29 results about "Gold content" patented technology

The invention provides a gold ore phase analysis method, and belongs to the field of mineral analys.The gold ore phase analysis method comprises the steps that a gold ore sample is prepared into ore pulp, the pH value is adjusted to 10-11, ultrasonic cavitation treatment is conducted after polyethylene glycol is added, and limonite turbid liquid and sedimentation bottom mud are obtained through separation; the turbid liquid is subjected to flocculation precipitation, drying, roasting, acid dissolution and impurity removal, and the limonite gold-loaded grade is obtained through the mass difference before and after dissolution and gold concentration determination; separating metal sulfide ore heavy minerals and gangue minerals from the settled bottom mud through artificial heavy elutriation, performing acid dissolution and impurity removal on the metal sulfide heavy minerals, and calculating the gold loading grade of the metal sulfide heavy minerals through mass difference and gold concentration determination; after gangue minerals are subjected to oxidizing roasting, the gold content is measured after concentrated acid dissolution; and calculating the distribution rate of gold based on the result. The gold loading grade and distribution of the limonite phase, the metal sulfide ore phase and the gangue mineral phase are measured in a split-phase mode, the method is highly matched with the gold ore development process, operation is easy and convenient, the result is reliable, and beneficiation and metallurgy technological process formulation and technical index pre-judgment can be effectively served.

The invention belongs to the technical field of metallurgy, and relates to a method for testing gold in crude antimony crystal salt, which comprises the following steps: S1, roasting the crude antimony crystal salt at 280-320 DEG C for the first time, then heating to 550-650 DEG C, and roasting for the second time; and S2, after roasting is finished, a composite flux and a silver nitrate solution are added, heat preservation melting is conducted for 10-15 min at the temperature of 1150-1200 DEG C, a lead buckle is obtained, then the lead buckle is subjected to soot blowing, and the gold content in the crude antimony crystal salt is obtained through measurement. According to the method, the influence of sodium sulfide sulfate, sodium sulfide and sodium antimonate on gold content testing is solved through oxidizing roasting pretreatment; and the iron powder, the nickel powder and other composite fluxing agents are added in the subsequent melting process, and the gold content testing accuracy is remarkably improved.

The invention relates to the technical field of gold piece recovery devices, in particular to a gold piece recovery method which is implemented through a gold piece recovery device, and the gold piece recovery device comprises a placement opening, a spectrum detection device, a weighing device and a control device; the gold piece recycling method comprises the following steps that needed operation information is input, specifically, the needed operation information is input into the control device, and the needed operation information comprises information for selecting only gold content detection and information for selecting gold recycling; a step of placing a treated object, specifically, enabling the treated object to pass through a placing opening to enter the gold piece recovery device; and detecting the processed object, specifically, conveying the processed object to a spectrum detection device, performing spectrum detection on the processed object to obtain gold content information of the processed object, and conveying the processed object to a weighing device for weighing to obtain weight information of the processed object. The gold piece recycling device can achieve automatic recycling of gold pieces.

The application discloses a kind of heat insulation films and preparation methods thereof.The heat insulation film includes substrate layer, hard coating layer, first dielectric layer, first barrier layer, noble metal layer, second barrier layer, second dielectric layer and adhesive layer from inside to outside.The first dielectric layer is aluminum-doped zinc oxide, the noble metal layer is a silver-gold alloy layer with controllable thickness, and has a gradient distribution of gold content in the thickness direction;The second dielectric layer is formed into a layered composite structure by alternately stacking titanium dioxide and hafnium oxide.The preparation method includes substrate cleaning and surface activation, hard coating layer coating and curing, magnetron sputtering of dielectric layer and barrier layer, alloying deposition of noble metal layer, alternating sputtering of layered composite dielectric, and adhesive layer coating and compounding.The application realizes excellent infrared barrier performance while maintaining high visible light transmittance through the synergistic design of multi-layer structure and components, significantly improves the stability in a humid and hot environment, and reduces the risk of performance degradation.

The invention relates to the field of semiconductor packaging materials, in particular to a high gold bonding alloy wire and a production process and application thereof, and the production process comprises the following steps: smelting and quickly solidifying raw materials with the purity being greater than or equal to 99.999% to prepare a gold alloy ingot with the gold content being greater than or equal to 99.99%; carrying out hot working and multi-pass cold drawing on the gold alloy cast ingot, and carrying out intermediate annealing during cold drawing to obtain an intermediate wire with the diameter of 50-200 microns; plastic twisting deformation is applied to the middle wire, and the twisting deformation degree ranges from 30 circles per meter to 120 circles per meter; the intermediate wire subjected to twisting deformation is subjected to rapid heat treatment, the heat treatment temperature ranges from 350 DEG C to 550 DEG C, the heat treatment time ranges from 2 s to 8 s, and then rapid cooling is conducted; and precisely drawing the wire material subjected to heat treatment to obtain a final finished product with the diameter of 15-33 microns. Through coordination of the components and the process, the problem of sliding balls or pseudo soldering defects is solved, and a high-strength and low-radian product is obtained.

The application discloses a method for determining the gold-carrying amount of brown iron ore in heavy floatation tailings, which comprises the following steps: mixing the tailing sample with a composite reducing agent composed of flour, activated carbon, anhydrous sodium carbonate and ammonium sulfate; performing closed reduction roasting by subsection heating, constructing a loose porous structure and converting the gangue phase by the pore-forming effect of the ammonium sulfate and the fluxing modification of the sodium carbonate; obtaining the magnetic product by grinding and ultrasonic-assisted magnetic separation, and then performing oxidation roasting and acid dissolution treatment, removing the modified gangue by mass difference subtraction, calculating the net mass of the brown iron ore, and combining with the liquid phase gold content determination to obtain the gold-carrying amount; and the application effectively solves the problems of serious micro-fine particle brown iron ore wrapping, easy roasting and large gangue interference, and realizes the accurate determination of the gold-carrying amount.

Embodiments of the present application provide an electroplating solution for a gold-silver alloy and a use thereof. The electroplating solution comprises a gold ion source, a silver ion source, a first complexing agent, and a second complexing agent, wherein the first complexing agent comprises a hydantoin-based substance, and the second complexing agent comprises an organic sulfonic acid or a salt thereof. By means of a synergistic effect of the two types of complexing agents, the electroplating solution exhibits relatively high stability and can specifically inhibit electrodeposition of silver without affecting deposition of gold, thereby reducing the influence of current density fluctuations on the gold content in an alloy coating. Thus, an alloy coating having a gold content stably maintained within a range of 30-50 wt% can be produced over a relatively wide current density range having an interval width of at least 0.3 ASD.

The filtering device for the gold cyanide-containing waste gold plating solution electrolytic recovery device comprises a gold cyanide-containing waste gold plating solution conveying pipe, a net-shaped filtering module part is arranged on the gold cyanide-containing waste gold plating solution conveying pipe, and an ultrafiltration module is arranged corresponding to the net-shaped filtering module; the net-shaped filtering module part comprises an activated carbon filtering body and a granular impurity filtering body, activated carbon is arranged in the activated carbon filtering body and used for adsorbing organic pollutants, and an organic pollution pretreatment-free structure is formed; the ultrafiltration module comprises an ultrafiltration part main body, ultrafiltration part filtering holes are uniformly formed in the ultrafiltration part main body, a plurality of ultrafiltration grooves are further formed in the ultrafiltration part main body, and ultrafiltration membranes are arranged on the side edges and the bottoms of the ultrafiltration grooves; and the ultrafiltration membrane is used for coarsely filtering cyanide to form a gold content reducing interference type ultrafiltration execution structure.

The invention discloses a preparation method and application of a gold-silver alloy quality control sample, and belongs to the technical field of precious metal analysis and detection. According to the method, a gold ore smelting product gold-silver alloy ingot serves as a basic mother ingot, and a series of gradient concentration quality control samples covering the gold content range of 5%-15% are prepared through the key processes of gradient design, nitrogen protection smelting, electromagnetic stirring, rapid cooling, annealing treatment, machining and the like. According to the method, uniformity evaluation, cooperative assignment, stability investigation and uncertainty evaluation are also performed, so that the matrix matching property, the magnitude reliability and the long-term stability of the sample are ensured. The prepared QCM is low in cost and high in practicability, is particularly suitable for solving the problem of system errors caused by matrix difference between commercially available standard substances and actual production products of mine enterprises in fire assaying analysis, and provides key technical support for quality control of gold ore smelting enterprises.

The invention relates to the technical field of precious metal materials, and discloses a preparation method of a high-hardness 1K gold composite material and application of the high-hardness 1K gold composite material in ornaments.The method comprises the steps that trace rare earth elements are added into a gold-copper-based master alloy melt, then manganese and boron are added, and the manganese and the boron are subjected to an in-situ reaction at the high temperature to generate a manganese boride hard reinforced phase; the rare earth element regulates and controls the in-situ reaction process and inhibits coarse agglomeration of a reinforced phase, so that the reinforced phase is fine and uniformly dispersed and distributed in a metal matrix. The hardness and wear resistance of the prepared composite material are far higher than those of traditional 1K gold, and the composite material has excellent polishing performance, high glossiness and vulcanization discoloration resistance. The material disclosed by the invention solves the problem that the traditional 1K gold ornament is soft and easy to damage, and the base body formula can enable the gold content of 1K gold to reach an appearance visual effect close to that of 18K gold, so that the material is particularly suitable for manufacturing ornaments with high wear resistance requirements, such as rings and bracelets.

The invention discloses a method for measuring trace gold in copper smelting slag flotation iron tailings, which comprises the following steps of: firstly, carrying out pretreatment including square magnetic boat pretreatment and sample pretreatment, and putting a sample into a square magnetic boat for staged heating; carrying out dissolution and suction filtration on the sample, and discarding filtrate; and heating the filter residue by using a clay crucible, preserving heat and cooling. And then performing pyrogenic assay enrichment, including the steps of melting, soot blowing, washing, gold separation, preparation of a gold solution and the like after proportioning the sample, and finally completing the determination of the gold content by an atomic absorption method. According to the method, the reducing power of the iron tailings is firstly removed, the influence of iron, flotation oil and sulfide is eliminated, enrichment is performed by adopting a pyrogenic process test, and a quantitative silver standard solution is added, so that gold is captured by silver, and the determination of trace gold in the copper smelting slag flotation iron tailings can be quickly and effectively completed; and the process cost is low, and the operation process is simple, flexible, rapid and accurate.

The present invention relates to a method for manufacturing a metal element of a piece of jewelry or a timepiece, the method comprising the steps of: (a) shaping and agglomerating a solid composition comprising a metal powder and optionally an organic binder, the metal powder consisting of particles of an alloy selected from the group consisting of the following alloys: * gold alloys containing at least 583 wt‰ gold; * silver alloys containing at least 750 wt‰ silver; * platinum alloys containing at least 850 wt‰ platinum; shaping the mixture, forming an agglomerate of metal particles; (b) forming a metal element by sintering the agglomerate of metal particles on a support at a sintering temperature Tfri, the support having a coefficient of thermal expansion ΔV1, the agglomerate of metal particles having a coefficient of thermal expansion ΔV2, where 0.5*|ΔV2| ≤ |ΔV1| ≤ 1.5*|ΔV2| over a temperature range between * Tfri-200°C and Tfri for gold or silver alloys; * Tfri-400°C and Tfri for platinum alloys, the support and the agglomerate of metal particles being made of different materials.

The present application relates to the technical field of chemical detection, and particularly relates to a method for measuring the quality and content of plastic-wrapped gold products, comprising the following steps: S1, placing the plastic-wrapped gold product to be detected into DMF, heating to above 150 DEG C, heating for 10-15 min, taking out, tearing off the surface plastic wrapping, and obtaining a gold product containing gum; S2, performing oxidation cupellation treatment on the gold product containing gum to remove the surface gum part, and obtaining a treated gold product; S3, weighing the gold mass in the treated gold product, and detecting the gold content in the treated gold product by using fire assaying method. The present application can effectively remove various types of plastic wrapping materials and gum through the combined application of DMF preliminary treatment, composite sol agent pretreatment, multi-stage oxidation cupellation and fire assaying method, while maximizing the protection of the gold product itself, and significantly improving the efficiency and precision of the quality and content measurement of the plastic-wrapped gold product.

The invention provides a method for determining the content of gold and silver in crude gold through combination of fire assaying and ICP-OES, and belongs to the field of metal component measurement. The method comprises the following steps: measuring the gold recovery rate and the silver recovery rate of the magnesia cupel; coating the first sample in a lead foil, and placing the lead foil in a preheated magnesia cupel for fire assaying enrichment to obtain first combined particles; mixing the second sample with pure silver, coating the mixture in a lead foil, and placing the mixture in a preheated magnesia cupel for fire assaying enrichment to obtain second combined particles; performing primary particle combination and impurity removal, and weighing after cleaning and drying to obtain the total content of gold and silver in the sample; treating the second combined particles, performing solid-liquid separation after gold separation treatment, weighing solids, calculating the gold content, collecting a gold separation solution, performing silver removal treatment, determining the mass concentration of other noble metals except gold and silver by using an ICP-OES method, and calculating the total content; and calculating the silver content in the sample. According to the method, cupel recovery rate correction and ICP-OES dual correction are adopted, and recovery rate loss and interference of other precious metals are solved at the same time.

The utility model discloses a gold concentrate gold content measuring device, and relates to the technical field of gold concentrate detection. The device comprises a moving mechanism, a moving assembly comprises a detection water tank fixedly connected to the top of a detection table, the right side of the detection water tank is fixedly connected with a motor, and an output shaft of the motor is fixedly connected with a bidirectional threaded rod through a coupler. According to the utility model, gold concentrate is kept at a stable constant speed when entering water in the detection water tank for detection through the moving mechanism, so that water flow disturbance caused by sudden impact or irregular movement can be reduced to the greatest extent, and the detection environment is ensured to be more stable; the detection instrument can accurately measure physical or chemical parameters around the gold concentrate, so that the accuracy of a detection result is improved, meanwhile, large water surface fluctuation caused by sudden impact is reduced, large mechanical stress possibly caused to all parts of the detection device is reduced, and the detection accuracy is improved. And the equipment is easy to wear and damage for a long time.

To provide a technique capable of increasing the concentration of gold in reduction melting of incineration ash.SOLUTION: The method for producing a gold-containing material includes reducing and melting incineration ash containing gold by using a reduction-melting furnace including a bottomed cylindrical melting furnace main body, an electrode provided inside the main body so as to be capable of ascending and descending, and an electrode ascending and descending device, the melting furnace main body having a first molten metal layer in which a gold-containing amount is equal to or more than 520 ppm, a discharge port provided vertically above the recessed portion in a side surface portion, and separating the first molten metal layer, a second molten metal layer generated above the first molten metal layer and having a gold-containing amount of less than 5,200 ppm, and a slag layer generated above the second molten metal layer into the first molten metal layer, the second molten metal layer, and the slag layer by descending the electrode at a speed of 15 mm / sec to 45 mm / sec and pushing the electrode into the first molten metal layer; And a third step of taking out the first molten metal layer by allowing the first molten metal layer to overflow from the tapping hole.SELECTED DRAWING: Figure 2

The application discloses a karst cave type gold mine precise mining process, which comprises the following steps: determining a sampling point in a stope; taking a photo of the sampling point to obtain sampling point image information; sampling the sampling point to obtain a sampling sample; testing the sampling sample to obtain gold content data of the sampling sample; combining the gold content data of the sampling sample with the sampling point image information to obtain gold content image information; taking a photo of the stope to obtain stope image information; comparing the stope image information with the gold content image information to obtain a stope gold content distribution map; and sequentially mining the stope ore body according to the gold content in the stope gold content distribution map from high to low. The process has the advantages that the sampling and testing procedures of each sublevel are saved, the karst cave type stope can be precisely mined from high-grade ore to low-grade ore in stages, and the mining efficiency and the quality of the mined ore are improved.

The present application belongs to the field of metallurgy, and relates to a method for testing gold in crude antimony crystalline salt, comprising the following steps: S1, first roasting the crude antimony crystalline salt at 280-320 DEG C, and then second roasting at 550-650 DEG C; S2, after the roasting, adding a composite flux and a silver nitrate solution, and then obtaining a lead button by heat preservation and melting at 1150-1200 DEG C for 10-15 min, and then obtaining the gold content in the crude antimony crystalline salt by cupellation and determination. The present application solves the influence of sodium sulfide, sodium sulfide and sodium antimonate on the gold content test by oxidative roasting pretreatment; and the accuracy of the gold content test is significantly improved by adding a composite flux such as iron powder and nickel powder in the subsequent melting process.

The invention discloses a method for enriching gold from an ore material containing low-grade gold. According to the method, gold or sulfide minerals with high gold content are enriched from the ore material in a treatment mode comprising the processes of concentration, reagent removal, grading, regrinding, flotation and the like. According to the method, through the technological processes of concentration, reagent removal, classification, regrinding, flotation and the like, gold or high-gold-content sulfide minerals in sulfur concentrate or copper-sulfur separation tailings and other materials can be effectively enriched, the gold grade can be increased to 2 g / t or above, the sale pricing standard is met, or the pricing coefficient of gold in concentrate is increased. According to the method, the problem that the associated low-grade gold and silver precious metals in the sulfur concentrate or the copper-sulfur separation tailings are difficult to recover is effectively solved, the treatment capacity of subsequent smelting operation can be reduced, and dual improvement of environmental benefits and economic benefits is achieved; the method has the advantages of simple process flow, simple equipment operation, few types of agents, low dosage, low operation cost, reasonable technical economy and the like, and is easy to realize industrial application.

This application provides a method for determining the gold content in high-impurity copper anode slime, belonging to the field of precious metal analysis and detection technology. The method includes: digesting the high-impurity copper anode slime sample with aqua regia to obtain a gold-containing digestion solution; extracting the gold-containing digestion solution using MIBK to obtain a gold-loaded MIBK organic phase; mixing the gold-loaded MIBK organic phase with a fire assay mixture and heating at low temperature to completely volatilize the MIBK, leaving the gold in elemental form in the mixture; then sequentially performing fire assay melting, ash blowing, and gold separation steps; finally, calculating the gold content by weighing. This application directly couples "selective impurity removal by wet extraction" with "efficient enrichment by fire assay," eliminating interference from impurities such as copper, selenium, and tellurium on gold determination at the source. It has the advantages of short operation process, low detection cost, high accuracy and stability, meeting the needs for accurate, efficient, and batch determination of gold content in high-impurity copper anode slime.

This application provides a fire assay method for determining the gold content in gold-containing resin, belonging to the field of precious metal analysis and detection technology. Before fire assay analysis, the gold-containing resin is immersed in anhydrous ethanol. The anhydrous ethanol disrupts the cohesive force of the gold-containing resin, preventing splattering during the roasting stage. After immersion, the resin is transferred to a ceramic boat for staged roasting to ashing, eliminating the influence of particulate carbon on the subsequent fire assay analysis. Finally, the roasted resin is transferred to a clay crucible, where sodium carbonate, borax, lead oxide, silicon dioxide, and flour are added and stirred thoroughly. A covering agent is then applied, followed by melting, ash blowing, and gold separation to determine the gold content in the resin. This method achieves rapid and accurate determination of the gold content in gold-containing resin, improving the accuracy and stability of the detection results.

This invention relates to the field of semiconductor packaging materials, specifically to a high-gold-bond alloy wire, its production process, and its applications. The process includes the following steps: melting and rapidly solidifying raw materials with a purity ≥99.999% to prepare a gold alloy ingot with a gold content ≥99.99%; hot-working and multi-pass cold drawing of the gold alloy ingot, with intermediate annealing during cold drawing to obtain an intermediate wire with a diameter between 50μm and 200μm; applying plastic torsional deformation to the intermediate wire at a degree of 30 turns / meter to 120 turns / meter; subjecting the torsional-deformed intermediate wire to rapid heat treatment at a temperature of 350℃ to 550℃ for 2s to 8s, followed by rapid cooling; and precision drawing the heat-treated wire to a final product with a diameter of 15μm to 33μm. This invention, through the coordination of components and processes, solves the problem of slippage or poor soldering defects, achieving the goal of producing high-strength, low-curvature products.

This invention relates to the field of mineral analysis technology, specifically to a method for quantitative analysis of the occurrence state of gold in ore deposits. The method includes: pretreatment of ore samples to obtain the total gold content; gold hyper-enrichment treatment of the pretreated ore samples to obtain hyper-enriched ore samples; fabrication of resin targets for both the pretreated and hyper-enriched ore samples, and analysis of each resin target using TIMA; micro-area in-situ analysis of the sulfide resin targets using LA-ICP-MS; and quantitative analysis of the gold occurrence state in the ore samples using data obtained from TIMA and LA-ICP-MS analyses. Compared to traditional qualitative or semi-quantitative methods, this method has higher resolution and wider applicability, suitable for the study of different types of gold deposits, and provides reliable data support for subsequent optimization of beneficiation and smelting processes.

The utility model belongs to the technical field of precious metal smelting, and particularly relates to a gold-loaded carbon mixing device which comprises a material mixing frame, a rotating frame and a material mixing barrel, the rotating frame is rotationally arranged on the material mixing frame, and a power mechanism I is arranged on the material mixing frame and used for driving the rotating frame to rotate; the top and the bottom of the material mixing barrel are open, a conical part is arranged in the middle of the top of the material mixing barrel, the tip end of the conical part faces upwards, the edge of the conical part and the edge of the top of the material mixing barrel are arranged at intervals, and a movable or turnable material blocking plate is arranged at the bottom of the material mixing barrel so that the bottom of the material mixing barrel can be opened or closed; the number of the material mixing barrels is two, the two material mixing barrels are rotationally arranged on the rotating frame at intervals, and the two material mixing barrels are correspondingly located at the two ends in the diameter or radius direction when the rotating frame rotates. According to the utility model, the mixing uniformity of the gold-loaded carbon can be effectively guaranteed, the distribution uniformity of the gold content in the gold-loaded carbon is improved, and the sampling operation convenience of the gold-loaded carbon is improved.

The invention belongs to the technical field of gold content analysis in a geological exploration ore dressing and smelting process, and particularly relates to a method for directly measuring gold in ore by ICP-MS (Inductively Coupled Plasma Mass Spectrometry) applying an internal standard ion matrix strength agent. After a (1 + 1) aqua regia hot plate is used for heating an acid-soluble sample, complex operations such as separation and enrichment are not needed, a to-be-detected solution is obtained through direct suction filtration, then the inductively coupled plasma mass spectrometry is directly adopted for determination, meanwhile, an internal standard ion matrix strength agent is added, matrix adjustment is conducted, and complex matrix interference of the sample is reduced. According to the method, separation and enrichment are not needed in the pretreatment stage, an inductively coupled plasma mass spectrometer is matched for determination, and an internal standard ion matrix strength agent is added, so that the method is simple to operate, high in recovery rate, high in detection sensitivity, accurate and reliable in result and high in stability, and an excessive dilution multiple is not needed; the technical problems existing in the existing gold content analysis technology are solved.

The invention relates to a method for analyzing the content of gold in copper concentrate, and belongs to the technical field of copper concentrate analys.The method mainly comprises the steps that 1, the copper concentrate is heated and dissolved with nitric acid, and the gold is left in dissolving slag; (2) ashing the dissolving slag; according to the method, gold in the copper concentrate is detected through the atomic absorption method, and compared with an existing fire assaying method, the method has the advantages that the detection process of gold in the copper concentrate is greatly shortened, the detection cost and interference elements are reduced, the gold detection efficiency is greatly improved, and the detection cost is reduced.

The invention relates to the technical field of gold ore gold content detection, and discloses a gold ore alkalinity rapid colorimetric detection kit containing a composite reagent, which comprises a composite reagent group, a matched appliance and a color development comparison assembly, the composite reagent group comprises a No.1 reagent, a No.2 reagent mixture, a No.3 reagent, a No.4 reagent mixture and a No.8 developing solution; the matched appliance comprises a plastic measuring cylinder, a food-grade self-heating bag, filter paper and a polyurethane sponge rod. According to the gold ore alkalinity rapid colorimetric detection kit containing the composite reagent and the use method, the kit containing the composite reagent group, the matched appliance and the developing comparison assembly is adopted, the first reagent activates gold, the third reagent peroxyurea is used for mild oxidation, and a mixture of the second reagent and the fourth reagent is complexed with interference ions, so that corrosion, volatilization and toxicity of aqua regia are avoided, and potential safety hazards are avoided; the matched appliance does not need professional laboratory equipment, and the detection process comprises sample pretreatment, reagent addition and dissolution, separation and enrichment and color development and colorimetry, so that the detection can be quickly completed on site.

This application provides an electrochemical pretreatment reagent system and detection method for high-antimony gold ore, belonging to the field of hydrometallurgy. The reagent system consists of sodium sulfide, sodium hydroxide, sodium thiosulfate, barium chloride, calcium glycinate, and a polymeric cathode barrier. The amount of sodium hydroxide used ensures that the initial pH of the pre-conditioned slurry prepared from the reagent system and the high-antimony gold ore sample is 10-11.5. The concentrations of sodium sulfide, sodium thiosulfate, barium chloride, calcium glycinate, and polymeric cathode barrier in the pre-conditioned slurry are 30-80 g / L, 5-20 g / L, 5-15 g / L, 2-10 g / L, and 0.5-2.0 g / L, selected from one or more of polyethylene glycol, polyvinylpyrrolidone, polyethyleneimine, polyvinyl alcohol, polyoxyethylene, and polypropylene glycol. This application achieves efficient antimony extraction and accurate determination of gold content in the ore through the synergistic effect among the reagent components.

The invention discloses a heat insulation film and a preparation method thereof. The heat insulation film sequentially comprises a base material layer, a hard coating, a first dielectric layer, a first barrier layer, a precious metal layer, a second barrier layer, a second dielectric layer and an adhesive layer from inside to outside. The first dielectric layer is aluminum-doped zinc oxide, and the noble metal layer is a thickness-controllable silver-gold alloy layer and has gold content gradient distribution in the thickness direction; the second dielectric layer is of a layered composite structure formed by alternately stacking titanium dioxide and hafnium oxide. The preparation method comprises the steps of substrate cleaning and surface activation, hard coating coating and curing, magnetron sputtering of the dielectric layer and the barrier layer, alloying deposition of the noble metal layer, alternate sputtering of the layered composite dielectric, coating and compounding of the glue layer and the like. Through collaborative design of a multi-layer structure and components, excellent infrared barrier performance is realized while high visible light transmittance is maintained, the stability in a humid and hot environment is remarkably improved, and the risk of performance degradation is reduced.