130results about How to "Improve flotation recovery" patented technology

Disclosed is an ore dressing method of micro-fine particle tantalum-niobium ores. The ore dressing method is characterized by including steps of firstly, performing desliming pre-treatment to obtain set sand and micro-mud; secondly, adding an adjusting agent of sodium carbonate, an inhibiting agent of water glass, an activating agent of lead nitrate and collectors of benzohydroxamic acid and hydroxyamino acid to the set sand for once roughing; adding the benzohydroxamic acid and the hydroxyamino acid for once or twice scavenging; adding the water glass for once or twice concentration or blank concentration to obtain tantalum-niobium rough concentrates and flotation tailings; thirdly, performing de-reagent and de-foaming: adding sulfuric acid to the tantalum-niobium rough concentrates, and stirring the mixture until foams are disappeared; and fourthly, performing gravity concentration: subjecting the tantalum-niobium rough concentrates to de-reagent and de-foaming, and subjecting the tantalum-niobium rough concentrates to gravity concentration to obtain tantalum-niobium concentrates and gravity concentration tailings. According to the ore dressing method of the micro-fine particle tantalum-niobium ores, the recovery rate of the micro-fine particle tantalum-niobium ores is increased by over 30%, and the ore dressing method is applicable to primary mud and secondary mud with sizes of -0.037mm in tantalum-niobium ores.

The invention discloses a 6-aryl amido hexyl hydroximic acid collecting agent and preparation and application methods thereof. 6-aryl amido hexyl hydroximic acid represented by a formula (I) is taken as a collecting agent and utilized in flotation of tungsten ore, tombarthite ore, tin ore or bauxite, wherein R represents H or C1-8 alkyl. 6-aryl amido hexyl hydroximic acid and sodium hydroxide, potassium hydroxide or ammonium hydroxide are put into water to prepare an aqueous solution of 6-aryl amido hexyl hydroxyoximate; a flotation reagent is added for size mixing during an ore grinding and/or flotation process, the added reagent at least contains the aqueous solution of 6-aryl amido hexyl hydroxyoximate, and the dosage of 6-aryl amido hexyl hydroximic acid ranges from 100g/t to 3,500g/t; and useful metallic minerals are floated out through a froth flotation method, and the flotation recovery rate can be increased by 2%-5%.

The invention discloses a xanthic acid acyl ester collecting agent and preparation and application methods thereof. The preparation method comprises the steps that alkyl xanthogenate and acyl chloride are taken as raw materials and react for 1-4 h under a reaction temperature 10-50 DEG C to generate xanthic acid acyl ester. According to the preparation method, the reaction operation is simple, no waste water is generated, and the product yield coefficient is high; a xanthic acid acyl ester collecting agent has stronger collecting capacity and selectivity for sulphide ores such as copper sulphide ores, lead zinc ores and copper molybdenum ores precious metal ores as well as associated gold and silver precious metal ores, and better flotation indexes are obtained in the flotation test process.

The invention discloses an activating agent for flotation of copper-nickel sulfide ores.The activating agent is prepared from a component A and a component B, wherein the component A is copper salt or nickel salt, and the component B is amine, ammonia or ammonium salt.Compared with an existing activating agent for flotation of copper-nickel sulfide ores, the activating agent for flotation of the copper-nickel sulfide ores can remarkably improve the flotation and recovery rate and grade of the nickel-copper the copper-nickel sulfide ores, a good flotation effect can be obtained within the ore pulp pH value range of 7-11, the activating agent adapts to the complicated and volatile ore pulp conditions of industrial flotation, raw materials are cheap and easy to obtain, no harmful gas nor volatile substance is discharged after the activating agent is added into a flotation system, and the activating agent is green, is environmentally friendly, is harmless to the body of an operator and does not corrode flotation equipment.

The present invention discloses inflated metallurgical floatation process and apparatus, and features the completely covered microbubble inflating in the self balanced water separated microbubble generating and inflating mode. The apparatus includes a main machine, a bubble overflowing system, a microbubble generating separator, a microbubble generating system, an automatic mineral slurry regulating mechanism to control the liquid level, etc. Inside the floatation column, leaching tank and oxidation tank, great amount of microbubbles are generated in the bottom and flown in the opposite direction to the falling mineral slurry so as to raise the stirring effect, form stable floating bubble layer, speed oxygen dissolution, increase oxygen utilizing rate, enhance oxidizing leaching and raise floatation recovering rate.

The invention relates to a flotation method, in particular to a flotation method for improving the flotation recovery rate of a target mineral in a complex ore. The method comprises the following steps: grinding a target mineral in a raw ore until the target mineral is basically dissociated; producing a concentrate 1 and a tailing 1 through roughing one or twice, cleaning twice or three times, as well as scavenging three to ten times; combining a bottom product of the concentrate 1 and all scavenged foam products to form a middling; concentrating and grinding; returning the grinded ore pulp to a flotation process through an independent sequence to obtain a concentrate 2 and a tailing 2; and combining the concentrate 1 and the concentrate 2 to obtain a final concentrate. According to the flotation method in the invention, the grinding energy consumption can be effectively reduced, partial target mineral with low floating speed is recovered, and the flotation recovery rate of the target mineral is improved by 5 to 20 percent.

The invention discloses a copper gold silver ore flotation collecting agent and a flotation method, belongs to the technical field of ore flotation, and solves the prominent problems of low copper gold silver ore beneficiation efficiency, high cost and the like. The copper gold silver ore flotation collecting agent ester-205 is prepared from the following raw materials: 30 to 40 parts of N,N-diethyl dithiocarbamate, 20 to 25 parts of diisopropyl dithiophosphate, 10 to 15 parts of black powder acid, 20 to 30 parts of terpenic oil and 2 to 5 parts of ethyl alcohol. The flotation method comprises the following steps: preparation of flotation pulp, flotation preparation and copper gold silver ore flotation. According to the copper gold silver ore flotation collecting agent and the flotation method, multiple circulation times and metal loss of target metal ores in a flotation process are effectively avoided, so that the trunk flotation process is shortened, and the investment and operation cost is reduced; the collecting agent ester-205 is high in collecting capacity; the flotation speed is increased; the copper gold silver recycling rate is increased; the number of the scavenging times is reduced; and the types and the use amounts of flotation agents are reduced.

The invention discloses a process for reclaiming gold and silver by floatation from acid leaching ore pulp in wet zinc smelting. The process reclaims the gold and the silver by floatation from the ore pulp after zinc concentrate calcined sand is leached by acid by using a known floatation system under the condition of keeping the primary zinc leaching system. The process comprises the following steps of: extracting the ore pulp after the zinc concentrate calcined sand is leached by acid, adding a collecting agent and a foaming agent for dressing sulfide ores into the ore pulp, fully stirring the ore pulp, then delivering the ore pulp to the flotation system, and adding the collecting agent and the foaming agent into the ore pulp in a flotation tank of each flotation process after the rough flotation process of the flotation system again so as to realize flotation reclamation of the gold and the silver in the ore pulp. The process efficiently reclaims the gold and the silver without affecting the normal operation of a main zinc system, realizes comprehensive utilization of resources, and brings great economic benefit to enterprises.

The invention provides application of acyl amino polycarboxylic acid/hydroximic acid like compound in mineral flotation. A structural formula of the acyl amino polycarboxylic acid/hydroximic acid likecompound is shown as a formula (I); (shown in the description) wherein R in the formula (I) represents aliphatic hydrocarbyl of C<6>-C<18>, n=1-3, and M1, M2, M3 and M4 are separately selected from one or several of -OH, -ON, -OK, -NHOH, -NHON or -NHOK. And n<1>=1-3, n<2>=1-3, and n<3>=1-3. The acyl amino polycarboxylic acid/hydroximic acid like compound is used as a collecting agent to enhance the chelation and recognition action on metal oxidized ores, facilitate ordered arrangement of the collecting agent on the mineral surface, effective flotation recovery is carried out on tungstenores, rare earth ores, tin ores, lithium ores, phosphorus ores, manganese oxide ores, cooper oxide ores, fluorites or titanium iron ores, the acyl amino polycarboxylic acid/hydroximic acid collectingagent has the advantages of high collecting capacity, high selectivity, low ton ore use amounts and the like, and is especially suitable for processing difficultly selected fine grain ores.

The invention provides a hydrocarbon amide-bi-hydroxamic acid compound and application thereof in mineral flotation. The structural formula of the hydrocarbon amide-bi-hydroxamic acid compound is as shown in the description, wherein R represents an aliphatic hydrocarbon group of C2 to C18, and n ranges from 1 to 10. The hydrocarbon amide-bi-hydroxamic acid compound serving as a collector can enhance the chelation and recognition to metal oxidized ores, promote the ordered arrangement of the collector on a mineral surface and effectively recover tungsten ores, rare earth ores, tin ores or ilmenite by flotation, has the advantages of strong collecting capacity, high selectivity, low consumption of tons of ores, etc., and is especially suitable for processing hard dressing fine grained ores.

The invention relates to a process for removing impurities from bauxite, in particular to an ore grinding flotation silicon-removing method of bauxite, which comprises the steps of: carrying out primary floatation on the bauxite after rough grinding, wherein the floated foam is used as a concentrate product; carrying out secondary ore grinding on floating underflow; and carrying out secondary floatation after secondary ore grinding, wherein the floated foam is used as a concentrate product and the underflow is used as tailings to be discharged. The invention has the characteristics of proper granularity of flotation pulp, reasonable fraction distribution, shortened process flow, reduced mineral dressing cost and improved floatation recycling rate due to the adoption of reasonable configuration of ore grinding and floating and equipment selection.

The invention relates to a method for improving the flotation recovery rate of copper and nickel and reducing content of magnesium oxide in concentrates of copper-nickel sulfide ores. According to the method, before the copper-nickel sulfide ores are subjected to flotation, ultrasonic waves are used for carrying out dispersion treatment on ore pulp. The ore pulp can be crude ore pulp added with a collecting agent, or ore pulp which comprises the collecting agent and enters a random flotation operation; the ultrasonication can be carried out before flotation and also can be simultaneously carried out with flotation. According to the invention, supersonic jet generated in the ultrasonic treatment and cavatition are utilized to desorb serpentine pulp covering the surface of sulphide mineral, the flotation recovery rate of the sulphide mineral is improved, the quantity of the serpentine pulp entering the concentrates is reduced and the content of magnesium oxide in the concentrates of the copper-nickel sulfide ores is reduced, so that a sorting index is improved.

The invention belongs to the technical field of rutile flotation, and particularly relates to a rutile flotation collector composition and application thereof. The rutile flotation collector composition is composed of a main hydroximic acid collector and an assistant RC collector. According to the application, a lead nitrate activator, the main hydroximic acid collector, the assistant RC collector and an MIBC frother are sequentially added in rutile flotation pulp, wherein before the next agent is added, stirring is carried out for 3 min every time after each agent is added; after all the agents are added, ventilated flotation is carried out; after flotation is finished, an obtained froth product and tailings in a flotation tank are respectively filtered, dried and weighed finally. According to the rutile flotation collector composition and the application thereof, on the basis of the hydroximic acid collector with good selectivity, the assistant RC collector capable of achieving a synergistic effect with hydroximic acid is added, so that the collecting capability of the agents is substantially improved, and the flotation recovery rate of rutile is effectively improved; meanwhile, the use amount of hydroximic acid is reduced, so that the agent cost for rutile flotation is greatly reduced.

The invention discloses a turbulent flow regulating and controlling external particle fluidized bed uniform in turbulence degree and belongs to a mineral separation device. The device comprises a column floating area, a concentrate overflow groove in the upper portion of the column floating area and a middling ore circulating port outside the column floating area; the lower portion of the column floating area is provided with a gas and liquid mixing area; a fluidized bed mineralizing and floating area is arranged between the column floating area and the gas and liquid mixing area; the fluidized bed mineralizing and floating area is provided with a mineralizing area 1, a mineralizing area 2,... and a mineralizing area n; and the interiors of the mineralizing area 1, the mineralizing area 2,...and the mineralizing area n are filled with turbulent flow regulating and controlling particles. According to the turbulent flow regulating and controlling external particle fluidized bed uniform in turbulence degree, mineralizing and floating are totally separated, and are different from current integration of mineralizing and floating; the mineralizing time can be achieved by adjusting the mineralizing area segment number of the fluidized bed mineralizing and floating area, and therefore the kinetic energy utilizing efficiency is very high; the energy dissipating rate is high, the bubble size balance and stable retention of high-pressure gas are guaranteed, and the floating recovery rate is increased; and upper, middle and lower mineralizing fluidized bed layers are provided with different turbulence degrees, and the mineralizing efficiency is high.

The invention discloses a flotation collector solvent for recovering tantalum-niobium from granite pegmatite tantalum-niobium ore and application thereof. The flotation collector solvent comprises a main collector solvent hydroxamic acid compound and an auxiliary collector solvent TB, The mass ratio of the main collector solvent hydroxamic acid compound (in terms of the mass of the hydroxamic acid) to the auxiliary collector solvent TB (in terms of the mass of the fatty acid) is 1: (0.2-2). In the flotation collector solvent, the hydroxamic acid compound formed by the hydroxamic acid and the inorganic metal ion compound is used for replacing the traditional form of activating the inorganic metal ion and then adding the hydroxamic acid collector solvent, and the selectivity of the hydroxamic acid compound is better than that of the traditional form of activating the inorganic metal ion; the auxiliary collecting solvent TB which can generate synergistic action with the hydroxamic acid compound is added auxiliary, so that the flotation collector solvent can greatly improve the collecting capacity of the medicament and improve the flotation recovery rate of tantalum-niobium; Meanwhile,the auxiliary collector solvent TB with lower cost is added, so that the dosage of the hydroxamic acid can be greatly reduced, and the cost of the flotation reagent for recovering the tantalum -niobium from the granitic pegmatite tantalum -niobium ore is greatly reduced.

The invention discloses a method for flotation of uranium minerals from volcanic rock type uranium ores. The method comprises the following steps: crushing volcanic rock type uranium ores, adding an acid, performing ore grinding, and carrying out size mixing treatment to obtain ore pulp; and adjusting the ore pulp through sodium carbonate, and by taking sodium silicate and sodium hexametaphosphateas inhibitors, hydroxamic acid compounds and fatty acid compounds as collecting agents and P507 as an auxiliary collecting agent, performing froth flotation under the action of a foaming agent to obtain uranium concentrate. According to the method, sodium silicate and sodium hexametaphosphate are used as the inhibitors, and hydroxamic acid and fatty acid collecting agents and the P507 auxiliary collecting agent are used in cooperation, so that the yield of the flotation concentrate is greatly reduced, the content of carbonate minerals in the flotation concentrate is reduced, and reagent consumption and hydrometallurgy ore treatment capacity in the subsequent leaching process can be reduced; and meanwhile, separation and enrichment of uranium minerals are achieved, the flotation concentrate yield is 19.06%, the uranium grade is 1.073%, and the recovery rate is 86.63%.

The invention provides a method for conducting leaching and flotation on ores in the same leaching and flotation cells. The method is characterized in that the ores are leached and floated in the same leaching and flotation cells; and the leaching and flotation cells are divided into two or more sections according to the chemical mixing, roughing, scavenging and fine selecting functions required by the flotation procedure in the procedure, and each section is provided with at least one leaching and flotation cell. The method has the beneficial effects that leaching and flotation are performed in the same cells, so that the leaching process, the flotation process, a leaching system, a flotation system, a leaching agent, a floating agent and leaching liquid are coordinated, and the recovery rate index and the concentrate quality index are increased. The leaching process and the flotation process are better combined. The procedure of the method is shorter than the procedure in which the ores are leached firstly and then floated or floated firstly and then leached in the prior art, equipment investment is saved, energy consumption is low, used labor is small, and production cost is low.

A beneficiation method for recycling bismuth from molybdenum selecting tailings is characterized by including the following steps that grout is mixed, in the step, concentrated sulfuric acid is added into the molybdenum selecting tailings; flotation roughing is performed, in the step, activator lead nitrate, collecting agent butyl xanthate and foaming agent terpenic oil are added to perform primary roughing to obtain roughed concentrate and roughed tailings; floating scavenging is performed, in the step, the butyl xanthate and the foaming agent terpenic oil are added in the primary scavenging of the roughed tailings, and the butyl xanthate and the foaming agent terpenic oil are added in the secondary scavenging or blank scavenging is performed to obtain scavenged concentrate and flotation tailings; flotation fine selection is performed, in the step, three to four times of blank fine selection is performed on the roughed concentrate to obtain bismuth concentrate and fine selected tailings; the fine selected tailings and the scavenged concentrate are made to return to the flotation roughing operation. According to the beneficiation method, bismuth is recycled from the molybdenum selecting tailings under the faintly acid condition in order to solve the problems that under the alkaline condition, activation of bismuthinite is poor and the recycling efficiency is low. According to the method, the recycling rate of the bismuth is larger than 85%, the Bi content in the bismuth concentrate is larger than 20%, and the method is applicable to molybdenum ore mines containing bismuth.

The invention discloses a double-ligand collecting agent-ether double thiourea or ethionine ester thiourea composite-radical compound and preparation and application thereof. The ether double thiourea or ethionine ester thiourea composite-radical compound shown as a formula (I) is used as a collecting agent for metal ore flotation, wherein R1 refers to an acyl radical with the general formula of R3-C(=O)- or an ester group with the general formula of R4O-C(=O)-, R3 and R4 respectively refer to C1-C8 alkyl radicals, R2 refers to hydrogen or methyl, X refers to O or NH, and n refers to 1-6. The compound with the structure shown as the formula (I) is used as the flotation collecting agent to efficiently recover value metal from nonferrous metal ores and precious metal ores. Flotation separation and extraction of the nonferrous metal ores and precious metal ores can be enhanced by the ether double thiourea or ethionine ester thiourea composite-radical compound. The melting point of the collecting agent can be lowered, dispersity of the collecting agent in aqueous solution is improved, adsorption of the collecting agent on the surfaces of ores is promoted, and flotation efficiency is improved while metal recovery rate is increased.

The invention discloses a mineral separation method of finely disseminated vanadium contained carbonaceous shale. The amount of roscoelite with the disseminated grain size less than 0.019mm is larger than 50% of the total amount of roscoelite in the finely disseminated vanadium contained carbonaceous shale. The mineral separation method of the finely disseminated vanadium contained carbonaceous shale includes following steps: (a) performing rough grinding on raw ore after being crushed so as to obtain roughly ground minerals; (b) performing screening classification on the roughly ground minerals, obtaining coarse grain minerals +0.074mm in size and fine grain minerals -0.074mm in size after the screening classification, and combining the coarse grain minerals after being ground twice with the fine grain minerals -0.074mm in size; (c) adding PH (power of hydrogen) regulators into the combined minerals, adjusting PH value to 5-6, adding gangue mineral inhibitor and vanadium mineral collecting agents into ore pulp for 6-12 times, and obtaining concentrated vanadium ore through segmenting rough concentration, vanadium concentration and vanadium scavenging after obtaining flotation pulp by adding flotation reagents once. The mineral separation method of the finely disseminated vanadium contained carbonaceous shale can perform mineral separation on the finely disseminated vanadium contained carbonaceous shale, can effectively improve a mineral separation index, and further can reduce mineral separation cost.