality problem of shot indentation.

The invention relates to the technical field of magnetite separation, in particular to a method for weakening magnetic agglomeration before magnetite separation, which comprises the following steps of: connecting an air supply pipeline to a pulp supply pipeline behind a demagnetizer, and blowing air input into the air supply pipeline to enable pulp to form turbulent flow; according to the method, magnetic agglomeration of mineral particles in ore pulp is blown away through wind power blowing, residual magnetism, generated by previous magnetic separation, of magnetic materials in the ore pulp is weakened through mutual collision, the wind pressure P of wind power blowing is 0.30-2 MPa, and the pipeline caliber air volume Q is 0.5-10 m < 3 > / min. The method has the beneficial effects that the magnetic agglomeration phenomenon is weakened; magnetic inclusions in the ore pulp are destroyed or eliminated; and the grade of later-stage sorted concentrate is improved.

A system and method of demagnetizing a mold machine for forming a magnetic mold compound of electronic devices is provided. The method includes performing a molding process with a mold machine to form a magnetic mold compound on electronic devices and detecting magnetic fields in a mold chase of the mold machine via a gaussmeter. The molding process of the mold machine is ceased responsive to determining that a strength of at least one detected magnetic field exceeds a threshold and the mold chase is demagnetized via a demagnetizer.