41 results about "Copper mine" patented technology

The invention relates to the technical field of mineral exploration, and discloses a method for determining a heat source center of a gold and copper ore area containing alunite minerals, which comprises the following steps of: determining a to-be-detected area of a target mining area, sampling surface rocks according to a preset grid or section, and acquiring a plurality of rock samples and corresponding original acquisition points; carrying out mineral component analysis on the plurality of rock samples, screening the alunite-containing samples to obtain a plurality of alunite-containing samples, and screening effective samples; performing elemental component analysis on the effective sample, and extracting elements and contents related to gold mineralization or copper mineralization in the effective sample; setting a potential heat source center, calculating the distance between each effective sample and the potential heat source center, introducing a distance attenuation index, establishing an objective function of the element content and the distance, and adopting a gradient descent method to perform inversion solution by minimizing the objective function to obtain coordinates of the potential heat source center, namely the determined heat source center of the gold ore or the copper ore; the method improves the accuracy of gold and copper ore area heat source center exploration.

The invention discloses a heavy metal curing baking-free brick based on copper mine tailings and a preparation method thereof, and belongs to the technical field of solid waste resource utilization, the heavy metal curing baking-free brick comprises the following raw materials by weight: 2-3 parts of lime, 7-9 parts of slag, 6-11 parts of cement, 65-75 parts of copper mine tailings, 0.5-1.5 parts of nano silica, and 3-5 parts of modified metakaolin. According to the method, the copper mine tailings can be effectively treated, heavy metal elements in the tailings can be solidified, environmental pollution and resource waste can be reduced, the baking-free bricks with good performance can be prepared, the using requirements of the fields such as buildings are met, remarkable economic and environmental benefits are achieved, and a feasible and effective way is provided for comprehensive utilization of the copper mine tailings. In addition, the preparation method provided by the invention is simple and convenient to popularize and apply.

The method comprises the following steps: uniformly mixing copper sulfide concentrate powder with a binder and water, pelletizing, drying, adding into an electric arc furnace, heating to 1500-1600 DEG C, melting to form a molten pool, and introducing hydrogen into the molten pool; in the reaction process, pellets are continuously added into the electric furnace, and hydrogen is introduced into the electric furnace. And after the molten metal in the electric arc furnace reaches a certain amount and the pellets added into the furnace completely react, hydrogen feeding is stopped, oxygen is fed into the molten metal, iron in the molten metal is oxidized into FeO, and the FeO enters slag. And if the iron content in the molten metal is less than 0.5%, stopping blowing oxygen, pouring out slag for extracting iron, casting copper into an electrode plate, and carrying out anode refining to prepare electrolytic copper. And the slag is poured into another electric arc furnace, hydrogen is blown into a molten pool, a chemical reaction is carried out to obtain FeO + H2 = Fe + H2O, the obtained molten iron is used for steelmaking, and smoke heat is used for power generation.

The present invention discloses a method for the sequential recycling and large-scale consumption of copper mine tailings. The method of "flotation desulfurization - weak magnetic separation for iron removal - combined gravity and magnetic separation for mica separation - large-scale consumption of all tailings" is adopted. Through steps such as grinding, flotation desulfurization, weak magnetic separation for iron removal, screening and classification, gravity preconcentration, strong magnetic separation for fine selection, and large-scale consumption of all tailings, the recovery of valuable elements and the large-scale consumption of all tailings are realized. Non-ferrous metal mine tailings, especially copper mine tailings, which are difficult to be utilized on a large scale, are transformed into products such as iron concentrate, mica concentrate, and simulated stone that can be utilized with high value. It provides an economically feasible method for the large-scale consumption and high-value utilization of high-silicon copper mine tailings, is conducive to solving the resource waste and environmental pollution of copper mine tailings, and provides technical support for the comprehensive utilization of the same type of tailings in China.

The invention discloses a composite flocculant for treating copper mine tailing filling wastewater and a preparation method and application thereof, the composite flocculant comprises anionic polyacrylamide, a medicament A and a medicament B, the medicament A is at least one of methyl cellulose, chitosan and bentonite, and the medicament B is at least one of sodium sulfate, aluminum sulfate and ferric chloride. The preparation method comprises the following steps: mixing the anionic polyacrylamide, the agent A and the agent B, and drying at the temperature of 60-120 DEG C to obtain the composite flocculant. The composite flocculant disclosed by the invention has the advantages of high settling speed, good flocculation effect, good stability, good adaptability and the like, can be widely used for treating copper mine tailing filling wastewater as a novel flocculant with excellent flocculation performance, can remarkably improve the settling rate, can effectively remove metal ions, organic pollutants and suspended matters in the wastewater, and has the advantages of high efficiency, high efficiency and the like. And moreover, the dosage is as low as 2g / ton of wastewater, the use value is high, and the application prospect is good.

This utility model relates to a copper mine isolation belt, comprising: two sets of uprights, each with a fixed shaft at its bottom end on both sides; a sliding track inside the upright and above the fixed shaft, with a stabilizing slider slidably mounted inside the track. This utility model relates to the technical field of copper mine isolation belts. When used on undulating terrain, this copper mine isolation belt allows for the rotation of upper and lower horizontal bars. By translating or pushing the upper or lower horizontal bars, the uprights on both sides can form an angle with the upper and lower horizontal bars, allowing the guardrail formed by the upper and lower horizontal bars to be used at an angle. Furthermore, the connecting piece allows the angle of the uprights on both sides to be changed when extended, creating an angle between the two uprights to effectively fence off protruding areas.

The utility model provides an auxiliary device for copper ore 5G module deployment, which belongs to the technical field of auxiliary devices and comprises a connector body, a metal film, a spring type contact, an insulating shell, a fixing buckle and a guide groove. The connector main body is made of stainless steel, the metal film is plated on the surface of the connector main body, the spring type contact is arranged in the connector main body, the insulating shell wraps the connector main body, the fixing buckles are arranged on the two sides of the insulating shell, the guide groove is formed in the surface of the insulating shell, and the metal film is plated on the surface of the connector main body. When the connector body is in butt joint with the 5G module, the contact body of the spring type contact is in close contact with the conductive pin of the 5G module to achieve electric connection, the technical problems that a traditional connector is poor in anti-corrosion performance and unstable in electric connection are solved, and the installation and maintenance efficiency is improved.

The application provides a sandstone type copper mine prospecting device, and relates to the technical field of geological surveying.The device comprises a first tripod and a second tripod, three groups of guide rods are arranged between the first tripod and the second tripod, three groups of sliding racks are slidably connected to the guide rods, and three groups of supports are arranged on the second tripod.The device further comprises an anti-overload mechanism, the anti-overload mechanism comprises a mounting frame, a first turn wheel is arranged on the upper surface of the mounting frame, a second turn wheel is arranged on the lower surface of the mounting frame, a plurality of clamping grooves are arranged on the surfaces of the first turn wheel and the second turn wheel, three groups of fixing shafts are arranged between the mounting frame, a connecting plate is fixedly connected to the lower end surface of the mounting frame, a drilling pipe is arranged on the lower end surface of the connecting plate, and the drilling pipe is rotatably connected to the second tripod.The device solves the problem that the motor is overloaded due to the jamming of the drilling pipe of the traditional prospecting device under complex geological conditions by means of the anti-overload mechanism.

The invention provides a copper mine target area prediction method and system based on multi-source information data analysis, and relates to the technical field of computers.The method comprises the steps that firstly, multi-source copper mine related basic information such as earth surface rock outcrop records, soil element content data, area gravity observation data, remote sensing image feature data and geologic structure surveying and mapping data of a target area is collected; performing clue traceability mapping processing on the multi-source basic information to generate a plurality of groups of traceability clue sets; then performing space-time coupling networking processing on the multiple groups of traceability clue sets to construct a dynamic coupling clue network; performing signal resonance strengthening processing on the dynamic coupling clue network to generate a resonance strengthening network; and finally, target region convergence defining processing is executed based on the resonance strengthening network to generate a copper mine target region prediction result, the mineralization potential region range is gradually reduced, the generated copper mine target region prediction result of the target region has higher accuracy and reliability, copper mine exploration work can be effectively guided, the exploration efficiency and success rate are improved, and the exploration cost is reduced.

The invention discloses an environment-friendly flotation method and system for flotation recovery of copper ore and gold ore, and relates to the technical field of wastewater treatment.The environment-friendly flotation method comprises the steps that minerals are prepared and treated, the treated minerals are subjected to rough flotation and fine flotation through a flotation machine, and water treatment is conducted on ore pulp obtained after rough flotation and an ore pulp mixture in the flotation machine; the treated water resource is conveyed into a flotation machine to participate in ore pulp concentration, the concentrated foam ore pulp is subjected to a follow-up recycling process, metal materials in the ore pulp are recycled and extracted, water treatment is conducted on the ore pulp with the metal materials extracted, the quality of ore pulp water treatment and quality inspection after waste water treatment are detected, and the treated waste water is discharged and used. According to the environment-friendly flotation method and system for flotation recovery of the copper ore and the gold ore, wastewater treatment and recycling are implemented in the flotation process, it is ensured that water resources in ore pulp can be reused, dependence on a new water source is reduced, and consumption of the water resources is reduced.

The application discloses a combined depressor for flotation and arsenic removal of copper-arsenic mixed concentrate and an application method thereof, and relates to the technical field of ore dressing.The combined depressor is composed of depressor A and depressor B, wherein the depressor A is a mixture of magnesium ammonium chloride and aluminum sulfate, and the depressor B is a mixture of tartaric acid and carboxymethyl chitosan.The combined depressor and ultrasonic coupling mechanical stirring oxidation are combined to realize strong depression of sulfur-arsenic-copper ore and arsenic-malachite in the copper-arsenic mixed concentrate.The combined depressor is green and pollution-free, the application method is simple and easy for industrial production, and the application method can selectively depress arsenic-containing minerals without adding oxidizing chemicals, and can efficiently separate non-arsenic-containing copper sulfide by using the combined collector of ethylthiuram and ethyl xanthate, so that good copper and arsenic separation effect is achieved.

The invention relates to the technical field of geological exploration, in particular to an ecological sensitive area copper ore prospecting method based on lossless geophysical exploration, which comprises the following steps of: 1, performing image acquisition on the earth surface of a target ecological sensitive area, and generating a cave entrance distribution vector diagram; 2, performing gravity detection on the target ecological sensitive area to generate a three-dimensional gravity detection image; step 3, carrying out confluence analysis on the distribution vector diagram of the cave entrance and the three-dimensional gravity detection image, identifying low-density false anomalies caused by the cave, and generating a correction scheme; and 4, performing data correction and geologic body marking on the gravity detection image in combination with the correction data and typical density characteristics of the copper ore. Aiming at the problems of gravitational exploration false negative anomalies caused by caverns of animals in ecological sensitive areas such as alpine meadow and the like and covering of real anomalies of copper ore, the problem of misjudgment of a gravitational exploration target area is solved by taking accurate recognition of the cave and targeted elimination of the false anomalies as the core, the positioning precision of the copper ore is improved, and the ecological disturbance is reduced.

The invention relates to a biofilter and a method for the oxidation of methane generated in industrial, agricultural and sanitary landfill processes, among others, where the methane oxidation is biological, requiring methanotrophic microbial consortia, and where copper mining tailings are added to stimulate methane oxidation mediated by said methanotrophic microorganisms.

The invention relates to the technical field of copper ore flotation, in particular to a copper tailing concentration and separation device and a method thereof.The copper tailing concentration and separation device comprises a shell used for providing a closed cavity needed by flotation, and the shell is vertically arranged to ensure that ore pulp and bubbles stably flow in the axial direction; the input pipeline is coaxially arranged in the shell, and a pulp outlet is formed in the input pipeline so as to convey ore pulp into the shell; the foaming spray gun is arranged at the bottom of the shell to upwards emit a bubble carrier. The fan-shaped flow guide plates of the inner guide flow guide grid can flow towards the center of the shell under the action of inclination force, and the blank that ore pulp in the center area is prone to loss is filled up; the fan-shaped flow guide plates of the outer guide flow guide grid guide ore pulp to the marginal area, the problem that the amount of the ore pulp in the marginal area is insufficient is solved, the ore pulp concentration difference between the middle portion and the edge of the shell is eliminated, the fan-shaped flow guide plates and the outer guide flow guide grid are alternately arranged in the axial direction to form an edge-center-edge wave-shaped descending path, and the contact time of the ore pulp and bubbles is prolonged.

The utility model relates to the technical field of mine supporting, and discloses supporting safety protection equipment for mining under a copper mine, which comprises two symmetrically arranged supporting plates, a mounting plate fixedly connected to the surfaces of the supporting plates, a bolt mounted at the top of the mounting plate, an open slot formed in the top of each supporting plate, and a protective cover arranged on the top of each open slot, a cavity is formed in the supporting plate, and an adjusting mechanism is mounted in the cavity; according to the device, the well wall can be supported and protected, meanwhile, the influence of falling of stones on workers can be reduced, in addition, through cooperation of the stress mechanism and the pressing alarm, when the well wall deforms, the surrounding workers can be prompted through alarm of the pressing alarm, and the working efficiency is improved. And the problem that in the prior art, part of underground supporting devices can only carry out supporting protection and cannot prompt surrounding workers conveniently when the well wall deforms, so that timely evacuation of the workers is affected is solved.

The invention relates to the technical field of hydrometallurgy, and particularly discloses a copper mine tailing copper extraction method based on'copper ammonia coordination-ultrasonic synergy ', which specifically comprises the following steps of: grinding copper mine tailings, and performing leaching reaction on the copper mine tailings by using a leaching agent under an ultrasonic condition, carrying out solid-liquid separation by adopting a circulating vacuum pump to obtain copper-containing leachate and copper-containing leaching residues; the leaching agent is more than one of an organic ammonia solution and an inorganic ammonia solution; according to the method provided by the invention, efficient coordination complexing of copper and ammonia is promoted through inorganic ammonia / organic ammonia in the leaching agent, so that copper in the ore is successfully transferred from a solid phase to a solution phase, and finally efficient extraction and resource recycling of valuable metal copper in the copper mine tailings are realized; the method does not consume strong acid and strong alkali, the co-leached impurity ions are few, the separation and recovery efficiency is high, and the cost is low.

The application discloses a method for improving the removal efficiency of COD and total oil in overflow water of a copper mine tailing pond, and comprises the following steps: S1, adjusting the pH of copper mine copper selection alkaline wastewater to 4.5-5.5 by using an acidic agent; S2, the wastewater after pH adjustment is introduced into an iron-carbon micro-electrolysis reaction tank; S4, the wastewater after high-level oxidation treatment is introduced into a neutralization reaction tank, the pH of the wastewater is adjusted to 8-9 by using an alkaline agent, and then a modified high-molecular-weight anionic flocculant solution is added after sufficient reaction. The technical scheme of the process, i.e. 'adjusting the pH of wastewater + iron-carbon micro-electrolysis oxidation-reduction reaction + sodium persulfate high-level oxidation + flocculation and precipitation', can significantly reduce the concentration of pollutants such as COD and total oil in the copper mine copper selection alkaline wastewater, solves the problem of low removal efficiency of COD and total oil in the existing copper mine copper selection wastewater, effectively reduces the risk of environmental impact of the wastewater, and provides a basis for effective utilization of the treated wastewater.

The utility model relates to clamping frame technical field, and disclose a kind of copper mine exploration rock core clamping frame, including V type support head, the bottom fixed mounting of V type support head has support base, the inside fixed mounting of support base has reinforcing rod one and reinforcing rod two, the inside of V type support head is provided with anti-abrasion mechanism, the left side and the right side of support base are all provided with modular combination mechanism.The copper mine exploration rock core clamping frame, through the modular combination mechanism set, in use process, by the independent module of quick connection disassembly of clamping frame design, can be flexibly assembled according to the length of rock core in use, in the environment of frequent handling, module can be handled alone, can be easily handled, will not appear hard, low efficiency, muscle strain condition, can also save a lot of space when storage or transfer.

The present invention relates to a process for obtaining co-products from the tailings generated in the flotation of copper sulphide ores, said process comprising magnetic separation as a rougher stage, ultra-fine grinding, magnetic separation as a cleaner stage and reverse cationic flotation of silicates as a recleaner stage. This process involves processing the tailings to produce a magnetic iron ore concentrate (magnetite) that meets the following specifications: >64.10% Fe, <2.50% SiO2, <2.00% Al2O3, <0.065% P and <0.25% Mn. In addition, the present invention relates to the processing of intermediate tailings generated throughout the proposed process for obtaining copper and gold concentrate and for generating additional co-products for the construction industry and for road paving, as well as for use as mineralisers or soil conditioners.

The application discloses a preparation method and application of a low-cost self-doped sodium-ion battery positive electrode material, and comprises the following steps: copper ore, iron ore and nickel ore are sequentially subjected to first calcination treatment, crushing treatment and magnetic separation treatment to obtain a high-magnetic-substance copper-containing mixture, an iron-containing mixture and a nickel-containing mixture; the copper-containing mixture, the iron-containing mixture and the nickel-containing mixture are weighed according to stoichiometric ratios of a manganese-containing compound and a sodium-containing compound, mixed in a solvent, uniformly mixed and dried to obtain a mixed powder; and the mixed powder is subjected to second calcination treatment to obtain the positive electrode material. The preparation method greatly reduces a raw material purification and impurity removal process, utilizes rare elements contained in minerals, prepares a self-doped layered oxide material, has simple preparation process and low cost, and the prepared positive electrode material has high capacity performance, high rate performance and cycle performance.

This invention discloses a method for preparing a collector for copper sulfide ore using waste engine oil and its application. Using waste engine oil as raw material, the method first removes solid particles through impurity removal, then homogenizes and emulsifies the purified waste engine oil to obtain the waste engine oil collector. During the flotation of copper sulfide ore, the ore is first ground to a suitable fineness, and the pH of the slurry is adjusted. Subsequently, the waste engine oil collector and a frother are added, and roughing is performed to obtain a copper concentrate. The copper concentrate is then subjected to blank cleaning to obtain a copper concentrate. This invention for preparing a collector for copper sulfide ore using waste engine oil is simple and easy to implement, with low recycling costs. The flotation process for copper sulfide ore does not require the addition of large amounts of lime, making it environmentally friendly and practically applicable, generating significant social, economic, and environmental benefits.

The invention provides a black Tang new flower double-layer glazing and controllable redox firing process, which comprises the following steps: respectively grinding a ground glaze material and a surface glaze material to specified fineness, sequentially applying the ground glaze material and the surface glaze material to the surface of a porcelain blank, after the glaze surface is dried, putting the blank into a kiln, firing for a certain time in a controllable redox atmosphere, and slowly cooling to obtain a final product, the ground glaze material is prepared from the following components in parts by mass: 40 to 45 parts of yellow surface stone, 10 to 15 parts of raw medicine, 10 to 13 parts of quartz sand, 10 to 15 parts of calcite, 5 to 8 parts of copper ore, 0.6 to 0.75 part of ferric oxide, 1.5 to 2 parts of talcum powder and 1 to 1.25 parts of bovine bone ash; through the technical scheme, the problems of insufficient glaze matching precision, single glazing process, uncontrollable sintering atmosphere and the like in the prior art are solved, the texture, the texture effect and the color development stability of the black Tang new flower Jun porcelain glaze surface are improved, and the high requirements of high-end ceramic artworks on the glaze color and the texture are met.

A flotation method for high-silicon copper oxide ore employs a closed-circuit grinding process. The ore is ground in a ball mill to a 200-mesh content of 65-70% and a grinding concentration of 78-82%. The ore is then stirred in a roughing mixing tank for 20 minutes. The stirred slurry is fed into a roughing flotation machine, where the roughing flotation concentration is controlled at 30%-35%. A single roughing flotation process produces a copper concentrate with a copper grade between 5% and 8%. The resulting copper concentrate is then fed into a concentrating flotation machine. After three rounds of concentrating, a qualified copper concentrate with a copper metal grade greater than 17% is produced, achieving a copper recovery rate greater than 70%. The flotation process is characterized by stable foam properties, enabling simultaneous flotation of copper oxide ore and some non-copper oxide minerals, significantly improving copper metal recovery.

The application discloses a control method of an oxygen-enriched side-blown smelting process, which is suitable for smelting processes of furnace charging materials containing pyrolysis residues and copper sulfide ores in an oxygen-enriched side-blown smelting furnace. At least two operation parameters of oxygen content in flue gas, copper matte phase grade, Fe3O4 content in slag, copper content in slag and slag fluidity are obtained in the smelting process, so as to judge the oxygen potential state in the furnace and the matte-slag separation state; when the oxygen potential in the furnace is increased and accompanied by the increase of the Fe3O4 content in the slag, the oxygen-enriched concentration and / or the side-blown oxygen supply amount are reduced; when the slag fluidity is reduced and / or the copper content in the slag is increased, the flux adding amount is adjusted. Through the linkage adjustment of the oxygen supply parameters and the flux adding amount, the accumulation of Fe3O4 is inhibited, the copper loss with the slag is reduced, and the stable smelting operation is restored.

This invention relates to the field of mineral processing technology, and discloses a copper sulfide ore beneficiation reagent, its preparation method, and its application. The reagent is composed of 50-55 parts by weight of sodium dibutyl monothiophosphate, 20-25 parts by weight of sodium isobutyl xanthate, 10-15 parts by weight of modified mercaptothiocyanate, and 5-10 parts by weight of fusel oil. The modified mercaptothiocyanate is obtained by chemically modifying the molecular structure of conventional mercaptothiocyanates by introducing hydrophobic alkyl groups and / or sulfur-containing functional groups. The fusel oil is a mixture of C4-C8 fatty alcohols. The preparation method includes: weighing the raw materials; mixing and dissolving sodium dibutyl monothiophosphate and sodium isobutyl xanthate to obtain a mixed solution; adding the modified mercaptothiocyanate and stirring to obtain a reaction solution; adding the fusel oil, stirring, separating the liquid to obtain an oily liquid, and filtering to obtain the reagent. The mass ratio of the oily liquid to the mixed solution after separation is (20-80):(80-20), and the filtration time is 30-60 min. The reagent of this invention can be used in the flotation of copper sulfide ore, with a dosage of 60-120 g / t.

The present invention relates to the technical field of ball mills, and in particular to a copper ore ball mill that facilitates the replacement of liners. The mill comprises a ball mill body, a hollow rod, an electric wrench, a magnet, and a lifting assembly. The lifting assembly is used to drive the hollow rod downward, driving the electric wrench downward to engage a nut on the liner. The magnet is used to attract the nut, and then the electric wrench drives the nut to rotate. Simultaneously, the lifting assembly is controlled to drive the hollow rod upward, which can drive the electric wrench upward, thereby driving the nut upward and separating it from the bolts on the liner. The present invention, through the cooperation of the electric wrench and the conveying assembly, can automatically dismantle the liner inside the ball mill body and convey the liner to the outside of the ball mill body. At the same time, a new liner can be conveyed to the inside of the ball mill body for automatic installation without manual operation, thereby improving work efficiency and preventing professional workers from being injured by the liner, thereby improving safety.

This utility model discloses an open-pit copper mine stripping measurement device, relating to the field of stripping measurement technology. It includes a main crossbeam with a mounting base at the middle of its upper surface. A 3D scanner is mounted above the mounting base, and a lifting rod is mounted at the lower end of the 3D scanner. The lower end of the lifting rod is fixedly connected to the mounting base by bolts. Fixed seats are located at both ends of the lower surface of the main crossbeam. Fixed plates are interlocked between the inner and outer sides of the fixed seats. Fixed edges are located at positions corresponding to the inner lower ends of the fixed seats and the inner lower ends of the fixed plates. Fixed bolts are provided between the fixed plates and the fixed seats. Adjusting bolts are provided between the inner ends of the main crossbeam and the fixed seats. This device reduces the need for manual operation, avoids measurement errors caused by manual operation, reduces the difficulty of operation for workers, and improves the efficiency of stripping measurement while ensuring accuracy.

This invention specifically relates to an ecological remediation method for heavy metal-contaminated soil in copper mine tailings ponds based on a composite amendment—Bacillus subtilis—and *Carex balsamina*, belonging to the field of ecological remediation technology for heavy metal pollution in mining soils. The method includes soil pretreatment, preparation and mixing of the composite amendment, addition of Bacillus subtilis bacterial solution, and planting and maintenance of *Carex balsamina*. The composite amendment, with a specific ratio, rapidly improves the physicochemical properties of the highly acidic and barren tailings soil, creating a suitable habitat for functional microorganisms and resilient plants. Bacillus subtilis activates rhizosphere heavy metals and promotes plant growth, forming a symbiotic and synergistic system with *Carex balsamina*, thereby enriching the soil with heavy metals such as Cu and Cd. This invention significantly increases soil pH, reduces salinity, increases organic matter, and improves the removal rate of Cu and Cd. The method uses readily available raw materials, is simple to operate, and is environmentally friendly, making it suitable for large-scale ecological remediation of heavy metal-contaminated sites such as copper mine tailings ponds.

The application discloses a heavy metal solidified non-burned brick based on copper mine tailings and a preparation method thereof, and belongs to the technical field of solid waste resource utilization, and comprises the following raw materials in parts by weight: lime 2-3 parts, slag 7-9 parts, cement 6-11 parts, copper mine tailings 65-75 parts, nano silicon dioxide 0.5-1.5 parts and modified metakaolin 3-5 parts. The application can not only effectively treat copper mine tailings, solidify heavy metal elements in the tailings, but also reduce environmental pollution and resource waste, and can further prepare the non-burned brick with good performance, meet the use requirements in the field of building and the like, has remarkable economic and environmental benefits, and provides a feasible and effective way for comprehensive utilization of the copper mine tailings. In addition, the preparation method is simple and convenient to popularize and apply.

The invention discloses a three-component collecting agent and application of the three-component collecting agent in sulfur-free activated flotation of siliceous refractory copper oxide ore, and belongs to the technical field of mineral flotation agents. The three-component collecting agent is prepared from the following components in parts by weight: 20 to 30 parts of a hydroximic acid chelating collecting agent, 30 to 40 parts of sulfydryl xanthate and 30 to 40 parts of potassium dodecyl phosphate. According to the three-component collecting agent provided by the invention, the flotation effect of the siliceous copper oxide ore is remarkably improved under the condition that a vulcanizing agent is not used through the action of the activating agent on the basis of the synergistic adsorption principle of a surfactant. The activating agent can effectively corrode the surface of the mineral and expose active sites, so that the energy barrier of chemical reaction between the collecting agent and the surface of the mineral is reduced. According to the three-component collecting agent, through the synergistic adsorption effect, the collecting performance of each single agent is enhanced, and the surface activity of the collecting agent is further enhanced. The synergistic effect mechanism not only improves the efficiency of the collecting agent, but also optimizes the selectivity of the flotation process, so that the flotation efficiency of the siliceous refractory copper oxide ore is remarkably improved.