184 results about "Magnetic media" patented technology

The utility model discloses a vertical magnetic cyclone precipitation combined device which comprises a secondary precipitation tank and a cyclone separator arranged in the secondary precipitation tank, the upper part of the cyclone separator is a cylindrical barrel, the lower part of the cyclone separator is of a conical structure, and an underflow outlet is formed in the bottom of the conical structure; a rotary magnetic system capable of generating spiral downward magnetic field force is arranged outside the cylindrical barrel; the inner wall of the cylindrical barrel is provided with a spiral magnetic conductive piece used for magnetism gathering and current stabilizing. A central overflow barrel is mounted in the cylindrical barrel, and an overflow discharge hole communicated with the secondary precipitation tank is formed in the top of the central overflow barrel; the side surface of the cylindrical barrel is connected with a tangential mud inlet pipe which is connected with a water inlet; a water outlet is formed in the top of the secondary precipitation tank. The device can be used for recovering a magnetic medium in magnetic coagulating sedimentation or a magnetic biofilm carrier in a magnetic biochemical system. The device has the characteristics of reasonable structural design, low energy consumption and wide application range, and is high in separation and recovery efficiency of the magnetic medium and the magnetic biofilm carrier.

The invention discloses a vertical ring magnetic separation device adopting a saddle-shaped coil and a magnetic separation method of the vertical ring magnetic separation device, and relates to the technical field of mine metallurgy, the vertical ring magnetic separation device comprises an integral support, a magnet system, a rotating ring, a feeding assembly and a discharging assembly, and the magnet system is fixedly arranged on the integral support and surrounds part of the rotating ring; the magnet system comprises at least one saddle-shaped coil, and the arc-shaped face, facing the rotating ring, of the saddle-shaped coil is matched with the ring face of the rotating ring. The saddle-shaped coil is adopted, the arc-shaped working face of the saddle-shaped coil is matched with the height space of the annular contour of the rotating ring, magnetic field distribution is fundamentally optimized, magnetic field energy is highly concentrated and accurately acts on a magnetic medium filled in the rotating ring, the field intensity far exceeding that of a traditional runway-shaped coil can be obtained, and the collecting capacity of weak magnetic minerals is remarkably improved; the optimization of the magnetic field further reduces the dependence on the magnetic conductive yoke, so that the overall structure weight of the magnet system is reduced, and the cost is reduced.

Mode hop detection is provided. A device includes circuitry to receive, from a reader element an indication of one or more properties of a magnetic medium detected by the reader element. The device includes circuitry to determine an envelope of the signal. The device includes circuitry to adjust, responsive to the envelope, a current provided to a laser configured to heat the magnetic medium.

The invention provides a heat dissipation type magnetic medium sealing device, and relates to the technical field of sealing devices.The heat dissipation type magnetic medium sealing device comprises a shell, a rotating shaft and a magnetic sealing assembly; the rotating shaft is pivotally connected with the cavity, at least one end is located outside the shell, the rotating shaft is provided with a heat exchange channel, and at least part of the heat exchange channel is located outside the shell; the magnetic sealing assembly is matched with the cavity and sleeves the rotating shaft, a sealing gap is defined between the inner circumferential surface of the magnetic sealing assembly and the outer circumferential surface of the rotating shaft, and a magnetic medium is adsorbed in the sealing gap; the heat exchange channel is arranged adjacent to the sealing gap, a phase change medium is arranged in the heat exchange channel, the phase change medium has a first state and a second state, and the phase change medium can be switched between the first state and the second state so as to exchange heat with the magnetic sealing assembly. Magnetic medium sealing heat exchange can be enhanced, the heat dissipation effect is good, and the linear speed and the working temperature of magnetic medium sealing can be improved.

The invention discloses a dredging device for an ore unloading water pipe of a vertical ring high-gradient magnetic separator, which belongs to the technical field of flushing ore unloading equipment, and comprises a separation rotating ring capable of rotating, and a magnetic medium box is arranged on the circumferential surface of the separation rotating ring; a plurality of water spraying holes are formed in the bottom of the ore discharging water pipe; the movable cross beam is arranged in the ore unloading water pipe, a plurality of conducting columns are arranged on the movable cross beam, and a high-pressure air channel is formed in the movable cross beam; an air injection hole communicated with the high-pressure air channel is formed in the conduction column, and a first valve is arranged between the air injection hole and the high-pressure air channel; the movable cross beam can move between a first position and a second position; at the first position, the conducting column is separated from the water spraying hole; at the second position, the conducting column extends into the water spraying hole, and the first valve is in an open state; the conducting column can extend into the water spraying hole to directly eject impurities in the water spraying hole, meanwhile, ore unloading water quickly flows through the gap, high-pressure gas is sprayed out of the gas spraying hole, and the impurities on the inner wall of the water spraying hole are thoroughly removed through the combined action of the two.

The invention discloses an integrated treatment process for heavy metal wastewater. The integrated treatment process comprises the following steps: step 1, pretreatment; 2, biological agent treatment; step 3, air flotation and magnetic separation; step 4, precipitation and separation; step 5, post-processing; step 6, magnetic medium separation and recovery; wherein in the second step, a biological agent adding unit and a hydrolysis reaction unit are included, the biological agent treatment unit comprises a stirrer, an agent adding ring and a guide cylinder, the stirrer comprises a stirring motor and a stirring impeller, the stirring impeller is connected with the stirring motor and inserted into the guide cylinder, and the agent adding ring is connected with the stirring impeller and synchronously rotates with the stirring impeller; the flow guide cylinder is provided with a turbulent flow ring, the turbulent flow ring comprises a ring body and cutting teeth, the ring body is installed in the flow guide cylinder, and the cutting teeth are arranged on the ring body. Compared with the prior art, the purposes of efficient treatment, stable water outlet, land occupation and cost saving and convenience in installation and extension are achieved.

A magnetic medium is described which includes a thin film magnet structure formed of a ferromagnetic alloy or compound. The thin film magnet structure includes one or more ferromagnetic domains and is coupled to one or more optical structures. Each of the one or more ferromagnetic domains have a magnetization that is switchable between two or more states. Each of the one or more optical structures is configured to increase absorbance of light at a target wavelength in the thin film magnet structure, such that in response to illumination of a ferromagnetic domain with continuous-wave light including the target wavelength, that ferromagnetic domain undergoes all-optical magnetic switching.

A lubricant for magnetic media is synthesized using click chemistry. In one aspect the lubricant is according to general formula (I):where Rc is a fluorinated or non-fluorinated divalent linking segment; where each Re1 and Re2 is a click linker moiety that can be triazole or sulfone; n is from 2 to 50; where each Rb1 and Rb2 is an optionally non-fluorinated divalent linking segment optionally comprising at least one least one first anchoring functional group engageable with a protective overcoat of a magnetic recording medium; and where each of Rv1 and Rv2, when present, independently comprises a moiety having at least one second anchoring functional group engageable with the protective overcoat of the magnetic recording medium. The click linker moiety may also functional as an anchoring functional group.

The magnetic separation column comprises an ore feeding hopper, a tailing overflow groove, a separation column body, an electromagnetic system, a concentrate opening and a water feeding pipe, the ore feeding hopper is arranged at the top of the separation column body, the lower portion of the separation column body is communicated with the separation column body, the tailing overflow groove is formed in the upper portion of the separation column body, the concentrate opening is formed in the bottom of the separation column body, and the electromagnetic system is arranged outside the separation column body in a sleeved mode. The water supply pipe is inserted into the lower part of the sorting column; the device is characterized by further comprising a magnetism gathering medium body, the magnetism gathering medium body is fixedly arranged in the separation column, and the top of the magnetism gathering medium body corresponds to the uppermost electromagnetic system. According to the utility model, the phenomenon that fine-particle magnetite moves upwards along with rising water flow and enters tailings to cause black running is effectively avoided, so that the recovery rate of iron ore concentrate is increased, and the grade of the tailings is reduced.

The present invention relates to a piston dry superconducting magnetic separator and a dry magnetic separation and impurity removal method thereof, wherein the piston dry superconducting magnetic separator comprises a piston-magnetic medium structural assembly, a precision tube assembly, and a superconducting magnet; the precision tube assembly passes through the superconducting magnet and is relatively fixed in position; a piston-magnetic medium structural assembly capable of reciprocating along an axial direction is installed in the precision tube assembly; three groups of inlets and outlets are provided on the precision tube; the piston-magnetic medium structural assembly is provided with two separation zones along the axial direction, and the two separation zones are connected together; a separation zone central axis is provided in the separation zone, piston flanges are provided at both ends of the separation zone central axis, and magnetic medium is filled between the two piston flanges; a sliding fit is formed between the outer wall of the piston flange and the inner wall of the precision tube. The dry magnetic separation and impurity removal method, namely, using the above-mentioned piston dry superconducting magnetic separator to dryly remove impurities from high-purity powder, shortens the impurity removal process of the high-purity powder, and improves production efficiency.

A magnetic suction head includes a connecting wire, both ends of the connecting wire are provided with connecting heads, and two sets of the connecting heads are fixedly connected with the connecting wire through insulating layers respectively. Outer walls of two sets of the insulating layers are provided with magnetic sleeves, and the outer walls of the two sets of the insulating layers are magnetically suctioned together. By setting the magnetic sleeves at the two sets of the connecting heads, and the magnetic sleeves are molded by injection molding of a magnetic media and a plastic body. On the one hand, magnetic distribution is uniform, which is convenient for magnetic suction of the two sets of magnetic suction heads. On the other hand, it can reduce a weight and a structural dimension of the magnetic suction head, thereby improving usage experience.

The invention discloses a dielectric composite electromagnetic interference suppression winding magnetic ring, and relates to the field of electronic components. The device comprises a winding belt, and the winding belt is arranged on the periphery of a suppressed cable in a winding mode to form a winding magnetic ring structure. One of the two modes is as follows: (1) a soft magnetic material-polymer composite belt: an electromagnetic functional material is a soft magnetic material; the winding belt is a magnetic medium composite belt material formed by compounding a soft magnetic material and a high polymer material. And (2) a soft magnetic material / dielectric material / high-molecular double-layer composite belt and a grounding metal layer, wherein the electromagnetic functional material comprises a soft magnetic material and a dielectric material. The winding belt is formed by compounding a soft magnetic material and a dielectric material with a high polymer material, the soft magnetic material and the high polymer material are compounded to form a magnetic dielectric layer, and the dielectric material and the high polymer material are compounded to form a dielectric medium layer; and the magnetic medium layer and the dielectric medium layer are overlapped along the thickness direction to form a double-layer composite winding belt. The resonant frequency and the insertion loss can be flexibly adjusted through the structure size and the material parameters.

The present application belongs to the technical field of quartz sand sorting process and equipment, and particularly relates to a medium box dismounting device specially used for a vertical ring high gradient magnetic separator. The dismounting of the medium box of the magnetic separator completely depends on manual operation, which is complicated and inefficient, and the medium box is easily tilted, the nut is wrongly toothed or the mounting thread is damaged due to unstable clamping. The present application provides a medium box dismounting tool, which can tighten or loosen the fixing nut while clamping the medium box, thereby significantly improving the dismounting efficiency and safety. The dismounting device comprises a pair of clamping arms, the lower ends of the clamping arms are provided with clamping portions, and the medium box is arranged between the pair of oppositely arranged clamping portions of the pair of clamping arms to realize fixation. The present application can conveniently grasp, assemble and fix the magnetic medium box of the magnetic separator, reduces the subjective error probability of manual operation, saves time and effort, and is more convenient to take and operate in cooperation with a mechanical arm, can more labor-savingly align the assembly hole position, and more quickly rotates and tightens the nut.

The present disclosure relates to the pretreatment of a magnetic recording head assembly for a magnetic media drive. The magnetic recording head assembly comprises a slider with a media-side surface (MFS), an upper surface opposite the MFS, a trailing-edge surface adjacent to the upper surface, and an optical grating arranged on the trailing-edge surface. A vertical resonator surface-emitting laser device (VCSEL device) is mounted on the trailing-edge surface of the slider. The VCSEL device is aligned with the optical grating. A magnetic recording head, comprising a waveguide and a near-field transducer (NFT) coupled to the waveguide, is arranged on the trailing-edge surface of the slider. The VCSEL device is capable of emitting a plurality of phase-coherent lasers onto the optical grating.The optical grating is capable of directing the emitted laser beams at approximately 90 degrees to the waveguide.

This invention relates to the field of fluid impurity removal detection technology, and discloses an online detection method and system for the impurity removal efficiency of a fluid iron separator. The method includes: measuring the instantaneous content of magnetic impurities at the inlet and outlet in real time using a high-frequency electromagnetic induction sensor; monitoring the change in magnetic flux on the surface of the magnetic medium in real time using a miniature fluxgate sensor array; calculating the apparent impurity removal efficiency based on the impurity content at the inlet and outlet using an edge computing gateway, and simultaneously calculating the magnetic medium adsorption saturation based on the magnetic flux decay curve; weighting the apparent impurity removal efficiency using the magnetic medium adsorption saturation as a weight for adsorption effectiveness; when the magnetic medium adsorption saturation is lower than a preset saturation threshold, attenuation is performed according to the ratio of the apparent impurity removal efficiency multiplied by the magnetic medium adsorption saturation to the preset saturation threshold to obtain the true impurity removal efficiency. This invention solves the problem in existing technologies that cannot distinguish whether impurities are effectively retained or merely pass through the iron separator, achieving accurate detection of the true impurity removal efficiency.

A data storage device comprises a magnetic medium and a head configured to be actuated over the magnetic medium. The head comprises a write element and a write driver configured to generate a write current to be applied to the write element. The write driver comprises a data switch section configured to switchably output low-level signals and high-level signals, and a stationary cascode section configured to receive the low-level signals and high-level signals from the data switch section and to generate a cascode pass through current. The data switch section comprises low voltage CMOS devices and the stationary cascode section comprises high voltage CMOS devices.

The invention discloses a three-dimensional network structure magnetic fiber carrier reinforced micro-plastic magnetic separation removal method, which is characterized in that Fe3O4 nanoparticles are selectively precipitated among sepiolite fiber bundle layers by controlling a coprecipitation process, and a wedging effect is generated to realize controllable stripping of fiber bundles, so that a three-dimensional network structure magnetic carrier is formed; a mechanical interlocking structure is formed on the surface of the flexible fiber and the micro-plastic, and the pH of a water body is self-adaptively regulated and controlled through the amphoteric ionization characteristic of silicon hydroxyl; enabling the magnetic aggregate suspension to sequentially pass through a multi-stage gradient magnetic field consisting of a pre-magnetization field, a main separation field and a fine scavenging field, and controlling the flow rate to enable the aggregate to form a stable filter cake layer on the surface of a magnetism gathering medium, so as to realize efficient separation of the micro-plastic; and the magnetic gathering medium capturing the aggregate is subjected to heat treatment, so that the micro-plastic is thermally decomposed, the magnetic carrier is directly recycled, the magnetic performance is improved, and regeneration reinforcement is realized. The micro-plastic removal rate reaches 99% or above, the performance is stable after multiple cycles, and the method is suitable for treating various micro-plastic-containing water bodies.

The invention discloses a target object control method and device, and belongs to the technical field of computers. The target object control method comprises the following steps: constructing at least one sampling path corresponding to a target to-be-measured point based on the target to-be-measured point in a plurality of to-be-measured points in a target area corresponding to a magnetic medium object; the sampling path comprises at least one sampling point; based on the at least one sampling point included in each sampling path corresponding to the target to-be-measured point, obtaining a magnetic physical quantity corresponding to the target to-be-measured point; and controlling the target object based on the magnetic physical quantity. The target object control method can be suitable for various computer surface geometric discrete formats, accurate, efficient and large-scale magnetic physical quantity solving can be completed in various scenes, and therefore the control precision and accuracy of virtual or entity objects are improved.

The magnetic medium sealing device suitable for the hollow rotating shaft comprises a shell, the hollow rotating shaft and a magnetic sealing assembly, the hollow rotating shaft is arranged in the shell in a penetrating mode, a first permanent magnet surrounds the periphery of the hollow rotating shaft, and a first gap is reserved between the first permanent magnet and the hollow rotating shaft; the second permanent magnet is located on the side, facing the shell, of the hollow rotating shaft, a second gap is reserved between the second permanent magnet and the end of the hollow rotating shaft, the third permanent magnet surrounds the inner circumference of the hollow rotating shaft, a third gap is reserved between the third permanent magnet and the hollow rotating shaft, and the outer circumferential face of the hollow rotating shaft is provided with first pole teeth protruding towards the first gap. The end face of the hollow rotating shaft is provided with second pole teeth protruding towards the second gap, and the peripheral face of the third permanent magnet is provided with third pole teeth protruding towards the third gap. According to the magnetic medium sealing device suitable for the hollow rotating shaft, three-stage sealing is formed on the inner side, the outer side and the end of the hollow rotating shaft, and the requirements for sealing reliability and equipment light weight are met.

The invention discloses a gangue magnetic separator, and relates to the technical field of coal dressing, the gangue magnetic separator comprises a magnetic separator, a feeding piece and a stirring piece, the magnetic separator is fixedly arranged on the ground, the feeding piece is fixedly arranged on the ground, the feeding piece is located right above the magnetic separator, the feeding piece can uniformly feed materials to be sorted into the magnetic separator, the stirring piece is rotationally arranged in the feeding piece, and the stirring piece can stir the materials to be sorted. The stirring piece can prevent the materials from being blocked in the feeding piece; the magnetic medium recovery device has the effect of improving the recovery rate when the magnetic medium is recovered.

The present disclosure generally relates to a magnetic recording head for magnetic media, such as a magnetic media drive. The head has a main pole, trailing shield, leading shield, first side shield, and second side shield. One side shield is electrically connected to the trailing shield and electrically disconnected from the leading shield. The other side shield is electrically connected to the leading shield and electrically disconnected from the trailing shield. The side shields are electrically connected through a hot seed layer and / or a nonmagnetic electrically conductive layer that is electrically disconnected from the main pole. Such an arrangement results in a current path from the trailing shield, through the side shields, around the main pole, and to the leading shield, which results in reduced resistance.

This invention relates to a method for manufacturing high-silicon Fe-based magnetic media using a remelting-rescanning strategy via laser 3D printing, belonging to the fields of advanced manufacturing and mineral magnetic separation. This invention uses high-silicon Fe-based magnetic media powder as raw material. During laser additive manufacturing, the same powder layer is scanned multiple times. After the initial melting, the layer is scanned at least once more using the same laser scanning path, resulting in the high-silicon Fe-based magnetic media. This invention inherits the additive manufacturing characteristics of selective laser melting technology, effectively solving the bottlenecks of extremely brittle processing and geometric limitations in traditional manufacturing processes. Furthermore, it enables personalized customization of the shape and structure of complex high-frequency magnetic media, providing a new approach for manufacturing high-performance high-silicon Fe-based magnetic media. The process of this invention is simple and controllable, and the resulting product has superior overall performance, facilitating large-scale industrial applications.

High temperature lubricants for magnetic media are provided. One such lubricant includes an end group having a constituent with a higher rotational energy barrier than CH2. The constituent with the higher rotational energy barrier can be benzene or anisole. The lubricants can be used in conjunction with a magnetic recording medium and / or a magnetic data storage system. The end group is not restricted to a dihydroxy propyl configuration. The anchoring groups can be farther away from the group having a higher rotational energy barrier than CH2,. for example or where n is 0 to 10 and m is 1 to 10.

The present invention relates to a process for treating ammonia-nitrogen-containing wastewater by utilizing a magnetic separation wastewater system. The magnetic separation wastewater system comprises a magnetic separation unit and is characterized in that the magnetic separation wastewater system further comprises an adsorption reaction unit, wherein the adsorption reaction unit comprises an adsorption reaction box, the adsorption reaction box is provided with an adsorption cavity, and the adsorption cavity is connected to the downstream magnetic separation unit. The process comprises: step S1, using a magnetic composite material with an ammonia-nitrogen adsorption function as a magnetic medium, inputting the magnetic medium and the wastewater together into the adsorption reaction unit, and achieving mixing of the magnetic medium and the wastewater in the adsorption cavity and completing adsorption of soluble ammonia-nitrogen in the wastewater; step S2, continuing to input the wastewater into the magnetic separation unit, continuing to treat the wastewater by utilizing a magnetic separation process, and at least removing insoluble pollutants in the wastewater; the process can simultaneously remove soluble ammonia-nitrogen and insoluble pollutants in the wastewater through a single magnetic separation process.

Disclosed are storage devices and methods relating to reading staggered bits recording patterns in which the data bits on adjacent tracks recorded on magnetic media are staggered in such a way that a single reader detects a combined signal from data bits on multiple tracks at selected signal sampling locations. A signal shaping algorithm is used to deconvolve the combine signals, thus isolating each of the tracks from one another so that single track bit sequences can be decoded. In this way, staggered bits patterns can use intertrack interference effects for advantage, allowing readers to read multiple bit tracks simultaneously and without ambiguity.

The application provides an electromagnetic iron remover device and method for detecting the magnetic substance load on a magnetic medium net, comprising a magnetic medium net magnetic cavity, a detection coil, a signal detection circuit and a control unit, a plurality of layers of magnetic medium nets are arranged in the magnetic medium net magnetic cavity; a plurality of detection coils are arranged on the inner side of the cavity wall of the magnetic medium net magnetic cavity, the signal detection circuit is connected with the detection coils, and is used for detecting the change of the inductance value of the detection coil in the process that the magnetic medium net adsorbs iron filings; the control unit is connected with the signal detection circuit, is used for judging the adsorption state of the magnetic medium net according to the change of the inductance value, and is used for controlling the working state of the magnetic medium net magnetic cavity. The application realizes the real-time detection of the magnetic substance load on the magnetic medium net of the electromagnetic iron remover based on the detection coil, and can realize the high-efficiency automatic screening and magnetic separation function of the iron remover.

The present disclosure generally relates to a head assembly in a data storage device. The data storage device may include magnetic media embedded in the device or magnetic media from an insertable cassette or cartridge (e.g., in an LTO drive), where the head assembly reads from and writes to the magnetic media. During device operation, the magnetic media moves across the head assembly. The magnetic media experiences higher contact stress at certain points or portions of the head assembly. A sensor guard is coupled to the head assembly. The sensor guard comprises at least one chamfered surface or at least one stepped surface to decrease the contact stress between the magnetic media and the head assembly during device operation. The at least one chamfered or stepped surface may be disposed on a leading edge of the sensor guard.

The present invention is entitled "Material Having Both Negative Spin Polarization and Negative Anisotropy." Aspects of the present disclosure generally relate to spintronic devices for use in magnetic media drives, magnetoresistive random access memory devices, magnetic sensors, or magnetic recording write heads. The spintronic device includes a multilayer structure having a negative anisotropy field and a negative spin polarization. The multilayer structure includes a plurality of layers, each of the plurality of layers including a first sublayer comprising Fe and a second sublayer comprising Co. At least one of the first sublayer and the second sublayer comprises one or more of Cr, V, and Ti. The first sublayers and the second sublayers alternate. The negative anisotropy field of the multilayer structure is between about -0.5 T and about -0.8 T, and the effective magnetization of the multilayer structure is between about 2.4 T and about 2.8 T.

The utility model discloses a battery cell heating mechanism and equipment, which is characterized in that a battery cell is placed between two electromagnetic heating components, and a hot-pressing driving piece is driven, so that the distance between the two electromagnetic heating components is shortened, an induction coil eddy current is formed between the two electromagnetic heating components, and magnetic substances in the battery cell and magnetic lines generate cutting heating; and the magnetic medium in the magnetic field range is heated together in an electromagnetic induction manner, so that the heating speed is high, the heat loss can be reduced, the heat conduction efficiency is improved, and the productivity of the battery cell in the heating process is favorably improved.

Described are optical magnetic recording systems, writers, media, and methods that utilize pulses of electromagnetic radiation to deterministically record information on magnetic storage media unaided by any additionally applied magnetic field such as from a write pole. The recording pulses may be linearly (or longitudinally) polarized pulses or circularly polarized pulses. The pulses may be modulated in accordance with data bits to be written on the media. Modulation may include modulating the polarization state(s) of the pulses and / or modulating the amplitude(s) the pulses, depending on the particular construction or configuration of the magnetic storage media to be used. Described are recording systems and methods that include laser light pulse generation, light pulse modulation, light pulse delivery, and magnetic media constructions.