301 results about "Sulfur oxide" patented technology

The invention relates to the technical field of industrial waste gas treatment, in particular to a waste gas treatment system and method based on wet desulphurization. The system comprises a waste gas pretreatment unit, a composite absorption reaction unit, a gas-liquid separation unit, an absorption liquid circulation system, an intelligent control system and a waste liquid treatment unit, wherein each unit is communicated with a shielding signal line through a corrosion-resistant pipeline to form a closed-loop operation system; industrial waste gas is subjected to pre-dedusting and cooling through the waste gas pretreatment unit and then enters the composite absorption reaction unit to be in countercurrent contact with a composite absorbent to achieve sulfur dioxide removal, a gas-liquid mixture obtained after reaction is separated through the gas-liquid separation unit, purified gas is directly discharged, and absorption liquid enters the absorption liquid circulation system to be recycled. And the saturated absorption liquid with the density of 1.15-1.25 g / cm < 3 > is conveyed to a waste liquid treatment unit for treatment. According to the invention, sulfur dioxide in waste gas can be efficiently removed through synergistic absorption and intelligent control, the operation cost is reduced, and equipment corrosion is reduced.

The invention relates to the technical field of atmospheric science and remote sensing, in particular to a volcanic sulfur dioxide vertical section inversion method based on a Lagrange diffusion model, and the method comprises the steps: obtaining volcanic eruption total mass constraint, satellite sulfur dioxide column concentration and effective pixels, three-dimensional meteorological driving data and chemical clearing parameters; calculating a vertical weighting function by utilizing a radiation transmission mode, and generating initial vertical distribution by combining with a column concentration layering ratio; constructing a diffusion model to simulate an air mass backward track and match observation pixels to obtain attribution air mass distribution; optimizing a volcanic sulfur dioxide vertical emission profile time sequence based on attribution distribution and total mass constraint; and inputting the sequence into a diffusion model for forward simulation, comparing satellite observation data to calculate a verification index, correcting a diffusion coefficient according to a threshold value, and outputting a target vertical emission profile time sequence. According to the method, through backward trajectory attribution and forward verification closed-loop optimization, the volcanic sulfur dioxide vertical distribution inversion precision is remarkably improved.

The application provides a preparation method of ergothioneine and application of a mercapto compound in the method. The method comprises the following steps: in the presence of a catalyst system, a sulfur oxide is reacted to generate ergothioneine. The catalyst system comprises a first catalyst and a second catalyst. The first catalyst is ergothioneine synthase, and the second catalyst is one or more of a mercapto-containing amino acid and a mercapto-containing polypeptide. The preparation method of ergothioneine provided by the application does not need to use a large amount of a chemical mercaptan reagent with a foul smell, has the advantages of high efficiency, green environmental protection, and friendly production scene, and is beneficial to industrial production of ergothioneine.

In some embodiments, the present disclosure relates to a system. The system includes a substrate and a fluid trapping material formed on one or more surfaces of the substrate. The fluid capture material includes a sorbent material incorporating one or more fluids including water, carbon dioxide, sulfur oxides, alcohols, or a combination thereof. The fluid capture material also includes one or more binder materials, wherein the binder materials are optionally at least partially cross-linked. The fluid capture material includes at least one aperture.

Provided herein are methods and systems for treating a sulfur dioxide-containing gaseous stream. The method includes combusting a tail gas in an excess of oxygen gas to yield a thermal oxidizer effluent containing sulfur dioxide and oxygen. The thermal oxidizer effluent is introduced to an oxidative catalytic converter to convert sulfur dioxide to sulfur trioxide, thereby forming an oxidized gas stream. The oxidized gas stream is routed to a quench tower and contacted with a dilute aqueous acid quench stream to yield sulfurous acid, hydrated sulfur dioxide, or both. The sulfurous acid or hydrated sulfur dioxide is oxidized with the excess of oxygen from the thermal oxidizer effluent to yield sulfuric acid.

A system is described that enables the purification of COx, SOx, NOx, dioxin and furan, and H2S gases using wet and dry filters in a single chimney, comprising: a nozzle system (2) that sprays a mixture consisting of water, micronized zeolite, ammonia, and boron mineral in fine droplets to perform the first purification of SOx (sulfur oxides), NOx (nitrogen oxides), and COx (carbon oxides) gases entering the chimney (1) from the combustion gas, a zeolite-based dry filter (3) that purifies the dioxin and furan components in the flue gas (B) rising after the first purification, a first continuous measurement system (4) that measures the values of the combustion gas at the entry point to the chimney (1), a second continuous measurement system (5) that measures the values of the combustion gas after the dry filter (3), an Al-supported processor (6) that adjusts the amount of the mixture to be sprayed from the nozzle system (2) based on the comparison of the first continuous measurement system (4) and the second continuous measurement system (5).

The utility model relates to a tin bath sulfur dioxide blowing device which comprises a sulfur dioxide generating device used for generating small-flow sulfur dioxide gas, and the sulfur dioxide generating device is led into a blowing pipe; the blowing pipe is a metal pipe body, one end of the metal pipe body is sealed, the other end of the metal pipe body is connected to the sulfur dioxide generating device through a hose, a small hole is formed in the sealed end, and a nozzle is arranged at the position of the small hole; a flow meter is arranged on the hose and is used for monitoring the flow of sulfur dioxide in the blowing pipe to be small flow; a support is arranged on the metal pipe body, and the blowing pipe is fixed to the positions of climbing rollers, attached with tin sulfide, of the first to third transition roller tables through the support. Sulfur dioxide is blown to the roller through the small holes, sulfur dioxide and tin sulfide are subjected to a chemical reaction, SO2 and the glass plate can generate a Na2SO4 thin film protection layer capable of being wiped off under the high-temperature condition, the Na2SO4 thin film protection layer is attached to the lower surface of the glass plate, and the hardness of the glass plate is increased. The probability of gouges and abrasion is reduced, and the problem of quality defects is solved.

The utility model discloses a diesel generator flue gas purification mechanism for civil air defence engineering, including air inlet pipe and purification bin, the air inlet pipe one end is linked with diesel generator exhaust pipe in civil air defence engineering power generation room intercommunication, the other end of air inlet pipe is inserted into the purification bin and the opening direction is perpendicular to downward, the open end position of air inlet pipe in the purification bin is connected with the shunt joint, each interface of shunt joint all is connected with the jet pipe that the air hole of pipe body lateral wall is evenly set up, the utility model relates to civil air defence engineering technical field, utilize liquid supply booster pump and press into the spray subassembly in alkaline solution (15% magnesium hydroxide compound agent), and further via spray subassembly to the spray of filler layer, make the nitrogen monoxide, nitrogen dioxide, sulfur dioxide and particulate matter etc. in tail gas contact with the alkaline water mist in purification bin and filler layer, to the purification treatment of nitrogen monoxide, nitrogen dioxide, sulfur dioxide and particulate matter.

The invention relates to a filter unit for removing gaseous compounds (nitrogen oxides, sulfur oxides, volatile organic compounds, carbon monoxide and the like) and bacteria and viruses from interior air, in particular interior air of a motor vehicle, the invention also relates to a method for removing gaseous harmful substances and bacteria and viruses from interior air, in particular interior air of a motor vehicle.

The utility model discloses a countercurrent absorption device for sulfurous acid, which consists of a process water pipe, a tail gas fan, a third-stage absorption tower, a second-stage absorption tower, a shower nozzle, a first-stage absorption tower, a finished product acid pump, a sulfur furnace, a circulating acid pump and a baffle plate. According to the sulfur dioxide absorption tower disclosed by the invention, the problems that sulfur dioxide gas is not thoroughly absorbed and tail gas pollutes the environment in a sulfurous acid preparation process are solved by adopting countercurrent absorption of the flow direction of sulfur dioxide gas and the flow direction of process water and adopting an absorption mode of combining a shower nozzle and baffle plate water distribution; the sulfur dioxide gas absorption efficiency is high, and equipment and power energy are saved.

This invention discloses a process for preparing high-purity vinyl sulfite using a jet-type loop reactor. Based on the jet-type loop reactor, it employs multiple catalytic systems, using ethylene oxide and sulfur dioxide as raw materials, combined with relevant solvents. This invention relates to the field of vinyl sulfite technology. This process for preparing high-purity vinyl sulfite using a jet-type loop reactor enhances gas-liquid mass transfer through an external circulation jet-type loop reactor. Combined with optimized raw material pretreatment, the reaction cycle is shortened to 2.5-3.0 hours, improving efficiency by more than 50% compared to batch processes. The entire process is continuous, with equipment utilization exceeding 85%, suitable for large-scale production of tens of thousands of tons per year. It addresses the shortcomings of existing processes in terms of scalability, achieving high production efficiency and significant scalability advantages. Furthermore, the entire process is a closed loop, preventing sulfur dioxide leakage. Excess sulfur dioxide is recovered, and solvents are recycled, reducing pollutant emissions by more than 80%.

The present application relates to the technical field of health, environmental management and resource development, and discloses an alkaline-sulfur oxidizing bacteria and its application in water pollution treatment and bioleaching. The alkaline-sulfur oxidizing bacteria is named 381-2, which has been preserved in the China General Microbiological Culture Collection Center on December 23, 2024, and the preservation number is CGMCC No. 33017; the microbial classification name is Stutzerimonas sp. The present application isolates a new species of Stizolobium strain from a deep-sea hydrothermal area Stutzerimonas sp. . The strain has strong and rapid oxidation ability of thiosulfate ions, and also has the characteristics of producing alkali, so it can be applied to the fields of water pollution treatment and bioleaching.

This invention belongs to the field of mineral processing technology, specifically relating to a selective sulfidation roasting-flotation separation method for a smithsonite-calcite mixed ore. The method first involves crushing and grinding the smithsonite, calcite, and sulfiding agent, then mixing them in a certain proportion and subjecting them to sulfidation roasting, preferentially causing the smithsonite to undergo sulfidation. After cooling the roasted product in an inert atmosphere, flotation separation is performed using xanthate as a collector to obtain zinc concentrate. By controlling the atmospheric conditions during the sulfidation roasting process, the sulfidation reaction efficiency of the smithsonite can be improved, and the generation of sulfur oxide gases during roasting can be reduced. When using this method to process the smithsonite-calcite mixed ore, effective recovery of the smithsonite can be achieved, with a flotation recovery rate exceeding 88%. This invention features a simple process flow and easily controllable operating conditions, providing a new technical approach for the efficient utilization of smithsonite resources.

This invention provides a hydrocarbon gas separation system, comprising a double-layered tube assembly and a negative pressure system. The double-layered tube assembly includes a medium delivery inner tube, a multi-layered membrane assembly, an annular interlayer gap, and a pressure-bearing protection section outer tube. The double-layered tube assembly is sealed at both ends. The multi-layered membrane assembly includes a retention layer, an isolation layer, and a selectively permeable membrane layer. The medium delivery inner tube is nested inside the pressure-bearing protection section outer tube and encloses the multi-layered membrane assembly. The negative pressure system is connected to the double-layered tube assembly. After the mixed gas is processed by the multi-layered membrane assembly in the medium delivery inner tube, sulfur dioxide is retained. The hydrocarbon gas enters the annular interlayer gap for extraction, and the retained sulfur dioxide is released back into the gas. Finally, the gas enters a sulfur dioxide detection instrument and is detected using ultraviolet fluorescence, making the data more consistent with the actual value and providing a scientific basis for relevant decision-making.

A RedOx furnace and process is provided for regenerating a spent sulfuric acid stream or other sulfur-containing stream by decomposing the spent sulfuric acid stream and / or other sulfur-containing stream to recover sulfur dioxide from the streams. The RedOx furnace includes a reduction chamber having an interior atmosphere, an oxidation chamber having an interior atmosphere positioned downstream from, and in fluid communication with, the reduction chamber, an inlet for supplying a spent sulfuric acid stream or other sulfur-containing stream into the interior atmosphere of the reduction chamber, and an inlet for supplying a pure oxygen stream into the interior atmosphere of the reduction chamber.

This invention relates to a rare earth denitrification catalyst, its preparation method, and its application. The rare earth denitrification catalyst comprises rare earth element single atoms and a titanium dioxide-based composite oxide doped with rare earth single atoms. The rare earth element single atoms in this invention exhibit a high adsorption priority for sulfur dioxide, allowing the position and quantity of sulfate to be controlled by the rare earth element single atoms. Furthermore, the hydroxyl groups in the sulfate can enhance the acidity of the catalyst, thereby further improving its redox capacity. The titanium dioxide-based composite oxide can effectively inhibit sulfur dioxide poisoning and further improve the catalyst's denitrification ability in the presence of sulfur dioxide. The rare earth denitrification catalyst of this invention maintains high catalytic activity even in the presence of sulfur dioxide, exhibiting excellent denitrification and sulfur resistance performance.

A slurry reactor liquefied gas desulfurization device and a desulfurization method thereof relate to the technical field of liquefied gas treatment, and comprise a fixed bed reactor, a mercaptan removal tank, a water washing tank, an alkali liquor oxidation tower and an alkali liquor tank, a top inlet of the fixed bed reactor is communicated with liquefied gas obtained by desulfurization of a lean amine solution through a pipeline, a bottom outlet of the fixed bed reactor is communicated with a top inlet of the mercaptan removal tank through a pipeline, and a top outlet of the mercaptan removal tank is communicated with a top inlet of the washing tank through a pipeline; an outlet in the top of the washing tank is communicated with a refined liquefied gas pipe network through a pipeline; a bottom outlet of the mercaptan removal tank is communicated with a bottom inlet of the alkali liquor oxidation tower through a pipeline, a bottom outlet of the alkali liquor oxidation tower is communicated with a top inlet of the mercaptan removal tank through a pipeline, and one side of the lower end of the alkali liquor oxidation tower is connected with an air inlet pipeline; according to the method, mercaptan in liquefied gas can be removed, sulfur dioxide is prevented from being generated after combustion, acid rain and air pollution are reduced, meanwhile, consumption of alkali liquor can be reduced, and the discharge amount of waste alkali liquor is reduced.

The application belongs to the technical field of chondroitin sulfate preparation, and particularly relates to application and application method of liquid sulfur dioxide in preparation of chondroitin sulfate or chondroitin sulfate salt. In the application, liquid sulfur dioxide is used as a solvent to perform sulfonation modification treatment on unsulfated chondroitin, on the one hand, the use of traditional high-boiling organic reagents is avoided, the difficulty of three-waste treatment is reduced, and the process is more green and environmentally friendly; on the other hand, the post-treatment operation of the sulfonation reaction is simpler, and sulfur dioxide can be removed from the system by only temperature control or pressure adjustment, so that solvent residues possibly existing in the final product are avoided, and the product is safer. In addition, by adjusting the key conditions of the sulfonation reaction, the proportion of chondroitin sulfate with 6 independent sulfation in the disaccharide unit of the sulfonation product is 70% to 90%, the reaction is stable and reliable, and the sulfonation rate is high.

The invention relates to a limestone-gypsum wet desulphurization method and system.The method comprises the steps that desulfurized rich slurry is heated through a rich liquid heater and desorbed through a flash desorption device in sequence, obtained flash desorption steam is purified through a purification treatment unit, and desorbed sulfur dioxide gas can be obtained; and treating at least part of the desulfurized lean slurry by a gypsum treatment unit to obtain a gypsum product. By adopting the method disclosed by the invention, the discharge amount of the gypsum can be reduced and the quality of the gypsum can be improved while resource recycling of the sulfur is realized. Besides, the obtained desorbed sulfur dioxide gas can be converted into chemical products through subsequent process treatment, so that the current situation of sulfur resource shortage is relieved.

The invention discloses a synthesis process of tungsten hexafluoride, and relates to the technical field of special gas synthesis. The process comprises the following steps: mixing ammonium fluoride and hydrofluoric acid to prepare an activation solution, carrying out ultrasonic activation treatment on tungsten powder to obtain pretreated tungsten powder, and reacting the pretreated tungsten powder with fluorine gas at a certain temperature and pressure to prepare a liquefied crude product tungsten hexafluoride; the preparation method comprises the following steps: by taking aluminum sec-butoxide and the like as raw materials, carrying out sol-gel and ethanol supercritical drying and calcining to prepare highly porous activated aluminum oxide; gasifying the crude tungsten hexafluoride, adsorbing with activated aluminum oxide, and rectifying to obtain purified tungsten hexafluoride liquid; and finally, dissolving in liquid sulfur dioxide, treating under illumination with the wavelength of 395nm, and carrying out distillation separation to obtain high-purity tungsten hexafluoride. According to the method, the activation pretreatment is combined with multi-stage purification, so that the purity and the synthesis efficiency of tungsten hexafluoride are remarkably improved.

This invention relates to the field of flue gas treatment technology, specifically to a sulfur dioxide gas absorbent, comprising the following raw materials by weight: 90-100 parts of an aqueous amine solution and 2-6 parts of additives. In this invention, the nitrogen-zinc ion-sulfur active center of the catalyst acts as a molecular key, efficiently and reversibly coordinating and activating sulfur dioxide molecules, significantly reducing the reaction energy barrier and fundamentally improving the intrinsic absorption rate. The enhancer, with its high specific surface area, provides a large interface for the reaction. Its surface sulfonic acid groups not only buffer the decrease in system pH, maintaining the optimal acid-base environment for the reaction, but also catalyze the conversion of absorption intermediates into more stable products, thereby shifting the reaction equilibrium to the right. Under the combined effect of these two factors, the catalyst accelerates the reaction towards equilibrium, while the enhancer continuously shifts the equilibrium point, resulting in a higher absorption capacity for the absorbent.

This invention discloses an apparatus and process for removing sulfur dioxide from flue gas using siderite slurry, relating to the field of environmental protection technology. The apparatus comprises six major components: desulfurization, slurry circulation, slurry replenishment, oxidation, defoaming emission, and spent slurry treatment. The components are interconnected by pipelines. The process includes siderite pretreatment slurry preparation, slurry replenishment, flue gas desulfurization, sulfite oxidation, flue gas defoaming emission, and spent slurry treatment. Siderite is crushed and ground into a slurry with a specific particle size and solids content, which is then contacted countercurrently with sulfur-containing flue gas. Utilizing ferric carbonate, magnesium carbonate, and calcium carbonate in the slurry as desulfurizing agents, combined with the oxidation effect of air and ferric ions, sulfur dioxide is converted into ferric sulfate and calcium sulfate, achieving desulfurization. This invention has high desulfurization efficiency, with the sulfur dioxide content in the purified flue gas below 50 mg / Nm³. 3 It makes full use of low-grade siderite resources, and the desulfurization by-products can be utilized as resources. The process is simple and has no secondary pollution, resulting in significant economic and environmental benefits.

The invention belongs to the technical field of flue gas sulfur oxide removal, and particularly relates to a flue gas desulfurization gypsum chloride ion concentration soft measurement method and system. The method comprises the following steps: S1, selecting characteristic variable data; s2, extracting online continuous monitoring data of chloride ion concentration in the desulfurization slurry; s3, determining a target variable; s4, screening out a final characteristic variable group; s5, performing data preprocessing on the final feature variable group; s6, establishing a training sample group based on a recurrent neural network model predictor; s7, training a preliminary recurrent neural network model; s8, obtaining a final prediction model; and S9, inputting a target characteristic variable group of the flue gas desulfurization gypsum to be measured into the trained recurrent neural network model to obtain the chloride ion concentration of the flue gas desulfurization gypsum to be measured. According to the method, the consumption of gypsum flushing water and the consumption of desulfurization wastewater treatment are reduced while the content of chloride ions in the desulfurization gypsum is ensured to reach the standard.

The invention belongs to the technical field of wine brewing, relates to a natural sweet wine low-sulfur brewing method for delaying white grapes until the white grapes turn red and then harvesting the white grapes, solves the health hidden danger and flavor defects caused by high-sulfur addition in the traditional sweet white wine process, and remarkably improves the flavor quality of the wine at the same time. According to the method, complete and healthy red (total anthocyanin content is greater than or equal to 5mg / kg) fruits are selected through artificial spike selection and grain selection, and the cardinal number of infectious microbes in raw materials is reduced; no commercial yeast is added, natural slow fermentation is achieved by means of microorganisms, and the finished product is good in flavor and quality; gallic acid, condensed tannin and hydrolyzed tannin with a ratio of 1: 1: 1 are compounded to prepare wine-brewing tannin, and the wine-brewing tannin and low-dose sulfur dioxide construct a synergistic system, so that the sulfur consumption of sulfur dioxide is greatly reduced, secondary fermentation of high-sugar wine liquid is prevented, and infectious microbes and wine body oxidation are effectively inhibited. The finished product biogenic amine, pesticide and heavy metal residues all meet the safety standard, mycotoxin is not detected, meanwhile, the original flavor of the wine body is prominent, the storage stability is good, and dual guarantee of health and quality is achieved.

This invention provides a copper adhesion inhibitor that inhibits copper adhesion to steel materials and suppresses the deterioration of the color tone of the steel material surface when pickling steel materials in a hydrochloric acid cleaning solution containing a large amount of copper ions. [Solution] A copper adhesion inhibitor for addition to a pickling solution for steel materials, characterized by comprising one or more of the following: polyallylamine, diallylamine-sulfur dioxide copolymer or a salt thereof, methyldiallylamine-sulfur dioxide copolymer or a salt thereof, dialkyldiallylammonium-sulfur dioxide copolymer, polycondensate of dicyandiamide and diethylenetriamine or a salt thereof.

The invention relates to the field of oxidative desulfurization of oil and sulfur-containing liquid hydrocarbon fuels (including diesel fuel) and can be used to reduce harmful emissions and exhausts (in the form of sulphur oxide and carbon monoxide - SO2 and CO) of oil refineries, as well as various industrial enterprises (including energy), facilities and engines using hydrocarbon fuels. Method of oxidative desulfurization of oil and liquid hydrocarbon fuel and reducing harmful emissions of sulfur oxides and carbon provides a process of oxidation in tanks or pipelines by ozone (O3) or ozone-containing gases, in which sulfur oxides (SO2 and SO), without releasing them into the atmosphere, mix in a closed vessel or pipeline with carbon monoxide (CO) and by means of chemical reactions of sulfur monoxide decomposition (2SO↑ → SO2↑+S↓) and sulfur recovery (SO2↑ + 2CO↑ → S↓ + 2CO2↑) elemental sulfur (S) is extracted from oil or liquid hydrocarbon fuel and carbon monoxide (CO) is converted into its dioxide (CO2). The oxidation, also decomposition and recovery reactions are carried out one-step or sequentially, in the presence of oxidation-recovery group catalysts corresponding to these reactions, such as tert-Butyl hydroperoxide (C₄H₁₀O₂). Ozonized atmospheric air is used as ozone-containing gas.

The invention relates to a preparation method of a full-coal-gangue-based geopolymer, and belongs to the technical field of solid waste resource utilization. The method comprises the following steps: S1, mixing gangue ash with coal gangue raw ore powder to obtain a mixed solid; s2, adding alkali-activated liquid into the mixed solid, stirring and mixing to form slurry, molding the slurry, and curing to obtain a geopolymer; wherein the alkali-activated liquid is prepared from water glass, sodium hydroxide and water, the modulus of the alkali-activated liquid is 1-1.2, and the alkali-binder ratio of the alkali-activated liquid is 0.15-0.25. According to the method, the gangue raw ore is directly doped into the calcined gangue ash, so that the use amount of the gangue ash is greatly reduced, the process energy consumption is remarkably reduced, the emission of pollutants such as greenhouse gases, sulfur oxides and nitrogen oxides is reduced, and the coagulation time of the geopolymer is prolonged; the problems of high production cost and serious pollution of the existing gangue-based geopolymer are solved.

The invention belongs to the technical field of antibacterial photodynamics, and provides antibacterial photodynamics for treating periodontitis by regulating ROS (reactive oxygen species) through microenvironment response and a preparation method of the antibacterial photodynamics. Comprising the following steps: preparing tin sulfide oxide by taking sodium dodecyl benzene sulfonate, tin chloride pentahydrate and L-cysteine as raw materials; zinc nitrate, copper nitrate, urea and thioacetamide are used as raw materials to prepare nano-enzyme; the antibacterial photodynamic material is prepared by taking indocyanine green, bacterial targeting peptide, nano enzyme, tin sulfide oxide and dihydromyricetin as raw materials. The microenvironment response antibacterial photodynamic force aiming at periodontitis infection and treatment characteristics is constructed, the antibacterial photodynamic force is constructed by a strategy of combining bacterial infection microenvironment response ROS programmed regulation and control, precise and long-acting treatment and immune regulation and control, and the curative effect and scene of the antibacterial photodynamic force for treating periodontitis are improved and widened.

The application relates to the technical field of metallurgical process control, in particular to a method for predicting the viscosity of smelting slag of oxidized-copper sulfide concentrate and application thereof. Based on the mass of specific raw material components in the slag of the to-be-detected oxidized-copper sulfide concentrate after oxygen-enriched top-blown smelting, the reference viscosity value of the slag is calculated by combining the pre-set smelting temperature, the pre-factor and the viscous activation energy; then the volume fraction of Fe3O4 obtained after oxidation is calculated according to the mass of the specific raw material components of iron; the predicted viscosity value of the slag is calculated by substituting the volume fraction of Fe3O4 and the reference viscosity value into an expression, which provides a basis for subsequent regulation and control of the smelting process based on the predicted viscosity value; and the problem of how to predict the viscosity of the slag of the oxidized-copper sulfide concentrate to optimize the smelting process is solved.