60 results about "High-intensity magnetic separator" patented technology

The invention relates to a method for separating and extracting feldspar ore with complex impurity components, which comprises the following steps of: 1) performing ball milling on the feldspar ore with complex impurity components through a ball mill; 2) performing classification and de-sliming on the milled feldspar ore by using an improved hydraulic classifier; 3) performing low-intensity magnetic separation on the classified feldspar ore through a low-intensity magnetic separator to obtain high-intensity magnetic substances and rough feldspar concentrate for high-intensity magnetic separation; 4) performing high-intensity magnetic separation on the rough feldspar concentrate obtained by the low-intensity magnetic separation through a high-intensity magnetic separator to obtain low-intensity magnetic substances and rough feldspar concentrate for flotation; and 5) performing size mixing and segmentation on the rough feldspar concentrate obtained by the high-intensity magnetic separation, adding a flotation agent, and performing reverse flotation, impurity removal and dehydration through a flotation machine to remove impurities and obtain fine feldspar and quartz mixed powder and flotation water.

The invention belongs to the technical field of ore dressing and particularly relates to a specularite dust ore dressing technology. The specularite dust ore dressing technology is characterized by comprising an ore grinding and grading system and a magnetic separation and dressing system. The grade of input raw ore is 33%, and the granularity is 0-15 mm. The specularite dust ore dressing technology comprises specific steps that firstly, specularite dust ore passes through two segments of continuous closed circuits for grinding until specularite is dissociated from gangue monomers, wherein the ball mill-cyclone-fine screen closed circuit is adopted for each segment of ore grinding; the products of which the grading size is 0.074 mm, the grade is 33% and the productivity is 100% in the two segments of closed circuits for grinding are fed into a medium-intensity magnetic separator, a roughing vertical-ring high-intensity magnetic separator, a concentration vertical-ring high-intensity magnetic separator, a roughing flat-ring high-intensity magnetic separator, a concentration vertical-ring high-intensity magnetic separator and two segments of scavenging flat-ring high-intensity magnetic separators for magnetic separation. The grade of final iron ore concentrate can be improved to 50%-52%, and the recovery rate can be increased to 70%-72%. Accordingly, economic benefits of a dressing plant are greatly increased, and the loss of iron resources is lowered.

The invention discloses a pre-selection method for low-grade hematite-containing waste rock. The pre-selection method comprises: fragmenting low-grade hematite-containing waste rock raw ore with the iron grade of 18-23% to 40-0 mm through coarse crushing and intermediate crushing work, employing a permanent-magnet dry type high-intensity magnetic separator to perform pre-selection, controlling the cylinder surface magnetic field intensity of the permanent-magnet dry type high-intensity magnetic separator to be 0.8-1.0 T, controlling the cylinder surface linear velocity, the separation baffle plate distance and the material layer thickness, and throwing out coarse-grain tailings with the iron grade less than 14.0%; grinding the rough concentrate obtained through permanent-magnet dry type high-intensity magnetic separation to 10-0 mm through a high-pressure roller, then preselecting by an electromagnetic pulsation high-gradient coarse-grain wet-type high-intensity magnetic separator, and then throwing out fine-grain tailings with the iron grade of 11% or less, so as to obtain rough concentrate which is sent to a main workshop for grading through a grinding selection technology. According to the method, a large amount of tailings are thrown out through magnetic pre-selection before ore grinding, the ball milling amount of the ore is reduced, the ball milling grade is improved, the ore grinding energy consumption is reduced, the method has the advantages of simple structure, short flow, low energy consumption, strong adaptability and high ore selection technology index, is widely applicable to hematite selection factories, and is especially suitable for pre-selection of low-grade hematite-containing waste rock.

The invention discloses an ore dressing purifying method for high-purity quartz sand. The method comprises the following processes and steps: feeding raw material quartz sand with particle size less than or equal to 0.3mm and SiO2 content more than or equal to 98.0% into a desliming process; feeding the produced desliming sand into a flotation machine for reverse flotation; feeding the produced reverse flotation concentrate into a deep desliming operation; feeding the produced desliming concentrate into a high-intensity magnetic separator for high-intensity magnetic separation impurity-removing operation; concentrating the produced magnetic concentrate; feeding into a leaching tank containing an acidic solution, stirring and removing acid-soluble impurity elements from the magnetic concentrate; cleaning, grading, filtering and drying, thereby obtaining the high-purity quartz sand with SiO2 grade more than or equal to 99.95%. The ore dressing purifying method has the advantages of simple technological process, low production cost, capability of obtaining high purity of quartz sand products, and the like.

An anti-podal permanent magnetic high-intensity magnetic separator is characterized in that the magnetic separator comprises a frame (1), a power vibration mechanism arranged at the middle part of the frame, a permanent magnetic system arranged at the top of the frame, and a vibration supporting frame (18) which is arranged above the permanent magnetic system and is used for installing a feeding funnel (10) and a magnetism-collecting medium box (8); the vibration supporting frame is combined with the power vibration mechanism by a connecting and supporting rod (6); the permanent magnetic system is characterized in that a plurality of axial permanent magnetic alnicos (20) with the same specification are superposed by an extrusion way in two groups and arranged at two sides of the magnetism-collecting medium box (8) in the horizontal direction, the polarity arrangement of each group is N-S-N-S-N-S or S-N-S-N-S-N, the external surfaces of the permanent magnetic alnicos form an antipodal magnetic separation space and a closed magnetic circuit, and the internal surface of each group of the permanent magnetic alnico is clamped between two bakelite boards (19) after being extruded, assembled and positioned precisely; and the Bakelite boards (19) are fixedly arranged on a chute vibration board (12) and a sliding plate (21) by a connecting bolt.

The invention relates to an energy-saving, high-gradient and high-intensity magnetic separator. The energy-saving, high-gradient and high-intensity magnetic separator comprises a magnetic separation device, a conveying device, a feeding device and a sorting box, wherein the magnetic separation device comprises a magnetic separation drum, a magnetizing system, a demagnetizing system and a driving device of the magnetic separation drum, and the magnetic separation drum consists of medium rod filler and a framework thereof; the feeding device is mounted at the lower end of an inner space of the magnetic separation drum and conveys to-be-separated ore granules to the inner side of the magnetic separation drum; the sorting box is located at the lower part of the magnetic separation drum, receives ore granules left by the magnetic separation drum and keeps the drum being immersed in ore pulp. The medium rod is not required to always finish adsorption of the ore granules in a magnetic field after being made from a hard magnetic material, the air gap space of the required magnetic system is substantially narrowed, the energy consumption and the cost are reduced, and the ore treatment amount is increased.

The invention relates to a mixed ore high pressure roll milling dual-media magnetic separation-hematite ore sorting process. The process is characterized by comprising the following steps that raw ore is subject to coarse breaking and medium breaking two-section breaking and screening until the content of products with the granularity reaching -25 mm being 90% or above, then the material is fed into a high pressure roll milling-wind hierarchy system, and the content of products with the granularity being -200 meshes is 60%-65%; and the material is fed into a first-section low-intensity magnetic separator and a first-section high intensity magnetic separator for sorting, first-section low intensity magnetic separation concentrate and first-section high intensity magnetic ore are fed into a tower mill to be milled until the content of products with the granularity being -325 meshes is 90% or above, the products are fed into a second-section low-intensity magnetic separator, a third-section low-intensity magnetic separator, a first-section magnetic vibrating concentrator and an anion reverse flotation operation, concentrate with the grade being 67%-67.5% is obtained, and first-section high intensity magnetic separation tailing, second-section low intensity magnetic separation tailing, third-section low intensity magnetic separation tailing, second-section high intensity magnetic separation tailing and first-section magnetic vibrating concentrator tailing are combined into final tailing. According to the mixed ore high pressure roll milling dual-media magnetic-hematite ore grading process, fine breaking operation and two-section ore grinding operation are reduced, the fine screening operation is eliminated, the flow structure is simplified, and dual-media and short-flow grading is achieved, and the mineral separation cost is reduced.

The invention discloses a magnetic separation method of pyrite roasting slag, which comprises following steps: feeding the roasting slag into a ball mill and adding water to grind into ore pulp, wherein first grade magnetic separating adopts a high intensity magnetic separator with a magnetic field intensity of 2600Gs, the ore pulp is conveyed into the first grade magnetic separator by using a slurry pump for primary separating, residue after magnetic separating is conveyed into a tailings pond for settling, and a magnetically separated material flows to the second grade magnetic separating, second grade magnetic separating adopts a medium intensity magnetic separator with a magnetic field intensity of 1200-1400Gs, first fine selecting is performed, a magnetically separated material flows to a third grade magnetic separating and the residue after magnetic separating returns back to a pulp pool, third grade magnetic separating adopts a low intensity magnetic separator with a magnetic field intensity of 800-1200Gs, second fine selecting is performed, the magnetically separated material flows to a concentrate pool and is settled as iron concentrate, and the residue after magnetic separating returns back to the pulp pool. A total recycle rate of iron element of the method is high and a concentrate grade is high.

The present invention relates to an online cleaning machine for a high intensity magnetic separator medium box. The online cleaning machine comprises a rack, an electric drive device and a high pressure water gun device, wherein the electric drive device comprises a motor, a speed reducer, a connection hand, a bearing pedestal and a drive screw, the high pressure water gun device comprises a high pressure water gun, a water gun walking frame, a water gun stabilizing rod, a stabilizing snapping ring and a drive screw nut, the machine further comprises two reversing switches, and the reversing switches are respectively fixed on both sides of the rack. By installing the online cleaning machine, the problems of poor sorting effect, metal loss and the like due to clogging of the high intensity magnetic separator medium box are effectively solved.

The invention discloses a chromium ore recovering system which is characterized by comprising a general machine frame; a high intensity magnetic separator is mounted at the top of the general machine frame; a vibrating feeder and a gravity separator are mounted under the high intensity magnetic separator; an iron remover is mounted on the side surface of the gravity separator; a material bin is mounted at the upper part of a machine frame I of the high intensity magnetic separator; a vibrating conveyor is mounted under the material bin; a conveyor belt tensioned by a magnetic roller and a redirection roller is mounted under the vibrating conveyor; an air cleaner, a blower and a blast tank are mounted on the vibrating feeder and the under frame of a machine frame II of the gravity separator; a vibrating case is mounted on the machine frame II; a gravity separating sieve is mounted in the vibrating case; a vibrating sieve is mounted at the front end of the gravity separating sieve; a wind distributing board is mounted under the gravity separating sieve; a reducer is mounted on a machine frame III of the iron remover; an output worm gear of the reducer is inserted in a shaft end of a rotary drum; and a magnetic pole seat is mounted in the inner cavity of the rotary drum. The chromium ore recovering system can sort out valuable weakly-magnetic chromium ore particles in mixed particles from other non-magnetic particles, is high in recovery rate, is good in purity, and has significant economic effects.

The invention provides a system for cleaning high-intensity magnetic separator coils. The system comprises a mobile trolley as well as an electronic control box, a storage tank and a cleaning fluid delivery pump which are arranged on the mobile trolley, wherein a cleaning fluid inlet is formed in the storage tank; a cleaning fluid outlet is formed in one end close to the bottom of the storage tank; a cleaning fluid outlet valve is arranged at the cleaning fluid outlet; one end of the cleaning fluid delivery pump is connected with the cleaning fluid outlet, and the other end is connected with the high-intensity magnetic separator coils, and the cleaning fluid delivery pump is used for delivering a cleaning fluid in the storage tank to the high-intensity magnetic separator coils for cleaning. According to the system for cleaning the high-intensity magnetic separator coils, the cleaning fluid is stored in the storage tank and delivered by the cleaning fluid delivery pump to the high-intensity magnetic separator coils for chemical cleaning, so that the cleaning efficiency is high, and the equipment damage is little.

The invention belongs to the field of dressing of black metals, and relates to a method for raising the grade of complex hematite which is difficult for dressing by reducing and magnetizing with microorganisms and dressing. A major process comprises ore grinding, forced magnetic dressing, reducing and magnetizing with microorganisms, and the like. The method is characterized by comprising the following steps of: feeding hematite of which the granularity is 0-4 millimeters into an ore mill for milling till hematite of -200 meshes accounts for 50-65 percent of all hematite; grading a ground ore sample with a high-gradient high intensity magnetic separator; feeding selected ore concentrate into the ore mill for milling to ore of less than -200 meshes; reducing and magnetizing with microorganisms by taking organic waste water as a culture medium; and selecting final ore concentration by performing high intensity magnetic separation, wherein the iron grade can be up to 55-70 percent, the recovery rate is over 70 percent, and the COD (Chemical Oxygen Demand) of the organic waste water is lowered remarkably. According to the method, complex hematite which is difficult for dressing can be fully recycled, and the product grade and the recovery rate are remarkably increased in comparison to those in the conventional high intensity magnetic separation process; and moreover, the energy consumption is low, and the method is environmentally-friendly.

The invention discloses a manufacturing method of a magnetic matrix box for a vertical ring high-intensity magnetic separator. The magnetic matrix box comprises more than two matrix sub-boxes; each of the matrix sub-boxes comprises lifting lugs, panels with the lifting lugs, a panel without lifting lug and magnetic matrix filaments; and the manufacturing method is characterized in that thousands of the magnetic matrix filaments are fixed together with the panels with the lifting lugs and the panels without lifting lugs by adopting the casting method. According to the manufacturing method of the magnetic matrix box for the vertical ring high-intensity magnetic separator, the processing efficiency of the magnetic matrix box for the vertical ring high-intensity magnetic separator is improved, the labor intensity is reduced, the corrosion resistance of the panels is improved, and the service life of the high-intensity magnetic separator is prolonged.

A method for production of iron ore concentrates comprising the steps of: crushing low grade ore, slimes and other deposits to produce iron ore particle of the size less than 1.5 mm; subjecting the said particles to the step of selective separation to isolate iron ore mineral from gangue minerals; and obtaining enriched ore with high iron content from (60% to 67%) using low intensity magnetic separator (LIMS) and high intensity magnetic separator (HIMS).

The invention discloses a vertical ring high intensity magnetic separator and a method for improving the ore discharge efficiency of the vertical ring high intensity magnetic separator. The method comprises the following step of sequentially arranging N (larger than or equal to 2) groups of air channels and water channels which are not connected with one another circumferentially in a region from the position above the medial axis horizontal line of a swivel to the perpendicular bisector of the diameter of the swivel. A material is repeatedly treated by N groups of a great quantity of high-pressure air and a small quantity of ore discharge water sequentially and alternately, so that the purpose of improving the ore discharge efficiency is realized. By adopting the vertical ring high intensity magnetic separator and the method, high-pressure air assistance is added for many times, and the dosage of the ore discharge water is lowered on the basis of increasing the ore discharge pressure and keeping the ore discharge effect unchanged, so that the concentration of high-concentration ores cannot be lowered, the working efficiency of subsequent ore dressing is improved, waste of water resources is also reduced, the ore discharge efficiency is effectively improved by 20 percent or above at the same time, the ore dressing handing capacity is promoted to be remarkably increased, and the service life of equipment is prolonged.

The invention discloses a method for increasing the recovery rate of complex refractory iron oxide ores. The method comprises the steps that firstly, the complex refractory iron oxide ores are pretreated, then selected slurry is prepared and subjected to rough concentration operation to obtain concentrate pulp and tailings pulp, the concentrate pulp is pumped into a concentrate concentration largewell, the tailings pulp is graded into a fine fraction part and a coarse fraction part, the fine fraction part and the coarse fraction part are sorted separately, the sorting process parameters are set individually, inclusions are reduced, and the recovery effect is good; a vertical ring high intensity magnetic separator with a special-shaped poly magnetic medium is used for primary scavenging operation of the fine fraction part after coarse and fine grading, and the recovery effect of the micro-size fraction is reinforced; and a horizontal ring high intensity magnetic separator is utilized to conduct secondary scavenging operation on the fine fraction part after coarse and fine grading, a selective flocculation process is conducted before secondary scavenging, and thus the interference of vertical ring pulse jig frequency on selective flocculation is avoided. According to the method, the metal recovery rate is effectively increased, the application range is wide, industrial production is easy to achieve, operability is high, and the effect of increasing the recovery rate of fine fraction mineral separation is remarkable.

The invention provides a vertical-loop high-intensity magnetic separator with a superconductivity magnet exciting coil. The vertical-loop high-intensity magnetic separator comprises seven parts, namely, the superconductivity magnet exciting coil (1), a high-intensity magnetic separator magnet yoke (2), an upper high-intensity magnetic separator hopper (3), a lower high-intensity magnetic separator hopper (4), a high-intensity magnetic separator hood (5), a high-intensity magnetic separator bracket (6), a high-intensity magnetic separator swivel, a swivel driving part (7), and the like. According to the vertical-loop high-intensity magnetic separator provided by the invention, as a superconductivity wire is used as a carrier of current in the whole excitation process, and the superconductivity wire is always in an environment with extremely low temperature and is in the superconductivity state constantly when working, excitation energy consumption of equipment is avoided in the while process, and the effect of reducing the energy consumption is achieved.