500 results about "Mineral flotation" patented technology

The present invention relates to compositions useful for the suppression of fugitive dust emissions and methods of suppressing dust emissions by application of an aqueous solution comprising a surfactant, wetting agent and an acrylic copolymer. The compositions of the invention are effective in wetting, penetrating and improving particle cohesion and reducing water evaporation. They can also be used as a knockdown agent for airborne dust and for minimising soil and dust erosion, blowing and loss from roads and bulk solids, mineral flotation processes, waste management applications and as a binding agent.

The invention relates to a mineral separation process, in particular to a mineral separation process of complex fluorite difficult to separate. The process includes utilizing sodium hydroxide to treat oleic acid to obtain modified oleic acid, utilizing concentrated sulfuric acid to treat water glass and obtain acidized water glass, conducting ore grinding on fluorite ores according to the prior art, conducting coarse separation under the temperature of 25-30 DEG C, then conducting seven times fine separation on coarse separation foams and adding the acidized water glass into the foams in the first four times of fine separation to prepare fluorite concentrate. The process can improve separation efficiency of calcium fluoride, silica and calcite, improves quality and recycle rate of the fluorite ores, obtains high quality acid grade fluorite ores and resolves the problem of difficulty in separation of complex fluorite flotation, is remarkable in application effect in separation of the complex fluorite difficult to separate, has repeatability, simultaneously reduces requirements of fluorite mineral flotation for ore temperature, reduces energy consumption, reduces usage of collectingagent oleic acid, reduces environment pollution caused by exhaust of a large amount of waste water containing oleic acid and has better economical and social benefits.

The invention discloses an on-line detection device and method of mineral flotation froth flow velocity on the basis of three-dimensional visual information. Kinect is adopted to obtain the color image and the depth information of forth to form the three-dimensional visual information of the forth. A current frame of image and a previous frame of image are subjected to characteristic point extraction and matching in an embedded heterogeneous multi-core processor, and a three-dimensional space coordinate of the image characteristic point is calculated by the pixel coordinate information and the depth information of the characteristic point and a pinhole projection imaging model. The three-dimensional space coordinate and the image acquisition rates of the matched characteristic points of two frames of images are used for calculating a movement rate, i.e., the froth flow velocity of the froth on three dimensionalities. The real-time on-line non-contact detection of the flotation cell froth flow velocity is realized, and the on-line detection device has the characteristics of being small in volume, high in mobility, low in power consumption, low in cost, high in detection speed and high in reliability, is especially suitable for the real-time on-line measurement of the field froth flow velocity index of mineral flotation, and is favorable for realizing the automatic monitoring of a flotation process so as to improve mineral separation efficiency.

The present invention is collecting agent for mineral floating and its preparation process. The cationic collecting agent contains C8-C18 alkyl radicals, 1-4 amido radicals and ether radicals. Its preparation process includes the following steps: the heating reaction between fatty alcohol and sodium or potassium hydroxide in anhydrous condition to prepare sodium or potassium alcoholate, catalyzing the polymerization of acrylonitrile and fatty alcohol with the sodium or potassium alcoholate to produce ether nitrile, hydrogenating ether nitrile in the action of amorphous metal catalyst and cooling to obtain an intermediate, and repeated polymerizing the intermediate and acrylonitrile and hydrogenating to replace nitrile group with amido group. The collecting agent has powerful collecting capacity, high collecting selectivity, low temperature tolerance, high biodegradability and other advantages.

The present invention relates to a composite inhibitor for inhibiting floatation, belonging to a beneficiation inhibitor. The composite inhibitor is made up by using three components of CaO, Na2SO3.7H2O and sodium humate through a certain preparation process, in which the CaO is regulating agent and Na2SO3.7H2O and sodium humate are inhibitors. The composite inhibitor has the advantages in that: the separation effect of copper and arsenic is greatly raised, and the recovery utilization rate is very notable. During the separation of copper and arsenic, the composite inhibitor allows the copper ion generated by secondary copper sulphide mineral to have the effect of activity elimination and to be capable of improving the separation effect of copper and arsenic. By adopting the composite inhibitor of the separation of copper and arsenic, the valuable copper with 53.10% of recovery can be obtained in the separating flotation of arsenic, copper and silver mine; and the corporate income is raised, and the significance for improving economic benefit of the mine is greatly enhanced.

The invention belongs to the field of efficient surfactant, in particular relates to an alkyl-blocked alkylphenol polyoxyethylene ether benzene sulfonate surfactant and preparation method and application thereof. The surfactant contains nonionic hydrophilic group polyoxyethylene and negative ion hydrophilic group sulfonate, the special molecular structure determines that the surfactant has good water-solubility, lower critical micelle concentration, excellent capability of reducing surface tension/interfacial tension, efficient foaming and foam stabilizing capability and outstanding temperature endurance and salt endurance, has good application prospect in a plurality of fields of pesticides, mineral flotation, tertiary oil recovery, and the like, and can be used as an effective oil displacement agent in tertiary oil recovery. The surfactant has the structure.

The invention relates to a mineral floatation column, in particular to a columnar floatation device for separating minerals in a liquid medium. The columnar floatation device is characterized by structurally comprising a floatation column body, an ultrasonic generating device and a mounting base, wherein the mounting base is fixedly connected to a circular through-hole formed on the lateral wall of the floatation column body; and the ultrasonic generating device is mounted on the mounting base. By taking the unique advantages of the existing floatation column and introducing the ultrasonic technology into the floatation column, materials passing through the floatation column are subject to hydrodynamic force, gravity force, surface chemical force, interaction force among particles, and cavitation and ultrasonic direct-inflow effects generated by ultrasonic waves, so that the invention can strengthen the separation process of materials, extend the size fraction range for the materials of the floatation column to select, stimulate the recycling of coarse-particle materials and improve the separation precision, and meanwhile, the invention can improve the recovery rate of operations and reduce the cost of separation operations. The floatation column is applicable to various separation fields, such as mineral separation, wastewater treatment, petroleum, chemical engineering, environmental protection and the like.

The invention aims at floatation separation of arsenic from sulfur in arsenic-containing pyrites. The floatation separation comprises the following steps of: adjusting an ore pulp to keep the pH value of the pulp between 9 and 10; adjusting the potential of the ore pulp to between 350 and 380 millivolts by adding oxidant medicaments of sodium persulfate and calcium hypochlorite; introducing air to increase oxygen content in the ore pulp; and stabilize electrochemical conditions of mineral floatation. During the floatation separation of the pyrites from the arsenopyrites, the potential of the ore pulp is stabilized by adding the oxidant medicaments of sodium persulfate and calcium hypochlorite; the arsenopyrite is suppressed by using a new collector of dianilino dithiophosphoric acid, and regulators of sodium silicate and sodium humate according to a principle of an electrochemical floatation process to make the pyrites such as arsenopyrites, iron pyrites, pyrrhotites and the like acted with a medicament selectively in the subsequent floatation process; and the floatation separation of the pyrites from the arsenopyrites is performed so as to form a sulfur concentrate with low arsenic content.

The invention discloses a preparation method and application of a non-molybdenum sulfide mineral flotation and separation inhibitor. The preparation method for the flotation and separation inhibitor comprises the step of enabling phosphorus pentasulfide and alkaline compounds to react with water-soluble macromolecules, and thus the flotation and separation inhibitor can be obtained. According to the preparation method for the non-molybdenum sulfide mineral flotation and separation inhibitor, operation is easy, the process conditions are mild, the raw material cost is low, and the industrial production requirements are met; and moreover, the prepared product directly serves as the non-molybdenum sulfide mineral inhibitor applied to flotation and separation of molybdenum sulfide minerals and non-molybdenum sulfide minerals, the molybdenum sulfide minerals and the non-molybdenum sulfide minerals can be effectively separated, the grade of molybdenum concentrates is improved, and the flotation and separation inhibitor is particularly suitable for flotation and separation of molybdenite, copper sulfide ore, galena, pyrite, jamesonite, arsenopyrite, bismuth sulfide ore and the like.

The invention discloses a multifunctional ore dressing chemical, and a using technique thereof. The chemical can be widely used for treating various ore resources. A synthesis method of the multifunctional ore dressing chemical comprises the following steps: preparing colloidal solution of an inorganic oxide and a hydroxide; dissolving an organic monomer in the colloidal solution of the inorganicoxide and the hydroxide; adding an initiator into the solution to complete organic synthesis a reaction kettle. The obtained multifunctional ore dressing chemical which has a selective flocculation function is added into the flotation pulp to help ore separation in ore flotation and solid-liquid separation in tailing processing. The using technique comprises: the flotation and tailing processing.The multifunctional ore dressing chemical also can be used in tailing processing alone. The multifunctional ore dressing chemical can improve production efficiency, improve mine environmental protection, greatly improve the economic benefits of the mine, improve the return water recovery effect and reduce mine environment pollution.

The invention discloses a leaching residue grading and series flotation method for complex copper mine. The method comprises the working procedures of leaching residue grading, fine flotation and coarse flotation. Particularly, the leaching residue grading comprises the step of dividing leaching residues for hydrometallurgy of copper into fine-grained mine and coarse-grained mine according to a sieve of 60-100 meshes. The fine flotation comprises the step of carrying out series roughing selection, scavenging and fine selection for two to three times on the fine-grained mine to obtain concentrate 1, wherein the fine-grained mine is obtained through grading. The coarse flotation comprises the steps of grinding the coarse-grained mine obtained through grading until the fineness reaches 80% of less than 200 meshes, arranging and connecting the coarse-grained mine in series, carrying out roughing selection for one to two times, scavenging and fine selection for two to three times on mine discharge series to obtain concentrate 2. According to the method, the leaching residues for hydrometallurgy of the low-grade and complex mine with oxygen and sulfur mixed are graded firstly, then the different series flotation and tailing reusing processes are adopted respectively, the mineral recovery rate can be improved to 75-85% of comprehensive recovery from 30-50% of single wet dump leaching, the grade of the leaching residues is reduced to 0.2% or even lower from 0.5% of pre-flotation, the effect of comprehensive recovery is obvious, and meanwhile the pollution to environment by the leaching residues is reduced.

The invention relates to a rare earth ore direct flotation collecting agent and a preparation method and application thereof. The collecting agent is formed by mixing octanohydroxamic acid, naphthalene formohydroxamic acid, salicyhydroxamic acid, fatty acid with the iodine value of 90-120 and Span-80. The prepared collecting agent is high in collecting capacity, small in use quantity, resistant to low temperature, low in cost and small in pollution, and can be used for mineral flotation of bastnaesite or xenotime or monazite.

The invention relates to a beneficiation method for low-grade copper sulphide ore. The method comprises the technology steps and conditions that ore grinding is carried out, and water, lime and butylamine dithiophosphate are added; flash flotation is carried out, the pH value is adjusted, and MIBC is added; roughing I and roughing II are carried out, and modified butylamine dithiophosphate and MIBC are added in flash flotation tailings; ore grinding is carried out through roughing concentrate obtained through two times of roughing; sifting I is carried out, lime is added in re-ground ore grain powder B pulp to adjust the pH value, and water glass is added; sifting II is carried out, and no additive is added; scavenging I is carried out, and sodium sulphide, butylamine dithiophosphate and MIBC are added in roughing II tailings; and scavenging II is carried out, and butylamine dithiophosphate and MIBC are added in scavenging I tailings. The beneficiation method has the beneficial effects that the flotation efficiency of the objective mineral is high, the mineral which is good in floatability and is separated in a monomer manner is preferably recycled, the phenomena of enrichment and excessive crushing of associated noble metal in a loop can be avoided, the comprehensive mineral recovery rate is high, and the flotation pulp environment is good; and the rough ore and concentrate yield is high, the separated mineral is preferably recycled, copper mineral and connected growing bodies hard to separate are effectively recycled, and the associated noble metal is efficiently recovered. The beneficiation method is applicable for processing noble metal containing copper sulphide ore not even in dissemination size.

The invention relates to an amino methyl xanthogenic acid cyanogen ethyl ester compound and a preparation method thereof; and the compound can serve as a metallic mineral flotation collector to be used for recycling sulphide ore or oxidized ore containing metals in foam flotation. The aim of the invention is to provide the amino methyl xanthogenic acid cyanogen ethyl ester compound and the preparation method thereof. The other aim of the invention is to provide the amino methyl xanthogenic acid cyanogen ethyl ester to serve as a new sulfide mineral or oxidized mineral flotation collector and an application method of the flotation collector so as to enrich the variety of the xanthogenic acid cyanogen methyl ester collector and enlarge the range of selection of a flotation agent. The amino mthyl xanthogenic acid cyanogen ethyl ester compound synthesized by the method is generally of oily liquid, has special smell and little solubility and is slightly lower than water in specific gravity; the product is not needed to be purified and separated; and the mixed product containing impurities has better ore dressing and collecting performance for the metallic minerals. The preparation process is simple, efficient and economic; and the crude product can be used as the flotation collector; and the conversion yield of the crude product is in the range of 65%-100%.

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 provides an application method of an aliphatics bis-hydroximic acid compound to mineral flotation, and belongs to the technical field of mineral flotation. The aliphatics bis-hydroximic acid compound is expressed as the formula I: FORMULA; and in the formula I, R is alkylene containing 1-20 carbon atoms. The aliphatics bis-hydroximic acid compound serves as a collecting agent for flotation of scheelite, wolframite, scheelite and wolframite mixed ore, tin ore and rare earth ore, can enhance a chelating effect on metal oxidation minerals, promotes absorption of the collecting agent on the surfaces of the minerals, has such characteristics as high collecting capacity, high selectivity and low ore ton quantity, and is suitable for treating difficult-selected fine grain ore.

The invention discloses a nonferrous metal mineral flotation collector with a sulfydryl-hydroxamic acidyl structure and a preparation method and application thereof. The flotation collector has both sulfydryl groups and hydroxamic acidyl groups; by taking the flotation collector as a nonferrous metal mineral collector, nonferrous metal minerals in nonferrous metal ores can be efficiently recovered through flotation separation, and therefore the goal that minerals in the form of sulfide and minerals in the form of oxide in the nonferrous metal ores are recovered simultaneously by a single flotation reagent is achieved. A synergistic effect on chelate metal ions exists between the sulfydryl groups and hydroxamic acidyl groups, so adsorption on metal ions on the interfaces of sulfide minerals and the interfaces of oxide minerals in nonferrous metals can be enhanced, and the recovery rate of nonferrous metal minerals in the nonferrous metal ores is greatly increased; the nonferrous metal mineral flotation collector is especially suitable for the metal recovery of mixed minerals containing both the sulfide minerals and the oxide minerals of the nonferrous metals; the recovery process of the nonferrous metals is simple, efficient and workable, and the industrial application requirement is met.

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 provides methods and compositions for improving a froth flotation type separation. The method uses a microemulsion to improve the effectiveness of a collector. The improvement allows for low dosages of collector to work as well as much greater amounts of non-microemulsified collector.

The invention provides a column type separating device and method for centrifugal pre-flotation. The column type separating device and method are suitable for being used during mineral flotation. The column type separating device comprises a column type flotation device, the top of the column type flotation device is provided with an embedded centrifugal pre-flotation device comprising a centrifugal pre-flotation device groove, a centrifugal mineral laden bubble generator and a bubble collecting groove, a centrifugal impeller of the centrifugal pre-flotation device rotates in an impeller cavity to form negative pressure, flotation fed material and air enter the impeller cavity through a feeding pipe and an air suction pipe respectively, the flotation fed material is cut and smashed by the centrifugal impeller at high speed, the air is dispersed into bubbles, and the flotation fed material and the air are completely mixed in the impeller cavity, dispersed into the centrifugal pre-flotation device groove, and mixed and selected in a flotation mode again. Bubble products separated by the centrifugal pre-flotation device and bubble products separated by flotation columns are combined to serve as concentrate products, and pulp in the centrifugal pre-flotation device groove is fed into the flotation columns through bottom guide pipes for secondary separation. The column type separating device and method are high in flotation efficiency and good in stability.

The invention relates to amino ethyl xanthogenic acid cyanogen ethyl ester compound and a preparation method thereof. The compound serves as a metallic mineral flotation collector to be used for recycling sulphide ore or oxidized ore containing metals in foam flotation. The aim of the invention is to provide the amino ethyl xanthogenic acid cyanogen ethyl ester compound and the preparation method thereof. The other aim of the invention is to provide the amino ethyl xanthogenic acid cyanogen ethyl ester to serve as a new sulfide mineral or oxidized mineral flotation collector and an application method of the flotation collector so as to enrich the variety of the xanthogenic acid cyanogen ethyl ester collector and enlarge the range of selection of a flotation agent. The amino ethyl xanthogenic acid cyanogen ethyl ester compound synthesized by the method is generally of oily liquid, has special smell and little solubility and is slightly lower than water in specific gravity; the product is not needed to be purified and separated, is an effective collector for natural copper, gold, nickel, copper, lead, zinc and other sulfides and particularly can be used as the collector for nickel ores when a copper and nickel ores are floated. The preparation process is simple, efficient and economic; and the crude product can be used as the flotation collector; and the conversion yield of the crude product is in the range of 65%-100%.

The invention relates to a non-ferrous metal mineral flotation agent which comprises a collecting agent, a foaming agent and a regulating agent, wherein the collecting agent is oily sludge comprising kerosene and/or diesel oil and/or transformer oil and/or heavy oil and/or crude oil. The foaming agent is pine wine oil or hexyl alcohol or n-caprylic alcohol or octanol, and the regulating agent is lime and/or water glass. Compared with the prior art, oily sludge produced in the processes of production, transportation and storage of an oil field, an oil refinery and the like is in resource utilization as the collecting agent of the flotation agent, and an agent produced under the coordinating function of the collecting agent, the foaming agent and the regulating agent forms to be the novel flotation agent used for mineral processing production of non-ferrous metal, using amount of various product oil is greatly saved, and agent cost of the flotation agent for flotation and enrichment production of the non-ferrous metal is reduced.