1606 results about "Mineral processing" patented technology

A multispectral combined method for online detection of slurry components in a mineral processing process, relating to the technical field of spectrum detection. The multispectral combined method comprises: collecting slurry samples having a gradient distribution of moisture content to serve as test samples, and using an NIR system to acquire near-infrared spectrum data of the test samples; performing spectral preprocessing on the near-infrared spectrum data, so as to reduce the interference of spectral noise on subsequent modeling, and establishing an NIR regression model for slurry moisture content; using an LIBS system to acquire plasma spectrum data of the test samples, and establishing an LIBS regression model for slurry concentration; substituting the NIR regression model for slurry moisture content into the LIBS regression model for slurry concentration, and optimizing an algorithm to realize model correction and compensation; and establishing a quantitative analysis model for slurry element content to realize LIBS and NIR multispectral combination. The multispectral combined method can effectively improve the online detection precision of slurry components in a mineral processing process and improve the accuracy of a regression model.

The invention discloses a beneficiation process intelligent optimization control method and system based on a knowledge graph, and relates to the technical field of beneficiation process control, and the method comprises the steps: collecting static attribute data and dynamic operation data, constructing a causal knowledge graph, and obtaining a causal relationship between nodes in the causal knowledge graph and an optimization target constraint; based on a causal relationship between nodes in the causal knowledge graph and optimization target constraints, screening data from a historical database to form a high-value historical data set; according to the high-value historical data set, a reward function model is constructed, a strategy function is trained, and a reinforcement learning control strategy is obtained; running the reinforcement learning control strategy, generating a control instruction, and issuing the control instruction to the target equipment to obtain dynamic optimization control; and performing real-time monitoring on the dynamic optimization control, and performing anti-fact reasoning based on a causal knowledge graph when abnormal deviation of the running state is detected to obtain an anti-fact reasoning result.

The invention provides a mineral leaching property analysis method, which belongs to the field of process mineralogy, and comprises the following steps: crushing and enriching a sample to be detected, and selecting single mineral particles to obtain target mineral particles; the preparation method comprises the following steps: coating a sample preparation grinding tool with epoxy resin glue, adding target mineral particles, and carrying out curing and grinding treatment to obtain a primary sample; cutting the primary sample, placing the grinding surface downwards and the three wear-resistant alloys at the bottom of a sample preparation grinding tool, injecting epoxy resin glue, curing to form a composite sample, accurately grinding, polishing, performing carbon spraying treatment, performing first automatic mineralogical analysis, measuring the area of a target mineral, cleaning, and performing leaching treatment to obtain a treated sample; and after solidification, accurate grinding and polishing and carbon spraying treatment, secondary automatic mineralogical analysis is carried out, the area of the residual target mineral is measured, and the leaching index of the target mineral is calculated. Reliable technical support is provided for mineral processing technology optimization and resource evaluation, and the method is particularly suitable for development of efficient leaching technologies of precious metal, rare earth and the like.

The invention provides a composite reagent system and a chalcopyrite and sphalerite collecting method, and belongs to the technical field of mineral processing. The composite reagent system comprises a histidine derived functional group collecting agent and a black agent, and the histidine derived functional group collecting agent (containing a total sulfur ester group, a sulfydryl functional group and a side chain imidazole ring) serves as a core and is compounded with the black agent according to a specific proportion to form a target combination-synergistic interaction flotation mechanism. The histidine derivative collecting agent derives high-activity functional groups under the alkaline condition, and after sulfydryl is dissociated, stable chemical bonds are formed by the dissociated sulfydryl and metal ions on the surfaces of the chalcopyrite and the zinc sulfide. The black powder serves as an auxiliary collecting agent, and the collecting capacity of fine-grain or low-activity sulfide minerals is enhanced through chemical adsorption of dithiophosphate radicals and metal ions on the surfaces of the chalcopyrite and the sphalerite. After the two components are compounded, the selective enrichment efficiency of copper-zinc minerals in the flotation process is remarkably improved.

The invention provides a laser spectrum online analyzer, and relates to the field of mineral processing. The laser spectrum online analyzer comprises a control analysis unit, a first sample chamber, a second sample chamber, a spectrum unit and a laser unit, the first sample chamber is used for accommodating a tested sample; the second sample chamber is used for accommodating a to-be-detected sample; the spectrum unit comprises a spectrograph, a first light receiving probe and a second light receiving probe; the laser unit comprises a laser light source, a reflector, a first focusing lens and a second focusing lens. The control analysis unit compares the current spectral intensity of the detected sample with the spectral intensity of the detected sample which is measured in advance, so that the change amplitude of the spectral intensity can be obtained, the spectral intensity is calibrated, and long-term on-site stable operation can be realized. In addition, the laser spectrum analyzer can also perform self-calibration on spectral line drift.

The invention relates to the technical field of mineral processing, in particular to a method for separating calcium and magnesium components of calcined dolomite based on carbon dioxide. The calcined dolomite comprises magnesium oxide and calcium oxide, and the method comprises the following steps: digesting the calcined dolomite and water to obtain a calcined dolomite suspension; carrying out bubbling treatment on the raw material gas containing carbon dioxide under a preset condition to obtain fine raw material bubbles; carrying out carbonization reaction on the fine raw material bubbles and the calcined dolomite turbid liquid to obtain a mixed turbid liquid; and carrying out solid-liquid separation on the mixed turbid liquid to respectively obtain calcium carbonate and a magnesium-containing liquid phase. According to the method, raw material gas containing carbon dioxide is subjected to bubbling treatment to obtain fine raw material bubbles, then the fine raw material bubbles and calcined dolomite turbid liquid are promoted to be subjected to gas-liquid-solid three-phase carbonization reaction, and the separation effect of calcium and magnesium components of the calcined dolomite turbid liquid can be improved under the harmless condition; the grades of the final calcium carbonate and magnesium oxide are respectively over 98 percent.

The invention relates to the technical field of mineral processing visual detection, and discloses a visual analysis system for detecting the grade of a phosphorite flotation froth layer. The system comprises an image acquisition and decomposition module, a parallel feature extraction module, a dynamic feature fusion module, a foam evolution analysis module and a grade decision output module. The system performs multi-scale decomposition on a foam image, extracts physical and semantic features in parallel, constructs a dynamic fusion network based on bidirectional mapping to perform iterative interaction, and generates a multi-modal feature descriptor. Therefore, self-organizing growth of a foam evolution graph is driven, an evolution track of a key foam primitive is positioned and tracked, a foam grade state vector is formed, and finally, a regulation and control decision is output in combination with external control parameters. According to the system, deep fusion of physical and semantic features and deep analysis of the foam dynamic evolution process are achieved, the accuracy and predictability of foam grade state sensing are improved, and an effective means is provided for accurate control over the flotation process.

The invention relates to the technical field of mineral processing data processing, in particular to a preparation method of a high-calcium fluorite and barite paragenic ore combined inhibitor, which comprises the following steps: collecting multi-source process mineralogy data output by an X-ray fluorescence spectrometer, an automatic mineral analyzer and the like, converting the multi-source process mineralogy data into a structured format, and constructing a process mineralogy database; based on historical data of a database, a random forest algorithm is adopted to train a correlation model, the correlation rule of mineral characteristics such as calcite content, fluorite particle size distribution and barite monomer dissociation degree and the inhibitor ratio is learned, and parameters of the optimization model are fed back through a flotation test. The combined inhibitor solves the problem of selective separation caused by similar surface properties through a synergistic effect of covering active sites of fluorite calcium by modified water glass, regulating active sites of barite barium by citric acid and assisting in enhancing inhibition by modified starch, and solves the problem of low efficiency of multi-source data integration through structured data processing and model closed-loop optimization; the flotation separation efficiency and the concentrate grade are improved.

The invention provides a dump leaching method for improving the leaching rate of gold ore, and belongs to the technical field of mineral processing. The method comprises the following steps: firstly, separating minerals into oversize products and undersize products; mixing sodium carboxymethyl cellulose, bentonite and ferrous sulfate to obtain a mixture, and granulating the undersize product by using the mixture as a binder; and mixing the undersize product particles with the oversize product, and carrying out cyanide-free dump leaching. According to the method, through graded granulation and heap building, the problem that heap building permeability is poor due to the fact that the gold ore contains many clay minerals is solved. In the granulation stage, ferrous hydroxide colloid generated by hydrolysis of ferrous sulfate in the binder can assist ore particle agglomeration, and particle stability is enhanced; during subsequent cyanide-free dump leaching, ferrous sulfate can be used as an auxiliary reducing agent and a catalyst in a thiourea gold leaching system to promote oxidation and dissolution of gold; meanwhile, ferrous ions can adjust the oxidation-reduction potential of a system, so that the thiourea gold leaching reaction is in a more favorable potential interval, the oxidation efficiency of thiourea is improved, invalid decomposition of thiourea is reduced, and therefore the use amount of thiourea and the use amount of agents are reduced.

The invention provides a method for measuring the object positions of gold ores above the medium fraction in heavy sand and application of the method, and belongs to the field of mineral processing.The method for measuring the object positions of the gold ores above the medium fraction in the heavy sand comprises the following steps that gold ores above the medium fraction in a heavy sand sample to be measured are selected, and the length, width and thickness of each gold ore are measured; calculating the observation volume of each gold mineral; a volume correction coefficient and color are introduced to calculate the mass of each gold mineral; and calculating the grade of the gold minerals above the medium grade. According to the method, the observed volume of the gold mineral is corrected by introducing the volume correction coefficient, so that the real volume closer to the reality is obtained, the density of the gold mineral is corrected through color formation, so that the real density closer to the reality is obtained, and the mass of the gold mineral obtained through volume and density calculation is more accurate; therefore, the calculated grade is more accurate.

The invention discloses a special grinding aid for gold ore and a preparation method thereof, and belongs to the technical field of mineral processing, the special grinding aid for gold ore comprises the following raw materials: a monomer, an initiator, a chain transfer agent and a solvent; the monomers are an unsaturated polyether monomer A and an unsaturated carboxylic acid monomer B; or a monomer C containing an ethylenically unsaturated sulfonic acid group. The preparation method comprises the following steps: putting the raw materials into a water bath kettle, and polymerizing in a separate dropwise adding manner to prepare the special grinding aid for the gold ore. The prepared grinding aid can improve the problems of particle agglomeration, low fine grinding efficiency, low gold dissociation efficiency and the like in the gold ore grinding process, the concentrated utilization of the grinding aid limited in the fields of cement, ceramics and the like is improved, the grinding energy consumption can be reduced, and the material quality can be improved.

The invention relates to the technical field of mineral processing automation, and discloses a metal dissociation degree regulation-based grinding-flotation collaborative process optimization method which comprises the following steps: acquiring multi-dimensional sensor data in a grinding-flotation production process in real time; establishing a reference prediction model offline based on historical process data; in the online operation stage, the working condition drift state of the current process system is quantified and judged online; when it is judged that significant working condition drifting occurs, a residual compensation model is constructed online; and fusing the prediction result of the reference prediction model and the prediction result of the residual compensation model to generate a final process index prediction value. And based on the final process index predicted value, solving through an optimization algorithm, and generating a cooperative control set value. According to the method, the calculation cost and the data requirement of model maintenance are greatly reduced, and the response speed and the adaptive capacity of the system to the working condition change are remarkably improved, so that the long-term stability and reliability of the collaborative optimization effect are ensured.

The utility model relates to the technical field of ore crushing, and discloses a crusher for mineral separation, which comprises a base, a crushing barrel, a blanking barrel, a shearing crushing assembly, an extruding crushing assembly, a grinding assembly and a rotary driving assembly, the crushing barrel is arranged to perform princess installation on the shearing crushing assembly, the extrusion crushing assembly and the grinding assembly, so that ores are sequentially subjected to shearing crushing, extrusion crushing and grinding, the whole process is integrally performed, repeated operation is not needed, the processing efficiency of the equipment is improved, and smoke dust is effectively reduced.

The invention relates to the technical field of process minerals, in particular to a metal mineral X-ray plate image mineral composition segmentation method based on improved yov8n, which comprises the following steps: S1, shooting a metal mineral X-ray plate image through a polarizing microscope, and accurately marking by using Label software; and S2, a small target detection layer and an SCConv module are added on the YOLOv8n, and a ContextAggregation attention mechanism is introduced at the same time, so that the detection capability and feature extraction of a small target can be enhanced. S3, performing multiple rounds of training by using an improved YOLOv8n model, adjusting a learning rate and refining training parameters, calling and outputting a trained weight file, and completing segmentation of mineral components of the metal mineral X-ray plate image; and S4, through performance comparison with other models, evaluating the model by using an average precision mean value (Map at 0.5) and an actual segmentation effect picture. The problems of common misrecognition and low average precision (Map at 0.5) during fine-particle-size mineral processing by a traditional segmentation method are effectively solved, and the Map at 0.5 of an improved model is improved by 6.75%.

The invention relates to the technical field of sewage treatment, and particularly provides a method and a system for realizing beneficiation wastewater N, N-diethyldithiocarbamate-C-N-S synergistic oxidation-reduction coupling treatment by an MABR oxygen layering process. According to the method and the system, a time sequence dissolved oxygen (DO) dynamic regulation and control strategy is innovatively developed: through periodic / pulse type switching anaerobic-hypoxia-aerobic conditions, oxygenolysis and ammonification reaction of N, N '-diethyldithiocarbamate are intensified directionally, and toxicity inhibition of intermediate products on functional bacteria is relieved. Based on the strategy, the system can accurately utilize biological membrane oxygen gradient spatial distribution in a single MABR reactor to realize a cascade reaction of sulfur oxidation-ammonification-aerobic nitrification-anoxic denitrification of ethyl sulfur nitrogen; or aiming at high-concentration diethyldithiocarbamate (gt; 50 mg / L) is coupled with a front anaerobic reactor, and ammoniation detoxification and denitrification nitrogen removal are enhanced.

The invention discloses a multi-component nano inhibitor for flotation separation of high-argillaceous copper sulphide ore and application, the nano inhibitor is a nano calcium carbonate-calcium oxide-sodium humate coating body, the nano inhibitor is applied to flotation separation of the high-argillaceous copper sulphide ore, collaborative optimization of slime inhibition and copper ore selective collection is achieved, and the flotation separation efficiency of the high-argillaceous copper sulphide ore is improved. And high-quality copper sulfide concentrate and sulfur concentrate are obtained. According to the method, the high specific surface area and the surface activity of the nano particles are utilized, under the weak alkaline environment without desliming, through the simple, convenient, economical and efficient mineral processing technology and reagent combination, efficient recovery of copper, gold and sulfur in the high-argillaceous ore is achieved, the use amount of lime is greatly reduced, and the technical problem of tailing sedimentation is solved.

The invention provides application of sodium 2, 3-dimercaptopropanesulfonate as an inhibitor in low-alkalinity copper-sulfur flotation separation, and relates to the technical field of mineral separation. When the compound serves as an inhibitor, the compound, a collecting agent and a foaming agent are prepared into a composite flotation reagent and used for low-alkalinity flotation separation of chalcopyrite and pyrite, flotation separation is conducted through the steps of one-time roughing, at least one-time scavenging and at least one-time concentration after ore grinding and grading, and copper concentrate is collected; the method can effectively solve the problems that the copper-iron separation effect is poor in the process of flotation separation of the chalcopyrite and the pyrite, the copper recovery rate is low due to addition of a large amount of lime and the like, the chalcopyrite and the pyrite can be efficiently separated under the low-alkalinity condition through the specific flotation process, and the flotation effect on the chalcopyrite is improved.

The invention relates to the technical field of mineral processing, in particular to a Bayan obo tailing ore phase reconstruction and efficient separation method which comprises the following steps: heating raw ore, and introducing hydrogen-based gas for hydrogen-based pre-reduction to obtain a reduction product; adding a modifier into the reduction product, carrying out high-temperature melting modification and heat preservation to obtain molten slag and molten iron, and separating the molten iron to obtain modified slag; cooling the modified slag under the condition of a preset cooling rate, preserving heat, and performing water quenching treatment to obtain a slag sample; and crushing and grinding the slag sample, and carrying out flotation treatment to obtain flotation perovskite containing niobium and rare earth and flotation tailings. A clean and environment-friendly hydrogen group is used as a reducing agent for pre-reduction, and the method has huge environmental benefits. The high-temperature melting state at the last stage of melting modification provides favorable conditions for ore phase reconstruction, and the ore phase reconstruction process does not need to roast or re-melt a treated object, so that high energy consumption caused by secondary heating is avoided, the process is shortened, and the energy consumption is reduced.

The invention belongs to the technical field of mineral processing, and particularly relates to a preparation method of a diatomite filter aid. The preparation method of the diatomite filter aid comprises the following steps: (1) calcining diatomite raw ore to obtain primary diatomite; (2) carrying out acid leaching treatment on the first-grade diatomite, and washing the first-grade diatomite subjected to acid leaching to obtain refined diatomite; and (3) calcining the refined diatomite in an acid atmosphere to obtain the diatomite filter aid. The diatomite filter aid has the beneficial effects that the diatomite filter aid meets the requirements of United States Pharmacopoeia and Chinese Pharmacopoeia.

The invention discloses a semi-autogenous mill crushing capacity evaluation method based on DEM simulation, and relates to the technical field of mineral processing, and the method comprises the following steps: measuring discrete element calculation required parameters of ores, steel balls and lining plate materials, and establishing a semi-autogenous mill geometric model; importing a geometric model of the semi-autogenous mill, and initializing discrete element calculation required parameters and particle processing parameters; a DEM simulation experiment is carried out, when simulation time reaches integral multiples of the step length, all particle information in a simulation system is traversed, particles meeting the judgment condition are removed, the mass of removed ore particles is obtained, new particles meeting the set condition are added, abnormal particles are processed, and the ore particles are obtained. The residual mass of the ore particles with the particle size set by the system within the simulation time and the mass of the removed ore particles at each moment are obtained, the removal rate of the ore particles at each moment in the simulation process is calculated, the crushing capacity evaluation result of the semi-autogenous mill is obtained, the evaluation calculation time is short, the accuracy is high, and the problem of small particle deposition is effectively solved.

The invention discloses a metal mine production big data intelligent analysis method and device and a medium, and relates to the technical field of intelligent mine information, and the device comprises an acquisition and modeling module, an analysis module, a prediction and optimization module and a visualization module; the data acquisition unit is provided with a vibration sensor, a temperature sensor and a geological pressure sensor, and is used for acquiring mine equipment operation parameters, mineral processing process indexes and geological environment parameters in real time to obtain multi-source data; the data preprocessing unit is used for performing timestamp alignment, missing value compensation, noise elimination and unit normalization processing on the multi-source data to obtain standardized multi-source data; the feature extraction unit adopts a multi-head Transform network, performs space-time modeling and semantic feature fusion on standardized multi-source data, and outputs a tensor embedding vector, the risk identification result is converted into an executable process adjustment strategy, the crossing from passive early warning to active optimization is realized, and the efficiency and the intelligent level are enhanced.

The invention discloses a beneficiation optimization control method and system based on a knowledge graph, and relates to the technical field of mineral processing process control, and the method comprises the steps: collecting and preprocessing beneficiation whole process data, and generating an initial multi-modal data set; space-time process elements are extracted based on the initial multi-modal data set, and an initial beneficiation optimization knowledge graph is constructed; establishing a mineral separation process topological graph, bringing process equipment material topology into a mineral separation optimization knowledge graph, and constructing an evolutionary mineral separation optimization knowledge graph; performing timestamp alignment on the initial multi-modal data set through an evolutionary beneficiation optimization knowledge graph to obtain a time axis aligned multi-modal data set; hierarchical time sequence modeling and cross-modal correlation calculation are carried out on the multi-modal data set with the aligned time axes, and multi-modal time sequence correlation features are generated; and the multi-modal time sequence correlation characteristics are input into the evolution beneficiation optimization knowledge graph for reasoning, and an optimal beneficiation control strategy is obtained.

The invention discloses a multi-element combined collecting agent and application of the multi-element combined collecting agent in low-grade lepidolite flotation, and belongs to the technical field of mineral processing. The multi-element combined collecting agent is composed of the cationic amine collecting agent, the anion accelerant and the long-chain anion collecting agent, the reaction activity of the collecting agent and the capturing behavior on mineral particles are remarkably improved in the flotation process, the foam viscosity is reduced, the fluidity is improved, and the flotation efficiency is improved. The method effectively solves the problems that foam is too stable and different silicate minerals are difficult to float and separate under the acidic condition, reduces environmental pollution and equipment corrosion, further strengthens the hydrophobic floating behavior on the surface of lepidolite, enables the grade of obtained concentrate Li2O to be high, and further realizes clean recycling of low-grade lepidolite resources.

The invention belongs to the technical field of mineral flotation, and particularly discloses a method for recovering whole-fraction iron lepidolite through combination of multi-stage magnetic separation and synergistic flotation. Comprising a matched compound collecting agent which is composed of sodium dodecenesulfonate, amino acid methyl thiohydracrylate, an amphoteric polyacrylamide polymer, carboxyethylidene diphosphonic acid and polyethylene glycol, and efficient recovery of whole-size-fraction iron lepidolite is achieved by matching with a corresponding magnetic separation-flotation combined process. The compound collecting agent generates static electricity and physical and chemical adsorption on the iron lepidolite through specific groups such as sulfonic acid groups, carboxyl groups, amino groups, acylamino groups and phosphate groups, exerts excellent selectivity and collecting functions, generates a dispersion effect and a chelating flocculation effect on micro-fine-particle iron lepidolite, and well cooperates with multi-stage magnetic separation to recover whole-particle-size iron lepidolite, so that the recovery rate of the whole-particle-size iron lepidolite is increased, and the recovery rate of the whole-particle-size iron lepidolite is increased. And the existing combined beneficiation process of the iron lepidolite is optimized, the cost and the environmental influence are reduced, and technical support is provided for sustainable development of lithium resources.

The invention discloses a step-by-step enrichment flotation method for niobium ore, and belongs to the technical field of mineral processing. The method comprises the steps that niobium ore is subjected to crushing, ore grinding and size mixing, then weak magnetic treatment is carried out to remove strong magnetic minerals, after pH adjustment is carried out on magnetic separation tailings, a siliceous mineral inhibitor, a foaming agent and a hydroximic acid metal organic complex collecting agent are added for iron-niobium bulk flotation, and obtained iron-niobium pre-enriched concentrate is subjected to reagent removal treatment; and then an amine collecting agent and an iron mineral inhibitor are adopted for iron-niobium separation flotation, and niobium concentrate is obtained. According to the method, the collecting characteristic advantages of a hydroximic acid metal organic complex collecting agent and an amine collecting agent on siliceous minerals, iron minerals and niobium minerals are combined, efficient separation of silicon, iron and niobium is achieved by conducting flotation desiliconization firstly and then conducting flotation deferrization, the conventional desiliconization and deferrization technological process is simplified, the loss rate of the niobium minerals is reduced, and the yield of the niobium minerals is increased. The resource utilization of the niobium ore is effectively realized.

The invention relates to the technical field of mineral processing, and provides a process for recovering phosphorus from vanadium titano-magnetite tailings, which comprises the following steps: S1, magnetic separation: carrying out ore grinding treatment and low intensity magnetic separation tailing discarding treatment on the vanadium titano-magnetite tailings to obtain magnetic minerals and non-magnetic minerals for later use; s2, pulp mixing is conducted, specifically, water is added into non-magnetic minerals, stirring is conducted, and ore pulp is obtained for standby application; a sodium carbonate aqueous solution is added into the ore pulp, stirring is carried out, a gangue inhibitor and water are added, stirring is carried out, a collecting agent and water are added, stirring and foam scraping are carried out, roughed concentrate and scavenging feed ore are obtained for standby application, and the gangue inhibitor is a mixture of modified water glass and sodium hexametaphosphate with the mass ratio being 1: (0.3-0.6); and S4, concentration is conducted, specifically, primary concentration, secondary concentration and third concentration are conducted on the roughed concentrate, and final phosphate concentrate is obtained. The process for recycling phosphorus from the vanadium titano-magnetite tailings has the advantages that the flotation reagent dosage is low, and the obtained phosphorus concentrate has the high phosphorus grade.

The invention belongs to the technical field of flocculant adding, and particularly relates to a flocculant adding device of a medium-large mineral separation deep-cone thickener, which comprises a mixing tank, a bottom frame is fixedly mounted at the bottom of the mixing tank, a first storage box and a second storage box are mounted on a guide rod at the top of the bottom frame, and a first pumping pump is fixedly mounted at the top of the first storage box; a second pumping pump is fixedly installed at the top of the second storage box, a feeding assembly is arranged at the bottom of the bottom frame, a driving motor is fixedly installed at the top of the mixing tank, and a driving rod is rotationally arranged in the mixing tank. According to the flocculant adding device of the medium-large mineral separation deep-cone thickener, mixed liquid can conveniently flow to different positions of the mixing tank to be mixed through the spray holes and the movable ring, so that the mixing efficiency of a flocculant is improved, when the flocculant is mixed and prepared, a driving rod rotates to drive a driving wheel to rotate, the position of the movable ring is adjusted, and the flocculant adding effect is improved. Therefore, the mixed liquid can flow to different positions to be mixed, and the mixing efficiency is improved.

The invention relates to an efficient beneficiation process for recycling iron from iron tailings, which comprises the following steps of: feeding magnetite tailing pulp into a tailing recycling machine, feeding concentrate of the recycling machine into a first-section magnetic separator, and feeding concentrate of the first-section magnetic separator into a concentration magnetic separator; directly feeding concentrate of the concentration magnetic separator into a tower mill, feeding discharged ore of the tower mill into a swirler, and returning settled sand of the swirler to the tower mill to form closed-circuit ore grinding; overflow of the cyclone is fed into a second-stage magnetic separator, second-stage magnetic separator concentrate with the grade being 38% or above is obtained, and the second-stage magnetic separator concentrate is fed into a moxa sand mill; ore discharged by the moxa sand mill is fed into a third-section magnetic separator, concentrate of the third-section magnetic separator is fed into a fourth-section magnetic separator, concentrate of the fourth-section magnetic separator is fed into an elutriator, the concentrate of the elutriator is final concentrate, and the grade reaches 66% or above; the elutriator returns to the first section, the second section, the second section, the third section and the fourth section, and tailings of the magnetic separators are converged into comprehensive tailings. By optimizing the technological process, the concentrate grade is improved by more than 2%, and meanwhile, the tailing grade is reduced by 0.3%.

A mineral processing system for mineral separation and coarse particle recovery utilizing engineered media, features a first ore size reduction circuit and a second ore size reduction circuit. The first ore size reduction circuit includes a secondary crusher with a combination of a high pressure grinding roll crusher and a screen, and is configured to receive a primary crusher feed from a primary crusher, and provide a first ore size reduction circuit feed having first crushed ore with a first orebody feed size that is less than a primary orebody feed size of the primary crusher feed and in a range of about 6-8 mm. The second ore size reduction circuit is configured to receive the first ore size reduction circuit feed and provide a second ore size reduction circuit feed having second crushed ore with a second orebody feed size less than 1 mm.

The invention relates to the technical field of solid-liquid separation in the mineral separation industry, in particular to a dense overflow solid material recycling device and process, the dense overflow solid material recycling device comprises a plurality of sedimentation tanks, height differences exist among the sedimentation tanks, and a sediment recycling mechanism is arranged in each sedimentation tank and used for collecting and conveying solid materials after sediment; a dissociation mechanism is also arranged in the sedimentation tank and is used for dissociating solid materials; and a separation mechanism is arranged on the extraction mechanism, and solid materials can be conveyed and subjected to solid-liquid separation through vibration. By arranging the sedimentation tank, the sediment recovery mechanism, the extraction mechanism and the separation mechanism, continuous operation can be achieved, and the manual cleaning cost is reduced; the extraction mechanism can realize low-energy-consumption conveying and primary solid-liquid separation, so that subsequent treatment of solid materials is facilitated; and the solid and the liquid can be further separated through the separation mechanism, and the solid can be conveniently recycled in the later period.