17results about "High gradient magnetic separation" patented technology

The invention relates to the technical field of quartz sand purification, in particular to a high-purity quartz sand purification method and equipment. 2, a magnetic separation stage; 3, an acid leaching stage; 4, an ultrasonic-assisted cleaning stage; 5, a high-temperature chlorination treatment stage; according to the quartz sand purification method, various impurities such as magnetic impurities, non-magnetic metal impurities and silicate impurities in the quartz sand can be deeply removed through the synergistic effect of multiple steps such as pretreatment, magnetic separation, acid leaching, ultrasonic-assisted cleaning and high-temperature chlorination treatment, the purity of the quartz sand reaches 99.999% or above, the strict requirements of high-end fields such as semiconductors and photovoltaics are met, and the method is suitable for industrial production. The purification steps are closely linked to form a modular purification process, and meanwhile, advanced technologies such as ultrasonic-assisted cleaning and high-temperature chlorination treatment are adopted, so that the impurity removal efficiency is remarkably improved, the purification time is shortened, and the energy consumption and the use amount of chemical reagents are reduced by optimizing the process and equipment.

The invention relates to the technical field of ore separation, and discloses a multi-stage photoelectric-jigging-magnetic separation synergistic efficient ore separation process which comprises the following steps: A, material pretreatment and particle size regulation and control: raw ore raw materials are treated through crushing and screening equipment; the method comprises the following steps of: adding the raw materials into a magnetic separator to obtain a coarse-fraction product with the particle size range of 5-100mm and a fine-fraction product with the particle size range of 0.5-5mm, and cleaning and drying the products to remove surface dust and pollutants. Sequential and parallel recognition and sorting of multi-dimensional physical attributes such as color (photoelectricity), density (jigging) and magnetism (magnetic separation) of ore particles are achieved, the function limitation of a single sorting method is overcome through the multi-technology coupling mechanism, and a large amount of waste rock is efficiently thrown at the front end through photoelectric pre-sorting; the enriched valuable minerals can be intensively treated by subsequent gravity separation and magnetic separation equipment, and the unit operation efficiency is improved.

Disclosed herein is an apparatus for separation of diamagnetic particles of sub-micron diameter from a fluid. The disclosed apparatus includes a first magnetic coil including a hollow center and a separation unit including an outer enclosure and a second magnetic coil. The second magnetic coil includes a single-layer of windings of a magnetic wire and at least one nonmagnetic wire on a nonmagnetic core where the first magnetic coil houses the separation unit in the hollow inner center. Also disclosed herein is a method of using the apparatus.

The invention relates to a system, comprising: a) a sample processing unit, comprising an input port and an output port coupled to a rotating container having at least one sample chamber, the sample processing unit configured provide a first processing step to a sample or to rotate the container so as to apply a centrifugal force to a sample deposited in the chamber and separate at least a first component and a second component of the deposited sample; and b) a sample separation unit coupled to the output port of the sample processing unit, the cell separation unit comprising separation column holder, a pump and a plurality of valves configured to at least partially control fluid flow through a fluid circuitry and a separation column positioned in the holder, the separation column configured to separate labeled and unlabeled components of sample flowed through the column.

The invention relates to the technical field of refractory iron ore dressing and smelting, and discloses a fluxed oolitic hematite full-dry utilization method which comprises the following steps: crushing fluxed oolitic hematite to obtain a crushed material, screening the crushed material to obtain an oversize product and an undersize product, and pre-selecting and discarding the oversize product to obtain pre-selected rough concentrate and tailings; the pre-selected rough concentrate is crushed to obtain a crushed material, the crushed material and the screen underflow are mixed to obtain a mixture, and the mixture is subjected to strong magnetic dry separation to obtain rough concentrate and rough tailings; the rough concentrate and sintering raw materials are mixed to obtain a mixed material, the mixed material is granulated to obtain a sintering mixed material, and the sintering mixed material is distributed, ignited and sintered; and the coarse tailings are magnetized and roasted to obtain roasted ores, the roasted ores are ground to obtain fine-ground concentrates, and the fine-ground concentrates are separated to obtain magnetite concentrates and fine tailings. The fluxed oolitic hematite is processed, industrial application of the fluxed oolitic hematite is achieved, and the method has important practical significance on comprehensive utilization of mineral resources.

The present invention relates to the field of magnetic ore separation technology, and in particular to a high-efficiency magnetic separation method for titanium concentrate. The technical key points are as follows: the titanium concentrate includes at least one of magnetic titanium concentrate, iron-containing mineral impurities, non-magnetic minerals and other non-magnetic impurities; the method comprises: performing weak magnetic separation on the titanium concentrate to obtain a first separation and a strongly magnetic iron-containing mineral impurity; performing component analysis on the first separation, and if the Fe in the first separation is 3+ The content of is greater than a first preset value, first magnetic particles and second magnetic particles are added to obtain a first magnetized separation; the first magnetized separation is subjected to a first strong magnetic separation to obtain a second separation, non-magnetic minerals and other non-magnetic impurities; the second separation is acidified and subjected to a second strong magnetic separation to obtain magnetic titanium concentrate and iron-based weakly magnetic mineral impurities; the non-magnetic minerals and other non-magnetic impurities are subjected to solid-liquid separation to obtain non-magnetic titanium concentrate.

Systems and methods are provided for the transport and separation of transition metal solutes using magnetic fields. A high-gradient magnetic field can be generated between the flat-faced poles of an electromagnet. The magnetic separation process can be enhanced by the aggregation of paramagnetic metal solutes into clusters, which are predicted to be two orders of magnitude larger than individual solute units.

A method and apparatus for continuous magnetic filtration of ferrous mill scale from liquid solution employs a tank for receipt of fluids laden with mill scale. A curvate trough within the tank receives a rotatable magnetic drum and establishes a channel therebetween. An air compressor and associated manifold generate bubbles within the tank and adjacent the rotatable magnetic drum. The mill scale attaches to the bubbles, which are attracted to the surface of the drum where the mill scale accumulates. The accumulation of mill scale particles is moved about the surface of the rotating drum by a scraper proximate the surface thereof. By moving the accumulated mill scale particles to regions of the rotating drum that are of a magnetic force insufficient to retain them upon the surface of the drum, the mill scale particles are removed and passed to a conveyor system.

The invention provides a method and equipment for extracting and recovering tantalum and niobium metals from lepidolite tailings, and relates to the technical field of metal material recovery, the method comprises the following steps: step S1, the tailings are crushed and ball-milled to a certain fineness; s2, tantalum-niobium minerals in the tailings are preliminarily enriched through a gravity concentration method, and roughed tantalum-niobium concentrates and roughed tailings are obtained; and S3, primary scavenging is conducted on the roughing tailings through a high-gradient magnetic separation method, and roughing tantalum-niobium concentrate and magnetic separation tailings are obtained. According to the scheme, the tantalum-niobium concentrate with the grade larger than 18% and the recovery rate larger than 40% is finally obtained after the tantalum-niobium concentrate with the primary shaking table and the tantalum-niobium concentrate with the secondary shaking table are evenly mixed, and a certain amount of valuable metal elements such as tantalum and niobium are contained in the lepidolite tailings; by means of the method, the originally abandoned rare metals can be recycled, resource waste is reduced, and the comprehensive utilization rate of mineral resources is increased.

Disclosed herein is an apparatus for separation of diamagnetic particles of sub-micron diameter from a fluid. The disclosed apparatus includes a first magnetic coil including a hollow center and a separation unit including an outer enclosure and a second magnetic coil. The second magnetic coil includes a single-layer of windings of a magnetic wire and at least one nonmagnetic wire on a nonmagnetic core where the first magnetic coil houses the separation unit in the hollow inner center. Also disclosed herein is a method of using the apparatus.

The present application relates to a kind of low-grade complex lead-zinc-gold-silver ore high-efficiency comprehensive recovery method, comprising: (1) two-stage selective crushing and grinding classification;(2) pulse high gradient magnetic separation;(3) gold-silver-containing iron concentrate cyanide carbon slurry gold-silver;(4) magnetic separation tailings flotation lead gold silver;(5) floatation lead tailings flotation zinc.The present application is classified by two-stage selective crushing and grinding and pulse high gradient magnetic separation before flotation, effectively prevent primary fine material and slime overgrinding and mud, and preferentially separate micro-fine hematite and limonite, to reduce the adverse effects of micro-fine material on flotation, then use multi-stage flotation and cyanide carbon slurry process to recover valuable metals in magnetic separation tailings and gold-silver-containing hematite and limonite concentrate respectively, realize comprehensive recovery of gold-silver-iron-lead-zinc in low-grade complex lead-zinc-gold-silver ore, and the high-efficiency comprehensive recovery effect is remarkable, successfully solve the problem of low recovery rate, high recovery cost and lead-zinc cannot be recovered in single flotation process.

An apparatus is disclosed for inducing magnetism in a flowstream of at least partially magnetisable, dry particulate feed material, in order to effect a subsequent particle classification. The dry separation stage is located proximal to the magnetic induction apparatus, in the form of a treatment chamber 10 with a plurality of spaced-apart magnets 16, 18 located adjacent to, and moveably displaceable along the length of both an upper and a lower side region of the treatment chamber 10, to generate a localised magnetic induction field zone. Conveyer belts 22, 24 carrying the dry particles move across each of the outer faces of the magnets 16, 18 on both sides of the chamber 10, but at differential relative velocities to each other, creating a region of air-particle fluidisation and agitation within the treatment chamber 10 and then a physical separation of the particulate feed material can occur based upon their susceptibility to magnetic induction.

The invention discloses a lepidolite ore treatment method which comprises the following steps: pretreatment of lithium chinastone ore, continuous high-gradient magnetic separation, efficient gravity concentration and strong magnetic separation, desliming flotation, recovery of lepidolite from mineral separation tail mud, recycling of waste tail mud, separation of quartz sand and feldspar in tailings, and preparation of a gel material from lepidolite lithium extraction tailings. According to the method, the lithium chinastone is fully recycled, all valuable metals in the ore are extracted, the tail mud generated in the process is further subjected to flotation to be used for extracting the lepidolite concentrate, and the tail mud obtained after the lepidolite concentrate is extracted is used for preparing ceramics; flotation tailings are used as raw materials for feldspar extraction and quartz extraction; the lithium extraction tailings are used for preparing a gel material. According to the method, a lithium chinastone resource recycling system is constructed, closed-loop flow of raw materials, products, wastes and regenerated raw materials is realized, and the utilization efficiency of lithium chinastone resources and the environmental benefits are improved.

The invention pertains to a method of manufacturing a defined population of target cells from a mixed population of blood cells using an apparatus that is configured for processing such cells using a sterile tubing set,wherein the tubing set comprises: (a) an input port configured to receive and deliver the sample to a rotating container, (b) said rotating container, which is configured to rotate about an axis and thereby to apply centrifugal force to a sample contained in a processing chamber in the container so as to separate cells from the sample from other components of the sample; (c) an output port configured to transfer cells processed by the rotating container to a cell separation column; (d) said separation column, which is configured to separate labeled cells from unlabeled cells; and (e) an output port configured to transfer cells separated by the cell separation column to a product collection container. According to the invention, the the method comprises: (1) delivering the sample through the input port into the tubing set; and (2) operating the apparatus such that the sample is processed by the rotating container and by the separation column in the tubing set whereby the target cells are delivered into the product collection container while maintaining sterility of the target cells throughout the aforelisted components of the tubing set.

The invention provides a method for removing heavy metal toxicity from polluted soil, and relates to the technical field of soil remediation, and the method comprises the following steps: carrying out primary crushing on the polluted soil, and carrying out primary size grading on obtained first particles by taking 5mm as a boundary to obtain materials with two size fractions of + 5mm and-5mm; carrying out secondary crushing on the material with the particle size of-5mm, and carrying out secondary size grading on obtained second particles with the boundary of 1mm, so as to obtain the material with the particle size of-1mm and the material with the particle size of 1-5mm; and performing dry magnetic separation on the materials with the particle sizes of + 5mm and 1-5mm, and performing wet magnetic separation on the materials with the particle size of-1mm to separate heavy metals. According to the method, through combined optimization of size grading and a magnetic separation process, efficient separation of metallurgical slag with different particle sizes is achieved, and the content of heavy metal in the treated soil reaches the second-class land use standard of Soil Pollution Risk Management and Control Standard for Soil Environmental Quality Construction Land (GB36600-2018).

Systems and methods are provided for the transport and separation of transition metal solutes using magnetic fields. A high-gradient magnetic field can be generated between the flat-faced poles of an electromagnet. The magnetic separation process can be enhanced by the aggregation of paramagnetic metal solutes into clusters, which are predicted to be two orders of magnitude larger than individual solute units.

A method for the recovery of vanadium, the method including the steps of:(i) subjecting a vanadium-containing ore to a beneficiation step incorporating a sequence of medium-intensity magnetic separation, high-intensity magnetic separation and reverse silica flotation processes to form a vanadium-containing concentrate;(ii) roasting the vanadium-containing concentrate;(iii) leaching a product of the roasting step (ii) to extract vanadium into a pregnant leach liquor;(iv) passing the pregnant leach liquor of leaching step (iii) to a precipitation step; and(v) Treating a precipitate from step (iv) to obtain a vanadium product,wherein an iron-titanium product from step (iii) is recovered.