180 results about "Reverse flotation" patented technology

The invention provides a method for quality-divided regeneration of silicon dioxide from ardealite by using a flotation and acid leaching coupling melting purification technology, and relates to the technical field of regeneration of silicon dioxide from ardealite, the method comprises the following steps: S1, adding a nonionic collecting agent into ardealite ore pulp for reverse flotation to obtain rough machining ardealite; s2, carrying out direct flotation on the rough machining ardealite obtained in the step S1 to obtain silicon ardealite tailings; s3, drying and crushing the silicon phosphogypsum tailings, uniformly mixing the silicon phosphogypsum tailings with a washing agent, and acidizing to remove impurities, so as to obtain silicate; and S4, adding the silicate obtained in the step S3 into a dissolving agent, reacting to obtain silicon dioxide colloid, and calcining to obtain silicon dioxide with the purity as high as 99.9%.

The invention discloses a method for preparing high-purity quartz sand through reverse flotation, which comprises the following steps: S1, ore pretreatment: pretreating raw ore to obtain quartz sand; the quartz sand obtained in the first step is placed in a flotation tank, the mass concentration of ore pulp is adjusted to be 30%-60%, an adjusting agent is added into the ore pulp, the pH value of the ore pulp is adjusted to be 2-4, then an inhibitor is added, stirring is conducted for 3-5 min, a collecting agent continues to be added, stirring is conducted for 10-20 min, finally a foaming agent is added, air is introduced, reverse flotation is conducted, stirring, foam scraping and washing are conducted, and quartz sand concentrate is obtained; the inhibitor is modified starch with the particle size being smaller than 500 nm and the substitution degree being 0.1-1.0, the dosage is 50-250 g / t, and carboxyl and aldehyde groups are introduced into the modified starch; quartz sand concentrate obtained after flotation is subjected to secondary acid leaching and high-temperature chlorination to obtain high-purity quartz sand, modified starch serves as an inhibitor, meanwhile, hydroxyl (-OH) in starch molecules and the surface of quartz form hydrogen bonds, the surface of the quartz is covered, adsorption of a collecting agent to the quartz is hindered, and quartz loss is reduced.

The invention discloses a fluoride-free strong-acid-free reverse flotation method for extracting a high-purity quartz sand flotation product from granite pegmatite, and belongs to the technical field of mineral flotation. The method comprises the following steps: carrying out graded crushing and ore grinding on granite pegmatite to obtain slurry to be treated; carrying out wet magnetic separation on the to-be-treated slurry to obtain ore pulp after magnetic separation and magnetic-containing minerals; the pH value of the ore pulp is not adjusted, reverse flotation is carried out in the presence of a quartz mixed inhibitor, and a feldspar product and a quartz product are obtained; the quartz mixed inhibitor is a combination of a component A and a component B, wherein the component A is selected from at least one of sodium metasilicate, sodium tripolyphosphate, sodium hexametaphosphate, carboxymethyl cellulose and salinized water glass; the component B is selected from at least one of guar gum, Arabic gum, sodium humate and citric acid. The method is free of fluorine and strong acid, green and efficient, and is a method for preparing high-purity quartz sand from pegmatite with high industrial application feasibility.

The application discloses a method for separating aluminosilicate minerals and purifying quartz sand under neutral conditions and application thereof. The method for separating aluminosilicate minerals and purifying quartz sand under neutral conditions adopts one or more times of reverse flotation operations, and the reverse flotation operation comprises the following steps: adding a quartz depressor into quartz raw sand slurry or low-aluminum-content fine quartz sand slurry obtained through previous reverse flotation operation and mixing; then adding an aluminosilicate mineral collector and mixing; subsequently, adding a foaming agent under the condition of air agitation and stirring, and performing quartz reverse flotation, during which, stirring is kept and bubbles are scraped; and finally, washing the remaining slurry to obtain low-aluminum-content fine quartz sand. The reverse flotation process of the application is performed under neutral conditions, avoids the use of traditional strong acid and strong alkali, and further reduces the harm of the purification process to production equipment, ecological environment and operating personnel.

The application belongs to the technical field of battery recycling, and discloses a flotation depressant, a preparation method and application thereof. The flotation depressant comprises catechol, an oxidizing agent and a weak acid buffer solution, and the pH value of the flotation depressant is 4-6.5. The catechol and the oxidizing agent are dissolved in the weak acid buffer solution to prepare the flotation depressant, the flotation depressant can selectively inhibit the flotation of the positive electrode material, and thus the positive electrode material and the negative electrode material are separated through reverse flotation. The flotation depressant is used for flotation to obtain the positive electrode material rich in cobalt, and the grade and the recovery rate of the positive electrode material are as high as 90% and 83% respectively. The preparation method of the flotation depressant is simple, the cost is low, the flotation depressant is friendly to the environment, and the flotation depressant has a good application prospect in industrial battery recycling.

The invention provides a flotation method for separating residual slope product titanium placer, and belongs to the field of beneficiation, the flotation method comprises the following steps: grinding a titanium placer flotation raw material until the titanium placer flotation raw material accounts for 60-70% by mass of-0.074 mm, preparing the titanium placer flotation raw material into ore pulp with the concentration of 25-30%, adding a gangue collecting agent for reverse flotation roughing, and separating to obtain a foam product and an in-tank product; a gangue inhibitor and an ilmenite collecting agent are added into a product in the groove for direct flotation roughing, and roughing rough concentrate and roughing tailings are obtained; the roughing rough concentrate is subjected to three times of concentration to obtain titanium concentrate; a gangue inhibitor and an ilmenite collecting agent are added into the roughing tailings for scavenging, and scavenged concentrate and scavenged tailings are obtained; and the foam product and the scavenging tailings are combined, and tailings are obtained. The reverse flotation desliming process is adopted, it is guaranteed that gangue minerals with good floatability in an ore sample are removed as far as possible, the adverse effect of the gangue minerals on ilmenite flotation is reduced, recycling of fine-fraction ilmenite is effectively enhanced, and the TiO2 recycling rate is increased under the action of the efficient inhibitor and the collecting agent.

The application discloses a method for removing magnesium from phosphate ore by reverse flotation and application, and comprises the following steps: S1, crushing, screening, grading and grinding calcium-magnesium-containing phosphate ore to obtain phosphate ore powder; S2, adding water to the phosphate ore powder to adjust the slurry, and then adjusting the pH value to 4.5-9.0 to obtain a mineral slurry; S3, adding an inhibitor solution and a collector solution into the mineral slurry in sequence, and performing flotation to remove impurities to obtain tailings and phosphate concentrate; the inhibitor solution is a fulvic acid and / or fulvic acid salt solution; the application has the advantages of no phosphorus, no pollution, small dosage, mild applicable pH range, no corrosion damage to the flotation equipment and the like by using the inhibitor fulvic acid or the salt thereof to perform the flotation, and the removal of impurities of the calcium-magnesium-containing phosphate ore can be realized only by using the short process of the reverse flotation, and the flotation and impurity removal effect is good.

The invention relates to a combined inhibitor for reverse flotation magnesium removal of medium-low grade phosphorite and application thereof. The combined inhibitor comprises sodium sulfate, 1, 2, 4-butanetricarboxylic acid and sulfuric acid. The application method comprises the following steps: grinding raw ore, adding water and mixing to obtain ore pulp; the pH of the ore pulp is adjusted, then the combined inhibitor is sequentially added and mixed, then a collecting agent is added and mixed, flotation is conducted, and phosphate concentrate and phosphate tailings are obtained; the flotation process comprises one-time rough flotation, at least one-time fine flotation and at least one-time scavenging; the combined inhibitor provided by the invention is good in calcium and magnesium interference resistance and high in selectivity, the dosage of sulfuric acid is remarkably reduced, the pH value of ore pulp is increased, magnesian gangue in phosphorite is effectively removed through the synergistic effect of all the components, the grade of phosphate concentrate is increased, meanwhile, the recovery rate is high, and the combined inhibitor has good industrial application prospects.

The present invention relates to a combined inhibitor for lead-zinc oxide ore in lead-zinc sulfide tailings and its application, belonging to the technical field of lead-zinc oxide ore beneficiation. The combined inhibitor comprises sodium fluorosilicate, sodium sulfide, and sodium humate, wherein the mass ratio of the sodium fluorosilicate, sodium sulfide, and sodium humate is 2:5:1. The present invention also includes applying the combined inhibitor to a reverse flotation recovery process for lead-zinc oxide ore in lead-zinc sulfide tailings. The combined inhibitor and reverse flotation process employed in the present invention achieve simultaneous recovery of lead oxide and zinc oxide while ensuring flotation recovery efficiency, and have the advantages of a simple process and low equipment investment.

The present application relates to the technical field of mineral processing, and in particular, relates to a method for recovering electrically fused zirconia cyclone dust and application thereof. The method for recovering electrically fused zirconia cyclone dust comprises the following steps: mixing electrically fused zirconia cyclone dust with water to form a slurry, and then performing gravity separation roughing to obtain gravity separation roughing concentrate and gravity separation roughing tailings; performing gravity separation scavenging on the gravity separation roughing tailings to obtain gravity separation scavenging concentrate; mixing the gravity separation scavenging concentrate and the gravity separation roughing concentrate, and then performing screening to obtain oversize and undersize; performing gravity separation cleaning on the oversize to obtain gravity separation cleaning concentrate and gravity separation cleaning tailings; mixing the undersize with a collector solution and a foaming agent, and then performing reverse flotation roughing to obtain reverse flotation roughing concentrate and reverse flotation roughing tailings; and mixing the reverse flotation roughing concentrate and the gravity separation cleaning concentrate to obtain zircon concentrate. The method can efficiently recover zircon concentrate, and improve the economic added value of electrically fused zirconia cyclone dust waste.

The invention provides a novel ardealite double-reverse flotation purification system and process, and the system comprises a size mixing tank which is used for mixing ardealite slurry; the first dosing container is communicated with the downstream of the size mixing tank; the first reverse flotation column is communicated with the downstream of the first dosing container, and a first outer guide hopper is arranged outside the top end of the first reverse flotation column and used for guiding materials overflowing from the top of the first reverse flotation column outwards; the second dosing container is communicated with the downstream of the first reverse flotation column; the second reverse flotation column is communicated with the downstream of the second dosing container, and a second outer guide hopper is arranged outside the top end of the second reverse flotation column and used for guiding materials overflowing from the top of the second reverse flotation column outwards; and the first filter press is communicated with the downstream of the second reverse flotation column and is used for carrying out filter pressing on materials at the bottom of the second reverse flotation column.

This invention discloses a low-temperature reverse flotation collector for collophane and its preparation method, belonging to the field of collophane flotation technology. The low-temperature reverse flotation collector for collophane of this invention is prepared from the following raw materials: linoleic acid, linolenic acid, and gallic acid. This invention generates a low-temperature reverse flotation collector for collophane containing two OH groups and one COOH group through an esterification reaction of linoleic acid, linolenic acid, and gallic acid. In acidic pulp, the flotation recovery rate is 20-50% lower than before the esterification reaction, and the dosage is significantly improved, resulting in a substantial increase in concentrate P2O5 grade and recovery rate. Furthermore, the low-temperature reverse flotation collector for collophane can be used for flotation at a low temperature of 5-10℃. The flotation foam generated during the flotation process has a short duration, low foam stability, and is easily defoamed, which is beneficial for continuous operation and tailings recovery.

The invention discloses equipment and a method for producing a potassium chloride reverse flotation reagent by adopting a granular copper-nickel catalyst, and relates to the technical field of salt lake chemical engineering. The equipment comprises a reaction kettle, a stirring shaft, a stirring paddle, a stirring basket, an upper stirring paddle, a lower stirring paddle and the like; on the basis of a powder catalyst, macroporous pseudo-boehmite and an acid solution are added, the powder catalyst is prepared into particles, and the particle type catalyst is matched with special production equipment to be used for producing the potassium chloride reverse flotation reagent. Compared with the prior art, the invention has the beneficial effects that the granular catalyst is combined with the special production equipment provided by the invention, the technical effect equivalent to the activity of a powder catalyst can be realized, the content of the target product is 85% or above, the highest content reaches 93.07%, the content of copper and nickel in the product is 10 ppm or below, the harm to salt pan brine is greatly reduced, and the production cost is reduced. The problem that flotation reagents and catalysts are difficult to separate which puzzles enterprises for many years is solved.

The invention provides a preparation method of an amphoteric collecting agent and application of the amphoteric collecting agent in direct and reverse flotation of medium-low-grade phosphorite, and belongs to the technical field of mineral processing engineering. According to the amphoteric collecting agent, R can regulate and control hydrophobic chains, hydrophobic adsorption energy and molecular dispersity are optimally balanced, then the surface activity and dispersity of the amphoteric collecting agent are improved, and efficient dispersion at the temperature of 25 DEG C is achieved; the quaternary ammonium salt structure has the advantages that the cation characteristic of the quaternary ammonium salt structure is kept stable in the whole pH range and is not influenced by the environmental pH, so that a foundation is provided for effectively playing a cation collecting role in two distinct pH environments of direct flotation and reverse flotation; the problem that a traditional amine collecting agent loses positive charges under the alkaline condition and loses efficacy is solved.

A method for desilication of magnesite flotation by using a collector SAA belongs to the technical field of magnesite beneficiation and purification process, and steps are as follows: high-silicon low-grade magnesite is crushed, and ball-milled to obtain magnesite powder; at room temperature, the magnesite powder is placed in a flotation device, and deionized water is added to carry out slurry preparation; then, HCl solution is added to adjust the pH value, and stirring is carried out to obtain magnesite slurry; the collector SAA is added to the magnesite slurry, and stirring is uniformly carried out, and then one-roughing one-cleaning one-scavenging reverse flotation purification is carried out to obtain low-silicon magnesite concentrate. The application of a new collector SAA is developed, because the collector SAA has strong selective collecting property for silicon-containing minerals, the desilication process is shortened and simplified, the flotation process operation is more stable, the operation is more simple, and the collector SAA has more environmental protection compared with other chemical collectors. The ore treated by the method has low grade, and the content of SiO2 in the crude ore is high; the obtained magnesite concentrate can reach the special-grade standard of metallurgical industry.

The invention discloses a fluoride-free and acid-free method for recycling high-grade quartz from sulfide tailings, and belongs to the technical field of comprehensive utilization of mineral resources. According to the method, through the technical route of directional grading pretreatment and fluoride-free and acid-free collaborative reverse flotation separation, the separation problem of quartz and gangue minerals in the sulfide tailings is effectively solved, the quartz concentrate with the SiO2 grade larger than or equal to 90% is obtained, the cost of a beneficiation reagent per unit quartz concentrate is smaller than 50 yuan / ton, and the standard requirements of the glass and ceramic industry are met. The method not only improves the quartz recovery rate, but also effectively avoids fluoride and acid wastewater pollution in the traditional process, has good environmental protection property and economical efficiency, is suitable for large-scale industrial production, and provides a new technical solution for resource utilization of the sulfide tailings.

This invention discloses a combined collector for low-temperature iron ore flotation desilication and its application, belonging to the field of iron ore flotation technology. The combined collector of this invention is an anionic combined collector, composed of three components: component 1 is sodium oleate, component 2 is sodium linoleate, and component 3 is sodium decanoate. Components 1, 2, and 3 are each prepared into 5% (w / w) aqueous solutions. The ratio of the aqueous solutions of components 1, 2, and 3 is adjusted and mixed evenly to obtain the combined collector for low-temperature iron ore flotation desilication. This combined collector is used for reverse flotation desilication of difficult-to-process iron ores under low-temperature conditions (10℃-15℃). This combined collector overcomes the shortcomings of traditional anionic collectors, which have poor collection ability under low-temperature conditions. It reduces the pulp temperature required for reverse flotation desilication of iron ore (no heating required), effectively reducing the energy consumption of the concentrator. Furthermore, the components of the combined collector are widely available, commercially accessible, and low in cost, which is conducive to industrial-scale promotion and application.

The application is a beneficiation method for removing iron and aluminum sesquioxide from high-grade collophanite, and belongs to the technical field of mineral processing. The material obtained by crushing, superfine grinding and grading of raw ore is fed into a heavy separation operation to obtain a heavy separation concentrate and a heavy separation tailing; the heavy separation concentrate is fed into a reverse flotation magnesium removal operation buffer tank, and the heavy separation tailing is thickened, re-ground, classified, and then subjected to positive flotation desliming and positive flotation desilication, and the obtained concentrate is fed into the reverse flotation magnesium removal operation; three backwater pools are built to store positive flotation desilication backwater, reverse flotation magnesium removal backwater and heavy separation operation backwater respectively. The method mainly aims at high-grade high-sesquioxide calcareous collophanite, adopts heavy and float combined separation, divides the raw ore into a heavy separation concentrate and a heavy separation tailing through a heavy separation device, and subjects the heavy separation tailing to positive and reverse flotation to obtain a heavy tailing flotation concentrate. The separation process fully utilizes the advantages of positive and reverse flotation and heavy separation, the process flow is stable, the separation effect is good, high-quality phosphorus concentrate is realized, and low-quality phosphorus concentrate can be used.

The invention discloses a combined activating agent suitable for phosphorite reverse flotation and application of the combined activating agent, and belongs to the technical field of phosphorite flotation. The combined activating agent comprises acid red 27 and propionic acid, the combined activating agent can generate a strong activation effect on dolomite within the pH range of 3-7, meanwhile, apatite flotation is not promoted, and therefore flotation separation of dolomite and apatite is achieved. The mass percent of the acid red 27 in the combined activating agent is 30%-60%, the dosage of the combined activating agent is 500-1000g / t, the reaction time of the combined activating agent and phosphorite pulp is 3-15 minutes, after the combined activating agent is activated, a hydroximic acid and butanol mixed collecting agent is used for flotation, meanwhile, a No.2 oil foaming agent is added, and the flotation time is 3-15 minutes. Phosphorus concentrate with the P2O5 grade of 27.81%-28.75% and the recovery rate of 85.33%-90.18% can be obtained through the reverse flotation closed-loop process of one-time roughing and one-time concentration.

The present invention relates to a method for producing a low-temperature reverse flotation inhibitor for iron ore. The method comprises the following steps: first, reacting a mixture of the following components by weight at 50°C to 60°C for 6h to 8h to obtain an auxiliary agent (1): 100 parts of corn starch and cassava starch, 0.1 to 0.3 parts of hydrogen peroxide, 0.05 to 0.15 parts of ferrous sulfate, and 3 to 5 parts of acrylonitrile; second, reacting a mixture of the following components by weight at 45°C to 55°C for 3 to 4h to obtain an auxiliary agent (2): 100 parts of the auxiliary agent (1) obtained in the first step, 3 to 8 parts of propylene oxide, and 0.1 to 0.8 parts of sodium ethoxide; and third, reacting a mixture of the following components by weight at 40°C to 50°C for 2 to 3h to obtain a finished inhibitor: 100 parts of the auxiliary agent (2) obtained in the second step and 1 to 3 parts of ammonium persulfate. The inhibitor has strong inhibitory ability, selectivity, and low-temperature adaptability and can be used for room-temperature flotation.

The invention discloses a preparation method and application of a fluorine-sulfur synchronous removal collector in a magnetite concentrate, wherein step 1 selects 50 80 parts of oleic acid, 10 20 parts of benzohydroxamic acid, and 0 10 parts of lauric acid, and the formed mixture is added to a reaction vessel to carry out saponification reaction; step 2, the saponified product obtained in step 1 is stirred and mixed with xanthate and black medicine to obtain a final collector, which is used for reverse flotation desulfurization and defluorination of magnetite concentrate. The present invention provides a method for preparing a flotation collector for synchronous desulfurization and defluorination of a magnetite concentrate having stable operation, economy, environmental protection, high efficiency and strong adaptability, and provides an application method of the flotation collector.

The invention relates to a pre-separation process for reducing the phosphorus loss rate of micro-fine particle collophanite. According to the technical scheme, the method comprises the steps that phosphoric ore pulp is introduced into pre-separation operation, an emulsifying collecting agent and a foaming agent are added into the phosphoric ore pulp, pre-separation is conducted, an in-tank product I and a foam product I are obtained, and the foam product I is tailings I; the product I in the tank is introduced into reverse flotation roughing operation, a dealumination collecting agent is added into the product I in the tank for roughing, and a product II in the tank and a foam product II are obtained; and the foam product II is introduced into scavenging operation, a dealumination collecting agent is added into the product I in the tank for scavenging and roughing, a product III in the tank and a foam product III are obtained, the foam product III is tailings II, and the product III in the tank and the product II in the tank are combined into phosphate concentrate. According to the method, pre-separation is conducted on the micro-fine-particle collophanite, the problem that the micro-fine-particle collophanite is poor in separation performance is effectively solved, the grade of tailings can be greatly reduced, the phosphorus loss rate of micro-fine-particle collophanite separation is reduced, meanwhile, scavenged middlings do not enter a circulation and are directly combined into phosphorus concentrate, the phosphorus concentrate yield is further increased, the whole technological process is an open circuit, and the method is suitable for industrial production. The process is short and easy to control, and industrialization can be realized.

The invention relates to the technical field of phosphate ore flotation magnesium removal, in particular to a method for accurately measuring and calculating the single reverse flotation ore dressing ratio of collophanite by using the MgO content of selected raw ore, and the method comprises a data acquisition module, a calculation module and a verification module; the sample collection unit is used for collecting selected raw ore, concentrate and tailing samples; the detection unit is used for detecting data of P2O5 content and MgO content of selected raw ore, P2O5 content of concentrate and P2O5 content of tailings in the sample, and the data transmission unit is used for transmitting the data obtained by the detection unit. According to the method for accurately measuring and calculating the single reverse flotation ore dressing ratio of the collophanite by using the MgO content of the selected raw ore, the measuring and calculating accuracy is high. According to the method, the ore dressing ratio of each month is calculated through a large amount of actual production data, and then a linear regression relational expression i = 0.96 + 0.0685 * R between the ore dressing ratio and the MgO content of selected raw ore is obtained through linear fitting. Subsequent data verification further ensures the reliability of the relational expression, and the ore dressing ratio can be accurately measured and calculated.

The application belongs to the technical field of phosphate ore dressing, and particularly discloses a method for improving double reverse flotation froth of siliceous-calcitic collophanite, which comprises the following steps: first, adjusting the pH of the phosphate ore slurry to be acidic by oxalic acid, adding a demagnesium collector to perform reverse flotation demagnesium, obtaining a demagnesium concentrate slurry, adding active carbon to the demagnesium concentrate slurry and mixing, then diluting the slurry, adjusting the pH value to 6.5-8, adding a foam inhibitor and mixing; adding a cationic collector to perform reverse flotation for removing aluminum and silicon, and performing solid-liquid separation on the reverse flotation slurry to obtain a phosphate concentrate. The method provided by the application adjusts the pH by using oxalic acid when performing reverse flotation demagnesium, and after demagnesium, the slurry is mixed with active carbon to adsorb the reagent, and a foam inhibitor is added; then, reverse flotation is performed for removing aluminum and silicon, which can change the physicochemical properties of the froth surface, greatly shorten the half-life of the froth, and ensure the ore dressing effect.

The utility model provides a foam gathering device for a tailings conveying trough in a black metal reverse flotation process, which comprises a water storage tank, a water supply pipeline communicated with the water storage tank is arranged at the top of the water storage tank, and a water outlet plate is arranged at the bottom of the water storage tank; the water supply pipeline is L-shaped and comprises a vertical pipe and a horizontal pipe, the end part of the vertical pipe is inserted into the water storage tank, a water flow distributor is arranged at the end part of the vertical pipe, the horizontal pipe is provided with an adjusting valve, and two sectional splitter plates which are symmetrically arranged are arranged below the water flow distributor. Foam in the tailing conveying groove can be gathered, repeated foaming of the foam groove caused by flowing of ore pulp and tumbling of the bubbles under the action of foaming agents is avoided, the working efficiency of the flotation tailing pulp suction machine is improved, the tailing conveying capacity of a flotation machine is guaranteed, the tailing output rate of the flotation process is increased, and the flotation efficiency is improved. Therefore, flotation production indexes are guaranteed, and the method is of great significance to production of reverse flotation processes of flotation procedures of dressing plants.

The present invention discloses a combined slurrying process for gasification fine slag and low-rank / oxidized coal slime, specifically comprising the following steps: slurrying the gasification fine slag, feeding it into an interference bed separator for sorting and deashing, feeding it into a high-frequency screen for screening and grading to obtain oversize concentrate, oversize tailings, and undersize fine slag; mixing the obtained undersize fine slag with low-rank / oxidized coal slime, and performing reverse flotation to obtain flotation concentrate and flotation tailings; mixing the oversize concentrate and flotation concentrate to obtain a mixed pulp; feeding the mixed pulp into a ball mill for grinding to obtain a finished water-coal slurry; mixing the flotation tailings with the oversize tailings, and feeding it into a filter press for dehydration to obtain a high-ash product. In the present invention, the gasification fine slag is deashed and screened and then mixed with the low-rank / oxidized coal slime after reverse flotation to prepare the water-coal slurry, achieving the comprehensive utilization of two low-value-added products. At the same time, the slurrying process does not require deep dehydration of the gasification fine slag, solving the problem of difficult dehydration of the gasification fine slag and achieving its economic benefits.

The invention belongs to the technical field of mineral processing flotation reagents, and particularly relates to an iron ore reverse flotation low-temperature collecting agent and a preparation method thereof, the iron ore reverse flotation low-temperature collecting agent comprises the following raw materials by weight: 60-100 parts of sodium aliphatate, 10-30 parts of MES, 10-30 parts of soybean oleic acid, 5-10 parts of an anionic surfactant, 1-5 parts of sodium dodecyl benzene sulfate, and 5-15 parts of a palm light component. The iron ore reverse flotation low-temperature collecting agent is wide in raw material source, good in stability, simple in manufacturing process and low in production cost; and meanwhile, the low-temperature collecting agent for reverse flotation of the iron ore is high in beneficiation efficiency at low temperature, the grade of obtained fine iron powder is high, and the yield of concentrate is increased. The iron ore reverse flotation low-temperature collecting agent does not cause harm to the environment and human bodies, belongs to a green and environment-friendly collecting agent, and has a wide application prospect.

The present invention belongs to the technical field of vanadium-containing mineral beneficiation and discloses a vanadium-containing shale beneficiation method for removing calcium and enriching vanadium by gravity flotation and combined selection. The method comprises the following steps: S1. crushing the raw ore, adding water to ball milling, and then preparing a slurry. The slurry is then passed through a spiral launder for gravity selection to obtain a coarse-grained vanadium ore product and a fine-grained vanadium ore product; S2. the coarse-grained vanadium ore product is slurried with water and subjected to reverse flotation to obtain vanadium concentrate I and tailings I; S3. the fine-grained vanadium ore product is first desludged to obtain vanadium concentrate II and desludified minerals. The desludified minerals are then slurried with water and subjected to direct flotation to obtain vanadium concentrate III and tailings II; S4. the vanadium concentrates I, II, and III are combined to form a final concentrate, and the tailings I and II are combined to form a final tailings. The method has the characteristics of high V recovery, good Ca separation effect, simple process, and environmental friendliness.

The application discloses a harmless treatment method of aluminum electrolysis overhaul slag, and comprises the following steps: removing large particle iron through magnetic separation, recovering aluminum particles, high-temperature roasting in a clinker kiln, carbon removal through flotation, obtaining high-purity carbon through carbon acid and alkali purification, obtaining iron minerals through flotation, obtaining solid cryolite Na3AlF6 through drum drying, realizing aluminum and silicon mineral separation through reverse flotation desilication, obtaining aluminum mineral liquid, and obtaining aluminum oxide after roasting the aluminum mineral liquid.The application adopts a method of high-temperature roasting, flotation and acid-alkali treatment cooperation, high-temperature roasting makes fluoride in the overhaul slag into harmless calcium fluoride, and toxic cyanide is cracked in high temperature to generate nitrogen oxide, realizing harmless treatment of cyanide.The application realizes effective separation of carbon material, iron ore powder, aluminum ore powder and solid cryolite and other substances in the overhaul slag through multiple flotation treatments, realizes resource utilization of useful elements, opens up a new way for harmless disposal and resource utilization of the overhaul slag, and has very significant economic benefits.

The present invention relates to a separation method for high-aluminum, high-silicon phosphate ore, belonging to the technical field of phosphate ore beneficiation. It mainly includes three-stage separation operation processes of gravity separation, optoelectronic separation and flotation: the original ore is crushed and then screened by a screening machine, and the oversize product enters the heavy medium beneficiation process to obtain gravity separation concentrate and gravity separation tailings; the gravity separation concentrate undergoes optoelectronic separation to obtain optoelectronic separation concentrate and optoelectronic separation tailings; the optoelectronic separation concentrate and the undersize product of the screening machine enter the grinding process together, and then through the double reverse flotation process to obtain flotation concentrate I and flotation tailings I; after grinding, the optoelectronic separation tailings enter the double reverse flotation process to obtain flotation concentrate II and flotation tailings II respectively. The method of the present invention adopts a combined process of gravity separation, optoelectronic separation and flotation to classify and process phosphate ore, which can not only obtain high-quality concentrate, save costs, but also improve the recovery rate.