385 results about "Lead zinc" patented technology

The invention relates to the technical field of artificial intelligence, and discloses an intelligent dosing method and system for lead zinc ore flotation to improve the efficiency, stability and economic benefits of a flotation process. The method comprises the following steps: calculating a first cross-modal feature and a second cross-modal feature, fusing the first cross-modal feature and the second cross-modal feature with a bubble image feature and an element grade feature through residual connection, and then processing to obtain a multi-modal feature sequence; inputting the multi-modal feature sequence of each time step into an LSTM network to obtain a corresponding LSTM hidden state sequence; calculating the time attention weight of the hidden state sequence of each time step in the time window, and performing weighted summation on the corresponding LSTM hidden state sequence according to the time attention weight to obtain a context vector in the time window; and finally, sharing the weighted and summed context vector serving as an input to a full connection layer corresponding to the two detection heads so as to respectively obtain probability distribution of predicted medicament types and a dose value of each medicament.

The invention discloses a quality-divided treatment and recycling method for lead-zinc beneficiation wastewater, and belongs to the technical field of beneficiation wastewater treatment.The method comprises the steps that beneficiation tail water is introduced into a Fenton reaction tank, a catalyst is added firstly, then hydrogen peroxide is added, a Fenton oxidation reaction is conducted, after the Fenton oxidation reaction is finished, the beneficiation tail water is introduced into a coagulation reaction tank, caustic soda liquid is added, and the mixture is stirred and mixed uniformly; adding a precipitating agent, a flocculating agent and a stabilizing agent, and flocculating and settling the precipitate; introducing the beneficiation tail water added with the treatment agent into a honeycomb inclined tube sedimentation tank, further flocculating and settling, then returning flocculated precipitates in a bottom tank to a coagulation reaction tank, and discharging redundant bottom mud into a tailing pond; and settled clear water enters a clear water tank and is used as production water for ore grinding classification and flotation operation. According to the invention, through quality-divided treatment-quality-divided recycling of the beneficiation wastewater, it is ensured that the beneficiation tail water meets the requirements of ore grinding and flotation production indexes, the treatment cost of concentrate overflow water and filtered water is reduced, and the purpose of 100% recycling of the beneficiation wastewater after quality-divided treatment is achieved.

The invention relates to the technical field of cement-based material preparation, and particularly discloses a preparation method of an anti-carbonization all-solid waste slag-sulphoaluminate cementing material, which comprises the following steps: (1) putting a wet material formed by lead-zinc tailing powder and water into a reaction container, sealing, and heating; and mixing the obtained product with iron powder and / or iron oxide powder and water, stirring, separating out a solid product, and heating and drying in an air atmosphere to obtain the anti-carbonization tailing powder. And (2) mixing the anti-carbonization tailing powder with sulphoaluminate cement powder, and carrying out mechanical grinding treatment to obtain the modified sulphoaluminate cement. And (3) uniformly mixing blast furnace slag powder, the modified sulphoaluminate cement, fly ash, waste gypsum powder, an alkali activator, gypsum and a water reducing agent serving as raw materials to obtain the cementing material. According to the invention, the resource utilization of industrial solid waste is realized, the carbonization resistance of the cementing material is effectively improved, and the service durability of the cementing material is improved.

According to the low-temperature separation and enrichment system and method for the elements in the multi-element complex metallurgical material, the multi-element complex metallurgical material is pretreated to form powder with a certain particle size, the powder is mixed with pulverized coal and subjected to a reduction reaction with hydrogen in a reaction chamber, meanwhile, different valuable metal elements are separated and enriched through the difference between melting points and boiling points, and the elements in the multi-element complex metallurgical material are separated and enriched. The method not only realizes efficient separation and recovery of elements such as iron, lead, zinc, potassium and sodium in the multi-element complex metallurgical material, but also solves the problems of high energy consumption, low reduction rate and the like in the reduction process of the multi-element complex metallurgical material, and has the advantages of short flow, less equipment, safety in operation, economy, high efficiency and easiness in industrial large-scale production.

The mining area tailing grading filling system is composed of a tailing collecting device, a grading module, a filling slurry preparing module, a conveying module and a filling module and is designed according to the characteristics that tailings of lead-zinc-silver ore and copper-tin-silver-zinc ore contain heavy metal and are complex in particle size. A heavy metal adsorption layer is arranged at the bottom of a collection pool of the tailings collection device, and a sulfide adsorbent is adopted, so that heavy metal ions such as lead, zinc and copper in the tailings can be effectively adsorbed; a cyclone of the grading module is made of a corrosion-resistant material, erosion of chemical substances in the tailings is prevented, the tailings are accurately graded, and grading of filling materials is optimized; the tailings with different particle sizes are accurately separated according to the characteristics of the tailings of the lead-zinc-silver ore and the copper-tin-silver-zinc ore by using the cyclone and multi-layer vibrating screen combined grading equipment; equipment parameters are adjusted to accurately control the granularity of the tailings, so that reasonable grading raw materials are provided for preparation of filling slurry, and the compactness and the stability of a filling body are improved.

The invention provides a poly-like flocculation flotation method for micro-fine particle galena and micro-fine particle sphalerite. The method comprises the following steps: firstly, mixing to-be-treated ore samples containing micro-fine particle galena and micro-fine particle sphalerite with the particle sizes of less than or equal to 20 microns with water to obtain to-be-treated ore pulp, then sequentially adding zinc sulfate, diethyldithiocarbamate, polyoxyethylene, polyaluminum chloride and a foaming agent, and carrying out air inflation flotation and foam scraping to obtain galena concentrate and tailings. ZnSO4 is adsorbed on the surface of the micro-fine-particle sphalerite in advance and generates a synergistic effect with polyaluminum chloride added subsequently, and N, N '-diethyldithiocarbamate is adsorbed on the surface of the micro-fine-particle galena in advance and generates a synergistic effect with polyoxyethylene added subsequently, so that galena hydrophobic floccules and sphalerite hydrophilic floccules with proper apparent particle sizes are formed; on one hand, the flotation recovery rate of the micro-fine particle galena can be increased, and on the other hand, mechanical entrainment of the micro-fine particle sphalerite can be reduced, so that the flotation separation efficiency of the micro-fine particle lead zinc ore can be effectively improved.

The invention provides a method for continuously measuring gold, silver, copper, lead and zinc in gold-based alloy, and belongs to the technical field of gold alloy element content detection. According to the method, through combined use of a gravimetric method, an electrolytic method and a titration method, by taking chemical means such as extraction and back extraction, electrochemistry and complex reaction as a theoretical basis, the aim of continuously and accurately measuring gold, silver, copper, lead and zinc in the gold-based alloy can be achieved through one-time sample weighing and sample digestion, the efficiency is improved, the complexity of multiple times of treatment is reduced, and the method is suitable for large-scale popularization and application. The method is accurate and reliable. Different masking agents, buffer reagents, precipitants and the like are selected in a targeted manner to be used in one solution one by one, and the problems that an element method is not applicable, measurement is out of range, and elements interfere with one another are solved.

The invention discloses a method for removing lead and zinc in underground water of a mining area by using carboxymethyl cellulose modified nano zero-valent iron, which is characterized in that the underground water of the lead-zinc mining area is treated by using the carboxymethyl cellulose modified nano zero-valent iron, and the carboxymethyl cellulose modified nano zero-valent iron comprises nano zero-valent iron particles, the surface of the modified nano zero-valent iron is modified with carboxymethyl cellulose, and the mass ratio of the carboxymethyl cellulose to the iron element in the modified nano zero-valent iron is 1: (5-6). According to the invention, the adopted carboxymethyl cellulose modified nano zero-valent iron has the advantages of large specific surface area, many active sites, good mobility, good dispersibility, strong anti-interference capability and the like, can quickly adsorb lead and zinc in the water body, and can stably fix lead and zinc in the carboxymethyl cellulose modified nano zero-valent iron for a long time; the method has the advantages of simple process, low cost, high treatment efficiency, good removal effect, capability of ensuring long-term stability of heavy metal ions and the like, and is particularly suitable for long-term repair and treatment of lead and zinc pollution in underground water in mining areas.

The invention relates to the technical field of industrial flue gas purification, in particular to a method for removing NOX in flue gas through cooperation of iron-extracted and depleted molten lead-zinc slag desulfurization tail liquid and an oxidizing agent, and the method comprises the following steps that S1, iron-extracted and depleted molten lead-zinc slag is ground till the particle size is not larger than 0.075 mm, water is added according to the solid-to-liquid ratio of 1: 200 g / mL, and ore pulp is prepared; s2, flue gas containing SO2 is introduced into the ore pulp, and SO2 in the flue gas is removed; s3, raising the temperature of the desulfurization tail liquid from which SO2 is removed to 25-65 DEG C, adding an oxidizing agent, introducing NOX-containing flue gas, and removing NOX in the flue gas; according to the method, the nitric oxide can be effectively removed by utilizing the desulfurization tail liquid of the molten lead-zinc slag after iron extraction and dilution, so that the comprehensive utilization of resources is realized.

The invention discloses a beneficiation method for tin-silver symbiotic polymetallic ore and application of the beneficiation method, and relates to the technical field of mineral separation. Comprising the steps that after tin-silver symbiotic polymetallic ore is ground, undersize minerals are obtained through a high-frequency screen, silver-copper flotation is conducted on the undersize minerals, and silver-copper concentrate and silver-copper tailings are obtained; the silver-copper tailings are subjected to lead-zinc-sulfur flotation, and lead concentrate and zinc-sulfur tailings are obtained; and the zinc-sulfur tailings are subjected to zinc-sulfur flotation, and zinc-sulfur concentrate and tin-sulfur tailings are obtained. The concentration of ore pulp in the ore grinding process is controlled, it is guaranteed that cassiterite and sulfide minerals are fully dissociated, then a first inhibitor is added in the lead-zinc-sulfur flotation process, the valuable metal recovery efficiency can be enhanced by optimizing the flotation process and collaboratively innovating a reagent formula according to the complex characteristics of tin-silver symbiotic polymetallic ore, and the recovery rate of the tin-silver symbiotic polymetallic ore is increased. The contents of silver, copper and tin in the tailings are obviously reduced, and efficient utilization of resources and reduction of solid wastes are realized.

The invention relates to the technical field of heavy metal adsorption, in particular to a preparation method and application of a heavy metal adsorption material based on lead-zinc tailings, and the preparation method comprises the following steps: S1, grinding the lead-zinc tailings until the particle size is less than 75 microns, and drying; s2, putting the lead-zinc tailings treated in the step S1 into a microwave reactor, and carrying out microwave thermal modification treatment for 5-15 minutes at the power of 600-1000W; s3, the lead-zinc tailings subjected to microwave treatment are soaked in a sodium sulfide solution with the mass concentration being 0.5%-2%, and surface vulcanization treatment is conducted; and S4, heating the lead-zinc tailings subjected to sulfuration treatment to 800-950 DEG C at the speed of 3-10 DEG C / min under the protection of nitrogen, calcining for 1-3 hours, cooling, washing and drying to obtain the heavy metal adsorption material. The adsorption material with a good heavy metal treatment effect is synthesized through microwave thermal modification assisted by surface vulcanization treatment and high-temperature sintering of the lead-zinc tailings.

The application discloses a multi-metallic sand tin ore beneficiation process, adopts the equal floatation-mixed floatation-gravity separation backwater process, lead concentrate yield is 0.39%, lead grade is 16.62%, recovery rate is 15.93%; zinc concentrate yield is 1.08%, zinc grade is 39.32%, zinc recovery rate is 46.92%, the gravity separation indexes are as follows: tin concentrate yield is 0.39%, tin content is 40.57%, tin recovery rate is 51.66%; low-grade tin concentrate yield is 0.51%, tin content is 3.17%, tin recovery rate is 5.28%. The beneficiation process recovers lead, zinc and tin in the sand tin ore, has high beneficiation indexes and good beneficiation effect.

The invention relates to the technical field of non-ferrous metal metallurgy, in particular to a comprehensive recovery method for low-grade lead-zinc oxidized ore resources. According to the method, through a side-blown smelting furnace oxidation process and a fuming furnace reduction process, firstly, pyrometallurgy oxygen-enriched smelting is carried out, high-lead smoke dust and zinc-germanium-containing slag are produced, zinc oxide smoke dust is obtained through fuming reduction volatilization, then the zinc oxide smoke dust enters a zinc hydrometallurgy process, the high-lead smoke dust enters a pyrometallurgy lead smelting process for batching, and the zinc-germanium-containing slag is obtained. And finally, lead metal (rich in silver), zinc metal, germanium concentrate and tailings are generated. The method aims at achieving comprehensive recovery of low-grade lead-zinc oxidized ore resources by improving the recovery rate of lead and zinc in the low-grade lead-zinc oxidized ore and conducting cooperative treatment on silver, germanium and cadmium at the same time, and a new thought is provided for comprehensive recovery and large-scale industrial production of the low-grade lead-zinc oxidized ore resources.

The invention provides a lead zincate niobate-lead zirconate titanate based perovskite ceramic material and a preparation method thereof, the general formula of the chemical composition of the perovskite ceramic material is (1-x) Pb [(Zn1 / 3Nb2 / 3) 0.3 (Zr1 / 2Ti1 / 2) 0.7] O3-xBi (Zn1 / 2Ti1 / 2) O3, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, xlt; 1; a Bi (Zn1 / 2Ti1 / 2) O3 component is introduced into a lead zincate niobate-lead zirconate titanate matrix, local structure distortion is formed in a perovskite structure by utilizing the high polarizability of Bi < 3 + > and the synergistic effect of (Zn1 / 2Ti1 / 2) < 3 + > composite ions, and meanwhile, a long-range ordered perovskite framework is kept; wherein lead zincate niobate-lead zirconate titanate is used as a matrix to provide a high piezoelectric basis, and due to the introduction of Bi (Zn1 / 2Ti1 / 2) O3, a high Curie temperature is kept through a hardness-like effect, so that the material shows more comprehensive and excellent piezoelectric constant and coercive field and excellent wide-temperature piezoelectric thermal stability compared with commercial soft / hard piezoelectric ceramics.

The invention provides a complete parallel flow electrolysis device and method.The device comprises a liquid feeding tank, multiple electrolytic tanks and a liquid return tank which are sequentially arranged, a plurality of first through holes are formed in the side, close to the electrolytic tanks, of the liquid feeding tank, and the multiple electrolytic tanks are sequentially arranged; a plurality of second through holes and a plurality of third through holes are formed in the two sides of each electrolytic cell respectively, a plurality of fourth through holes are formed in the side, close to the electrolytic cells, of the liquid return tank, the first through hole of the liquid supply tank corresponds to the second through hole of the first electrolytic cell, and the second through holes and the third through holes of the adjacent electrolytic cells correspond to one another. And the third through hole of the last electrolytic tank corresponds to the fourth through hole of the liquid return tank. According to the complete parallel flow electrolysis device, parallel and uniform flow of the electrolyte between the polar plates in the electrolysis device is achieved, and the complete parallel flow electrolysis device can be used for electrolysis of metals such as copper, lead, zinc, nickel and manganese.

Aiming at the problem of low resource utilization value of the existing copper slag, the invention discloses a method for resourceful treatment of the copper slag, through a pyrogenic process and wet process mineral separation coupling method of high-temperature reduction, selective corrosion, magnetic-gravity combined separation and selective leaching, the transformation form and trend of key elements are accurately regulated and controlled, and the utilization rate of the copper slag is improved. The purposes of extracting lead, zinc, iron, copper and silicon elements in the copper slag step by step and converting the elements into corresponding high-value products are achieved. In addition, through process optimization and improvement, a low-temperature reaction system and a reagent cyclic regeneration mechanism are adopted, energy and chemical consumption is effectively reduced, generation of secondary hazardous waste is basically eradicated, and a new solution path is provided for green, high-value and efficient utilization of metallurgical solid waste.

The invention discloses a method for low-alkalinity flotation of lead-zinc (silver-containing) polymetallic ore based on a heterocyclic sulfydryl coordination polymer, which comprises the following steps of: adjusting the pH value of ore pulp to 7.5 + / -0.3, and sequentially carrying out roughing, scavenging and concentration by adopting a composite collecting agent according to a gradient flotation procedure; wherein the mass concentration of the ore pulp is 20-40%; the adding amount of the composite collecting agent is 150-300g / t of ore pulp; the composite collecting agent is composed of a modified heterocyclic sulfhydryl compound, C12-C18 alkylamine polyoxyethylene ether and a star-shaped branched nonionic surfactant according to the mass ratio of 1: (1-3): (0.5-2). According to the method, the complex silver polymetallic ore is subjected to efficient flotation under the low-alkalinity condition by applying the composite collecting agent based on the heterocyclic sulfydryl coordination polymer. Through deep exploration and optimization of a flotation reagent system, process parameters and a microcosmic action mechanism, the recovery rate of metal such as silver, copper and lead is remarkably increased, and the ore dressing cost is greatly reduced.

The invention relates to an iron ion inhibitor composition and application thereof. The iron ion inhibitor composition is prepared by combining 2 to 2.5 parts of soluble salt of oxalic acid, 1 to 1.5 parts of ammonium phosphate compound and 1.0 to 1.5 parts of triethanolamine. The iron ion inhibitor composition can be added in the ore grinding process, after ore grinding or in the flotation pulp mixing process of copper-lead-zinc oxide minerals, and then conventional flotation pulp mixing and flotation separation operation is carried out. The concentration of iron ions in ore pulp can be effectively reduced, iron species adsorbed on the surface of the ore can be stripped, accordingly, the flotation recovery rate and the concentrate grade of the copper-lead-zinc oxide ore are remarkably improved, agent consumption is reduced, and the method has the advantages of being simple in process, wide in applicability and the like.

The application discloses application of a combined inhibitor in associated gold-silver-lead-zinc sulfide ore flotation separation, wherein the combined inhibitor is a combination of zinc sulfate and methionine, and the mass ratio of the two combined is 2:1; the combined inhibitor is used to realize associated gold-silver-low-copper-lead-zinc polymetallic sulfide ore flotation separation in a low-alkali environment, has a good separation effect, high concentrate grade, effectively reduces the zinc content of lead concentrate, improves the gold and silver recovery rate in the lead concentrate, and has important significance for improving the quality and efficiency of associated gold-silver-low-copper-lead-zinc polymetallic sulfide ore flotation separation. In addition, the methionine in the combined inhibitor is a small-molecule organic substance, is non-toxic and non-polluting, and is easy to degrade, thereby avoiding the problems of traditional inhibitors, such as toxicity, environmental unfriendliness and human body unfriendliness. The combined inhibitor has small dosage, stable effect, and good process application prospect.

The application discloses a beneficiation method for complexly-embedded high-sulfur-content lead-zinc sulfide ore, which comprises one-stage rough separation, three-stage cleaning and three-stage scavenging; a zinc flotation operation comprises one-stage rough separation, three-stage cleaning and three-stage scavenging; a sulfur flotation operation comprises one-stage rough separation, one-stage cleaning and one-stage scavenging; a sulfur concentrate dezincing operation comprises one-stage rough separation, one-stage cleaning and one-stage scavenging, calcium oxide is added in the one-stage cleaning process, a zinc collecting agent is added in the one-stage scavenging process, and tailings after the one-stage cleaning and concentrate after the one-stage scavenging are returned to the one-stage rough separation of the sulfur concentrate dezincing operation. The column machine is combined to improve the recovery rate of useful minerals, the flotation column is used for scavenging to improve the recovery rate of fine particles, the sulfur concentrate is subjected to the dezincing operation, and the dezincing product is returned to the zinc rough separation operation, so that the recovery rate of zinc minerals is improved, and through the column machine combined with the middling regrinding mode, the recovery rates of lead and zinc in the complexly-embedded high-sulfur-content lead-zinc sulfide ore are improved.

The present invention discloses a method for removing impurities from waste acid and fully recycling the waste acid. The method comprises the following steps: introducing hydrogen sulfide into the waste acid for a sulfidation reaction, removing arsenic sulfide and mercuric sulfide precipitates formed during the reaction; continuing to introduce hydrogen sulfide for a step-by-step sulfidation reaction, adding an iron-containing substance to adjust the reaction pH and ORP, and recovering the copper, lead, and zinc sulfide slag precipitates formed during the reaction in a step-by-step manner; adding an iron-containing substance for a neutralization reaction, controlling the pH and ORP, promoting the reaction between iron ions and arsenate, and removing the ferric arsenate precipitate formed during the reaction; adding an adsorbent for an adsorption reaction, and removing fluorine-containing and thallium-containing components by adsorption; introducing an oxidant for an oxidative hydrolysis reaction, controlling the degree of hydrolysis, and preparing polyferric sulfate. The present invention utilizes the iron-containing substance to remove impurities from waste acid, thereby achieving deep impurity removal and full resource utilization of waste acid.

The invention provides a method for purifying and removing lead in a sodium zincate solution, the method for purifying and removing lead in the sodium zincate solution comprises a main reaction step and a post-treatment step, and the method comprises the following steps: heating an alkaline leachate sodium zincate solution to 50-90 DEG C, adding a displacement precipitation agent while stirring, controlling the addition amount of the displacement precipitation agent to be 0.5-3 g / L, reacting for 0.5-2.5 h, and carrying out solid-liquid separation, and filtering to remove the lead precipitate so as to complete the removal of lead in the sodium zincate solution, and the removal rate of lead reaches 99.15% or above. The lead-containing sodium zincate solution is an alkaline leaching solution obtained after NaOH alkaline leaching is carried out on the finely-ground and screened Lanping oxygen-sulfur mixed lead-zinc concentrate, and the replacement precipitant is zinc powder.

The invention discloses an advanced treatment and recycling method for lead-zinc beneficiation wastewater based on biological reduction, and belongs to the technical field of beneficiation wastewater treatment.The method comprises the following steps that the lead-zinc beneficiation wastewater is sequentially subjected to flocculent precipitation and CO2 hardness reduction pretreatment, heavy metal and COD removal through a bioelectrochemical system, methanol generation and advanced oxidation deep COD removal; and neutralizing, precipitating and removing iron and sulfate radicals to obtain treated water, and carrying out dissimilatory iron reduction treatment on the water-containing iron sludge for advanced oxidation. According to the method, CO2 and iron resources can be recycled, COD and heavy metal in the wastewater are deeply removed, the hardness and sulfate radicals are remarkably reduced, and the treated water can be completely recycled to a mineral separation procedure or discharged after reaching the standard.

The invention relates to a method for adsorbing and recovering germanium from lead-zinc smelting ash leachate, which comprises the following steps: adsorbing germanium in the leachate by preparing modified activated carbon, calcining the modified activated carbon adsorbing germanium, and realizing efficient enrichment and recovery of germanium through synergistic treatment. The process route comprises the following steps: by taking wood or coconut shells and other raw materials as an activated carbon base material, pretreating, loading an additive, and activating to prepare the high-specific-surface-area selective adsorption modified activated carbon; the modified activated carbon and the germanium-containing leachate are mixed according to the solid-liquid ratio, adsorption is performed under certain conditions, the activated carbon after adsorption is calcined in an oxygen atmosphere, calcined slag with the germanium content larger than or equal to 5% is obtained, and the subsequent germanium extraction efficiency is remarkably improved. According to the method, the selective adsorption capacity of activated carbon to germanium is enhanced through modification, enrichment of germanium by more than 50 times is achieved in combination with a calcination process, and the method has the advantages of simple process, low cost, high recovery rate and the like and has remarkable economic benefits and environmental protection benefits.

The utility model discloses a mine tunnel supporting device for lead-zinc mining, and relates to the technical field of mining engineering. The lifting device comprises a bottom plate, a lifting assembly is arranged on the upper surface of the bottom plate, the lifting assembly comprises a supporting column vertically connected to the upper middle portion of the bottom plate, a hollow column is arranged on the peripheral side of the supporting column in a sleeved mode, limiting blocks distributed at equal intervals are arranged on the two inner side walls of the hollow column, and hinged supporting blocks are arranged on the upper edges of the two side walls of the supporting column. The end of a reset spring connected to the side wall of the supporting block in parallel is connected to the side wall of the supporting column, and the upper surface of the supporting block is erected on the lower surface of the limiting block. A supporting assembly is arranged on the upper surface of the hollow column. The lifting assembly is arranged to support the mine tunnels with different heights, the practicability is improved, the supporting assembly is arranged, the stability of the movable plate and the supporting plate is improved, the stability effect of supporting the lead-zinc mine tunnels is improved, the lead-zinc mine tunnels with different sizes are supported, and the practicability is improved.

The invention discloses a smelting process of high-iron high-lead zinc concentrate, and belongs to the technical field of comprehensive utilization of resources, and the method specifically comprises the following steps: carrying out normal-pressure leaching on the high-iron high-lead zinc concentrate and oxygen pressure leaching liquid to produce normal-pressure leaching residues and normal-pressure leaching liquid, and carrying out mineralization iron removal on the normal-pressure leaching liquid to produce iron concentrate; the normal-pressure leaching residues are subjected to traditional sulphide ore dressing, and high-lead residues and low-lead zinc concentrate are produced; the low-lead zinc concentrate and the zinc hydrometallurgy electrolyte are subjected to high-temperature oxygen pressure leaching, silver-sulfur concentrate and ferric-iron-containing high-acid oxygen pressure leaching liquid are produced, and the ferric-iron-containing high-acid oxygen pressure leaching liquid is returned to be used for normal-pressure leaching; directly hot-melting and filtering the silver-sulfur concentrate to produce sulfur and silver concentrate; according to the method, the normal-pressure leaching, mineral separation and oxygen pressure leaching combined process is adopted, the leaching process and the oxygen pressure leaching slag treatment process are simplified, high-lead slag, iron ore concentrate and silver-sulfur concentrate are directly produced in the smelting process instead of mixed slag with low content of lead, iron, sulfur and silver in a traditional oxygen pressure leaching process, the silver enrichment ratio in final leaching slag is high, and the sulfur recovery process is simple.

The application discloses a method for comprehensively recovering valuable metals in gold smelting slag, and belongs to the technical field of metallurgical solid waste resource utilization, and comprises the following steps: S1, ingredient mixing: uniformly mixing gold smelting slag, a chlorinating agent and a reducing agent according to a mass ratio, preparing into a pellet, and obtaining a mixture; S2, one-step chlorination and reduction roasting: after the mixture obtained in the step S1 is dried, the mixture is sent into a roasting furnace to be roasted, and chlorination volatilization of the valuable metals and reduction magnetization of iron oxides are simultaneously completed in the same roasting system; through accurate proportioning of the chlorinating agent and the reducing agent and synergistic regulation of the roasting temperature and the weak reducing atmosphere, the chlorination volatilization of gold, silver, copper, lead and zinc and the reduction magnetization of iron oxides are simultaneously completed in a single reactor and in the same roasting process, the problems of mutual contradiction between chlorination and reduction atmosphere and mutual restriction of recovery rates of two-step roasting processes are solved, the total roasting time is effectively shortened, and the comprehensive energy consumption is effectively reduced.

The utility model discloses a kind of lead-zinc smelting slag's crushing device including feed hopper, device body, feed hopper is set in the top of device body, device body is connected with control cabinet electricity telecommunication;The device body further include ash removal device, roller crusher, screening device, cone crusher, processing mechanism, ash removal device is respectively set in the top of roller crusher and cone crusher, screening device is set in the lower of roller crusher, cone crusher is set in the right side of screening device, processing mechanism is set in the lower of screening device and cone crusher.The function of the utility model is to prevent harmful substances in smoke dust in crushing process from spreading to the environment, causing pollution to the surrounding environment;Dust in slag before crushing is screened out, reducing the accumulation of ash slag in crushing treatment step, ash slag is carried down by spraying water, to prevent the effect of accumulated ash slag on crushing material;Prevent qualified material from being excessively crushed, ensure that the effect of crushing is uniform.

The invention provides an integral structure electrolytic cell with side holes, the integral structure electrolytic cell comprises a first cell wall and a second cell wall which are oppositely arranged, a plurality of first through holes are formed in the first cell wall in an array mode, a plurality of second through holes are formed in the second cell wall in an array mode, and the first through holes and the second through holes are oppositely arranged. The first through holes and the second through holes are used for allowing electrolyte to flow through, the number of the first through holes is the same as that of the second through holes, the positions of the first through holes correspond to those of the second through holes, and the sizes of the first through holes and the second through holes which are opposite are the same. According to the electrolytic bath with the integral structure and the side face provided with the holes, the electrolyte uniformly flows in the electrolytic bath in parallel to the polar plate in the flowing mode, the flowing directions of the electrolyte in the electrolytic bath are consistent, the solubility polarization is avoided, and the electrolytic bath has the advantages that anode mud is easy to settle, the power consumption is small, and the equipment cost is low. The method can be used for electrolysis of metals such as copper, lead, zinc, nickel and manganese.

This invention discloses a flue gas desulfurization and denitrification treatment device and method for lead-zinc smelting. It relates to a flue gas treatment device, including a desulfurization component and a denitrification component. The desulfurization component includes a treatment chamber, with an inlet pipe fixedly connected to its side wall and a first and second partition fixedly connected to its inner wall. The inlet pipe communicates with the space between the first and second partitions. The first partition is located above the second partition, and a bubbling desulfurization pipe is fixedly connected below the second partition, located at the bottom of the treatment chamber. After entering the treatment chamber, the flue gas undergoes preliminary desulfurization treatment through spraying from the spray pipe. Then, the flue gas enters the space below the second partition for secondary treatment via bubbling. Finally, the treated flue gas enters the space above the first partition for further purification, significantly improving the treatment effect. Furthermore, the device adjusts the spraying method accordingly, greatly enhancing the adequacy of the spray desulfurization process and resulting in excellent performance.