307results about How to "Strong harvesting ability" patented technology

The invention discloses an environmentally-friendly amine cationic collector and a using method thereof. The collector ZJ is ester group-containing quaternary ammonium salt cationic surfactant and has a plurality of alkyl groups, wherein an R alkyl group has 6 to 18 carbon atoms; an R1 alkyl group has 1 to 4 carbon atoms; the number of ester groups is 1 or two; and the number of the quaternary ammonium group is 1. The collector is obtained by esterification and quaternarization. As a hydrophobic chain has a carbonyl structure, the collector can hydrolyze easily into nonsurfactant fragments, and is a surfactant with high biodegradability, small toxicity and high performance. The collector is used in ore flotation for the first time and demonstrates high collecting capacity and selectivity.The collector forms fine and fragile foam that is low temperature resistant. The collector can be used under the condition that the pH value of ore pulp is 7 without corroding equipment. The preparation process of the collector is simple and easy in operation. And the collector is easy to biodegrade and is environmentally-friendly.

The invention discloses a diester-based 2-thiocyanate ester derivate applied in sulphide flotation, and the preparation method thereof. Diester-based 2-thiourea (the formula one) or diester-based 2-ethionine ester (the formula two) is applied as a novel collector for high efficiently recycling valuable sulfide minerals from metal sulphide ores by floatation. The collector has wide pH range in ore magma, thereby having strong ability to collect copper sulphide minerals such as chalcopyrite, etc., lead sulfide minerals or zinc sulfide minerals activated by copper ions, nickel sulfide minerals as well as noble metal minerals such as gold, silver, etc., and having good selectivity to gangue sulphide minerals such as iron pyrites, pyrrhotite, etc.

The invention relates to a high sulfur copper ore collecting agent, which is characterized by consisting of the following materials in part by weight: 40 to 50 parts of alkyl allyl thionocarbamate, 35 to 45 parts of sulfur nitrogen nitrile ester and 8 to 15 parts of alkyl xanthonic acid propionitrile ester. The collecting agent has double properties of collecting and foaming, high selectivity and high collecting capacity, can realize high-efficiency separation of copper and sulfur when the pH value is in a range from 7 to 10, can effectively improve the concentrate grade and the recovery rate, and has a wider application range.

The invention provides a method for roughing and tailings-discarding of fine rutile ore by multi-stage floatation, relating to the technique for roughing and tailings-discarding of fine rutile ore by multi-stage floatation and belonging to the technical field of mineral processing engineering. The method of the invention comprises the following steps: firstly, conducting the reverse floatation of rutile by using sodium oleate as a collector according to the characteristics that aluminum sulfate can inhibit the rutile and activate silicate minerals in varying degrees, so as to effectively deslime in the process of reverse floatation; and then, conducting the forward floatation of rutile by using lead nitrate (or lead acetate) as an activator of rutile and using sodium alkyl hydroxamate and benzyl arsonic acid (or styryl phosphonic acid) as a combined collector according to the characteristic that gangue minerals can be inhibited on a combined basis under the synergistic action of sodium fluorosilicate, carboxymethylcellulose and the residual aluminum sulfate in the ore pulp, briefly, the method of the invention can realize the roughing and tailings-discarding of fine rutile by the multi-stage floatation comprising the following steps: firstly, conducting the reverse floatation by inhibiting the rutile; and then, conducting the forward floatation by activating the rutile. The method of the invention has the advantages that the enrichment ratio and recovery rate of rutile are high, the tailings of rutile ore can be discarded thoroughly and the mineral processing cost of rutile can be greatly reduced.

The invention relates to a flotation agent for a copper mine and discloses a high-efficiency collecting agent for a high-sulfur copper mine. The collecting agent comprises the following materials in parts by weight: 30-40 parts of alkyl phosphorodithioic acid thioether ester, 25-35 parts of cyanoethyl diethyl dithionocarbamate, 10-20 parts of alkyl xanthic acid propionitrile ester and 10-15 parts of sulfur-nitrogen ester. The collecting agent for the high-sulfur copper mine has double functions of collecting and foaming, is good in selectivity and high in collecting ability, can realize high-efficiency separation of copper from sulfur in a low pH value (approximately 5) range, can effectively reduce the consumption of lime in the floatation process, can effectively increase the grade and recovery rate of concentrate, and has a wider application scope.

The invention provides mineral flotation collectors, namely sulfur ammonia ester thiourea composite-group compounds. The structural formula of the collectors is as follows, wherein R1 represents C1 to C8 alkyl, acyl groups of which the general formula is R3-C(=O)- or ester groups of which the general formula is R40-C(=O)-; R3 and R4 in the structural formula represent C1 to C8 alkyl respectively;and R2 represents C2 to C9 alkylene. Due to a plurality of coordination atoms and coordination groups in collector molecules, the sulfur ammonia ester thiourea composite-group compounds serving as flotation collectors can enhance the flotation, separation and extraction of nonferrous metal ores and precious metal ores and improve flotation efficiency, metal recovery rate and other characteristics.

The invention relates to an iron ore concentrating flotation drug and a preparation method thereof and in particular discloses an iron ore flotation anion / cation collector. In the invention, a main agent for preparing an anion collector comprises fatty acid and a derivative thereof, and a main agent for preparing a cation collector comprises organic amine and / or a quaternary ammonium salt; and auxiliary agents of the two collectors also comprise an organosilicon compound, chloralkane, fatty alcohol, an emulsifier and water, wherein the auxiliary agent of the anion collector also comprises hydrocarbon oil. The preparation method of the collectors comprises the following steps of: synthesizing the main agents through organic reactions; weighing other components according to certain weight parts; mixing according to a certain sequence; and uniformly stirring to prepare micro-emulsion homogeneous phase viscous liquid. The collectors have the advantages of strong collecting capacity, high anti-argillization capacity, low production cost, hard water resistance, stable property, small drug dosage, good selectivity, environmental protection, safety, low temperature adaptability, and the like.

The invention discloses a collector to float and collect ilmenite and preparing method, which comprises the following parts: oleic acid, powdered ore floatation agent, emulsifier and alkaline.

The invention discloses a method for preparing a fatty hydroximic acid collecting agent, which is characterized by comprising the following steps of: stirring alkyl hydroximic acid having more than or equal to 5 to 9 carbon atoms, fatty acid having 5 to 22 carbon atoms and mixed solvent oil having 4 to 30 carbon atoms for reaction at room temperature and then separating an oil phase from a water phase, wherein the oil phase is the fatty hydroximic acid collecting agent. The collecting agent of the invention has good selectivity, high collectivity, proper foaming characteristic and easy dissolution in water. Rare earth metal concentrate is obtained by the following steps of: grinding crude rare earth metal oxide ore; adding sodium hydroxide, water glass, sodium fluorosilicate and sodium sulphide into the grinded ore; adding the fatty hydroximic acid collecting agent of the invention into the mixture; then adding modified starch into the mixture; and finally performing flotation. The collecting agent of the invention is a flotation collecting agent for the rare earth metal oxide which is suitable for industrial production and has simple process and high separation efficiency.

The invention discloses a carbonate phophorite reverse flotation combined collecting agent and a preparation method thereof. The collecting agent is a compound anion collecting agent and is formed by mixing basic substance with water, wherein the basic substance mainly comprises the following components in parts by weight: 0.2-0.5 part of higher fatty acid sulfated soap containing unsaturated fatty acid, 0.5-0.8 part of higher fatty acid saponified matter with the fatty acid content of being not more than 50% and 0.01-0.1 part of foaming agent, and the ratio of the basic substance to the water in parts by weight is 1: (20-70). The combined collecting agent has the advantages of strong collecting capability, high selectivity, low dosage, low temperature resistance and the like and is applied to carbonate phophorite reverse flotation with the P2O5 grade of being 25-26%, the P2O5 grade of the obtained concentrate is more than 34%, MgO content is less than 1.2%, and P2O5 recovery rate of the concentrate is more than 90%. The invention has the characteristics of simple preparation process, easy operation, high concentrate P2O5 recovery rate, low MgO content in the concentrate and low flotation cost and is applicable to flotation production of carbonate phophorite and various phosphate ores.

The invention provides a cellophane direct flotation collector. The collophanite direct flotation collector comprises, by weight, 75 parts to 80 parts of fatty acid soap, 10 parts to 15 parts of fatty acid monoethanolamine and 3 parts to 8 parts of non-ionic surface active agents, and the non-ionic surface active agents are selected from one or more of octylphenol ethoxylate, nonylphenol polyeothoxylates and fatty alcohol polyoxyethylene ether. The invention further discloses a preparation method of the cellophane direct flotation collector, illegal cooking oil serves as raw materials, and the cellophane direct flotation collector is obtained after deodorization and decoloring. The collophanite direct flotation collector is good in selectivity and high in collecting capacity. According to the method, the illegal cooking oil harmful to the environment serves as the raw materials, waste is turned into wealth, the carboxylic acid derivative collector containing hydroxyl and amide polar groups is prepared, and the collector has great actual significance in development and utilization of medium and low grade collophanite.

The invention relates to a beneficiation method for improving the ore dressing recovery percentage of copper sulfide ore hard to dispose. By applying the method, flotation separation of copper sulfide mineral from hydrophobic silicate gangue talc and ferric sulfide mineral pyrite can be realized, and the preparing technical indexes of copper sulfide mineral can be improved. The method comprises the operations of ore grinding, size mixing, rougher flotation, scavenging and selection. According to the invention, a combined inhibitor TYZ01 has a selective inhibiting effect on talc and pyrite and cannot affect the flotation of copper pyrites, and a combined collecting agent TBS02 has strong collecting capability on copper pyrites; by using the two combined reagents, efficient utilization of copper sulfide mineral containing hydrophobic silicate gang and pyrite can be realized; proved by practices, by using the beneficiation method disclosed by the invention, good selection indexes can be obtained; and the adopted reagents, calcium lignosulfonate and Arabic gum, are organic macromolecule reagents, thus being easy to degrade and having no pollution to the environment.

The invention discloses an alpha-hydroxy unsaturated alkylphosphonic acid compound as well as a preparation method and application of the alpha-hydroxy unsaturated alkylphosphonic acid compound. The alpha-hydroxy unsaturated alkylphosphonic acid compound has the structural formula I as shown in the specification. The preparation method comprises the steps: subjecting 2-ethyl-2-hexenal and hypophosphorous acid or hypophosphite to addition reaction in the existence of an acid catalyst to generate 1-hydroxyl-2-ethyl-2-hexenyl-1-phosphorous acid; subjecting 1-hydroxyl-2-ethyl-2-hexenyl-1-phosphorous acid and an oxidizing agent to reaction to generate 1-hydroxyl-2-ethyl-2-hexenyl-1-phosphonic acid. 30-600g / t of 1-hydroxyl-2-ethyl-2-hexenyl-1-phosphonic acid is used as a flotation collector for bauxite, ilmenite, rutile, scheelite, wolframite, rare earth ores, tin ores, fluorite ores or lithium ores, and the pH value of a flotation solution is controlled at 4-12, so that a target ore and a gangue mineral can be effectively separated.

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 collecting agent for floatation of copper sulfide ore is prepared by using thionocarbamate, diethylthionitrogen ester, 730A, dialkyl phosphorodithioate and propenyl butyl sulfonate according to the ratio of 0.6-0:0-0.06:0.2-0.1:0.1: 0.1-0.2, and its preparation method includes the following steps: respectively filtering thionocarbamate and 730A; under the condition of normal temp. and normal pressure slowly adding diethylthionitrogen ester while stirring, uniformly stirring them, then adding it and propenyl butyl sulfonate into dialkyl phosphorodithioate, stirring for 1 hr. then standing still for 2 hr. and removing precipitate so as to obtain the invented collecting agent with good selectivity and strong collecting power, and it can effectively separate copper-sulfur, copper-in and copper-arsenic, etc.

Disclosed are a composite collector for low-and-medium-temperature phosphate flotation and a preparation method thereof. The composite collector is composed of 100 parts of carboxylic acid collector, 50-100 parts of hydrocarbon type oil, 1-10 parts of non-ionic surface active agent, 1-10 parts of anionic surface active agent and 80-200 parts of water, wherein the carboxylic acid collector serves as the main collector, the hydrocarbon type oil serves as the auxiliary collector, the non-ionic surface active agent serves as the synergist, and the anionic surface active agent serves as the emulsifier. The preparation method includes steps of uniformly mixing and stirring the components according to the proportion in the speed of 300-1500rad / min at the temperature ranging from 40DEG C to 80 DEG C to obtain the composite collector for low-and-medium temperature phosphate flotation. When in use of the composite collector, the composite collector is added into a pulp mixing barrel to be mixed with pulp sufficiently according to dosage directly, so that floatation can be carried out in a floatation trough at the normal temperature and the operation of heating to pulp is omitted. The composite collector has the advantages that better low-and-medium-temperature flotation effect can be achieved, bubbles generated by the composite collector are favorable for concentrate deposition, the chemical agent usage is small, raw materials for the composite collector are wide in sources, and the composite collector is moderate in price.

The invention discloses a collecting agent for low-grade refractory gold ores. The collecting agent comprises the following materials by weight: 45-55 parts of cyanoethyl diethyl dithionocarbamate, 30-40 parts of allyl alkyl xanthate, and 10-15 parts of liquid ammonium dibutyl dithiophosphate. The collecting agent has dual attributes, such as collecting and bubbling, the selectivity is good, the collecting capacity is strong, and the concentrate grade and the recovery rate can be effectively improved in a pH value range of from 8 to 8.5, thereby being the high-efficiency collecting agent for low-grade refractory gold ores.

The invention relates to a spodumene ore processing method and belongs to the field of ore production. The spodumene ore processing method aims at solving the technical problem of providing an ore processing method for spodumene ore. The spodumene ore processing method is formed by steps of ore grinding, roughing for two times, scavenging and selecting for two times and finally the spodumene concentrate is obtained. The spodumene ore processing method has the advantages of being simple in technological process, good in used medicament selectivity, strong in collecting capability and low in medicament amount, greatly reducing processing costs and enabling obtained spodumene concentrate level to be more than 6 % and the recovery rate to be more than 85 %.

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 invention relates to a reverse flotation collector of carbonate phosphate ores and a preparation method thereof. The collector is essentially composed of the following raw materials by weight proportion: 0.5-0.8 part of acidified raw bran oil, 0.5-0.2 part of acidified soy oil, 0.01-0.1 part of foamer which takes semi-finished products after saponification as benchmark. The preparation method of the collector is that: the mixture of the acidified raw bran oil and the acidified soy oil is taken as raw material, which is heated to 80-100 DEG C, added with soda lye and stirred for saponification, the pH value is controlled between 7 to 8, and then the foamer is added into the mixture to obtain finished products. The collector has the advantages of strong collecting capability, high selectivity, small dosage and low temperature resistance, etc., and is suitable for the ore dressing production of carbonate phosphate ores and various phosphorus ores; even when the grade of carbonate phosphate ores is reduced to 17%, the quality of the produced phosphate concentrate still can meet qualification requirements; in addition, the invention has simple preparation technique, easy operation, high recover rate of ore concentrate, low content of MgO in ore concentrate and low ore dressing cost.

The invention relates to a composite beneficiation reagent for extracting vanadium from stone coal. The composite beneficiation reagent for extracting the vanadium from the stone coal is characterized in that the composite beneficiation reagent is composed of a component A, a component B, a component C, a component D and water, the component A is kerosene and / or diesel oil, the component B is quaternary ammonium salt class matter and / or aliphatic amine hydrochloride class matter, the component C is any one or more of alcohol ranging from C4 to C8, 4-methyl-cyclohexyl-methanol, MIBC, terpenic oil, methyl triisopropoxy silane, and the component D is any one or more of alkyl-sulfonate ranging from C8 to C12, OP-10 and Tween-60. The composite beneficiation reagent for extracting the vanadium from the stone coal is prepared by a plurality of components according to a certain proportion and a rule, combination of the components of the reagent can be adjusted according to different mineral properties so that a series of flotation reagents can be prepared, and thebest use effect is achieved.

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 discloses a beneficiation method for silicate and carbonate type fluorite ores, and belongs to the technical field of non-metal ore beneficiation. The problems of low recovery rate and high impurity content of concentrate products in the conventional beneficiation method are solved. The method comprises the following steps of ore grinding; roughing, that is, a gangue inhibitor is a combination of T20 and acidic soluble glass, the collecting agent is Y-8, the gangue inhibitor T20 comprises polyaspartic acid, aluminum sulfate and hydroxyethylidene-1,1-diphosphonic acid in a mass ratio of 3-6: 4: 0.5-1, and the collecting agent Y-8 comprises sodium oleate, 4-epoxytetradecanoic acid and octylphenylpolyethylene glycol in the mass ratio is 6-7: 2-3: 1; scavenging operation, that is, a collecting agent Y-8 is added; regrinding rough concentrate; concentration, that is, an inhibitor T20 and acidic soluble glass are adopted, and Y-8 is adopted as the collecting agent. Under the condition of low temperature, the impurity content in the concentrate product can be effectively reduced, and the fluorite concentrate grade is improved.

The invention discloses a two-stage flotation process for low-grade mixed potassium salt. The process comprises the following steps: (1) grinding low-grade mixed potassium salt until content of the salt with size fraction of -0.15mm is no less than 64.90% by mass; (2) transferring ore pulp obtained from the step (1) to a flotation machine for the first stage of flotation; (3) adding an anionic collector to coarse ore pulp obtained from the step (2) for the second stage of flotation; (4) totally combining potassium chloride concentrate obtained from the step (2) with the second stage of flotation concentrate obtained from the step (3), adding fresh water at a mass ratio of the concentrate to the fresh water of 1: (0.65-0.80), stirring at normal temperature and conducting a conversion reaction fore 1-2h, filtering and drying to obtain a finished potassium sulfate fertilizer product. The process disclosed by the invention has such advantages as simple process, low energy consumption, easy implementation of operation and high K<+> recovery rate, and is suitable for recovering a potassium resource from some low-grade mixed potassium salt complex in potassium mineral composition through flotation.

The invention provides an ore dressing combination reagent for rutile. The reagent comprises a collecting agent, the collecting agent is phenyl amino acid, a pH value modulation agent, an activating agent, an inhibitor and a foaming agent are further included, and through the technical scheme, the reagent has the beneficial effects that the amino acid rutile collecting agent is adopted, and is poisonless and harmless, green and environment-friendly. The phenyl amino acid is adopted to serve as the collecting agent, the collecting capacity and the selecting capacity of rutile are high, and efficient separation of rutile and gangue mineral in the actual ore flotation can be achieved. The phenyl amino acid is adopted as the collecting agent, in combination with the pH value modulation agent, the activating agent, the inhibitor and the foaming agent, the rutile is subject to ore dressing, the proper matching is adopted, concentrate products with high TiO2 grade and the high recycling rate can be obtained, and the ore dressing effect is far better than that of the prior art.

The invention discloses a flotation collector for silicate minerals. The flotation collector is characterized in that R1 and R2 in the formula represent hydroxyls with 8 to 18 carbon atoms; and R3 represents sub-hydroxyl with 2 to 6 carbon atoms. The flotation collector is high in collection capacity and selectivity on the silicate minerals; and foams generated in flotation are brittle, so that the foams are easily removed.

The invention discloses an ilmenite chelation collecting agent, and relates to a beneficiation reagent in the mineral processing process, in particular to an ilmenite flotation collecting agent. The ilmenite chelation collecting agent is characterized in that the ilmenite chelation collecting agent is prepared through compounding of hydroxy fatty acid, alkane sulfonate, carboxylic hydroximic acid, a surface active agent and a foaming agent and through saponification synthesis. The ilmenite chelation collecting agent is suitable for flotation of low-grade ilmenite, and high-grade rough titanium concentrates with the high recovery rate can be obtained. In the chelation collecting agent, the carboxylic hydroximic acid is obtained through chemical modification and is mixed and compounded with the hydroxy fatty acid, the alkane sulfonate, the surface active agent and the foaming agent, the solubleness, the dispersibility and the selectivity of the collecting agent can be greatly improved through the saponification reaction, and therefore flotation of the low-grade ilmenite is achieved. In addition, the collecting agent is high in collecting force, good in selectivity and environment-friendly and has good market popularization value.

The invention discloses a formula and a preparation method of a phosphorite reverse flotation deoxidization magnesium collecting agent which is simple in process and favorable in using effect. In a process of preparing a mixed material, the input ratios of the materials are as follows: the input ratio of oleic acid is 50-60%, the input ratio of stearic acid is 40-30%, and the input ratio of C5-C9 fatty acid is 10%; the input ratios of the materials in a process of heating and saponifying are as follows: the input ratio of the mixed material is 37.5%, the input ratio of water is 56.5% and the input ratio of solid natrium hyelroxide is 6%; in a compounding process of mixing fatty acid and a surfactant, the input ratios of the materials are as follows: the input ratio of the mixed material is 86.5-90.5%, the input ratio of terpilenol is 3-5%, the input ratio of lauric acid polyoxyethylene ether sulfonate is 3-5%, the input ratio of a TX emulgator is 1.5%, and the input ratio of sodium carbonate is 2%. The method is high in synthesis efficiency, low in equipment requirement, free of pollution and free of emission; the method serves as a clean, environment-friendly and efficient production process; the prepared product is high in water solubility, high in mobility, excellent in dispersion effect and stable and reliable in performance, can be simultaneously adaptive to high-concentration and fine-fraction flotation; the phosphorite reverse flotation deoxidization magnesium collecting agent serves as a beneficiation reagent with high competitiveness and good application prospect.

The invention provides a composite collecting agent for sulphide ore and a preparing method thereof. The composite collecting agent comprises 10-15% of dialkyl monothiophosphate, 15-30% of alkyl monothioformate, 15-40% of dialkyl dithiophosphate, 5-10% of cosolvent, 13-15% of dialkyl dithiocarbamate and 10-20% of water. The composite collecting agent has the advantages that in use, the usage amount is small, cost is low, and the agents are added conveniently; the recovery indexes of metallic copper, gold, silver and the like are improved well; the composite collecting agent has composite action, collecting performance and foaming characteristic in the flotation process, also has the good selectivity and a superior collecting function for useful metal in clay-contained minerals, and can comprehensively recycle the useful metal minerals from complex minerals.

The invention relates to a floating medical agent prepared from food and beverage waste oil and grease and application thereof. The floating medical agent is mainly prepared from the following ingredients through being metered by weight parts: 1 to 1.5 parts of negative ion collecting agents prepared from food and beverage waste oil and grease, 2 parts of NaOH, 0.67 to 1 part of starch and 1 part of CaO. The floating medical agent has the preparation steps of saponification, salting out and baking, wherein during the saponification reaction, the food and beverage waste oil and grease is placed into a container to carry out saponification reaction with NaOH through water bath heating, the ratio of the consumption of the alkali liquor to the mass of the waste oil and grease is 1 / (1.5 to 2.5), after the saponification reaction is completed, excessive NaCl is taken to be prepared into a saturated solution to be added into saponification products for carrying out salting out, products of the upper layer are taken out after the still standing to be baked, and the floating medical agent is obtained. The floating medical agent prepared by the invention has the advantages of strong collecting capability, good selectivity, wide raw material sources and low medical agent cost, realizes the recovery and the utilization of the waste oil and grease, and has good social benefits, environment benefits and economic benefits.