53results about How to "Raise the magnetic field gradient" patented technology

A high-gradient continuous magnetic separator for weakly magnetic small particles, has a separation ring composed of multiple separation chambers containing steel fibres and magnetic medium, and at least 4 pairs of C-shaped permanent magnets surrounding said separation ring. The said separation chamber has feed tube and washing water tube. Its advantages are simple structure and easy operation.

A dry-type permanent magnetic roller for separation of fine-disseminated ore is characterized in that: the magnetic roller comprises a magnetic roller core shaft, a non-magnetic conductive cylinder by which the magnetic roller core shaft is sleeved in a manner that the cylinder has a same shaft center as the magnetic roller core shaft, stainless steel rings and low-carbon steel rings by which the non-magnetic conductive cylinder are orderly sleeved with intervals; a magnet ring formed by a plurality of spaced sector magnets and magnetism isolating materials are mounted surrounding an outer ring surface of each low-carbon steel ring, and a non-magnetic conductive material ring is mounted surrounding an outer ring surface of each stainless steel ring; a stainless steel wrapping layer is disposed on the outermost layer of the magnetic roller; the sector magnets are arranged with the N and S poles being alternative in the axial and circumference directions of the whole roller, and the magnetic poles are in pairs with each magnetic pole being an opposite magnetic pole to its adjacent magnetic pole.

The invention relates to an iron-titanium ore magnetic separator which comprises a rack, a magnetic separation mechanism and a feeding hopper, wherein the magnetic separation mechanism comprises a titanium concentration device, an iron-titanium separation device, a titanium selection motor and an iron-titanium separation motor; the titanium concentration device is driven by the titanium selection motor, a titanium concentrate discharging hopper, a titanium ore recovery hopper and a tailings discharging hopper are arranged at the lower side of the titanium concentration device; a titanium concentrate precision regulator is arranged at one sides of feeding ports of the titanium concentrate discharging hopper and the titanium ore recovery hopper; a tailings precision regulator is arranged at one side of a feeding port of the tailings discharging hopper; the iron-titanium separation device is driven by the iron-titanium separation motor and comprises a first iron-titanium separation device and a second iron-titanium separation device; iron-titanium separation precision regulators are arranged at one sides of an iron-titanium mixture discharging hopper and an iron-titanium powder discharging hopper which are arranged at the lower side of the first iron-titanium separation device and at one sides of a titanium-in-iron discharging hopper and an iron powder discharging hopper which are arranged at the lower side of the second iron-titanium separation device. The iron-titanium ore magnetic separator is simple and reasonable in structural design, high in magnetic separation efficiency, good in effect and capable of effectively screening and separating minerals, and is environment-friendly.

The invention discloses a low-energy-consumption method for separating ilmenites from tailings in an iron choosing plant. The method comprises the following steps: firstly, by taking the tailings in the iron choosing plant as raw materials, separating the tailings by using a permanent magnet drum-type mediate-intensity magnetic separator; discharging non-magnetic materials directly taken as magnetic separation tailings; next, grinding mediate magnetic separation concentrates taken as magnetic materials under the conditions that the monomer separation of the ilmenites is effectively realized while the grinding concentrates, the fineness of which is controlled as -75mu m, account for 75% to 95%; performing low-intensity magnetic separation on the mediate magnetic separation concentrates by using a low-intensity magnetic separator so as to separate iron concentrates and lead the rest of mineral materials to enter the next step; performing rough separation on the rest of mineral materials and then performing fine separation on the concentrates for multiple times after the rough separation so as to obtain ilmenite concentrates; performing sweeping separation on the tailings after the rough separation; combining the useful mineral materials for multiple times after the sweeping separation; returning the tailings after the fine separation into a rough separation process; and finally discharging the tailings which are subjected to the sweeping separation are taken as the ilmenites. The method is simple in process, reasonable in magnetic path design, uniform in magnetic field distribution, high in metal recovery rate and good in separation quality.

The present invention provides a coarse coal powder permanent magnet dry type echelon magnetic extractor. The magnetic extractor includes a main body machine frame, a drive wheel machine frame equipped with a drive conveyer band wheel on the machine frame body and a drove wheel machine frame equipped with a drove conveyer band wheel on the machine frame body which are set on left side and right side of the main body machine frame respectively; an echelon magnetic source is set on top of a steel plate table of the main body machine frame, a magnetic material receiving hopper is set on bottom of the steel plate table of the main body machine frame; an upper conveyor belt part of a sorting material conveyer band drove by the drive conveyer band wheel and the drove conveyer band wheel locates on right upper part of the echelon magnetic source, a down bend returning band part locates on right down part of the echelon magnetic source; a vibrating feed hopper is set on the machine frame on upper of the drove conveyer band wheel, a non-magnetic receiving material hopper is set on the machine frame on down part of the drive conveyer band wheel; a poly-magnetic dielectric is set on upper of the sorting material conveyer band located on upper part of the echelon magnetic source which can move front and back, right and left.

The invention discloses a specific susceptibility tester. Existing related devices for testing specific susceptibilities are small in type and number, and similar instruments with related functions have the defects that testing periods are long, a great deal of labor is needed, the price is high or measurement accuracy is low. The specific susceptibility tester comprises an electromagnetism exciting system, a measurement support device, a digital measurement mechanism, a digital magnetic field measurement mechanism, an electrical control device and an automatic measurement software system. The specific susceptibility tester is simple in structure and convenient to use, and can automatically test the specific susceptibility of a substance. The specific susceptibility tester is stable in performance, can automatically adjust the magnetic field environment, collects and processes digital information of a transmission end, and synchronously displays testing data and plane rectangular coordinate images. The specific susceptibility tester is short in testing period, low in power consumption, high in measurement accuracy and capable of automatically generating testing reports.

The present invention proposes a dry double-roller strong magnetic separator, which includes a supporting frame, a transmission chain, and a feeding hopper arranged on the top of the supporting frame. At least two sets of relatively parallel toothed magnetic poles are wound on the electromagnetic roller, and the left and right sides of the electromagnetic roller are provided with unloading bearing seats, and the unloading bearing seats are provided with unloading brushes that match the toothed magnetic poles A discharge hopper is provided below the electromagnetic roller, and the electromagnetic roller drives the unloading brush wheel to rotate through the auxiliary sprocket assembly and the transmission chain arranged on the support frame. The dry-type double-roller strong magnetic separator of the present invention adopts the paired structure magnetic system and the tooth-shaped magnetic pole effect of the electromagnetic roller to increase the magnetic penetration depth, the magnetic field gradient is high, and the magnetic induction intensity of the magnetic separation area can reach 2.5T; the separation effect is good, It can sort dry and fine materials without environmental pollution.

The high gradient magnetic field generator features that it consists of three-pawl magnetic field instrument and capacitive discharge pulse magnetic field. The three-pawl magnetic field instrument consists of upper three-pawl magnetic field magnetic path device and lower fixing base board with central hole; and the electric pulse magnetic field consists of pulse power source for capacitor discharge and exciting winding on the S1-N1 pole head in the three-pawl magnetic field magnetic path device. The present invention has raised magnetic field gradient and strength and is suitable for use in the magnetic target treatment of superficial and deep tumor and animal experiment. The present invention has the advantages of high magnetic field gradient, long magnetic action distance, convenient operation, etc.

The invention belongs to the application field of superconducting magnets and discloses a bit-like superconducting magnet based on a ReBCO coating conducting sheet. The bit-like superconducting magnet based on the ReBCO coating conducting sheet includes superconducting sheets, insulation sheets, superconducting lead sheets and a fixing device. The insulation sheets and the superconducting sheets are overlapped under a first superconducting lead sheet in sequence, the adjacent superconducting sheets are welded, a second superconducting lead sheet is welded under the last superconducting sheet and the last insulation sheet, flanges are added on the top and the bottom, a locating pull rod penetrates through a locating hole of each sheet to fix all sheets together and form a whole single bit-like superconducting magnet; or single bit-like superconducting magnets are nested mutually through the adjustment of the inner radius and the outer radius, so that multi-level bit-like superconducting magnets are nested into a combined superconducting magnet. The bit-like superconducting magnet not only can output a high magnetic field, but also be stable, compact in structure and capable of realizing multi-level nest conveniently and processing general insulation easily.

The invention discloses a device for high-efficient separation of magnetotactic bacteria in a high gradient magnetic field, which comprises a container for accommodating liquid containing magnetotactic bacteria, and is characterized in that the container is disposed in a solenoid; the solenoid is connected with a low frequency power supply; a steel wool with magnetic conductibility is disposed in the container. The device of the invention has a high magnetic field gradient; the magnetic field force applied to the magnetotactic bacteria is hundred times higher than that applied by a permanent magnet, and thus the magnetotactic bacteria can be captured easily, and are not washed away with solutions. The adsorption efficiency is improved greatly. The high gradient magnetic field can be removed at any time by turning off the electromagnetic field, and thus the magnetotactic bacteria are easily washed off from the steel wool, realizing the purpose of separation or recovery. The device is low in technical cost, high in efficiency, and free of secondary pollution.

The invention relates to a gradient field electromagnet for permanent magnet temperature coefficient open circuit measurement. The gradient field electromagnet is used for providing magnetic field strength and magnetic field gradient which meet the requirements of temperature coefficient open circuit measurement in a permanent magnet temperature coefficient magnetic open circuit measurement device. The gradient field electromagnet comprises a bottom plate, an outer sleeve, an upper electrode tip, a lower electrode tip and a coil. The bottom plate is a circular bottom plate. The outer sleeve is fixed to the bottom plate. The upper electrode tip is of a cover structure with a through hole reserved in the center, and the upper electrode tip is fixed to the outer sleeve. The inner wall of the upper electrode tip is a protrusion with the certain radian. The lower electrode tip is a cylinder, wherein the top end of the cylinder is provided with a protrusion with the certain radian. The lower electrode tip is fixed to the bottom plate. The lower electrode tip is sleeved with the coil. Due to the ingenious structural design, excitation consumption outside a working area is greatly reduced, and high magnetic field gradient is obtained through a small number of field ampere-turns in the working area; meanwhile, the magnetic field strength and the magnetic field gradient which meet the requirements of temperature coefficient open circuit measurement can be provided, and the resolution ratio of temperature coefficient open circuit measurement is improved.

The invention belongs to the field of atom cooling and capturing technology, and provides a method and a device used for preparing an ultra long type cold atomic cloud asymmetric two-dimensional magnetic optical trap. The method comprises following steps: 6 cooling light beams enters into a MOT glass cavity, and meet at a point, the 6 cooling light beams are divided into three pairs, and the two light beams in each cooling light beam pair are designed to be correlation overlapped, the first cooling light beam pair is designed to travel along the X axis direction, and the second cooling light beam pair and the third cooling light beam pair are designed in the Y/Z plane with an angle equal to or larger than 120 DEG; a first rectangular coil pair parallel to the Y/Z plane and a second rectangular coil pair parallel to be X/Z plane are arranged at the surrounding of a window of the MOT glass cavity, the length of the second rectangular coil pair is designed to be 1.5 times of the length ofthe first rectangular coil pair, and the first rectangular coil pair and the second rectangular coil pair are all anti-Helmholtz coils. The method and the device can be used for preparing high atom number and high optical thickness ultra long cigar-shaped cold cesium atom cloud, and providing high quality experiment mediums for quantum coherence effect, quantum storage, and quantum precision measuring researches.

The invention relates to a magnetic matrix used for a high silicon cold rolling prism-shaped rod type magnet separator, which belongs to the mineral processing equipment technical field. The invention is characterized in that the magnetic matrix is composed of two blocks of nonmagnetic metal plates and a plurality of high silicon cold rolling prism-shaped rod type magnetic conductive medium rods fixed in the nonmagnetic metal plates, two blocks of nonmagnetic metal plates are mutually parallel and embedded in a sorting space, the high silicon cold rolling prism-shaped rod type magnetic conductive medium rods are vertically fixed between two blocks of nonmagnetic metal plates to form a magnetic matrix sorting box. The high silicon cold rolling prism-shaped rod type magnetic conductive medium rods are prepared by the high silicon cold-rolled steel bar, the section is equilateral rhombus, a long pointed part of the prism-shaped rod is arranged towards to the direction of the magnetic field. The magnetic matrix used for the high silicon cold rolling prism-shaped rod type magnet separator possesses the advantages of high magnetic field gradient, large sorting space, high efficiency, energy saving, high-hardness and wear resistance, rust resistance, corrosion resistance, small retentive magnetism and the like, the better ore dressing index can be acquired, the magnetic matrix is especially suitable for recovering the weakly magnetic mineral particles with fine particle fraction.

The invention relates to a cell plating device using magnetic liquid as a medium, belonging to the field of biomedical engineering. The device of the present invention includes a silicon wafer substrate, a T-shaped channel, microcoil I, microcoil II, permanent magnet I, permanent magnet II, and a programmable AC power supply. The silicon wafer substrate is provided with microcoil I and microcoil II. Coil I and microcoil II are on a straight line with a gap between them; the T-shaped channel is sealed and fixed on the silicon substrate, microcoil I and microcoil II are located below the horizontal channel of the T-shaped channel, microcoil I The gap between the microcoil II and the vertical channel of the T-shaped channel is directly opposite to the vertical channel of the T-shaped channel; a transparent cover plate is arranged above the T-shaped channel, and the permanent magnet I or permanent magnet II is arranged on the cover plate, and the permanent magnet I or permanent magnet II Located directly above the gap between the microcoil I and the microcoil II; each wire of the microcoil I and the microcoil II is connected to a programmable AC power source. The invention can effectively reduce the disturbance problem in the manual operation process, and improve the plating efficiency of cells.

The invention relates to a fluid magnetic processor. The fluid magnetic processor is composed of a body (2), an inlet joint (1) and an outlet joint (3). The inlet joint (1) and the outlet joint (3) are connected to the body (2). The body (2) is composed of a cover plate (21), a housing (23) and a magnetic steel combination (27). The magnetic steel combination (27) is a permanent magnet string enclosed by end-to-end connection of multiple permanent magnet sources along a magnetism direction from N poles to S poles. An air gap is kept between adjacent permanent magnet sources. The permanent magnet sources are different from the vertical sectional area of the magnetism direction in terms of the area. As for the permanent magnet sources, the middle areas are the biggest with areas close to air gaps gradually becoming smaller. Compared with the prior art, the fluid magnetic processor has the following beneficial effects: high magnetic field intensity and high magnetic field gradient for the working air gaps are realized.

The invention discloses a system for driving micro-fluid magnetic mixing based on a micro-wire magnetic field and a processing method. The system comprises a PCB, a silicon substrate is arranged on the PCB, a plurality of micro-wires are deposited on the silicon substrate side by side, the two ends of each micro-wire are connected with a conductive bonding pad arranged on the PCB through conductive connecting pieces, so that connection with an external control circuit and a power supply is realized, the silicon substrate is also provided with a Y-shaped microfluid channel for circulating magnetic nanoparticle suspension liquid and non-magnetic fluid, the bottom surface of the Y-shaped microfluid channel is in direct contact with the micro-wire, and an included angle is formed between the Y-shaped microfluid channel and the micro-wire. The magnetic solution and the non-magnetic solution in the Y-shaped channel are mixed under the action of a micro-wire magnetic field.