9results about "High gradient magnetic separation" patented technology

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.

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.

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.

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.