20results about How to "Improve flotation recovery" patented technology

The invention discloses application of a combined collecting agent in flotation of low-grade copper oxide ore, and belongs to the technical field of beneficiation flotation reagents. The combined collecting agent comprises a chelating agent and a xanthate collecting agent, the chelating agent is benzyl-N, N-dimethyl dithiocarbamic acid, the xanthate collecting agent is amyl xanthate, and the combined collecting agent is used for flotation of low-grade copper oxide ore. Ore is subjected to crushing, ore grinding, coarse separation and pulp mixing to obtain ore pulp to be floated, a gangue inhibitor is firstly added into the ore pulp, then sodium sulfide is added to activate copper oxide ore, and after activation, a combined collecting agent and a foaming agent are sequentially added to recover copper oxide minerals in the ore. Compared with a single xanthate collecting agent, the low-grade copper oxide ore combined collecting agent is small in agent dosage and convenient to add, the dosage of amyl xanthate serving as a collecting agent and the dosage of sodium sulfide serving as a vulcanizing agent are reduced, the beneficiation cost is reduced while the flotation recovery rate and grade of low-grade copper oxide ore are improved, and the low-grade copper oxide ore combined collecting agent is an environment-friendly agent.

The invention relates to a coarse particle fluidized bed column separation kinetic analysis device and method, belongs to the technical field of mineral processing and resource recovery, and solves the problem that fluidized bed column separation kinetic analysis is difficult to systematically develop. The device comprises a fluidized bed column, a filling medium, a slurry supply unit, a water supply unit and a gas supply unit, the fluidized bed column comprises a barrel body, the filling medium is arranged in the barrel body, the volume of the filling medium is reduced from bottom to top in a layered mode, the slurry supply unit comprises a slurry mixing barrel and a first conveying pipeline, and the first conveying pipeline is communicated with the slurry mixing barrel and the top of the barrel body; and the water supply unit is communicated with the air supply unit and then communicated with the lower part of the barrel body. According to the invention, the multi-element and multi-scale filling medium is adopted to disperse fluid and assist fluidization, and is limited between the two screens, so that the use amount of clear water and materials is reduced, a fluidized bed column separation dynamic test is optimized from the aspect of structure, the follow-up wastewater treatment amount of coarse grain mineral fluidized bed column separation of an actual separation plant is reduced, and the production cost is reduced. And the production cost of a selection plant is saved.

The flotation recovery method comprises the following steps: carrying out ore grinding and dissociation treatment on raw copper ore, then carrying out roughing, and grading roughing tailings to obtain three-fraction ore pulp products of + 200 meshes, 200-400 meshes and-400 meshes; the + 200-mesh ore pulp product is subjected to coarse grain flotation, a combined collecting agent of disulfide diisopropyl xanthate and isopropyl xanthate is adopted for recycling coarse grain copper minerals, and obtained rough concentrate is returned to the ore grinding operation; carrying out fine particle flotation on the ore pulp product with the size of-400 meshes by adopting a fine particle flotation collecting agent, and combining obtained rough concentrate with copper roughing rough concentrate for concentration; ore pulp products of 200-400 meshes are directly used as tailings. According to the method, the lost coarse and fine copper minerals in the ore pulp can be intensively recovered, and the copper flotation recovery rate can be increased.

The lead-zinc ore flotation method comprises the following steps that raw ore is ground to be fine, after a sulfur inhibitor, a zinc inhibitor, a lead collecting agent, a lead flocculating agent and a foaming agent are sequentially added, lead concentrate is obtained through flotation, after the sulfur inhibitor, a zinc activating agent, the zinc collecting agent and the foaming agent are sequentially added into lead flotation tailings, the lead concentrate is obtained through flotation; and zinc concentrate is obtained through flotation. According to the method, the technological process is simple and convenient, industrial production is easy, the adaptability to ore grinding products containing the micro-fine-particle galena is high, the flotation recovery rate of the micro-fine-particle galena can be increased, the quality of zinc concentrate is guaranteed, and better lead-zinc flotation indexes are obtained.

The invention provides a method for improving the flotation recovery rate of ilmenite by vanadium titano-magnetite, which comprises the following steps: directly carrying out strong magnetic scavenging on ilmenite flotation tailings, or carrying out strong magnetic scavenging on the ilmenite flotation tailings after fine-fraction tailings are removed by grading to obtain strong magnetic concentrate; concentrating the strong magnetic concentrate and then carrying out ball milling; or the strong magnetic concentrate is subjected to spiral reselection for multiple times, and the obtained reselected concentrate is concentrated, then subjected to ball milling and ore grinding and then returned to the flotation process. According to the method, flotation, strong magnetism or gravity separation, ore grinding and other processes are crossed, high efficiency of vanadium titano-magnetite ilmenite flotation is achieved, and the problems that the coarse grain part in flotation tailings is high in grade and serious in loss are solved; and the problem of high reagent consumption is solved, and technical support is provided for flotation of vanadium titano-magnetite and ilmenite. The grade of tailings TiO2 is reduced by about 1%, the recovery rate is improved by about 5-8%, and the medicament cost is reduced by about 10%.

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.

This utility model discloses a high-efficiency ore crushing and desliming system, including a raw ore stockpile, a heavy plate feeder, a jaw crusher, a four-layer linear vibrating screen, a first cone crusher, a single-layer vibrating screen, a second cone crusher, a second slurry tank, a second slurry pump, an intermediate stockpile, a ball mill, a first slurry tank, a first slurry pump, a first hydrocyclone, a third slurry tank, a third slurry pump, a second hydrocyclone, a thickener, and a fourth slurry pump. This utility model is designed for the development of high-mud ore in tropical rainforest regions. It can significantly improve the efficiency of ore crushing and conveying, enhance equipment uptime, and ultimately achieve the separate production of ore slime, which can be independently fed into a carbon leaching system. This improves the beneficiation indicators of high-mud gold ore and is of great significance for the efficient development of difficult-to-process high-mud ore in tropical rainforest regions. It also provides important reference for the crushing and development of similar ores.

The application discloses a stable and efficient inflatable mine flotation machine, which comprises a flotation column, a feeding mechanism, an inflation pump, a gas supplement mechanism, an aeration mechanism, a flow guide mechanism and a mixing mechanism. The feeding mechanism comprises a slurry pump and a mixing cylinder. The slurry pump is fixedly installed on the upper side of a mounting beam, and the mixing cylinder is fixedly installed on the middle part of the mounting beam. The slurry pump is in communication with the inside of the mixing cylinder and is used for realizing stable conveying and preliminary mixing of slurry. The gas supplement mechanism comprises a gas supplement pump, a gas distribution pipe and a gas distribution hole. A separate inflation pump primary gas supply structure and a gas supplement mechanism secondary gas supplement structure are arranged to form a multi-stage gas mixing system in cooperation with the internal mixing mechanism of the mixing cylinder. The inflation pump precisely supplies air through the inflation cover and the air inlet hole opposite the jet area of the slurry nozzle, and realizes primary negative pressure air mixing by using the high-speed jet negative pressure of the slurry. The gas supplement pump realizes circumferential uniform secondary air supplement in cooperation with the annular gas distribution pipe, the gas distribution hole and the gas guide cover, and avoids air floating and escaping.

The application provides a collector for apatite flotation and a preparation method and use method thereof, and relates to the technical field of mineral flotation. Raw materials of the collector comprise, in mass fractions, 50-100 parts of discarded cooking oil, 50-100 parts of cottonseed crude oil, 10-30 parts of oleic acid and 10-40 parts of nonylphenol polyoxyethylene ether. The collector provided by the application has a synergistic effect between multiple components, can effectively improve the defects of poor selectivity, low low-temperature solubility and insufficient dispersibility of traditional fatty acid collectors, improve the flotation recovery rate and concentrate grade of low-grade complex associated apatite, and reduce the dosage of gangue inhibitors.

The invention discloses a synthesis method of a gold ore flotation auxiliary collecting agent and a gold ore beneficiation method. The synthesis method of the gold ore flotation auxiliary collecting agent comprises the step that dibromoalkane and a vulcanizing agent react in a mixed solvent of an organic solvent and water, and the gold ore flotation auxiliary collecting agent is synthesized. The bifunctional mercaptan auxiliary collecting agent obtained through synthesis is combined with a traditional xanthate collecting agent for use, the agent collecting performance is improved through the strong bonding effect of-SH groups in the auxiliary collecting agent and active sites on the surfaces of gold-loaded minerals, and therefore the gold ore flotation index is improved.

The invention relates to the technical field of mineral processing, in particular to a flotation reagent for improving the separation efficiency of indium tin antimony ores and a preparation method of the flotation reagent, the flotation reagent comprises an activating agent, a collecting agent, an inhibitor, a foaming agent, a pH adjusting agent and an auxiliary agent, the collecting agent is a mixed solution of N, N-diethyldithiocarbamate, N-phenylacetylhydroxamic acid (NPHA) and sodium carbonate, and the inhibitor is a compound complex of sodium hexametaphosphate and water glass. According to the method, diethyl ((2-hydroxyethoxy) methyl) phosphonic acid ester (DEHEMP) serves as an activating agent, a mixed solution prepared from N, N-diethyldithiocarbamate, N-phenylacetylhydroxamic acid (NPHA) and sodium carbonate according to a certain proportion serves as a collecting agent, and a compound complex of sodium hexametaphosphate and water glass serves as an inhibitor. The effect of improving the flotation process efficiency is achieved, waste of metal resources can be effectively avoided, the production cost is reduced, and the production benefit is improved.

The invention discloses an activating agent for refractory copper oxide ore and application of the activating agent, and belongs to the technical field of beneficiation flotation reagents. The activating agent 2-mercaptopyridine is applied to flotation of the refractory copper oxide ore, a coordination reaction and an oxidation-reduction reaction in ore pulp are carried out at the same time, the copper oxide ore is selectively and rapidly activated, and the flotation rate of the copper oxide ore is further increased. The activating agent 2-mercaptopyridine is suitable for treating refractory copper oxide ore which is high in oxidation rate and serious in argillization, in the flotation process, the flotation effect of copper oxide ore can be greatly improved without adding vulcanizing agents such as sodium sulfide, and the flotation efficiency of copper oxide ore is greatly improved. And the flotation rate of the refractory copper oxide ore can be increased by 20% or above on the premise that it is ensured that the copper flotation recovery rate is higher than 80%, and good industrial application prospects are achieved.

This invention belongs to the field of mineral resource recycling technology, specifically disclosing a beneficiation method for recovering ultra-low-grade scheelite from molybdenum tailings. For refractory scheelite with severe alteration and mudding, the method employs pre-slurry conditioning, enhanced pretreatment with reagents moved forward, followed by grinding and classification of the raw ore. By combining collectors, the refractory scheelite is synergistically recovered, ultimately obtaining a tungsten concentrate with a grade >26%, achieving a comprehensive actual recovery rate of 77%. This invention's process achieves full recovery and utilization of refractory scheelite resources in tailings, while reducing the operating costs of refractory ore recovery, creating considerable economic and social benefits.

The invention discloses a phosphorite low-temperature flotation collecting agent and a preparation method and application thereof. The phosphorite low-temperature flotation collecting agent is prepared from the following components in percentage by mass: 5-25% of vegetable oil, 1-5% of a chlorinating agent, 1-5% of an alkaline compound, 1-10% of a foaming agent and the balance of water. The prepared low-temperature collecting agent has good water solubility and is convenient to use. When the collecting agent is applied to flotation of low-grade phosphorite, the phosphorite can be effectively floated in the temperature range lower than 20 DEG C, the collecting agent has the advantages of being uniform in foam size and low in viscosity, and the flotation recovery rate is remarkably increased.

This invention discloses a copper slag modification and granulation system with real-time adjustable atmosphere and composition, comprising: a smelting furnace with an adjustable fume hood on top; an insulated chute for conveying the modified slag to the granulation section; a granulation device for dry centrifugal granulation of the modified slag; the adjustable fume hood having: an oxidizing gas interface for introducing oxidizing gas into the furnace; a reducing gas interface for introducing reducing gas into the furnace; a backup gas interface for introducing either oxidizing or reducing gas; an openable / closable observation / feeding port for observing the furnace state and / or adding modified materials to the furnace; and a flue gas outlet for discharging the flue gas generated in the furnace. This system integrates multiple gas interfaces and a feeding port on the adjustable fume hood of the smelting furnace, enabling active control of the slag's oxidation-reduction state and chemical composition during the slag holding stage, thereby optimizing the slag's properties and creating conditions for subsequent granulation processes.

The invention discloses 3-allyl salicylic acid hydroxamic acid compounds and their application in metal ore flotation. In the invention, 3-allyl salicylic acid hydroxamic acid compounds are used as flotation collectors to flotation-recover valuable metal minerals from rare earth, tin, tungsten, titanium, copper, iron and other ores. The flotation collector can effectively improve the flotation enrichment and recovery of rare earth, tin, tungsten, titanium, copper, iron and other minerals, and improve the flotation recovery rate of valuable metal ores.

This utility model discloses a non-powered multi-stage hydrocyclone classifier and mineral processing system. The classifier includes a first hydrocyclone, a second hydrocyclone, and a third hydrocyclone; the diameter of the first hydrocyclone is smaller than that of the second hydrocyclone but larger than that of the third hydrocyclone. The overflow port of the first hydrocyclone is higher than and connected to the feed port of the second hydrocyclone; the sand discharge port of the second hydrocyclone is higher than and connected to the feed port of the third hydrocyclone; the overflow ports of the second and third hydrocyclones are connected to the feed port of the stirring device. The non-powered multi-stage hydrocyclone classifier proposed in this utility model achieves precise control of the classification of grinding products by connecting multiple hydrocyclones in series, thereby greatly reducing the probability of coarse particles being washed away and effectively improving the qualified rate of feed fineness and the final flotation recovery rate.

The invention relates to the technical field of ores, in particular to a desulfurization and desiliconization process for high-sulfur and high-silicon bauxite. Comprising the following steps: (1) washing and grinding ores; (2) a desulfurization activating agent, an inhibitor, a desulfurization collecting agent and a foaming agent are added for reverse flotation desulfurization, and sulfur concentrate and filter residues are obtained; (3) adding a desilicication collecting agent into the desulfurized filter residues for flotation desilicication to obtain aluminum concentrate and tailings; the desulfurization collecting agent is prepared from, by weight, 1-2 parts of modified thioether ethyl hydroximic acid and 4-7 parts of xanthate. According to the desulfurization and desiliconization process for the high-sulfur and high-silicon bauxite, the flotation recovery rate of minerals is remarkably increased, and the quality of flotation concentrate is improved.

The invention discloses a flotation foaming agent for separating sulfide minerals and clay minerals and a preparation method of the flotation foaming agent. The flotation foaming agent consists of the following components in parts by weight: 3-8 parts of polyethylene glycol, 8-22 parts of mixed hexahydric alcohol, 10-18 parts of mixed ether alcohol and 36-66 parts of C5-C14 mixed fatty alcohol ether ester blended diesel oil, the mixed hexahydric alcohol is a mixture of cyclohexanol and methyl isobutyl carbinol; the mixed ether alcohol is a mixture of butyl ether alcohol, tripropylene glycol monomethyl ether and tripropylene glycol butyl ether; the C5-C14 mixed fatty alcohol ether ester blended diesel oil is a mixture of industrial C5-C14 mixed fatty alcohol ether ester and light diesel oil. According to the flotation foaming agent provided by the invention, by compounding all the components and utilizing the synergistic effect among the components, flotation separation of copper sulfide, nickel sulfide and molybdenum minerals and common clay gangue such as talc, serpentine, chlorite and mica can be effectively realized, so that the comprehensive recycling rate of copper sulfide, nickel sulfide and molybdenum ore resources is improved.

This invention belongs to the field of metallurgical solid waste resource utilization technology, specifically disclosing a method for the comprehensive recovery of copper and iron from copper slag flotation tailings. The method involves magnetic roughing and magnetic scavenging of the copper slag flotation tailings, merging them to obtain a mixed magnetic concentrate; the mixed magnetic concentrate is regrinded to a final density of -0.038 mm (80%–95%); the regrinded product enters the flotation system, using a combination of dimethyl sulfoxide and dispersant red at a mass ratio of 1:6–8 as collectors, and undergoes two roughing, two cleaning, and two scavenging processes to obtain copper concentrate; the copper-removed tailings from the flotation process undergo two roughing and three cleaning magnetic separations to obtain iron concentrate; the middlings from the three cleaning stages are combined with the magnetic scavenging tailings to form the final tailings. This invention processes copper slag flotation tailings with a copper grade of 0.22%–0.31% and an iron grade of 40%–45%, yielding copper concentrate with a copper grade of 6.8%–8.1% and a recovery rate of 43%–48%, and iron concentrate with an iron grade of 54%–60% and a recovery rate of 69%–79%. This invention eliminates the need for roasting, achieves co-recovery of copper and iron, and features a compact process, strong reagent selectivity, and stable performance indicators.