45results about How to "Improve flotation effect" patented technology

The invention belongs to the field of flotation, and particularly relates to a method for flotation of copper cobalt oxide ore by using magnesium-containing tailing water, the magnesium-containing tailing water is used as flotation water to carry out five-stage roughing on the copper cobalt oxide ore, the first-stage roughing is carried out under a vulcanizing agent and a xanthate-thionocarbamate collecting agent, and the second-stage roughing is carried out under the action of a flotation agent; and the second-stage roughing is carried out under the condition of containing a compound additive, a vulcanizing agent and xanthate-hydroximic acid. The third-stage roughing is carried out under the action of a vulcanizing agent and xanthate-hydroximic acid; and the fourth-section roughing process and the fifth-section roughing process are carried out under the action of a hydroximic acid collecting agent. The compound additive comprises a component A and a component B with a structure shown in a formula 1 (# imgabs0 #); the component A comprises at least one of ammonium carbonate, ammonium bicarbonate, ammonium nitrate, ammonium acetate, ammonium sulfate and ammonium chloride; and the composite collecting agent comprises a xanthate collecting agent and a hydroximic acid collecting agent. By means of the method, the problem of flotation degradation caused by magnesium-containing tailing water recycling can be solved, and the excellent flotation effect can be achieved.

The invention discloses an activation method of silicon malachite minerals and a flotation method of high-alkalinity copper oxide ore or copper cobalt oxide ore, and belongs to the technical field of ore dressing. According to the method, crystalline phase transformation and site reconstruction are carried out on the surface of the silicon malachite, so that the surface of the silicon malachite is activated to enhance the flotation separation effect of the silicon malachite, and the problem that the silicon malachite is difficult to float and recover due to high surface hydrophilicity is solved. The method for activating the silicon malachite can also be used for flotation of complex high-alkalinity copper oxide (or copper-cobalt) ore, the high-alkalinity copper oxide (or copper-cobalt) ore is treated through the positive and negative combined flotation process, and the purposes that the recovery rate of copper and cobalt in the high-alkalinity copper oxide (or copper-cobalt) ore is larger than 90%, and the removal rate of calcium and magnesium is larger than 70% can be achieved. Compared with an existing copper oxide (copper-cobalt ore) flotation process, the method has the advantages of being simple in process, high in adaptability, small in toxicity, low in cost, high in economic benefit and easy to industrially popularize and apply.

The invention relates to a preparation method and application of a collophanite flotation reagent, illegal cooking oil is used as a raw material, filtration and impurity removal are performed, the filtered illegal cooking oil is saponified to prepare fatty acid soap, and the saponified fatty acid soap is mixed with a surfactant to prepare a collophanite flotation collector. The swill-cooked dirty oil is turned into wealth, the environment is protected, the prepared flotation reagent and the surface active agent are mixed to be applied to the flotation process, the selectivity and the collecting performance of phosphorite in flotation can be obviously enhanced, efficient recovery of phosphorite is achieved, the technological process is simple and efficient, the sorting index is excellent, and good application prospects are achieved.

The invention belongs to the technical field of phosphorite beneficiation, and particularly discloses a graded flotation method of medium-low-grade silicon-calcium collophanite, which comprises the following steps: crushing collophanite, grinding and mixing to obtain phosphorite pulp, and reselecting by a spiral chute to obtain reselected concentrate and reselected tailings; the gravity concentrate is subjected to magnesium removal reverse flotation and desilicication reverse flotation in sequence, and concentrate and tailings are obtained; gravitational separation tailings are graded through grading equipment, and coarse-fraction products and fine-fraction products are obtained; carrying out desiliconization direct flotation and magnesium removal reverse flotation after grinding the coarse fraction product to obtain concentrate and tailings; thickening the fine fraction product, and sequentially carrying out magnesium removal reverse flotation and desilicication reverse flotation to obtain concentrate and tailings; and combining the concentrates to obtain the phosphate concentrate. According to the gravity separation tailings, coarse fractions which are not fully dissociated are separated out through grading equipment and a grading technology, ore grinding is conducted independently, the ore grinding efficiency can be improved, and minerals can be fully dissociated; the fine fraction in the heavy tailings is directly subjected to double reverse flotation after being thickened, and the flotation efficiency is high.

The invention provides a coal slime flotation process control autonomous adjusting system based on a multivariable coupling technology, and belongs to the field of mineral flotation. The coal slime flotation process control autonomous adjusting system based on the multivariable coupling technology comprises a feeding property detection module, a control module and a control module, wherein the feeding property detection module is used for detecting floating ore pulp flow and floating ore pulp solid concentration; the flotation equipment parameter measurement and control module is used for detecting and controlling parameters of flotation equipment; the product quality detection module is used for detecting flotation concentrate and flotation tailings; the reagent adding control module is used for detecting the flow of the flotation reagent and the proportion of the flotation reagent to the emulsified clear water; the control module is used for sending control parameters to the flotation equipment parameter measurement and control module according to the information sent by the flotation equipment parameter measurement and control module; the feeding property detection module, the flotation equipment parameter measurement and control module, the product quality detection module and the agent adding control module are all connected with the control module. The accuracy and reliability of clean coal flotation can be improved.

The utility model belongs to the field of ore dressing relates to a kind of flotation machine ore separation box, including T-shaped partition, the T-shaped partition is installed in the ore separation box, and the ore separation box is divided into two parts of feed tank and distribution tank;The T-shaped partition includes vertical plate perpendicular to the bottom surface of the ore separation box and horizontal plate parallel to the bottom surface of the ore separation box and fixed on the top of the vertical plate;The length of the vertical plate is equivalent to the length of the ore separation box, the height of the vertical plate is not more than 1 / 2 of the height of the ore separation box;The length of the horizontal plate is equivalent to the length of the ore separation box.The technical scheme of the application can delay the flow rate of ore pulp, which is beneficial to uniform ore separation and improves the flotation effect;At the same time, the ore can be ground, and the bottom plate after modification will not be impacted by the ore pulp.

The present application relates to a kind of emulsion type capsule slow-release oil sand dissociation agent and its preparation method and application, belong to oil sand pitch technical field.Dissociation agent is by the water phase flocculating agent solution of volume ratio (10~30) and the oil phase containing emulsifier mixed and formed water-in-oil emulsion;Water phase flocculating agent solution includes the flocculating agent of concentration 10~100 mg / L, and the oil phase containing emulsifier includes the emulsifier of volume concentration 1~4%.By oil outer phase, the viscosity of pitch and oil-water interfacial tension are reduced, the calcium and magnesium ion concentration in system can be reduced after slow release of flocculating agent solution, and then the adhesion between pitch and silicon surface is weakened, on the basis of reducing the dosage of flocculating agent, further improve the dissociation efficiency of pitch on sand surface.It can not change the pH of system, prevent the disadvantage that the hydrophobicity of pitch is reduced and the difficulty of pitch droplet coagulation is increased by hot lye.

The utility model discloses an efficient intelligent phosphorite flotation cell which comprises a flotation cell body, a plurality of partition plates are arranged in the flotation cell body to divide the flotation cell body into a plurality of cell bodies, a stirring device is arranged in each cell body, grooves for foam to flow out are formed in the top ends of the two sides of the flotation cell body, and a laser foam breaker is arranged at one end of each groove. The aeration holes of the air distributor are improved, bubbles are generated more sufficiently, capturing of hydrophobic mineral particles is facilitated, the flotation effect is better, and the flotation efficiency is higher. An infrared liquid level instrument installed on a phosphorite flotation tank body is in linkage with an air distributor installed at the bottom end of a flotation machine stirring paddle, the height of a foam layer is detected through infrared liquid level scanning, when the foam layer is too high, the air distributor automatically reduces the inflation amount and reduces generation of bubbles, and when the foam layer is too low, the air distributor automatically increases the inflation amount and increases generation of bubbles. And intelligentization and automation of the equipment are realized. And the laser bubbles are adopted, so that the bubbles can be broken more quickly and thoroughly, and the water consumption is also reduced.

The present invention discloses an oilfield three-phase separation process and separation system, belonging to the field of oilfield technology. The process includes the following steps: 1. Density difference separation, inputting oilfield produced liquid or oilfield sewage into a three-phase separator, under the action of density difference, oil and natural gas in the oilfield produced liquid or oilfield sewage float up, and water flows downward; 2. Gas flotation, introducing natural gas into the three-phase separator, and the natural gas floats tiny bubbles, oil droplets, and mechanical impurities during the rising process; 3. Gas phase circulation, collecting the natural gas gas phase discharged from the three-phase separator and removing carbon dioxide and hydrogen sulfide, and then using it as the input gas of step 2 for recycling. The present invention does not need to heat the oil well produced liquid or oily sewage in advance, and can be treated at room temperature. Through the invented process, the oil content of the sewage reaches the recharge standard, the pH of the water body is stabilized, and new scale is avoided while descaling, which provides convenience for subsequent water treatment.

A flotation device for producing fluorite fine powder relates to a flotation device and comprises a flotation tank (10), a cavity (34) is arranged in the flotation tank (10), a stirring mechanism is arranged in the cavity (34), a stirring driving mechanism is arranged at the top of the flotation tank (10), a foam outlet nozzle (6) with a top opening is arranged on one side of the flotation tank (10), and a foam scraping mechanism (5) is arranged at the top of the foam outlet nozzle (6). The controller is used for controlling the forward and reverse rotation motor A and the forward and reverse rotation motor B to rotate forwards and reversely according to needs; the purpose that the lower end of the scraping plate moves to the opening portion of the foam outlet nozzle along a straight line from the junction of the floating foam located on one side of the flotation tank and the ore pulp liquid, and the planar floating foam which floats on the top of the ore pulp liquid and is located between the scraping plate and the opening portion of the foam outlet nozzle is completely scraped out is achieved.

The invention relates to the technical field of beneficiation, in particular to a beneficiation method of laterite type weathered titanium placer, which comprises the following steps of: enriching titanium placer in advance by adopting a rough grinding-strong magnetic separation process, and removing a large amount of slime rich in kaolin minerals; effective recovery of coarse-grained titanium placers is realized by adopting a'multi-stage spiral chute reselection 'process; compared with a conventional spiral chute and a conventional shaking table, the fine-grained ilmenite ore in reselected tailings can be efficiently recycled through the fine grinding-flotation technology, the ilmenite ore concentrate recycling rate can be increased by 10%-15%, and the grade can be increased by 5% or above. And meanwhile, the flotation process under the alkalescence condition is beneficial to environmental protection, and sodium oleate and cetyltrimethylammonium bromide serve as the combined collecting agent so that fine-fraction titanium placer can be collected powerfully. The'strong magnetic separation-reselection-flotation 'combined process provided by the invention can realize asynchronous recovery of coarse and fine fraction titanium placers, improves the utilization rate of resources, and has a good application prospect.

The invention discloses a phosphorite flotation collecting agent and a preparation method and application thereof. The phosphorite flotation collecting agent is prepared from the following components in percentage by mass: 10-30% of vegetable oil, 1-5% of sulfuric acid, 1-5% of an alkaline compound and the balance of water. The preparation method of the phosphorite flotation collecting agent comprises the following steps that vegetable oil and water are evenly mixed according to the component proportion, then a sulfuric acid solution is added, and sulfonation reaction is conducted at the temperature of 70-120 DEG C; and after the sulfonation reaction is completed, an alkaline compound is added under the condition of 70-100 DEG C, saponification is conducted at the constant temperature, and the phosphorite flotation collecting agent is prepared. The collecting agent can be produced in a single reaction kettle in the production process, the production process is simplified, the reaction conditions are mild, and danger is reduced. When the collecting agent is used for flotation, the collecting agent does not need to be dissolved with hot water, meanwhile, foam which is good in state, stable and non-sticky can be generated, and therefore the flotation effect is optimized.

The invention discloses a beneficiation process for beneficiation and recovery of scheelite and fluorite from argillized tungsten polymetallic ore. The beneficiation process sequentially comprises the steps of magnetite removal, low-intensity magnetic separation mineral removal, sulphide ore removal through acidification, scheelite-fluorite mixed concentration and centrifugal separation to obtain scheelite concentrate and fluorite concentrate. By adopting magnetic separation and flotation operation, corrosion to equipment can be reduced, meanwhile, the grade and the recovery rate of the scheelite concentrate and the fluorite can be improved, and under the condition that the strong magnetic tailings contain 0.34% of tungsten and 25.65% of fluorite, the scheelite concentrate with the tungsten content of 17.96% and the accumulative recovery rate of 20.42% can be obtained through tests; the content of fluorite in the fluorite concentrate is 77.86%, and the accumulative recovery rate is 47.72%.

This utility model discloses a flotation cell, belonging to the field of flotation cell technology. It includes a cell body and an aeration structure. The cell body has through-slots and locking slots on its left and right sides, respectively. Bottom baffles and top baffles are respectively provided at the bottom and top of the through-slots. The aeration structure includes a connecting pipe, a movable cover, an aeration pipe, and an aeration pump. The connecting pipe is located at the bottom of the cell body, the movable cover is located at the bottom of the outer surface of the connecting pipe, the aeration pipe is located at the bottom of the movable cover, and the aeration pump is located at the end of the aeration pipe furthest from the movable cover. This flotation cell changes the size of the bubbles by altering the length of the aeration pipe extending into the movable cover, thus changing the airflow at the bottom. The combination of porous media, the aeration pipe, the movable cover, and the aeration pump simulates the effect of a flotation column foamer, achieving micro-bubbles during bottom aeration, optimizing the flotation effect, and improving the flotation recovery rate of both oxide and sulfide ores. Bottom aeration allows large mineral particles to contact the bubbles, improving their floatability.

The utility model relates to an activated bauxite ore flotation device in the technical field of ore separation equipment, which comprises a flotation machine tank body, a stirring assembly and a scraper assembly, the stirring assembly comprises a stirring impeller, a stirring rotating shaft, a hollow air pipe, a stirring motor, a motor support and a motor fan cover, and the stirring impeller is arranged at the lower end of the stirring rotating shaft; an impeller protective cover covers the periphery of the stirring impeller, an air inlet is formed in the side wall of the motor support, an air inlet is formed in the top of the motor fan cover, the stirring rotating shaft is sleeved with the hollow air pipe, and an air outlet is formed in the side wall of the impeller protective cover; the scraper blade assembly comprises a scraper blade rotating shaft, a rotating scraper blade and a scraper blade motor; a concave notch is formed in the outer side edge of each rectangular blade of the stirring impeller; a plurality of layers of damping screen plates are laid in the flotation machine tank body; and a plurality of vertical guide vanes are annularly distributed on the periphery of the impeller shield. According to the flotation device, through the structural design of the stirring impeller, the rotating load of the stirring motor is reduced; the damping net plate reduces the rising speed of the bubbles, and the formed bubbles are finer and more uniform.

The utility model relates to a system for ensuring the cleanness of light sources of a flotation tailing collecting device and dispersing an oil film on the surface of ore pulp, which aims at solving the technical problem that the conventional flotation tailing image collection is greatly influenced by light reflection and the oil film, and adopts the technical scheme that the system comprises two light sources, a blowing mechanism and an image collecting device, the image acquisition device is a camera which is arranged right above the ore pulp liquid level, and a camera lens downwards faces the ore pulp liquid level; the light sources are arranged on the two sides above the liquid level and obliquely irradiate the liquid level, and the included angle between light rays and the liquid level is beta; the air blowing mechanism comprises an air blower and an air blower support, the air blower is of a double-nozzle structure and is fixedly arranged on the ground beside the flotation tailing pool through the air blower support, a double-nozzle device is arranged on an air outlet of the air blower, one double-nozzle device faces the light source, and the other double-nozzle device horizontally faces the ore pulp liquid level. According to the utility model, the soft light source and the air blowing device are combined together, light rays uniformly irradiate the water surface, light spots and light reflection caused by an oil film are reduced, and the shooting effect and quality of the camera are improved.

The present invention provides a flotation collector for refractory gold ore and its preparation method and application. The flotation collector includes 25 to 30 parts of N-phenyl-2-mercaptobenzimidazole, 15 to 20 parts of phenol black medicine, 7.5 to 9 parts of surfactant, 3 to 4 parts of emulsifier, 1 to 2 parts of alkali, 1 to 2 parts of defoamer, 2 to 3 parts of foaming agent and 70 to 80 parts of water by weight. The preparation method of preparing solution I and solution II separately and then fully mixing the two solutions can effectively play the synergistic effect between the reagents to obtain a collector with stable foam, strong collection effect and selectivity. When the flotation collector of the present invention is applied to gold ore flotation, it effectively improves the recovery rate and grade of fine-grained and micro-particle gold ore dressing, especially the roughing pre-enrichment of low-grade, easy-floating and easy-mud gold ore and the adjustment and optimization effect of flotation environment are remarkable; it also has the characteristics of small dosage of reagents, remarkable flotation effect, safety and environmental protection, and high market promotion value.

The utility model relates to the technical field of coal slime detection, in particular to a coal slime water real-time coarse particle running detection device based on multi-frequency excitation, which comprises a material receiving funnel for containing and filtering coal particles, and a dissociation assembly capable of pushing an ultrasonic dissociation machine upwards to enable the coal particles in the material receiving funnel to be immersed in dissociation liquid is arranged at the bottom of the material receiving funnel; a cleaning assembly capable of extending into the material receiving funnel and stirring and brushing dissociated coal particles is arranged above the material receiving funnel; and an identification assembly for identifying the granularity of dissociated coal particles is also arranged beside the material receiving funnel. The coal particle size identification device effectively improves the accuracy of coal particle size identification.

The invention discloses a zero-tailing phosphate ore pretreatment process which comprises the following steps: identifying basic properties of phosphate ore, sorting phosphate ore including phosphate tailings and phosphate concentrate, and preparing a sintered wall material from the phosphate tailings; the phosphate ore is sedimentary mudstone. Based on performance identification of the phosphate ore, the phosphate ore is pretreated to sort out the phosphate tailings and the phosphate concentrate, the special rapid desliming device and the flotation reagent are designed for the phosphate ore, the sorting effect is guaranteed, the phosphate tailings are used for sintering the wall material, the phosphate ore pretreatment process and the building material production process are effectively considered, and the production efficiency is improved. The method realizes enrichment of phosphate concentrate and utilization of phosphate tailings, further realizes zero tailings, simple process, low consumption and environmental protection, eliminates potential threats to the environment and human health caused by a large amount of heavy metal elements and chemical substances contained in the phosphate tailings, and is suitable for the field of phosphate ores, especially collophanite.

The invention relates to the technical field of mineral flotation, in particular to a flotation collecting agent for scheelite and a preparation method of the flotation collecting agent. The flotation collecting agent for scheelite comprises the following components in parts by weight: 40-60 parts of a compound A, 10-20 parts of sodium oleate, 5-8 parts of thiadiacid and 1-5 parts of an emulsifier. The flotation collecting agent for scheelite can improve the concentrate yield, grade and recovery rate.

This utility model discloses an apparatus for improving the flotation of coarse-grained minerals, comprising a tank body with a feed inlet at the top. A fixed column is fixedly connected to the top wall inside the tank body, and a flow guiding component is rotatably connected to the fixed column. A filter port is provided on one side of the tank body, and a filter screen is fixed to the filter port. A collection cylinder is connected to the filter port, and the collection cylinder is connected to the input end of a peristaltic pump through a pipe. A pressure chamber is provided at the bottom of the tank body, and the output end of the peristaltic pump is connected to the pressure chamber through a pipe. An upward flow distribution plate is fixedly connected inside the tank body below the flow guiding component, and the upward flow distribution plate has evenly distributed flow-dividing holes. The inverted conical rotating platform and inclined flow guiding plate design of the flow guiding component of this utility model can rotate and disperse the slurry under the impact of the mineral slurry, so that the minerals have more sufficient contact with air bubbles and flotation reagents; the upward flow distribution plate evenly divides and pressurizes the rising liquid, enhancing the uniformity of liquid mixing inside the tank; the synergistic effect of multiple links significantly improves the flotation efficiency and effect of coarse-grained minerals.

The embodiment of the present application discloses a kind of flotation column including column, distributor, bubble generator and mixer, during use, slurry is supplied into column by feed inlet, then bubble generator is opened, bubble is output via distributor, open mixer, mixer can form gas-liquid mixed medium, then mixed medium is output via distributor, bubble is contacted with mineral in slurry, hydrophobic mineral in slurry can be captured by bubble and discharged via concentrate outlet, and hydrophilic mineral will not be captured by bubble and discharged via tailings outlet, and based on this, the separation of useful mineral and gangue mineral can be completed.The flotation column provided by the embodiment of the present application, the distributor includes a base and a plurality of nozzles, one end of the plurality of nozzles is connected to the base, and the plurality of nozzles are inclinedly arranged in the height and width directions relative to the base, which can improve the flotation efficiency, the rotating flow field can pre-removal coarse gangue, reduce the phenomenon of gangue overgrinding, reduce energy consumption and reduce the problem of concentrate pollution.

This invention relates to a method for preparing a flotation collector, a flotation collector, and a flotation method for oxidized minerals, belonging to the field of mineral processing technology. It solves the problems of low flotation recovery rates, high temperature dependence, high energy consumption, and environmental pollution associated with existing collectors for oxidized minerals. The flotation collector prepared by the method described above has high polarity, significantly enhancing the adsorption between it and functional groups on the mineral surface, thus improving the mineral flotation recovery rate. Under low-temperature conditions, it exhibits good water solubility and dispersibility, contributing to improved mineral recovery rates at low temperatures. Combined with the appropriate carbon chain length of the collector molecule, flotation can be achieved over a wide flotation temperature range, reducing the impact of temperature on mineral flotation and achieving energy saving and carbon reduction in the flotation method. Furthermore, the collector molecule contains two carboxyl groups, readily chelating with metal cations to achieve selective collection of metal ions, making it suitable for flotation under various water quality conditions.

The invention relates to tin recovery, and discloses a method for recovering tin in high-mud multi-metal tailings, which comprises the following steps: 1) grinding the high-mud multi-metal tailings, 2) carrying out impurity removal flotation, and 3) obtaining a mixed solution; 4) tin recovery: adding ammonia water into the mixed solution to adjust the pH value to 5.0, carrying out solid-liquid separation after the reaction is finished, and filtering to obtain a zinc-lead-containing filtrate and a precipitate; and washing the precipitate with hot water to obtain a tin hydroxide product. By means of the method, interference of impurities on tin recovery is reduced, an excellent foundation is laid for tin recovery, the good environment-friendly advantage is achieved, efficient enrichment of tin is achieved, the technological process is simple, and efficiency is greatly improved.

The invention discloses a cassiterite collecting agent and a preparation method and application thereof, and belongs to the technical field of mineral separation. The cassiterite collecting agent is formed by coordinating and assembling the following cinnamon hydroxamic acid ligands and metal ions with the valence of more than two: # imgabs0 #, wherein M is a monovalent cation; in the formula, R is alkoxy with 1 to 5 carbon atoms or alkyl with 1 to 5 carbon atoms. The cassiterite collecting agent has very high targeted adsorption capacity on the cassiterite surface, meanwhile has excellent hydrophobic performance, particularly can achieve selective separation of cassiterite and gangue minerals such as tourmaline and garnet and enhanced flotation recovery of fine-fraction cassiterite under the condition of very low dosage, and is low in preparation cost, good in performance, simple in process and suitable for industrial production. The method is of great significance in improving efficient comprehensive recovery of cassiterite resources and is beneficial to further popularization and application.

The invention discloses a high-recovery-rate and high-grade sulfur concentrate production process. The invention discloses a high-recovery-rate and high-grade sulfur concentrate production process. The process comprises the following steps: S1, crushing raw ore to 200 meshes or below; s2, water is added into the crushed ore for pulp mixing, the pH value of ore pulp is adjusted, and soaking and stirring are conducted; s3, firstly adding an inhibitor and a regulator into the stirred ore pulp, uniformly stirring, then adding concentrated sulfuric acid, xanthate and 2 # oil, carrying out primary roughing to obtain roughing concentrate I and roughing middling I, adding xanthate into the roughing middling I, carrying out secondary roughing to obtain roughing concentrate I and roughing tailings, and carrying out secondary roughing to obtain roughing concentrate II and roughing tailings; the roughing concentrate I and the roughing concentrate I are combined for multiple times of concentration to obtain sulfur concentrate, concentrated sulfuric acid, xanthate and 2 # oil are added into roughing tailings for first scavenging to obtain scavenged tailings I and scavenged middlings I, the scavenged middlings I are subjected to second scavenging to obtain scavenged tailings I, and the scavenged tailings I are tailing mortar. The high-quality sulfur concentrate with the grade reaching 48% or above is obtained through the sulfur concentrate production technology.

The present application relates to the field of mineral processing engineering and metallurgical beneficiation technology, and discloses a method for comprehensively recovering iron and tin from tin-containing iron concentrate, which comprises the following steps: S1, finely grinding and grading the tin-containing iron concentrate to obtain coarse-grained low-tin iron concentrate and fine-grained high-tin iron concentrate; S2, dry low-intensity magnetic separation is performed on the fine-grained high-tin iron concentrate after drying to obtain low-intensity magnetic separation concentrate and tailings; S3, the low-intensity magnetic separation concentrate is subjected to reduction roasting with H2 / CO composite gas to convert tin into gaseous volatile, and high-tin fume dust is obtained by cooling and collecting, and the roasting sand is low-tin iron concentrate; and S4, the low-intensity magnetic separation tailings are subjected to micro-bubble flotation after being pretreated with lead ion activated macromolecular flocculant to obtain cassiterite concentrate. Through the combined process of grading pre-concentration, dry low-intensity magnetic separation, low-temperature reduction roasting and flocculation flotation, the present application realizes deep tin removal of iron concentrate and efficient comprehensive recovery of iron and tin, and has the advantages of low energy consumption, good separation effect and green environmental protection.

The utility model relates to a gold ore flotation middling regrinding and reselecting treatment system which comprises a classificator III, a scavenging machine I and a scavenging machine II, discharging ports of the classificator III, the scavenging machine I and the scavenging machine II are connected with a feeding port of a slag slurry pool, a discharging port of the slag slurry pool is connected with a feeding port of a hydrocyclone through a slag slurry pump, and a discharging port of the hydrocyclone is connected with a discharging port of a water pump. A sand setting opening of the hydrocyclone is connected with the feeding end of the vertical mill, the discharging end of the vertical mill is connected with a feeding opening of the slurry pool, an overflow opening of the hydrocyclone is connected with a feeding opening of the inclined plate thickener, and a discharging opening of the inclined plate thickener is connected with a feeding opening of the stirring barrel through the conveying pump. A discharging port of the stirring barrel is connected with a feeding port of a middling regrinding roughing machine, and a discharging port of the middling regrinding roughing machine is connected with a middling regrinding scavenging machine. According to the gold ore flotation middling regrinding and reselecting treatment system, through middling regrinding, roughing and scavenging, the problems that gold ore monomers are insufficiently dissolved, and the recovery rate is low are solved.

The invention discloses a superconducting magnetic separation-flotation combined beneficiation method for ultra-low-grade copper ore, which comprises the following steps: firstly, crushing the ultra-low-grade copper ore, carrying out first-stage ore grinding, then, carrying out weak magnetic iron removal, superconducting magnetic separation roughing and scavenging tailing discarding, then, carrying out second-stage ore grinding on first-stage pre-selected concentrate, and then, carrying out weak magnetic iron removal, superconducting magnetic separation roughing and scavenging tailing discarding. And finally, the second-section pre-selected concentrate is subjected to flotation to obtain final copper concentrate, wherein the flotation process structure is one-time roughing, three-time concentration and two-time scavenging. The highest magnetic field intensity of superconducting magnetic separation can reach 5T, the copper grade of the tailings can be greatly reduced, the copper metal recovery rate is improved, and the tailings discarding amount is large; the sodium silicate and the sodium hexametaphosphate are combined to be used as inhibitors of siliceous and magnesian gangue, and meanwhile, the sodium silicate and the sodium hexametaphosphate are also slurry dispersing agents and have a positive effect on improving the concentrate grade; the copper sulfide collecting agent Z200 and the copper oxide chelating collecting agent B130 are used in a combined mode, the synergistic effect of the agents is achieved, and the copper recovery rate is effectively increased.

The invention belongs to the field of flotation, and particularly relates to a combined collecting agent, a flotation reagent and a flotation method for scheelite flotation. The combined collecting agent comprises a component A and a component B, the component A comprises a compound # imgabs 0 # with a structure shown in a formula 1; the component B comprises a compound with a structure shown in a formula 2 # imgabs 1 #; in the combined collecting agent, the weight content of the component A is larger than or equal to 40%. According to the method, the scheelite concentrate with the high WO3 grade can be obtained through one-time concentration, the WO3 enrichment ratio exceeds 10, and the flotation recovery rate is high. The combined collecting agent is simple in component and environmentally friendly, the loss rate of scheelite in flotation tailings is low, and efficient flotation of the scheelite and flotation separation between the scheelite and calcium-containing gangue minerals can be achieved.