85 results about "Acidity/alkalinity" patented technology

Adhesive compositions including a multivalent metal salt, an multidentate acidic organic compound, and an aqueous medium are disclosed. The multivalent metal salt and multidentate acidic organic compound can include, as a mixture, a carbonate salt and / or carbonic acid. The aqueous medium can include pH adjusting agent such as sodium hydroxide. The adhesive composition, upon curing, can have a porosity of 10-50%. The adhesive composition, upon curing, can include a plurality of pores. The adhesive composition can be porous, and upon curing can have a plurality of pores having a pore size of between 20 μm to 200 μm. Methods of producing the adhesive composition are disclosed. Methods of using the adhesive composition are further disclosed.

The invention relates to the technical field of mineral materials and nano-enzyme catalysis, in particular to an iron-containing layered silicate mineral nano-enzyme as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out ball milling on the iron-containing layered silicate mineral, carrying out centrifugal washing, and drying to obtain the iron-containing layered silicate mineral nano-enzyme. According to the method, silicate minerals with a layered structure and rich iron content are adopted as raw materials, the ball-milled layered silicate mineral nano-enzyme is successfully prepared through a ball milling method, the crystallinity of the minerals is reduced, the surface acidity of the minerals is improved, and low-spin iron is generated, so that the affinity of the ball-milled minerals to H2O2 is enhanced; h2O2 is catalyzed to generate singlet oxygen and superoxide free radicals, so that the peroxidase-like activity of the ball-milled minerals is improved. The enzyme-like activity is improved by 10 times, high catalytic activity can still be kept under the neutral condition, and the method can be used for colorimetric sensing and antibacterial application of small biological molecules such as glucose, hydrogen peroxide and glutathione.

The invention discloses an alcaligenes faecalis UA strain, a product and application thereof, and a method for repairing an acid mine environment by acid-resistant urease-producing bacteria, and belongs to the technical fields of industrial microorganisms, microorganism application materials and environment repairing. The UA strain CGMCC No.33976 is found for the first time to produce the acid-resistant urease, the urease is stably produced in the environment with the optimum acidity of pH 4.5-pH 6.5 and the initial pH of 3.5-pH 7.5, and the enzyme production activity is the highest in the environment with the initial pH of 5.5-pH 6.5. The UA strain can effectively reduce acidity and remove metal ions in water in an acid mine wastewater real water sample, the removal rate of aluminum, manganese, zinc and cadmium exceeds 99%, and the removal rate of calcium, iron and lead is 92%-98%. The UA strain is screened from the acid mine environment, has biological safety, has industrial purposes of AMD in-situ direct treatment and acid mine environment in-situ remediation, does not need to add chemical agents to adjust the pH value of the environment, and has ecological safety and environmental sustainability.

The invention is suitable for the application field of electrolyte acidity determination, and provides a method for determining the acidity of an all-vanadium electrolyte based on a complexing mass difference method, and the method comprises the following steps: taking the all-vanadium electrolyte, and diluting the all-vanadium electrolyte into a pretreated all-vanadium electrolyte with the concentration of 0.05-0.1 mol / L; adding 1.5-2mL of a complexing masking reagent with the molar concentration of 1.5-2mol / L, weighing, and recording as M1; stirring and titrating, weighing and recording as M2; a quantitative determination method of mass difference is used for calculation, and the formula is {(M2-M1)-0.05} / A * C. In conclusion, a mass difference quantitative determination method is adopted, the vanadium complexing masking reagent is added, the adding amount and the pH value of the vanadium complexing masking reagent are controlled, a stable complex is formed through the complexing masking reagent, vanadium ions and impurity ions, the oxidation-reduction reaction and the precipitation reaction of the complex and sodium hydroxide are inhibited, and the accuracy of the acidity value of the all-vanadium electrolyte is improved.

The invention discloses a model and a method for predicting sensory acidity by using total acidity and effective acidity, and the method for constructing the prediction model for predicting sensory acidity by using total acidity and effective acidity comprises the following steps: adopting a specified acidic substance as a reference substance; the aqueous solutions of the acidic substances with different concentrations are represented by numerical values of different sensory acidity scales through professional evaluation personnel, and the sensory acidity scales are obtained; the method comprises the following steps: respectively preparing aqueous solutions of different addition amounts of buffer salt, hydrophilic colloid and protein under different concentrations of acidic substances, evaluating the sensory acidity of the aqueous solutions by professional evaluation personnel, and simultaneously detecting the pH value and titration acidity of the aqueous solutions; and performing linear regression analysis by taking the pH value and the titration acidity as independent variables and the sensory acidity as a dependent variable according to the data of the three variables of the sensory acidity, the pH value and the titration acidity in the database to obtain a prediction model. The sensory acidity of the product can be accurately predicted without tasting by sensory personnel.

The invention discloses a high-acidity complex flow state multi-parameter on-line monitoring system, an acid mixing vehicle and a method.The system comprises an acid mixing tank, the acid mixing tank is communicated with a powder pipeline, an acid pipeline, a clear water pipeline, a liquid medicine pipeline and a discharge pipeline, and the powder pipeline, the acid pipeline, the clear water pipeline, the liquid medicine pipeline and the discharge pipeline are all provided with monitoring devices; and the monitoring device is electrically connected with the intelligent control system. The device can record the instantaneous quantity and the cumulant quantity of the acid liquor, the clear water and the chemical additive on line in real time, generate an operation curve and a report at the same time, and can monitor the viscosity, the density and the acidity of the prepared acid liquor on line so as to confirm whether the quality of the acid liquor is qualified or not. According to the invention, monitoring data can be archived, later review and tracing are facilitated, manual sampling analysis is not needed, and potential safety hazards are eliminated.

The invention discloses a method suitable for waste acid purification and acidity improvement in the titanium dioxide industry, and belongs to the field of waste acid treatment. The invention aims at solving the problem of sulfuric acid waste caused by simple treatment of waste acid and solving the technical problems caused by precipitation in the sulfuric acid concentration process. The method comprises the following steps: S1, uniformly mixing cyclohexanol hexaphosphate, phosphate and a flocculating agent according to a certain proportion to obtain a purifying agent; s2, pouring the waste acid accounting for 30% of the total volume of the waste acid into the purifying agent, and stirring; s3, pouring the residual waste acid, and stirring; and S4, then carrying out filter pressing. According to the invention, waste of sulfuric acid caused by a neutralization precipitation method is avoided; the content of metal ions in the activated acid is low, and the problems of regular management and cleaning and equipment maintenance caused by precipitation are effectively avoided during evaporation, concentration and recycling.

This utility model belongs to the field of stainless steel pipe pickling technology, specifically relating to an acid concentration adaptive automatic pickling tank, including a tank body. A perforated plate is fixedly connected to the inner wall of the tank body. An acidity detector is embedded in the tank body. A sealing baffle is detachably connected to the tank body. A disturbance component is arranged below the perforated plate. A reflux component and a vibration component are arranged on the side wall of the tank body. The disturbance component includes a motor, which is fixedly mounted on a mounting frame. A bevel gear is fixedly connected to the output shaft of the motor. This acid concentration adaptive automatic pickling tank, through the use of the disturbance component, uses a motor to drive the agitator blades to rotate, agitating the acid solution. The reflux component, through synchronous transmission, rotates the spiral blades, transporting the acid solution from the bottom of the tank to the top, promoting the circulation and mixing of the upper and lower layers of acid solution, significantly reducing concentration stratification and avoiding excessive or insufficient acid replenishment due to local concentration deviations, thus ensuring stable pickling results.

The invention discloses an amide ether type hydroxamic acid compound and a preparation method and application thereof, the chemical structural formula of the amide ether type hydroxamic acid compound is as shown in formula I. In the formula I, R1 and R2 are independently selected from C1-C12 carbon chains; x is selected from O or S. The invention designs and synthesizes a novel hydroximic acid with an amide ether structure, and the amide ether type hydroximic acid compound can be widely applied to extraction and flotation of metal elements such as rare earth, zirconium, hafnium, cobalt, nickel and the like. The amide ether type hydroximic acid compound as an extracting agent has the advantages of high separation coefficient, no generation of highly toxic substances such as HSCN, wide extraction acidity range, large saturation capacity, capability of realizing complete reverse extraction by using relatively low-concentration sulfuric acid, and the like. # imgabs0 # formula I

The present invention discloses a method for preparing N-hydroxysuccinimide. The method uses a weakly acidic cation exchange resin as a catalyst. By reducing the acidity of the reaction system, product decomposition can be avoided, thereby improving product yield and quality. The method also reduces the reaction temperature, lowers equipment anti-corrosion requirements, extends equipment service life, reduces energy consumption, and is more conducive to industrial implementation. Furthermore, the catalyst is recyclable and does not require the addition of a stabilizer, making it more environmentally friendly.

The present invention belongs to the acidification process, and particularly relates to a separate acidification process for a weakly confined mining area in an acid-in-situ leaching mine. A separate acidification process for a weakly confined mining area in an acid-in-situ leaching mine, which includes the following steps: the first step: pumping and injecting clear water in a cycle; the second step: low-acid acidification; the third step: high-acid acidification; the fourth step: integrally connecting to the production system. The remarkable effects of the present invention are as follows: (1) During the acidification of a single mining area, the acidity of the leaching agent in the mining area can be flexibly adjusted. (2) Filtration of the extracted liquid during the acidification cycle stage is achieved, reducing the probability of secondary blockage caused by clay impurities entering the ore layer. (3) By adding clear water, the injection volume of the acidification leaching agent is increased, while the acidification intensity is enhanced and the groundwater level in the weakly confined mining area is raised. (4) When the uranium concentration in the extracted liquid of a single well reaches the design index, it can be connected to the production system at any time, and other pumping and injection units continue to cycle and acidify.

The invention discloses a metal-doped VOOH nano-enzyme material with a hollow spherical shell structure as well as a preparation method and application of the metal-doped VOOH nano-enzyme material, and belongs to the technical field of nano-materials and biological catalysis. The invention aims to solve the problems that the peroxidase-like activity of the existing pure-phase VOOH nano material is relatively limited, the electronic structure of the pure-phase VOOH nano material is not in the optimal state of catalyzing H2O2 decomposition, and the adsorption / desorption energy barrier of a reaction intermediate is relatively high. The chemical general formula of the metal-doped VOOH nano-enzyme material with the hollow spherical shell structure is M-VOOH, and M is a doped metal element. The preparation method comprises the following steps: 1, dissolving a precursor; 2, acidity adjustment; 3, doping metal; and 4, reduction and crystallization. According to the application, the catalyst serves as a peroxidase-like catalyst to catalyze decomposition of hydrogen peroxide.

The present invention discloses the UA strain of Alcaligenes faecalis, its products and applications, and a method for remediating acidic mine environments using acid-resistant urease-producing bacteria. These strains belong to the fields of industrial microorganisms, microbial application materials, and environmental remediation. The UA strain, CGMCC No. 33976, is the first acid-resistant urease-producing bacteria discovered. Its optimal acidity lies between pH 4.5 and pH 6.5, with stable urease production at an initial pH of 3.5 to pH 7.5 and highest enzyme activity at an initial pH of 5.5 to pH 6.5. In real samples of acidic mine wastewater, the UA strain effectively reduces acidity and removes metal ions, achieving removal rates exceeding 99% for aluminum, manganese, zinc, and cadmium, and 92% to 98% for calcium, iron, and lead. The UA strain, screened from acidic mine environments, exhibits biosafety and is suitable for in-situ direct treatment of AMD and in-situ remediation of acidic mine environments. It eliminates the need for chemical pH adjustment, ensuring ecological safety and environmental sustainability.

The invention provides a method for jointly detecting chromium and vanadium contents in high alloy steel, which comprises the following steps: dissolving and heating an alloy steel sample by using sulfuric acid and nitric acid to obtain a to-be-detected alloy sample; adding strong phosphoric acid and ammonium persulfate into the to-be-tested sample, boiling, cooling, dropwise adding an indicator, titrating to obtain a solution after vanadium titration, recording the volume of the solution adopted for titration, and calculating to obtain the vanadium content in the to-be-tested alloy sample; and diluting the solution after vanadium titration, adding silver nitrate and ammonium persulfate, boiling, heating, cooling, dropwise adding an indicator, titrating, recording the volume of the solution for titration, and calculating to obtain the chromium content in the alloy sample to be detected. According to the method, the acidity of the system is controlled by adjusting the addition amount of sulfuric acid and concentrated phosphoric acid, no extra catalyst is needed to oxidize chromium, other metals in a sample are not oxidized, and the vanadium element and the chromium element in the high alloy steel can be detected.

The standard substance for simulating the acidity of the product oil comprises benzoic acid and low-carbon alcohol, the purity of the benzoic acid is not lower than 99.8 wt%, and the low-carbon alcohol is one of methanol, ethanol or propanol; the concentration of the standard substance is 1 to 10 mgKOH / 100 mL, preferably 2 to 7 mgKOH / 100 mL. The acidity standard substance is good in accuracy, fills the blank that no acidity standard substance exists at present, and has wide application prospects in the aspects of calibration of a petroleum product acidity tester, confirmation of an acidity measuring method, instrument quality control and the like.

The present invention relates to a reforming catalyst comprising: - a porous support comprising essentially alumina; - platinum in a content comprised between 0.2 and 0.6% by weight; - at least one VA group element chosen from antimony, bismuth and phosphorus, in a content comprised between 0.2 and 0.8% by weight; - at least one IA group element chosen from lithium, sodium and potassium, in a content comprised between 0.004 and 0.2% by weight; - at least one IIIA group element chosen from gallium, indium and thallium, in a content comprised between 0.02 and 0.6% by weight.

The invention discloses a method for efficiently reducing elemental selenium from selenium-containing leachate based on ferrous sulfate, which comprises the following steps: taking the selenium-containing leachate obtained by oxidation and acid leaching, and adjusting the acidity of the leachate to 0.5-1.1 mol / L; ferrous sulfate is added into the acid-adjusted selenium-containing leachate according to the liquid-solid ratio of 2 mL: (1.0-1.4) g for a reduction reaction, the reduction reaction temperature ranges from 70 DEG C to 90 DEG C, the reduction reaction time ranges from 40 min to 80 min, and a reaction product I is obtained; and separating the precipitate of the reaction product I, washing and drying to obtain the elemental selenium. According to the method disclosed by the invention, the elemental selenium is extracted by reducing the selenium-containing leachate by adopting ferrous sulfate, and the reduction rate of selenium can reach 91% or above under limited conditions; under optimized conditions, the selenium reduction rate can reach 95.87%, which is significantly superior to that of existing processes such as a microbiological method.

The invention discloses an acidity detection device for electronic-grade fluorocarbon gas and a use method of the acidity detection device. The detection device comprises an absorption detection unit, an absorption liquid supplementing unit, a detection liquid supplementing unit and a control unit, the absorption detection unit comprises two absorption bottles, the first absorption bottle is connected with the second absorption bottle in series, a pipeline from gas to be detected is inserted into the first absorption bottle, a first gas distributor is arranged at the insertion end, and a second gas distributor is arranged at the bottom end of the pipeline from the first absorption bottle to the second absorption bottle; the absorption liquid supplementing unit comprises an alkali liquid storage tank and a first peristaltic pump; the detection liquid supplementing unit comprises an acid standard solution storage tank and a second peristaltic pump; the control unit comprises three pH meters which are respectively used for detecting the pH value of the liquid in the first absorption bottle, the pH value of the liquid in the second absorption bottle and the pH value of the acid standard solution. The acidity detection device and the detection method are high in automation degree, can be used for detecting fluorocarbon gas with the acidity content of 0.01 ppm or below, and are high in accuracy.

A ware washing machine includes a chamber for receiving a ware, the chamber having at least one spray zone in which liquid can be recirculated from a tank to a spray assembly for spraying the liquid onto the ware. The decalcification system is configured to deliver a decalcification solution to the tank. The controller is configured to operate in at least one vessel cleaning mode and at least one calcium removal mode of operation. The controller is configured such that, in a calcium removal mode of operation, the calcium removal system is controlled to perform a calcium removal operation wherein the controller (i) controls the calcium removal system to deliver the calcium removal solution into the tank and (ii) performs an acidity reduction process to reduce the acidity of the calcium removal solution.

The invention is applicable to the technical field of electrochemical analysis, and provides a method for measuring the acidity of an iron-chromium electrolyte based on a complexing mass difference method.The method comprises the following steps that a pretreated iron-chromium electrolyte is prepared, a complexing reagent playing a complexing role on iron and chromium ions is added into the pretreated iron-chromium electrolyte, and the weight is recorded as M1; the pretreated iron-chromium electrolyte added with the complexing reagent is stirred, then a standard alkali solution is dropwise added, after titration is stopped, the weight is weighed and recorded as M2, a quantitative determination method of mass difference is used for calculation, and the acidity calculation formula is {(M2-M1)-K} * C. In conclusion, a quantitative determination method for the quality difference is adopted, and the complexing reagent containing carboxyl is added, so that the side reaction of iron and chromium ions is reduced and avoided, the selectivity and the accuracy of determining the acidity of the iron-chromium electrolyte are improved, and the rapid and accurate determination of the free acid is realized.

Process for the rejuvenation of a catalyst comprising a metal from group VIII, a metal from group VIb and an oxide support not comprising zeolite, comprising the following stages:a) said catalyst is regenerated at a temperature of between 360° C. and less than 420° C. so as to obtain a regenerated catalyst comprising a certain content of carbon and sulfur and a proportion of crystalline phase determined by X-ray diffraction and characterized by a ratio of less than 0.6,b) said regenerated catalyst is brought into contact with an aqueous solution consisting of water, of phosphoric acid and of an organic acid having each acidity constant pKa greater than 1.5,c) drying is carried out at a temperature of less than 200° C.

The invention discloses a method for rapidly synthesizing an acidity-adjustable ZEO-1 molecular sieve, and belongs to the field of molecular sieve synthesis. According to the method, a seed crystal and an additional cationic auxiliary agent are introduced into a ZEO-1 molecular sieve synthesis system, and under the synergistic effect of the seed crystal and the auxiliary agent, rapid crystallization synthesis and wide-range acidity adjustment of the ZEO-1 molecular sieve under the condition of extremely low template agent dosage can be realized. According to the present invention, the synthesis process is efficient, simple and convenient, the ZEO-1 molecular sieve can be rapidly synthesized under the alkaline condition (taking OH <-> as the mineralizer) or the neutral condition (taking F <-> as the mineralizer), the ZEO-1 molecular sieve obtained through the method has characteristics of good crystallinity and high thermal stability, and the silicon-aluminum or silicon-boron atomic ratio can be adjusted in the large range of 4-200.

The present application relates to the technical field of computer, and provide a kind of water regulating method and system, the method comprises: obtaining turbidity sensor value and acid-base sensor value;Based on turbidity sensor value and acid-base sensor value respectively fuzzy operation, obtain turbidity fuzzy set and acidity fuzzy set;Based on turbidity fuzzy set and acidity fuzzy set, determine the incoming water credibility set, and based on incoming water credibility set and preset fuzzy control table, determine first credibility output;Based on first credibility output, determine target new incoming water flow, and with target new incoming water flow control new incoming water flow into water regulating system.The water regulating method provided in the embodiment of the present application is in the process of water regulating, according to turbidity sensor value and acid-base sensor value, fuzzy control operation is carried out, target new incoming water flow is determined, so as to control the amount of water flowing into water regulating system according to target new incoming water flow scientifically and accurately, so as to reduce water consumption, realize energy saving and emission reduction.

The application discloses a method for detecting the acidity of a circulating solution of electro-deposited cobalt, which comprises the following steps: removing oxidizing substances in the circulating solution of electro-deposited cobalt by potassium iodide in an acidic medium; reacting the potassium iodide with potassium iodate and acid to generate iodine molecules; titrating with a sodium thiosulfate standard solution until the solution changes from blue or blue-black to the original color of the solution, which is the end point; and calculating the acidity content according to the mass balance. The method can effectively remove the oxidizing substances in the solution to be measured, avoid the interference with the determination of the acidity content, and make the detection result more accurate. The sodium thiosulfate is innovatively applied to the detection of the acidity of the circulating solution of electro-deposited cobalt, and the sodium thiosulfate titration is used to replace the commonly used sodium hydroxide titration method, so that the interference of the original color of the light red solution with the color judgment of the end point of the sodium hydroxide (phenolphthalein as an indicator) is avoided.

The invention discloses a preparation method of a nitrogen removal material by a sulfur autotrophic denitrification method. The nitrogen removal material is prepared from elemental sulfur, calcium carbonate, a binder and trace elements. According to the invention, the influence of the manufacturing process does not float on the surface of a water body like elemental sulfur, the filler can slowly release effective components in the filler according to the total nitrogen content in the water body, and meanwhile, main components of the material can participate in actual reaction and do not generate precipitates, so that a user does not need to worry about residual waste residues after actual operation; wherein calcium carbonate not only provides an inorganic carbon source for sulfur autotrophic bacteria, but also can fully neutralize acidity generated in autotrophic denitrification; the problems that elemental sulfur particles can be discharged along with water flow, sodium thiosulfate needs to be quantitatively added, and waste residues left after sulfur-containing ore reaction need to be additionally treated are effectively solved, and the adverse effect of elemental sulfur type autotrophic denitrification acid production on the reactor is also solved.

The invention is broadly drawn to a process to introduce mesoporosity in faujasite zeolites with Si / Al<5 and unit cell sizes below 24.58 Angstrom by an inventive sequence of acid and base treatments, yielding superior physico-chemical and catalytic properties compared to the materials prepared according to the teachings known in the state of the art. Part of the invention relates to the acid step which is executed in the presence of a salt of which the anion is able to form multi-ligand complexes with aluminum, and of which a specific amount of cations are protonic (ca. 90% to 20% of the total cations with −3<pK<6). The superior properties may be the combination of an enhanced mesoporosity with a higher Brønsted acidity, a higher microporosity, a higher mesoporosity, a higher crystallinity, and / or combinations hereof.

A solid alumina composition is prepared from an acid-treated precursor composition, the precursor composition having an alumina hydroxide (Al(OH)3), aluminum oxyhydroxide (AlO(OH)), or a mixture thereof; where the solid alumina composition includes η-alumina characterized by having an X-ray powder diffraction pattern with peaks at 19.6±0.5° 2θ and 66.8±0.5° 2θ; and where the solid alumina composition has an acidity measured by an NH3-TPD test, characterized by: (1) an acid site density ranging from about 200 to 800 μmol / g; and / or (2) an acid strength distribution of: about 20%-70% weak acid sites (such as about 30-50%, about 30-40%, or about 35-40%), about 30%-80% medium acid sites (such as about 50-70%, about 60-70%, or about 60-65%), and about 0-20% strong acid sites (such as about 0-10%, about 0-5%, or about 0-2%).

The utility model relates to the field of liquor acidity detection, in particular to a device for quickly detecting liquor acidity, which comprises a base and an acidity detector body, a through hole is arranged on the upper end face of the base, electric sliders are symmetrically mounted on the front end face and the rear end face in the through hole, and a bottom cavity is mounted at the inner side end of each electric slider through a connecting frame. An acidity detector body is arranged behind the bottom cavity, a detection rod is installed on the upper end face of the acidity detector body through a connecting line, and a detection probe is embedded in the bottom of the detection rod. And the situation that the taste is affected due to overlarge acidity deviation caused by uneven mixing is avoided.

The present invention relates to a reforming catalyst comprising: - a porous support substantially comprising alumina; - platinum at a content of between 0.2 and 0.6% by mass; - at least one group VA element selected from antimony, bismuth and phosphorus at a content of between 0.2 and 0.8% by mass; - at least one group IA element selected from lithium, sodium and potassium at a content of between 0.004 and 0.2% by mass; - at least one group IIIA element selected from gallium, indium and thallium at a content of between 0.02 and 0.6% by mass.

The invention discloses a method for selectively leaching germanium based on acidity gradient regulation and control, and relates to the technical field of hydrometallurgy and rare metal recovery. Comprising the following steps: performing neutral leaching on a germanium-containing raw material to obtain neutral leaching liquid and neutral leaching residues; the neutral leaching residues are subjected to weak acid leaching, and weak acid leaching liquid and weak acid leaching residues are obtained; the weak acid leaching residues are subjected to high-acid leaching, meanwhile, sulfur dioxide is introduced for enhanced leaching, high-acid leaching liquid and high-acid leaching residues are obtained, the high-acid leaching residues are pulpified through the high-acid leaching liquid, and high-acid germanium-rich ore pulp is obtained; the high-acid germanium-rich ore pulp is subjected to ultrahigh-acid leaching, and ultrahigh-acid leaching liquid and ultrahigh-acid leaching residues are obtained; wherein the germanium recovery rate in the ultra-high acid leaching solution is greater than 80%. According to the method, the acidity, the temperature and the reduction leaching conditions are accurately controlled, the germanium recovery rate is maximized, selective separation is achieved, the process is simple, the cost is low, remarkable economic benefits are achieved, and the method has wide application prospects in the field of resource reutilization of germanium-containing smoke dust, germanium-containing slag and other complex raw materials.