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CN-122006906-A - Carboxylic acid flotation collector and synthetic method and application thereof

CN122006906ACN 122006906 ACN122006906 ACN 122006906ACN-122006906-A

Abstract

The invention discloses a carboxylic acid flotation collector, a synthesis method and application thereof, wherein the application is that amino carboxylic acid compounds are used as mineral flotation collectors to be applied to the flotation recovery of valuable metals in oxidized minerals containing rare earth, cassiterite, copper oxide and the like, the two functional groups are connected with the hydrocarbon chain through the amino groups, so that the repulsive force between the ligands and the repulsive force between surrounding hydration layers are weakened, the hydrophobicity of the mineral surface is effectively increased, and the mineral flotation recovery performance can be remarkably improved. The non-ferrous metal and noble metal mineral collector is applied to the flotation separation of non-ferrous metal and noble metal ores, and is hopeful to realize the effective flotation separation recovery of non-ferrous metal and noble metal. Compared with the common flotation collector in the prior art (the flotation collector is suitable for strong acid conditions, the strong acid can cause corrosion to equipment and bring inconvenience to research), the enrichment and recovery of nonferrous metals such as rare earth, cassiterite, copper oxide and the like and noble metal minerals can be effectively improved under weak alkaline conditions.

Inventors

  • FAN HONGLI
  • LI ZHILONG
  • LI JIAXIANG
  • ZHANG CHANGLEI

Assignees

  • 内蒙古科技大学

Dates

Publication Date
20260512
Application Date
20260305

Claims (6)

  1. 1. A carboxylic acid flotation collector is characterized in that the carboxylic acid flotation collector is a naphthylamine carboxylic acid compound with a structure shown in a formula (1), (1) Wherein R 1 is alkyl, alkenyl, arene or alkoxy ether, and R 2 is alkyl, alkenyl, arene or alkoxy ether.
  2. 2. A carboxylic acid type flotation collector as claimed in claim 1 wherein R 1 is an alkane group of C 1 -C 8 , an alkene group of C 2 -C 10 , an aryl group of C 6 -C 12 , or an alkoxyether group of formula (2), and R 2 is an alkane group of C 1 -C 8 , an alkene group of C 2 -C 10 , an aryl group of C 6 -C 12 , or an alkoxyether group of formula (2); (2) Wherein R 3 、R 4 is ethylene or propylene, and n is 1-3.
  3. 3. A carboxylic acid type flotation collector as claimed in claim 2 wherein R 1 is methylene, ethylene, propylene, hexylene, heptylene, nonylene, allylene or alkenylene.
  4. 4. A method for synthesizing a carboxylic acid type flotation collector as claimed in any one of claims 1 to 3, wherein the synthetic route is as follows: S1, adding methanol and naphthylamine into a reaction container, stirring and dispersing uniformly, keeping the room temperature, slowly dropwise adding chloroalkyl/aryl carboxylic acid methyl ester into the reaction container, heating to 50 ℃, and reacting for 3 hours to obtain naphthylamine carboxylic acid methyl ester; S2, adding pure water into the mixture for hydrolysis, and then carrying out reduced pressure distillation on the product to obtain a carboxylic acid flotation collector; Or alternatively T1, uniformly stirring and dispersing naphthylamine, chloroalkyl/aromatic carboxylic acid and sodium hydroxide, heating to 25 ℃, and reacting for 3 hours to obtain sodium naphthylamine carboxylate; and T2, adding hydrochloric acid into the mixture, and then carrying out reduced pressure distillation on the product to obtain the carboxylic acid flotation collector.
  5. 5. Use of a carboxylic acid based flotation collector as claimed in any one of claims 1 to 3 in the flotation recovery of valuable metals from non-ferrous and precious metal minerals containing rare earths, cassiterite and copper oxide.
  6. 6. The use of a carboxylic acid based flotation collector as claimed in claim 5 wherein the non-ferrous and precious metal minerals contain one or more of cerium, tin, copper metals.

Description

Carboxylic acid flotation collector and synthetic method and application thereof Technical Field The invention belongs to the technical field of metal beneficiation, relates to a carboxylic acid flotation collector, a synthesis method and application thereof, and in particular relates to application of the carboxylic acid flotation collector in the recovery of valuable metals through the floatation of oxidized minerals. Background The carboxylic acid compound has biological activity. The carboxylic acid compound can be used as a medicine to prevent and treat plant diseases and insect pests, regulate plant growth and the like, and plays an irreplaceable role in guaranteeing global grain production. The active ingredients of carboxylic acids play a key role in pesticides, but the problems that must be overcome are their low solubility in water and poor bioavailability. The emulsified concentrated solution is used as an improved product of carboxylic acid compounds, is one of the most widely applied pesticide development agents at present, has the advantages of good storage stability, higher biological activity, convenient production and the like, but a large amount of organic solvents are discharged into the environment to pollute the environment and harm human health. The presence of fatty acids results in lower critical micelle concentrations than acyl chains and shows an order of magnitude decrease when the fatty acid alkyl chain length is increased by 6 carbon atoms. The carboxylic acid compound has a wetting effect. When a solid substance is in contact with a liquid substance, once an interface is formed, an adsorption phenomenon of surface energy occurs, the liquid substance spreads on the surface of the solid substance, the phenomenon that the liquid spreads on the surface of the solid becomes wet, and the ability of the liquid to spread on the surface of the solid becomes wettability of the liquid to the solid. Through simulation research, a benign surfactant (cocamidopropyl betaine) is mainly acted on a coal-water interface, so that the diffusion of water molecules at the coal interface can be promoted, and the wetting effect of the surfactant on coal is firstly reduced and then increased and then reduced along with the increase of the deterioration degree of the coal. During wetting, surfactant molecules interact, migrate and penetrate into the coal body. Coal dust can have serious influence on mine safety production and miner occupational safety and sanitation, so the research has important theoretical significance and practical value for improving mine safety and cleaning production. Studies have demonstrated wetting behavior of aqueous surfactant solutions on dichlorosilane treated silica sand. As a result, it was found that as the surfactant concentration increases, the wettability of the aqueous solution thereof increases, and that when the surfactant concentration is higher than CMC, the droplet penetration time decreases. Since the organic matters of the natural soil particles can cause the hydrophobicity of the soil, reduce the soil surface energy and the affinity to water, influence the germination of crops and cause the growth and development failure of the crops, the researches find that the hydrophobic sand provides ideas for modeling, design and application of the hydrophobic sand as a functional building material. The carboxylic acid compound belongs to an anion collector, has stable chelation, and can be used for flotation of tungsten, tin, copper, rare metal minerals and oxidized ores. The results of the study on the flotation performance and mechanism of the hydrozincite by the oleic acid show that the flotation effect of the hydrozincite by the oleic acid is optimal when the pH value is 10. Meanwhile, the contact angle measurement result shows that the contact angle between the hydrozincite and the oleic acid is increased to 105 degrees, and the interaction between the surface of the hydrozincite and the oleic acid is enhanced, so that the flotation separation of the hydrozincite is facilitated. The Zeta potential detection result shows that after the siderite and oleic acid act, the Zeta potential of the mineral surface is reduced. FT-IR spectra also confirm that the wurtzite forms zinc oleate salts (zinc oleate) on the ore surface after reaction with oleic acid. Through a pure mineral test, the action mechanism of sodium oleate in the process of the metapolar ore floatation is explored. Experimental results show that when the pH of the ore pulp is in the range of 4-8 and 11 and the molar concentration of sodium oleate is 3X 10 -4 mol/L, the floatation recovery rate of the heteropolar ore can be stably maintained at the level of about 80%. Further through Zeta potential and infrared spectrum analysis, sodium oleate is found to act with the surface of the calamine mainly through a chemical adsorption mode, and meanwhile, physical adsorption is carried out to a certain extent. The c