71results about "Solid separation" patented technology

This application relates to the field of bauxite beneficiation technology, and more particularly to a dry beneficiation method for high-iron bauxite. High-iron bauxite includes iron minerals and aluminum minerals. The dry beneficiation method includes: sequentially crushing and classifying the high-iron bauxite to obtain coarse-grained raw ore, intermediate-grained raw ore, and fine-grained raw ore; dry gravity separation of the coarse-grained raw ore to obtain a first aluminum mineral and a first iron mineral; photoelectric separation of the intermediate-grained raw ore to obtain a second aluminum mineral and a second iron mineral; dry magnetic separation of the fine-grained raw ore to obtain a third aluminum mineral and a third iron mineral; merging the first, second, and third aluminum minerals to obtain aluminum concentrate; merging the first, second, and third iron minerals to obtain iron mineral crude; and finely cleaning the iron mineral crude to obtain iron concentrate product. This dry beneficiation method improves the separation effect of aluminum and iron minerals in high-iron bauxite by differentiating the raw ore of different particle sizes and using a synergistic all-dry process.

The present application belongs to the technical field of mineral separation, and particularly relates to a bridge liquid for oil agglomeration separation of micro-fine particles and a preparation method thereof. The preparation method comprises two-step emulsification and two-step dilution. First, a W / O emulsion is prepared by using an oil phase, a lipophilic emulsifier and an inorganic salt solution. After dilution and adjustment of the internal water phase, an external water phase is prepared by using water, a hydrophilic emulsifier and an inorganic salt solution. Then, the W / O emulsion and the external water phase are mixed to obtain a W / O / W emulsion. Finally, the W / O / W emulsion is diluted by deionized water to obtain a high internal phase W / O / W emulsion. The emulsion prepared by the present application has good microdroplet dispersibility, high internal water phase ratio, stable internal structure and low viscosity. As the bridge liquid, the emulsion can construct high-water-content discrete oil bridges in situ between particles after adhesion to micro-fine particles, thereby improving dispersibility and strengthening stability control.

The application provides a beneficiation method for recovering heteropolar ore from lead-zinc sulfide tailings. The method comprises the following steps: mixing the lead-zinc sulfide tailings with water to prepare a first slurry; grading the first slurry to obtain a sand product and an overflow product; adding water to the sand product to prepare a second slurry; adding a predetermined amount of an inhibitor, sodium sulfide and a collector into the second slurry to perform rough flotation of the heteropolar ore, and obtaining a rough flotation froth product and a rough flotation tank bottom product; performing three times of cleaning on the rough flotation froth product to obtain a concentrate product; performing one time of scavenging on the rough flotation tank bottom product to obtain a scavenging froth and a scavenging underflow; and combining the scavenging underflow with the overflow product to obtain a final tailings. Through the above method, the adverse effects of the slime can be reduced under the condition of reducing the loss of the heteropolar ore as much as possible, and the flotation reagent system of the sand product is optimized on this basis, so that the heteropolar ore can be effectively recovered simply and efficiently, and the resource utilization rate is improved.

The application provides an automatic control method and system of a self-adaptive elutriation machine, wherein the overflow concentration of the elutriation machine is a fixed point, and the dead zone range, the initial set value of the underflow concentration and the real set value of the underflow concentration are set; the actual overflow concentration and the actual underflow concentration are monitored in real time; when the actual overflow concentration exceeds the dead zone range and the actual underflow concentration is in the corresponding variable zone, the real set value of the underflow concentration is automatically adjusted, and then the opening of the underflow valve is adjusted. Through the cyclic monitoring and successive correction, the overflow concentration is stabilized in the set range, the self-adaptive approximation of the underflow concentration is realized, the problem of the decrease of the concentrate grade caused by the change of the properties of the incoming ore in the existing fixed underflow concentration control mode is overcome, and the stable operation of the equipment and the quality of the concentrate are ensured.

The application discloses a kind of high-efficiency resourceization comprehensive utilization method of iron-containing dust sludge, comprising the following steps: (1) iron-containing dust sludge is stirred and pulped, and is treated by screening and residue separation, to obtain undersize material slurry;(2) undersize material slurry is subjected to flotation-weak magnetic-strong magnetic process or weak magnetic-strong magnetic process.The application can separate iron, carbon, zinc and potassium in iron-containing dust sludge at one time, without waste residue and wastewater discharge, and belongs to an environmentally friendly process.In the process technology route, efficient flotation, weak magnetic-strong magnetic separation technology is combined with mature potassium chloride crystallization process and mature zinc extraction technology, so that each component of iron-containing dust sludge is efficiently recycled and utilized.The process route of the application is simple, concise, efficient and reasonable, can be adapted to treat various iron-containing dust sludge, has strong overall adaptability, good economic benefits and high social benefits.

A material recovery system 2 for recycling mixed household-waste 4, comprising a first processing facility 8 to sort a recyclable portion 6 of the waste into recyclate glass 10, metal 12, plastic 14, and fibre 16 streams. Bulk storage areas for glass 20, metal 22, plastic 24, fabric 26 streams. A second processing facility 30 to sort non-recyclable portion 28 of the waste into a waste stream and at least one of second metal, plastic, and fibre streams. A third processing facility 30a to sort any another recyclable portion of the waste. A combiner and baler of the streams of recyclate metal, plastic, fibre streams, and a combiner of the glass streams. A method of processing and recycling mixed household-waste is further disclosed. Fig. 1

This invention discloses a method for the comprehensive utilization of sulfide tailings, relating to the field of sulfide tailings treatment technology. This method uses lead-zinc tailings as raw material and innovatively employs a combined "two-stage acid leaching-gravity separation-flotation" process. First, two stages of acid leaching selectively leach calcite associated with barite in the tailings, reducing the influence of muddy calcite while activating pyrite. Subsequently, the acid leaching residue undergoes gravity separation to further separate undissolved calcite, quartz, and other silica-containing gangue minerals. The gravity concentrate is then subjected to flotation to achieve the separation of barite and pyrite, ultimately obtaining high-purity barite and pyrite products respectively. This invention features a reasonable process route and simple operation, effectively solving the separation problem of fine-grained, high-viscosity lead-zinc tailings, achieving full-component purification and utilization of lead-zinc tailings, significantly enhancing the economic value of tailings resources, and reducing the environmental pressure caused by tailings stockpiling, thus demonstrating good economic, environmental, and social benefits.

This invention discloses a preparation method and application of a composite adsorbent based on iron and steel smelting dust, belonging to the field of environmental functional materials and heavy metal wastewater treatment technology. This invention proposes a synergistic modification strategy of "hierarchical enrichment – ​​low-temperature plasma activation – iron-lanthanum gradient doping – lattice vacancy hierarchical regulation – molding and solidification": firstly, the active components in the dust are concentrated and enriched through sieving, gravity classification, and magnetic selection; then, nanopores are etched and functional groups are introduced through low-temperature plasma activation to provide iron-lanthanum ion loading sites; a Fe-La stepwise equal-volume impregnation process is used to construct Fe-La-Mn ternary active centers in combination with Mn in the iron and steel smelting dust, and calcination is performed to form a multi-element heterojunction, La... 3+ With Ca in dust 2+ Lattice coordination lowers the formation energy barrier of oxygen vacancies; gradient oxidation-reduction treatment generates shallow and deep oxygen vacancies in stages, driving in-situ oxidation of As(III) and electron replenishment, respectively; finally, molding and solidification yields spherical adsorbents with a mechanical strength ≥16 N / particle. This invention enables the high-value utilization of iron and steel smelting dust, and the adsorbent is easy to recover and produces no secondary pollution, making it suitable for the deep treatment of arsenic-containing heavy metal wastewater.

The utility model provides a kind of roller type grain recovery device, belong to agricultural machinery technical field, including frame main body, the inside of frame main body is separately provided with the pre-separation cavity and main separation cavity communicated sequentially, the outside of frame main body is provided with transmission mechanism, the side of frame main body is provided with the waste outlet of intercommunication main separation cavity;The top of pre-separation cavity is provided with feed inlet, the bottom of pre-separation cavity is provided with first screen, the inside of pre-separation cavity is provided with separation auger, and multiple first peg tooth are spaced apart and arranged along the axis of separation auger;The bottom of main separation cavity is provided with second screen, the inside of main separation cavity is provided with separation roller, and the periphery of separation roller is provided with multiple second peg tooth.The utility model provides a kind of roller type grain recovery device, improves the overall stability and reliability of grain recovery device, better meet the modern agricultural efficient, accurate production demand.

This invention relates to the field of iron ore beneficiation technology and discloses a method for preparing efficient roasting and separation of refractory iron ore, comprising the following steps: S1, raw material pretreatment and pre-enrichment: refractory weakly magnetic iron oxide ore is crushed, and a dry separation method is used to pre-remove some low-grade waste rock to obtain pre-enriched rough concentrate; S2, intelligent grinding and drying; S3, magnetized roasting; S4, rapid quenching and stabilization of roasted ore. This invention, through rapid cooling (quenching) combined with an atmosphere protection process, stabilizes and solidifies the magnetism of the magnetized roasting product—magnetite—avoiding magnetic loss due to subsequent processing, providing a high-magnetic, stable feed for subsequent weak magnetic separation operations, which is a prerequisite for ensuring a high magnetic separation recovery rate; through strong magnetic separation to ensure recovery rate, combined with intelligent flotation to improve concentrate grade, a deep cleaning process is formed, achieving refined separation of complex roasting products, maximizing both the total iron metal recovery rate and concentrate grade simultaneously.

The utility model relates to coking coal technical field, a kind of for coking coal raw coal's washing and selecting gangue discharging device, including unloading shell, further include: support leg fixed on the surface of unloading shell, the side fixed connection of unloading shell has connecting plate, the top of the connecting plate inner cavity is provided with the first conveying device for conveying coal slime use. The utility model first through flow guide mechanism, can be separated into two discharge ports in unloading shell, and flow guide mechanism can adjust unloading port, directly ship middlings to the first conveying device on belt and recycle, by increasing middlings recycling system, middlings recycling, to reduce low-ash middlings, low-ash coal slime waste, through raw coal rapid sinking and floating test, judge raw coal belongs to gangue easy to sort coal kind, middlings, low-ash coal kind of coal, take the above three measures, middlings, coal slime is recycled, reduce material waste, improve clean coal yield, reduce cost.

The utility model discloses a novel flap action mechanism belongs to coal washing technology field, including the pivot, the pivot transverse through the both sides wall of chute, and through the shaft sleeve rotation connection on chute, the middle part fixed connection flap of pivot, and one end passes through chute and fixedly connected handle, and one end passes through the hanger of handle and is connected to the lifting mechanism, and the one end of handle is lifted through the lifting mechanism to drive the pivot rotation. The utility model has the advantages of being capable of avoiding the problems such as the jamming of flap, the difficulty of turning over and the like.

The utility model belongs to garbage sorting technical field especially relates to a garbage landfill surface layer muddy garbage sorting device. The utility model, including the frame, be provided with feeding mechanism, screening mechanism and magnetic separation mechanism on the frame, the feeding mechanism includes chain plate feeder and feeding conveyor, the output of chain plate feeder is connected with the input of feeding conveyor, the screening mechanism includes drum screening machine and comprehensive sorting machine, the output of feeding conveyor is connected with the input of drum screening machine, the magnetic separation mechanism sets up between drum screening machine and comprehensive sorting machine, the output of drum screening machine is connected with the input of magnetic separation mechanism. The utility model has realized to the efficient, accurate sorting of garbage landfill surface layer muddy garbage, not only solved the problem existing in the prior art, and has simple structure, convenient operation, high sorting efficiency, environmental protection effect is good and so on advantage.

This invention relates to the field of tailings flotation technology and discloses a high-value clean coal recovery system based on multi-stage flotation and synergistic control of mid-gangue magnetic tailings. The system includes a classification pretreatment unit employing a high-efficiency thickening and classifying hydrocyclone, a feed pump, and a pressure transmitter to separate mid-gangue magnetic tailings into coarse and fine particles. It also features a multi-stage gradient flotation unit composed of multiple flotation tanks connected in series. Each flotation tank is equipped with an independent stirring drive device, an aeration system, a liquid level adjustment mechanism, and a reagent dosing device. Furthermore, by setting different aeration volumes and stirring linear velocities, multi-gradient flotation operations including roughing, primary cleaning, secondary cleaning, and intermediate cleaning can be achieved. This multi-stage flotation and synergistic control system for high-value clean coal recovery of mid-gangue magnetic tailings simultaneously achieves efficient extraction of clean coal and upgrading and utilization of tailings slime through a systematic architecture of classification pretreatment, multi-stage gradient flotation, and closed-loop control.

This utility model relates to the field of brewing equipment, and more particularly to a sorghum impurity removal system for brewing sorghum that allows for a compact arrangement of processes when there are multiple sorghum impurity removal steps. The system comprises a feeding device, an impurity removal device, and a temporary storage device, including a first lifting device and a second lifting device. The starting end of the first lifting device is connected to the end of the feeding device, and the end of the first lifting device is connected to the starting end of the impurity removal device, with the end of the first lifting device at a higher height than the starting end. The starting end of the second lifting device is connected to the end of the impurity removal device, and the end of the second lifting device is connected to the starting end of the temporary storage device, with the end of the second lifting device at a higher height than the starting end. This utility model is particularly suitable for sorghum impurity removal scenarios where the interior space of a factory is limited by height.

The present application belongs to the technical field of mineral processing, and relates to a beneficiation method for full-quantitative recovery and utilization of associated copper-sulfur magnetite ore, comprising the following steps: dry separation of the crushed associated copper-sulfur magnetite ore (‑12 mm) is carried out, the tailings of the dry separation of the fine ore are subjected to wet screening, the screened product is used as a building material product, and the undersize product is subjected to classification in a subsequent first-stage cyclone; the dry separation coarse concentrate of the fine ore is subjected to one-stage grinding classification-weak magnetic separation; the concentrate of the first-stage weak magnetic separation is subjected to two-stage grinding classification-weak magnetic separation; the comprehensive tailings of the weak magnetic separation are subjected to middlings isolation-separation-concentration: the isolation is used as a building material for sale, and the concentrated underflow is subjected to mixed flotation; the mixed flotation concentrate is subjected to three-stage grinding classification-copper-sulfur separation flotation. The technical scheme effectively solves the problems of high energy consumption, unstable copper-sulfur separation indexes, large amount of fine tailings, and imbalance of "mining-beneficiation-filling" caused by the existing beneficiation process of associated copper-sulfur magnetite ore.

The present application relates to a kind of low-grade iron lepidolite ore flotation pre-concentration-magnetic separation upgrading method, belong to mineral processing technical field.The present application carries out coarse grinding, slurry conditioning to low-grade iron lepidolite ore, under the synergistic effect of combined reagent and flotation column, using two times flotation column roughing, can efficiently recover iron lepidolite in ore, then the lithium rough concentrate obtained by flotation is defoamed, and is finely ground, and it is enriched again by high gradient magnetic separation, i.e. high-quality lithium concentrate can be obtained.The flotation pre-concentration process used in the present application only includes two roughing operations, no cleaning and scavenging operations, and does not involve middlings return, which can avoid the circulation of slime in the flotation system, and using flotation column as a separation device can improve the pre-concentration effect of micro-fine particle grade iron lepidolite, greatly reducing the ore processing capacity and energy consumption of subsequent process;Using high gradient magnetic separation can effectively separate iron lepidolite ore and gangue minerals such as muscovite, which is fully dissociated by fine grinding process, to realize lithium concentrate upgrading and impurity reduction.

A concrete slip recycling system 100 with a concrete-slip classifier for separating concrete slip in aggregates and a fluid phase comprising fines and with and with a fluid-phase reservoir 140, a first conduit 130 connecting the concrete-slip classifier 120 and the fluid-phase reservoir 140 can be operated with a reduced energy consumption if the fluid-phase reservoir 140 comprises an observable meter 145 for metering an observable indicative of the density of the fluid phase stored in the fluid-phase reservoir 140r and / or of a change of the density of the fluid-phase stored in the fluid-phase reservoir 140 and if a controller 40 operates an agitator of the fluid phase reservoir 140 in response the metered observable or a change thereof.

The present application relates to the technical field of mineral processing, in particular to a phosphate rock flotation process intelligent auxiliary control system and method based on LIBS online detection technology, the system comprises a real-time sensing layer, a digital twin layer, an intelligent decision-making layer and an automatic execution layer; the real-time sensing layer realizes real-time online detection of multiple elements such as P2O5 and MgO of raw ore, concentrate and the like through a multi-node knife-edge sampler, a multi-path splitter and an online laser spectrum analyzer; the digital twin layer adopts a mechanism and data-driven fusion model to complete grade soft measurement and ultra-real-time prediction; the intelligent decision-making layer generates operation variable optimization instructions such as reagent addition amount and liquid level in combination with expert rules and optimization algorithms; and the automatic execution layer issues the instructions to the field execution mechanism to form a closed-loop control. The present application realizes digital and intelligent operation of the flotation process, improves product quality stability, reduces reagent consumption and production cost, and improves resource comprehensive utilization efficiency.

The application provides a new energy electric vehicle lithium battery recycling device and a lithium battery processing technology, and relates to the technical field of new energy electric vehicle lithium battery recycling. The new energy electric vehicle lithium battery recycling device comprises a rack, a skirt conveyor, a manual classification unit, a coarse crushing unit, a magnetic separation unit, a fine crushing unit, an air flow separation unit, a bag type dust removal unit and a waste gas treatment unit. The skirt conveyor is installed on the inner side of the rack. The manual classification unit, the coarse crushing unit, the magnetic separation unit, the fine crushing unit, the air flow separation unit, the bag type dust removal unit and the waste gas treatment unit are sequentially installed on the rack. The new energy electric vehicle lithium battery recycling device and the lithium battery processing technology can gradually process new energy electric vehicle lithium batteries through each unit. The bag type dust removal unit can make the cloth bag tense or shrink, and can automatically remove dust on the cloth bag, thereby improving the filtering effect.

The present application belongs to the technical field of comprehensive utilization of industrial solid waste resources, and relates to a full-component gradient recovery method and system of fly ash, comprising the following steps: pretreatment of powder; impurity removal of powder; magnetic bead product and demagnetization of powder; carbon-rich product and decarburization of powder; floating beads, sinking beads and ultra-fine fly ash. The present application can effectively reduce the water content of fly ash and eliminate the agglomeration and adhesion between particles by sequentially performing drying, depolymerization and homogenization pretreatment, so that the original small physical property differences between components can be highlighted and enlarged, creating good material conditions for subsequent separation. On this basis, by sequentially performing sorting, magnetic separation, electric separation and multi-stage air classification, each component can be accurately separated and gradually enriched by using the differences in particle size, magnetism, electrical property and density, thereby forming a systematic and gradient full-component sorting and recovery process, effectively improving the sorting efficiency and recovery rate of each component, and improving the product purity and quality stability.

The application discloses a method for separating and recycling sandy and clayey components in fully weathered granite. The method first changes the physical state of the material by crushing and agglomerating the raw material and quantitatively spraying water to mature it; then realizes the separation of sand and clay through a double-shaft variable-speed stirring and rubbing equipment, and simultaneously uses a negative pressure exhaust system to preliminarily separate and dry the clay powder; after rubbing, the material is screened by a high-frequency flip-flow screen to prevent blocking and is centrifugally separated by a hydrocyclone group to obtain multi-stage clean sand and clay concentrate slurry; finally, the sand is dewatered, and the clay slurry and the collected clay powder are flocculated and pressure-filtered to be dewatered. The separated high-quality sand is used for roadbed filling and building sand, and the clay cake is used for seepage prevention and ecological engineering. The application realizes complete recycling and high-value utilization of fully weathered granite waste, and has the advantages of high efficiency, energy saving, environmental protection and strong operability, and has significant economic, environmental and social benefits.

Disclosed herein are a process and a plant for recycling used batteries, the plant including:a first comminuting device to comminute used batteries to a first degree of comminution to obtain comminuted battery material;a drying device, arranged downstream of the first comminuting device, to dry the comminuted battery material;a second comminuting device designed to be explosion-proof and arranged downstream of the drying device, to comminute the dried battery material to a second degree of comminution, the second degree of comminution being greater than the first degree of comminution; anda pyrolysis device, arranged downstream of the second comminuting device, to pyrolyse the dried and comminuted battery material.

The application discloses a heavy medium coal separation full-process intelligent control method, which comprises the following steps: data acquisition and preprocessing of a coal separation plant; a heavy medium coal separation model is constructed to describe the dynamic characteristics of a controlled variable in a clean coal ash content control process; control loops are established respectively for heavy medium suspension density and clean coal ash content; an edge controller is developed to obtain corresponding intelligent control software; and field debugging is performed to verify the effect. The method designed in the application is based on coal separation professional knowledge and artificial intelligence means, is suitable for coal quality change and working condition fluctuation in an industrial field, and realizes the goal of heavy medium coal separation full-process intelligent control, guides actual production control, and effectively improves the intelligent level of the coal separation plant.

The application discloses a recycled aluminum sorting treatment device and method, relates to the technical field of recycling of renewable resources, and aims to solve the problem of designing a more efficient, stable and intelligent recycled aluminum crushing and sorting device. The application comprises a self-adaptive feeding identification unit which is used for identifying and distinguishing light and thin materials and thick and heavy materials; a double-cavity grading crushing unit which comprises a coarse crushing cavity and a fine crushing cavity and corresponds to the light and thin materials and the thick and heavy materials respectively, wherein the light and thin materials enter the fine crushing cavity for crushing, and the thick and heavy materials enter the coarse crushing cavity for crushing; a pulsating airflow grading unit which is communicated with a discharge port of the double-cavity grading crushing unit through an angle conveyor belt; a gradient strong magnetic iron removal unit which is communicated with a discharge port of the pulsating airflow grading unit through the angle conveyor belt; and a variable-frequency eddy current sorting unit which is communicated with a discharge port of the gradient strong magnetic iron removal unit through a horizontal conveyor belt.