8 results about "Magnetic separator" patented technology

The invention relates to an air separation device and a method for domestic garbage. The device comprises a preprocessing unit and an air separation unit, wherein the preprocessing unit contains a feed belt, a magnetic separator and a crusher, and the air separation unit comprises a charging belt, a dedusting filter cartridge, a circulating fan 1, an air separation chamber, an air return pipeline, a roller 1, a roller 2, a circulating fan 2, a heavy substance storage bin, an intermediate-weight substance storage bin, a light substance storage bin and the like. In the invention, the separation of the domestic garbage is realized by the following method: the domestic garbage enters the magnetic separator and the crusher by the feed belt for preprocessing, then enters the air separation unit and enters the air separation chamber by the charging belt, the air speed and the air quantity in the air separation chamber are controlled, heavy substances, intermediate-weight substances and light substances in the domestic garbage respectively fall into the respective storage bins, and the return air is connected to the dedusting filter cartridge by a pipeline and is returned to the circulating fans after the return air is dedusted.

The invention discloses a method for extracting iron from iron tailing, comprising following steps: (1) adding water into iron tailing to be mixed into ore pulp; (2) ultra-fine processing said ore pulp; (3) adding organic acid or its salt into ore pulp after step (2) for magnetic selection in the magnetic separator. The invention is a new clean producing ore selection process with lower cost and high extraction rate while extracted iron has high grade. Therefore, the invention has higher technique and economic value, which can improve the ore selection level, economic benefit, release the lack of iron rich ore, to reduce the power consumption of steel manufacture and generate large benefit to corporation.

The invention discloses a preparation process and system for producing a high-grade titanium-rich material by utilizing ilmenite, and belongs to the field of chemical engineering and metallurgy. The preparation process comprises the following steps: putting ilmenite concentrate into a first rotary kiln, and then adding a reducing agent and a desulfurizing agent for primary reduction, so as to obtain a reduced material I; enabling tail gas to pass through high-temperature cyclone dust removal equipment, an oil-gas separator, a Roots blower and a gas holder in sequence, and finally, conveying reducing gas to a second rotary kiln; cooling the reduced material I, and then removing impurities through a screening machine and a magnetic separating machine, so as to obtain a pure uniform-particle-size ferrotitanium inlay; feeding the ferrotitanium inlay to the second rotary kiln for secondary reduction, so as to obtain a reduced material II; and cooling the reduced material II, and performingthe grinding-separating operation and the magnetic separating operation in sequence, so as to obtain an iron product and the titanium-rich material. The preparation process has no restriction on the selection of raw materials; the equipment failure rate is low; the treatment of tail gas is simple; the environment-friendly and energy-saving properties are achieved; the metallization rate of the obtained iron product reaches 98% or higher; the content of titanium dioxide in the titanium-rich material is higher than 90%; and the number of particle meshes and the density meet the product requirements.

The present invention discloses a magnetic separator, wherein the problem that the existing magnetic separator provides the relatively low adsorption efficiency for iron scraps in a liquid medium is solved with the magnetic separator of the present invention. The technical scheme comprises that the main body structure of the magnetic separator is a separated body, the separated body is provided with a power mechanism, a drive belt is arranged in the separated body, forms a transmission connection with the power mechanism, and is provided with a plurality of magnets, and the magnets are arranged at intervals along the length direction of the drive belt. The magnetic separator is characterized in that the separated body presents a Z shape and is provided with an infusion part, a rising part and a material discharge part, the three parts are smoothly connected into the integration, the rising part is positioned between the infusion part and the material discharge part, a separated surface is formed on the separated body surface and is an annular closed surface, the outer end portion of the material discharge part is the material discharge end, and a scraping device is arranged on the outer side of the separated body material discharge end and is used for scraping off the adsorbed substance on the separated surface along the material discharge direction.

The invention relates to the technical field of silicon carbide, in particular to silicon carbide ultrafine powder and a production method thereof, and the preparation raw material of the silicon carbide ultrafine powder is in-situ synthesized high-purity 6H-SiC micro-powder with a particle size of 2-5 mm. The production method comprises the following steps: carrying out ball milling on a siliconcarbide particle raw material; adding a foaming agent and mixed acid, carrying out a de-acidification treatment; carrying out magnetic separation by adopting a wet magnetic separator; adding a surfactant to react; carrying out microwave drying, and using an ultrasonic rocking sieve to perform screening so as to obtain silicon carbide ultrafine powder. The silicon carbide produced and prepared by the method is high in purity, the production efficiency is greatly improved, the production cost is reduced, products are consistent in density, uniform in composition and structure and good in reliability, and the silicon carbide ultrafine powder has a market prospect and is suitable for popularization.

The invention discloses an automatic ore feeding device for magnetic separators and an automatic ore feeding control method. A plurality of ore feeding openings in one-to-one correspondence with the parallel magnetic separators are formed in an ore distribution box, and the ore feeding openings are used for ore feeding of the magnetic separators correspondingly. A control unit is electrically connected with an ore feeding pump. The working current value of the ore feeding pump can be obtained, and the working current value of the ore feeding pump reflects the circulation amount of the ore dressing process. The control unit is electrically connected with a lifting driving mechanism and used for controlling the lifting displacement of the lifting driving mechanism. The lifting driving mechanism drives material plugs to move up and down in the ore distribution box, and therefore the opening and closing state and the opening size of each ore feeding opening are changed. According to the automatic ore feeding device for the magnetic separators and the automatic ore feeding control method, the on-site flow quantity change condition can be automatically detected, the automatic adjustmentof the ore feeding quantity of the magnetic separators, the start and stop of the magnetic separators and other operations are realized according to the flow quantity change condition, the convenienceof reasonably operating the number of the magnetic separators is improved, the frequency of climbing an ore distribution box platform of the magnetic separators by on-site operators is reduced, the labor intensity of the operators is reduced, and operation safety is ensured.

The invention belongs to the technical field of wastewater treatment, and particularly relates to a pretreatment device applying magnetic coagulation to reuse water of printed circuit board wastewater. The pretreatment device comprises a wastewater accommodating tank, wherein a raw water inflow pipe is fixedly arranged at the left end of the wastewater accommodating tank; a high-speed shearing machine is fixedly arranged at the right end of the wastewater accommodating tank; a first water inlet pipe is transversely arranged between and fixedly connected with the wastewater accommodating tank and the high-speed shearing machine; the left end of the first water inlet pipe is fixedly connected with the right side wall of the wastewater accommodating tank; the right end of the first water inlet pipe is fixedly connected with the left side wall of the high-speed shearing machine; a water outlet pipe is fixedly arranged at the right end of the high-speed shearing machine; and a magnetic separator is fixedly arranged at the lower end of the high-speed shearing machine. Thus, fine particles in the wastewater can be efficiently and completely treated, and water resources are prevented from being polluted by the fine particles in the wastewater when the wastewater is discharged.