3864 results about "Magnetic separation" patented technology

The invention discloses a method for recovering iron and titanium in vanadium titano-magnetite, and relates to the technical field of vanadium titano-magnetite beneficiation. Raw ore is crushed, and then is subjected to roller milling and screening to obtain oversize and undersize products; undersize products are subjected to weak magnetic pre-selection, tailings obtained after weak magnetic pre-selection and strong magnetic pre-selection are subjected to strong magnetic pre-selection, concentrate obtained after weak magnetic pre-selection and strong magnetic pre-selection are sequentially subjected to first-stage grinding, first-stage weak magnetic separation, second-stage grinding, second-stage weak magnetic separation and second-stage weak magnetic concentration, final iron ore concentrate is obtained, the obtained tailings are combined into iron separation tailings, then the iron separation tailings are subjected to titanium separation grinding, medium magnetic iron removal and strong magnetic roughing, and iron separation tailings are obtained. And tailings obtained after strong magnetic roughing are subjected to strong magnetic scavenging, concentrates obtained after strong magnetic roughing and strong magnetic scavenging are subjected to gravity roughing and gravity concentration, and final titanium concentrates are obtained. By adopting conventional crushing, high-pressure roller grinding, magnetic separation, pre-selection and tailing discarding, the subsequent ore grinding and selecting cost can be effectively reduced, the iron and titanium grades of the ore entering the grinding process are improved, high efficiency and energy conservation are achieved, and the ore dressing efficiency is improved.

The invention belongs to the technical field of magnetic separation equipment, and particularly discloses an air-blowing anti-blocking magnetic conduction module and a magnetic separator. The air-blowing anti-blocking magnetic conduction module comprises a center shaft, a plurality of magnetic conduction meshes are installed on the center shaft, an airflow channel is formed in the center shaft, circulation gaps are formed between the magnetic conduction meshes, and air outlet holes capable of distributing airflow to the circulation gaps are formed in the center shaft. The magnetic separator comprises a rack, an annular electromagnetic device and a material pipeline are arranged on the rack, and an air-blowing anti-blocking magnetic conduction module is installed in the material pipeline. According to the air-blowing anti-blocking magnetic separator, the magnetic conduction module in the magnetic separator is improved, in the magnetic separation process, air flow can be introduced into circulation gaps formed between the magnetic conduction meshes through the air flow channels, the air outlet holes and the like in the air-blowing anti-blocking magnetic conduction module, the air flow penetrates through meshes of the magnetic conduction meshes along with flowing of materials, and finally the air flow and the materials are discharged together; therefore, the passing ability of the materials is improved, the working efficiency of the magnetic separator is improved, meanwhile, tailings can be reduced, and waste of useful materials is reduced.

The invention discloses garbage power generation incineration slag sorting treatment equipment, and relates to the technical field of garbage crushing and sorting, the garbage power generation incineration slag sorting treatment equipment comprises a sorting frame, a feeding hopper is mounted on the sorting frame, a multifunctional crushing chamber is mounted in the middle of one side, away from the feeding hopper, of the sorting frame, and an atomization pouring chamber is arranged below the multifunctional crushing chamber; a sorting chamber is arranged on one side, far away from the multifunctional crushing chamber, of the atomization material pouring chamber; a uniform material distributing mechanism, a layered crushing mechanism and a sorting mechanism are further included; according to the scheme, the impact crushing layer and the rolling crushing layer which are stacked up and down are arranged, brittle slag blocks are rapidly crushed through the high-speed crushing hammer under the impact and shearing effects, metal is prevented from being repeatedly extruded and deformed, meanwhile, metal blocks are gently rolled through low-speed extrusion, the physical form integrity of the metal blocks is kept, and the service life of the metal blocks is prolonged. And compared with a traditional jaw crusher which mixes and crushes the metal and the slag blocks together, the jaw crusher has the advantage that the deformation rate of the iron blocks is reduced.

The invention relates to a flotation method for niobium-containing minerals, and belongs to the technical field of mineral separation. The method comprises the steps that niobium-containing ore is subjected to crushing, ore grinding and size mixing, obtained ore pulp is subjected to weak magnetic treatment to remove strong magnetic minerals, after the pH of magnetic separation tailings is adjusted, a flotation reagent containing an iron mineral inhibitor and an amine collecting agent is added for silicon-niobium bulk flotation, and after the pH of obtained silicon-niobium bulk concentrate is adjusted, the obtained silicon-niobium bulk concentrate is subjected to flotation separation. And a flotation reagent containing a hydroximic acid metal organic complex collecting agent and a siliceous mineral inhibitor is added for silicon-niobium separation flotation, and niobium concentrate is obtained. According to the method, iron gangue mineral removal is achieved through step-by-step flotation by means of the amine collecting agent, silicon separation is achieved by means of the hydroximic acid metal organic complex collecting agent, efficient enrichment of the niobium mineral is achieved, the step of strong magnetic iron removal is avoided, the process is simplified, and the loss rate of the niobium mineral is reduced.

The invention discloses a method for increasing the phenol yield through catalytic pyrolysis of a decommissioned fan blade, and relates to the technical field of waste composite material resourceful treatment.The method comprises the steps that decommissioned fan blade fragment materials obtained after crushing and magnetic separation are subjected to multispectral imaging, multispectral data are obtained, and pretreatment is conducted; performing spectral feature extraction on the preprocessed multispectral data by using a convolutional neural network; identifying and separating the fragment materials based on spectral characteristics and automatic separation equipment; carrying out activation and carbonization treatment on the separated balsa wood fragments to prepare a carbon-based catalyst; carrying out catalytic pyrolysis on the separated fragment material by utilizing an automatic adjusting reactor and a carbon-based catalyst; collecting a product generated by catalytic pyrolysis, and carrying out qualitative and quantitative analysis on phenols to obtain a qualitative analysis result and a quantitative analysis result. According to the method, through a mode of combining multispectral imaging and the convolutional neural network, different types of composite materials are accurately identified and classified.

The invention discloses a steel slag dry-method treatment system and a whole-process waste heat recovery process, and belongs to the technical field of steel slag treatment and waste heat recovery. According to the technical scheme, the system comprises a high-temperature section waste heat recovery system, a medium-low temperature section waste heat recovery system and a steel slag secondary separation and tailing digestion system. Firstly, steel slag discharged from a smelting furnace enters a high-temperature section waste heat recovery system, and heat is recovered by adopting a vertical waste heat recovery device through air heat exchange. Afterwards, the steel slag subjected to rolling crushing enters a medium-low temperature section waste heat recovery system, and heat of the steel slag is directly exchanged and recovered through a kiln type waste heat recovery device. And finally, iron-containing materials and tailings are separated from the steel slag through magnetic separation, and the tailings can be comprehensively utilized after being digested by digestion gas. The method has the beneficial effects that the whole-process waste heat recovery of the steel slag discharged from the smelting furnace can be realized, the resource recovery rate is improved, and the problems existing in steel slag treatment in the current steel industry are effectively solved.

The invention discloses a method for producing iron powder by solid reduction treatment of copper smelting slag in a rotary kiln. Copper slag powder is obtained by crushing the copper smelting slag; carrying out solid-state reduction on the pellets containing the copper slag powder in a rotary kiln; carrying out magnetic separation on the reduced material to obtain iron powder and tailings; the pellets are fed into the rotary kiln from the tail of the rotary kiln, air is blown into the rotary kiln from a kiln head, and the reduced materials are discharged from the kiln head; the raw materials of the pellets comprise copper slag powder, limestone powder and pulverized coal. According to the method, the copper smelting slag is subjected to solid-state reduction treatment through the rotary kiln to comprehensively recover and produce the iron powder, and treatment and resource recycling of the copper smelting slag are achieved; the reduction, harmlessness and recycling of the industrial waste residues are realized, the investment is saved, the energy is saved, the consumption is reduced, the operation cost is low, and the popularization is easy.

The invention discloses a method for converting niobium minerals in niobium rough concentrate into pyrochlore. The method comprises the following steps: (1) mixing the niobium rough concentrate with a modifier, a fluorine-containing reagent, a reducing agent and a binder, and carrying out compression molding; and (2) roasting the mixed blank for a set time, preserving heat, and quenching to obtain pyrochlore type rough concentrate. The method comprises the following steps: (1) carrying out magnetic separation on pyrochlore type rough concentrate; (2) performing heating and acid leaching on the magnetic separation tailings; and (3) carrying out flotation to obtain niobium concentrate. According to the method, iron components in the rough concentrate are reduced into magnetic iron minerals, niobium minerals are converted into non-magnetic pyrochlore, follow-up niobium-iron separation is facilitated, and the grade of niobium in the niobium concentrate obtained through production can be effectively improved; and the method is high in adaptability to niobium rough concentrate, is also applicable to alkaline or acidic niobium rough concentrate, is relatively small in gangue mineral change and low in conversion reaction temperature, and has the advantages of energy conservation and emission reduction compared with other regulation and control processes.

The invention relates to the technical field of rare earth waste recovery, in particular to a rare earth waste recovery process monitoring system and method based on industrial data processing, and the method comprises the steps: importing component composition data and magnetic characteristic data of rare earth waste in a rare earth waste magnetic separation process into a rare earth waste magnetic separation state analysis model; analyzing the magnetic separation state of the rare earth waste in the magnetic separation process of the rare earth waste; importing the equipment state data of the recovery equipment into the recovery equipment processing state analysis model, and analyzing the equipment processing state of the recovery equipment in the rare earth waste magnetic separation process; according to the rare earth waste magnetic separation state analysis result and the equipment treatment state analysis result of the recovery equipment in the rare earth waste magnetic separation process, the magnetic separation treatment benefit of the rare earth waste is evaluated; and according to the magnetic separation treatment benefit evaluation result of the rare earth waste, optimization early warning is conducted on the subsequent recovery process of the rare earth waste. And by analyzing the equipment state and sorting parameters, the rare earth treatment benefit is improved, and the equipment energy consumption cost is reduced.

The invention relates to the technical field of injection molding waste plastic recovery, in particular to injection molding equipment and a process for producing plastic automobile ornaments. The equipment comprises an injection machine and an online recycling mechanism, the injection machine is provided with a double-channel solution cavity composed of a new material main runner and a waste material returning cavity, and the tail ends of the two channels converge in a 30-degree Y shape; the on-line recovery mechanism comprises a waste conveyor belt, a crushing mechanism and a transmission device, a magnetic separation impurity removal device is arranged in the crushing mechanism, and a discharge end is connected with the batching mechanism. Through double channels and a Y-shaped confluence structure, production waste is subjected to online recovery and crushing and then is fused, mixed and reused with new materials, the waste utilization rate is increased, and the cost is reduced. The magnetic separation and impurity removal device efficiently removes metal impurities through the movement of inclined avoiding, rotary impurity scraping and inclined discharging of a scraping plate; the batching mechanism removes dust to prevent impurities from affecting melt performance. The crushing device adapts to different waste materials, airflow assists discharging to improve the efficiency, and the green production concept is met.

The invention discloses a preparation method and application of a full-particle-size steel slag gradient carbonized artificial aggregate suitable for an asphalt ultrathin wearing layer, relates to a preparation method and application of an artificial aggregate, and aims to solve the technical problems that the strength of the existing carbonized steel slag aggregate is low, and multi-element solid waste resources cannot be comprehensively utilized. The method comprises the following steps: carrying out crushing, magnetic separation and screening on steel slag to obtain particles with different particle size grades; and sequentially carrying out pre-curing, granulation curing, pre-curing and post-curing treatment on each grade of particles to obtain the full-particle-size steel slag gradient carbonization artificial aggregate. The average carbon fixation amount of the aggregate is 12.4%, the average free calcium oxide content is 0.32%, the average compressive strength is 54.32 MPa, and the volume expansion rate is 0.32% when the aggregate is kept at the temperature of 60 DEG C for 5 days. When the aggregate is used for preparing an ultrathin wearing layer SMA-10 type asphalt mixture, the dynamic stability is 13285 times / mm, the immersion Marshall is 96.5%, and the anti-skid BPN value is 0.76. The method can be used in highway fields.

According to the preparation method of the low-temperature humified coal gangue-agriculture and forestry solid waste porous slow-release humic acid water-soluble fertilizer, the coal gangue is subjected to magnetic separation and flotation to remove impurities, then the composite chlorinating agent is used for low-temperature chlorination, heavy metal is effectively removed, and meanwhile energy consumption and environmental risks are reduced. Then, under a controlled low-temperature condition, through microwave assistance and specific atmosphere adjustment, a humification reaction is triggered, meanwhile, formation of a porous structure of the material is triggered, and the water solubility and the slow release effect of the fertilizer are enhanced. According to the method, the resource utilization rate of the coal gangue is increased, the high-efficiency soil conditioner is effectively generated through an innovative low-temperature treatment process, and good environmental protection benefits and economic values are achieved. Through the structural design of the obtained fertilizer, the fertilizer can respond to environmental factors, the nutrient release rate is automatically adjusted, and plant absorption and soil health are optimized.

The invention provides a self-heating tempering and valuable metal partition recycling method for copper smelting slag. The method comprises the steps that S1, a slag tempering agent is prepared from industrial sulfate waste and a low-cost carbonaceous reducing agent; s2, in the copper smelting matte smelting deslagging process, a tempering agent is added into molten slag, and phase adjustment reaction is completed through latent heat of the molten slag; s3, after the slag is slowly cooled, classifying the upper part and the lower part of materials in the slag ladle, and performing conventional crushing, ore grinding and flotation on the upper part to recover valuable metals; and S4, the lower part of sulfonium-rich slag enters a direct return smelting system or is crushed and levigated, and then copper concentrate is recycled through magnetic separation-reverse flotation. According to the copper smelting slag self-heating tempering and valuable metal partition recycling method, synergistic low-carbon treatment is conducted on copper smelting slag and sulfate waste residues according to the concept of treating waste with waste, the method has the advantages of being high in metal recycling rate, low in cost, environmentally friendly, simple in process and material and the like, good economic benefits and environmental benefits are achieved, and the industrial popularization difficulty is small.

The invention discloses a method for preparing activated carbon by using waste tire pyrolytic carbon black, which comprises the following steps of: selectively and dynamically screening and removing magnetic impurities, namely dynamically screening a pyrolytic product through an airflow grading device, separating out high-purity carbon black particles with the particle size of less than 10 microns, and removing metal impurities and residual steel wires by using a magnetic separation technology to obtain the activated carbon. And the purity of the carbon black reaches 95% or above. Therefore, the pore structure is optimized through combination of a wet method and high-temperature activation, the pore distribution is further maintained, regulated and controlled through freeze drying and solvent heat treatment, the specific surface area of the finally prepared activated carbon reaches 1500-2000 m < 2 > / g, and the pore volume retention rate reaches 90% or above; the technology not only effectively solves the problems of insufficient carbon black purity, unstable pore structure and high energy consumption in the prior art, but also remarkably improves the adsorption performance and chemical stability, so that the carbon black is widely applied to the fields of water treatment, gas adsorption, catalyst carriers and the like, and has the outstanding advantages of high efficiency, low consumption and environmental protection.

The invention relates to the technical field of non-ferrous metallurgy, and discloses a dissolution method of high-iron-monohydrate-boehmite type bauxite. The method comprises the following steps: (1) preparing mixed ore pulp from high-iron monohydrate bauxite, sodium aluminate circulating mother liquor and an additive; the additive is one or a mixture of more of organic alkali, carboxylic acid and amino acid; (2) the mixed ore pulp is subjected to ultrasonic treatment and then heated to 190-280 DEG C for a dissolution reaction, dissolution slurry and dissolution residues are obtained, the dissolution residues are subjected to magnetic separation and recovery, and iron ore concentrate is obtained; the power of the ultrasonic treatment is 200 to 300W, and the time of the ultrasonic treatment is 30 to 50 minutes. According to the method, the problem that iron minerals are difficult to separate due to silicon minerals in the dissolution process of the high-iron monohydrate bauxite is solved. The method is simple in process, low in production cost, low in equipment requirement and good in industrialization prospect.

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 discloses a self-adaptive adjustment magnetic separation-membrane filtration coupling sewage treatment system and a self-adaptive adjustment magnetic separation-membrane filtration coupling sewage treatment method. The system comprises a pretreatment unit, a magnetic separation core unit, a self-adaptive intermediate buffer unit, a membrane filtration unit and a sludge treatment unit which are communicated in sequence. The core of the system is that a plurality of on-line sensors are linked through a central control system, water quality parameters are monitored in real time, the adding amount of magnetic powder and a coagulant, the rotating speed of a stirrer, the membrane flux, the backwashing period and a cleaning program are adjusted in a self-adaptive mode, and intelligent cooperation and accurate regulation and control of magnetic separation and membrane filtration processes are achieved. According to the invention, the problems of easy membrane pollution, high magnetic powder consumption, high operation cost and dependence on manual operation in the traditional process are effectively solved, the service life of the membrane is obviously prolonged, the operation and maintenance cost is reduced, and the effluent quality is stable and meets the high-standard discharge or reuse requirement.

The invention belongs to the technical field of ore magnetic separation recovery, and particularly relates to a rare earth functional material green production recovery device which comprises a machine body, one side of the machine body is fixedly connected with a fixed motor, the output end of the fixed motor is fixedly connected with a magnetic separation roller, the magnetic separation roller is in transmission connection with a conveying belt, the upper surface of the machine body is fixedly connected with a feeding port, and one side of the machine body is provided with a collecting frame. A baffle is rotationally connected into the machine body, a cooling assembly is arranged in the machine body and comprises a fixing plate fixedly connected into the machine body, a plurality of spraying holes are formed in the surface of the fixing plate and all face the magnetic separation roller, a pressure box is fixedly connected to one side of the machine body, and the side, penetrating through the machine body, of the fixing plate is fixedly connected with the pressure box. Water is stored in the pressure tank, the pressure tank is arranged in the pressure tank, and the cooling assembly is arranged, so that the problem that the magnetic separation quality is reduced due to magnetic property degradation of a permanent magnet material caused by the temperature rise effect of the magnetic separation roller is solved.

The invention discloses a method for asynchronously recovering copper and cobalt in sulfur-oxygen mixed copper-cobalt ore tailings through dressing and smelting combination. The sulfur-oxygen mixed copper-cobalt ore tailings are divided into a coarse fraction, a medium fraction and a fine fraction according to particle sizes; the coarse fraction is subjected to ore grinding and copper sulfide flotation, part of copper and cobalt are recycled, and coarse fraction tailings are obtained; the medium fraction is subjected to copper sulfide flotation, copper oxide flotation and magnetic separation, part of copper and cobalt are recycled, and medium fraction tailings are obtained; the fine fraction is subjected to magnetic separation, part of copper and cobalt are recycled, and fine fraction tailings are obtained; and neutralizing one or more than two of the coarse-fraction tailings, the medium-fraction tailings and the fine-fraction tailings to recover part of copper and cobalt. According to the characteristics of the sulfur-oxygen mixed copper-cobalt ore tailings, the sulfur-oxygen mixed copper-cobalt ore tailings are divided into different size fractions, and different grading processes are adopted for treatment. And efficient enrichment and recovery of copper minerals and cobalt minerals with different properties in the sulfur-oxygen mixed copper-cobalt ore tailings are realized through a multi-process combined grading process.

The invention relates to the technical field of decoration garbage resource recycling, in particular to decoration garbage resourceful treatment production equipment and method, and the method comprises the steps that decoration garbage is evenly scattered on a conveying belt; the decoration garbage on the conveying belt is sorted; the sorted decoration waste is subjected to primary crushing and then screened, and first aggregate and second aggregate are obtained; magnetic separation is conducted on the first aggregate and the second aggregate through a magnetic separator; controlling magnetic separation current in the magnetic separation process of the magnetic separator, performing secondary crushing on the magnetically separated second aggregate, mixing the magnetically separated second aggregate with the magnetically separated first aggregate, and performing winnowing; screening the winnowed aggregate, and if the aggregate with the particle size larger than the preset particle size exists after screening, performing secondary crushing on the aggregate again to obtain the aggregate meeting the preset particle size; the aggregate meeting the preset particle size is subjected to three-stage crushing and screening, and then fine aggregate, medium aggregate and coarse aggregate are obtained. Therefore, the quality of the recycled aggregate of the decoration garbage is improved.

The invention discloses a beneficiation method for efficiently recovering barite from heat treatment drilling waste. The beneficiation method comprises the following steps that (1) the drilling waste containing the barite is subjected to wet screening classification; (2) performing magnetic separation on the undersize product to obtain a magnetic product and a non-magnetic product; (3) carrying out primary roughing and primary concentration on the non-magnetic product to obtain a barite powder product 1; and (4) the roughing tailings are subjected to scavenging for three times, scavenged concentrates are combined and then subjected to fine selection for two times, and a barite powder product 2 is obtained. According to the method, barite in the heat treatment drilling waste is efficiently recycled by adopting a beneficiation method, two different grades of barite powder products are obtained and can serve as drilling fluid raw materials to be recycled, resource utilization of the waste is achieved, and meanwhile environmental hazards are reduced.

The invention discloses a scrap aluminum classification and rapid identification method, and relates to the field of scrap aluminum classification and rapid identification, the method comprises the following steps: S1, grading pretreatment: to-be-sorted scrap aluminum is conveyed into a three-layer vibrating screen machine through a conveying belt for grading screening, and different sizes of scrap aluminum are sorted out; and S2, impurity separation is conducted, specifically, the classified scrap aluminum is conveyed into a drum-type magnetic separator, magnetic impurities are removed, then the scrap aluminum subjected to magnetic separation is conveyed to an airflow separator, light non-metal impurities are separated, then the scrap aluminum is conveyed to an objective table through a conveying belt, full-process automatic treatment is conducted, manual dependence is reduced, the production efficiency is improved, and the production cost is reduced. A single production line can reduce the workload of sorting workers; and compared with manual sorting, due to the fact that classification is accurate, the rejection rate of the regenerated aluminum alloy can be effectively reduced, and economic benefits are remarkably improved.

The invention discloses a quartz sand impurity removal device for producing glass in the technical field of glass production, which comprises an acid pickling box, a pretreatment shell fixed at an upper opening of the acid pickling box, and a first buffer mechanism and a second buffer mechanism which are positioned in the pretreatment shell and used for controlling the falling speed of quartz sand, the magnetic separation mechanism is used for removing iron from the quartz sand; the negative pressure mechanism is used for sucking dust and smoke; the grinding mechanism is used for removing attachments on the surface of quartz sand, the quartz sand drives the magnetic separation mechanism and the negative pressure mechanism to act through the first buffer mechanism, then falls on the grinding mechanism after passing through the second buffer mechanism, enters the pickling box after being ground, and is subjected to impurity removal such as magnetic separation, dust collection, smoke suction and grinding in the pickling pretreatment process of the quartz sand; impurities such as iron, dust and surface attachments before pickling of the quartz sand can be removed to a great extent, so that the finished product quality of the quartz sand in the pickling process is ensured.

The invention discloses a fluoride-free flotation-microbiological leaching-multistage magnetic separation synergistic tailing purification process, which takes mine tailings as raw materials and is realized by the following steps: 1, fluoride-free flotation desliming and impurity removal: replacing hydrofluoric acid with a novel anion collector (fatty acid derivative), and preferentially removing mica and feldspar under the condition that the pH is 2.5-3.5; 2, removing iron and aluminum by microbiological leaching: leaching for 48 hours at the temperature of 35 DEG C by utilizing an acidophilus bacillus ferroxidans bacterial solution, and dissolving Fe2O3 and Al2O3 in a wrapped state; 3, high-gradient magnetic separation refining: removing magnetic minerals through 1.2 T strong magnetic separation, and then separating weak magnetic impurities through 0.8 T weak magnetic separation; the indexes of the final product are as follows: the purity of SiO2 is greater than or equal to 99.9%, the whiteness is greater than or equal to 94% (ISO standard), the content of Fe2O3 is less than or equal to 80ppm, Al2O3 is less than or equal to 1200ppm, and the requirements of electronic grade (IOTA-4 standard) quartz powder are met.

The invention discloses a mineral separation magnetic separator for muddy tungsten polymetallic ore and a recovery system for recovering black tungsten, and relates to the technical field of mineral separation of the muddy tungsten polymetallic ore. The blending box is used for blending raw material ore pulp with the concentration of 30%; the bottom of the blending box is transmitted to the permanent magnet separator through a transmission pump connecting pipeline, and a return pipeline I and a circulating pump I are mounted on the permanent magnet separator; magnetically separating the raw ore pulp by a permanent magnetic separator to obtain weak magnetic concentrate pulp; the bottom of the permanent magnetic separator is provided with a transmission pipeline and connected with the high-intensity magnetic separator, and the transmission pipeline is connected with a transmission pump; the concentrate thickener is used for blending and concentrating to obtain concentrated ore pulp with the concentration of 25-35%; a centrifugal concentrator; a return pipeline II and a circulating pump II are arranged on the centrifugal separator, and the number of cycles is three; and the frequencies of the centrifugal separator are respectively 50HZ, 40HZ and 30HZ. The technical problems that argillization tungsten ore cannot be recycled, and materials with proper tungsten concentration cannot be selected through magnetic separation and gravity separation, and the recycling difficulty is large are solved.

The invention provides a beneficiation and enrichment method for high-molybdenum oxide ore, which comprises the following steps of: performing fraction magnetic separation on a product after ore grinding, regrinding magnetic separation coarse particle tailings, mixing the reground product with magnetic separation fine fraction tailings to perform low-potential sulphide ore flotation, performing oxidized ore flotation on sulphide ore flotation tailings, and the like. And finally, the molybdenum concentrate with the high recovery rate and grade is obtained, the molybdenum ore separation and enrichment effect is achieved, and the fine disseminated-particle-size refractory molybdenum oxide ore resources in the high-oxidation-type molybdenum ore are effectively and comprehensively recycled. In order to quickly optimize and obtain the optimal condition of oxidized ore flotation, the flotation inhibitor with the good inhibition effect is determined through the pure ore flotation test, the flotation collecting agent with the high selectivity is selected through the molecular simulation calculation method, and the flotation efficiency and selectivity are improved. The method provided by the invention can be widely applied to the fields of development of high-oxidation molybdenum ore mines and recycling of fine-fraction refractory molybdenum oxide ore resources in tailings after sulfuration flotation.

The invention relates to the technical field of coal gangue magnetic separation, in particular to a coal gangue magnetization fluidized roasting device which comprises a raw material preprocessing module, a fluidized magnetization roasting module, a magnetic separation module, a data center module and a mass feed module. The raw material preprocessing module realizes gradient crushing and dynamic screening of coal gangue through a multi-stage crushing unit and a closed cycle pneumatic classification device, and the online particle size analysis device monitors particle size data in real time and transmits the particle size data to the data center module; the fluidization and magnetization roasting module adopts a double-cavity reaction tower structure, and is combined with an infrared thermal imager array and a PI (Proportional Integral) controller to regulate and control the mixing proportion of fluidization gas and inhibit the oxidation of ferric oxide; through multi-module data driving optimization, the technical problems of insufficient multi-variable coupling regulation, low separation precision and high energy consumption are solved, and low-carbon efficient resourceful treatment of the coal gangue is realized.

The invention belongs to the technical field of mineral separation processes, and particularly relates to a magnetic separation process for low-grade potassium feldspar ore, which comprises the following steps: (1) crushing: crushing low-grade potassium feldspar raw ore; (2) ore grinding: grinding the fine particle raw materials to obtain ore pulp; (3) desliming: desliming the ore pulp to obtain a material containing magnetite and other weakly magnetic minerals; (4) removing strong magnetic magnetite through weak magnetic separation; (5) superconducting magnetic separation: carrying out superconducting magnetic separation on the magnetite-removed material to obtain potassium feldspar concentrate; (6) concentration is conducted, specifically, concentrate is subjected to concentration, and residual impurities are removed; and (7) dewatering and drying: dewatering and drying the concentrated concentrate to obtain a final product. According to the method, a two-step magnetic separation process is adopted for the low-grade potassium feldspar raw ore, weakly magnetic iron-containing impurities in the potassium feldspar raw ore are effectively removed, the impurity removing and whitening effects are achieved, the potassium feldspar powder with high purity and high whiteness is obtained, and the method is free of pollution and suitable for large-area application and popularization.

The invention discloses a method and device for reducing tail water plume of a deep-sea mining vehicle. The device comprises a crushing device, a liquid storage device, a centrifugal action device, an intelligent control device, a magnetic seed laying and recycling device and a super-magnetic separation device. The crushing device comprises a crusher, the liquid storage device comprises a liquid storage tank and a control valve, the liquid storage tank comprises a coagulant aid liquid storage tank and a coagulant liquid storage tank, the centrifugal action device comprises a centrifugal machine, a magnet, a liquid conveying pipe and a magnetic seed dispenser, and the centrifugal action device screens particles with different diameters in a water body to different layers through centrifugation. Under the action of the magnet, the magnetic field intensity in each layer is different, and the magnetic seeds with different particle sizes are combined with particle impurities in seawater under the action of a coagulant aid coagulant, so that a better flocculation effect is realized. Polyferric sulfate is adopted as a coagulant and can be used for treating heavy metal ions in water, polyacrylamide is adopted as a coagulant aid, suspended solids and colloidal particles in water can be effectively captured and adsorbed, and sedimentation and separation of the suspended solids and colloidal particles are promoted.

The invention discloses a comprehensive utilization process for kaolin tailings. The comprehensive utilization process comprises the following steps: scrubbing the kaolin tailings; the scrubbed kaolin slurry is sieved by a 5mm linear sieve, waste rocks of + 5mm are used as sand-gravel materials, and the waste rocks of-5mm are classified into 2-5mm, 0.1-2mm and-0.1 mm; the method comprises the following steps: grinding and grading ore with the particle size of 2-5mm, returning and regrinding the ore with the particle size of + 0.6 mm, removing tail mud with the particle size of-0.045 mm by grading the ore with the particle size of-0.6 mm, carrying out magnetic separation on the ore with the particle size of 0.045-0.6 mm, carrying out 1-2 sections of strong magnetic separation on the obtained magnetic separation concentrate to obtain strong magnetic concentrate, heating, adding chemicals, scrubbing, and carrying out chemical removal, desliming and washing to obtain primary photovoltaic glass sand and graded fine sand; the method comprises the following steps of: grinding and screening the ore with the particle size of 0.1-2mm, grinding and screening the ore with the particle size of + 0.6 mm until the ore with the particle size of-0.6 mm is completely ground, carrying out spiral chute reselection on the ore with the particle size of-0.6 mm to obtain heavy ore and light ore, carrying out 2-3 sections of magnetic separation on the light ore to obtain magnetic concentrate, carrying out flotation to obtain mica, carrying out graded desliming on the product in a flotation tank, and carrying out graded fine sand with the particle size of-0.1 mm; carrying out heating, chemical adding and scrubbing at the particle size of 0.1-0.6 mm, and then carrying out chemical removal, desliming and washing to obtain secondary photovoltaic glass sand; the yield of the obtained product is higher, and the product index is better.