135 results about "Lead smelting" patented technology

The invention relates to a slag performance regulation and control method for large-proportion collaborative smelting of multi-source lead-based solid waste in flash lead smelting, belongs to the technical field of non-ferrous metal smelting, and mainly solves the problem of collaborative regulation and control of the viscosity performance of slag by factors such as ZnO content, Al2O3 content, CaO / SiO2 mass ratio, alkalinity and the like of FeOx-CaO-SiO2-ZnO-PbO-Al2O3 system slag so as to realize low-carbon and safe smooth smelting. The method comprises the following steps: (1) reasonably controlling the contents of elements such as Zn and Al in a mixed material fed into a furnace and the addition amount of a CaO flux and a SiO2 flux, and starting smelting; (2) in the flash smelting process, the content of ZnO in the slag is controlled to be lower than 25 wt%, the content of Al2O3 in the slag is controlled to be lower than 6 wt%, the mass ratio interval of CaO / SiO2 is 0.30-0.50, the alkalinity interval is 1.8-2.3, and flash smelting and slag-lead separation are completed; and (3) normally discharging slag and lead. According to the method, in the production practice of flash lead smelting, the problem that slag and lead are difficult to separate due to collaborative smelting of large-proportion and multiple types of high-zinc and high-aluminum solid wastes can be solved, the safe, energy-saving and efficient lead smelting process is guaranteed, and the production capacity of the flash lead smelting furnace for treating the multi-source lead-based solid wastes is improved.

The invention relates to the technical field of waste heat recovery, and particularly discloses an efficient waste heat recovery system based on secondary lead smelting and a cascade using method thereof.The efficient waste heat recovery system comprises a smelting furnace, an air preheater, a cyclone dust collector, a box type dust collector, a waste heat boiler and a raw material drying machine which are sequentially connected; a vertical cylinder with the lower end extending out is concentrically fixed to the top of the heat preservation outer shell, a heat exchange rotor is rotationally arranged at the upper end of the vertical cylinder, the interior of the heat exchange rotor is evenly divided into a plurality of sealed fan-shaped spaces, the fan-shaped spaces are filled with phase change heat storage materials, and a plurality of sets of vertical tubes are arranged in each fan-shaped space. A plurality of groups of radial through heat exchange tubes are arranged in each fan-shaped space; according to the waste heat efficient recovery system and the waste heat cascade using method, on the premise that high-temperature flue gas waste heat is efficiently utilized, corrosion of high-temperature strong acid gas to the heat exchange pipes and the heat exchange media can be avoided, and the service life of the air preheater is guaranteed.

The utility model relates to a secondary lead smelting waste gas treatment device which is characterized in that the secondary lead smelting waste gas treatment device comprises a pipeline a connected with the output end of a secondary lead smelting furnace, a pipeline b spaced from the pipeline a and a waste gas adsorption assembly arranged between the pipeline a and the pipeline b, and the waste gas adsorption assembly is sleeved with a shell; in the rotating process of the waste gas adsorption assembly, a new adsorbent is connected between the pipeline a and the pipeline b, meanwhile, an old adsorbent is transferred out between the pipeline a and the pipeline b, and regeneration work is completed; the technical problems that waste gas treatment is incomplete, and a new filter element cannot be updated in the continuous gas outlet process are solved.

The invention discloses a method for recycling zinc smelting tailings, which comprises the following steps of: sieving the dried zinc smelting tailings, classifying and sampling, leaching coarse fraction by hydrochloric acid to obtain a leaching solution I and lead chloride slag, mixing the leaching solution with fine fraction tailings, adjusting the pH value of the solution to be neutral to obtain neutralized slag and neutralized liquid, and recycling the neutralized slag and the neutralized liquid. The neutralized liquid is subjected to replacement to obtain replacement slag and a replacement liquid, the replacement liquid is subjected to iron removal purification electrodeposition casting to obtain a zinc ingot, the replacement slag is subjected to acid leaching again to obtain copper slag and a leaching solution, and the germanium-gallium-indium leaching solution is subjected to extraction and electrolytic refining to obtain germanium concentrate, metal gallium and metal indium; the lead chloride slag is leached through sulfuric acid to obtain lead sulfate slag, the lead sulfate slag is subjected to pyrogenic process lead smelting to recover lead metal, a leaching solution II is subjected to hydrochloric acid and sulfuric acid separation, and a sulfuric acid solution and a hydrochloric acid solution are obtained and can be recycled. The method is high in recovery rate and low in production cost, and the purposes of low-pollution, low-carbon and economical industrial production and rare and precious metal recycling are achieved.

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 relates to a high-antimony-arsenic-precious-lead treatment method, and belongs to the technical field of non-ferrous metal pyrometallurgy. The method comprises the following steps: carrying out vacuum fractionation on high-antimony-arsenic precious lead, and condensing from bottom to top through a graphite condensing disc for two-stage fractional condensation and a stainless steel condensing disc for fractional condensation at the topmost end in sequence from bottom to top to obtain a lead-antimony alloy, crude antimony and crude arsenic as well as a residual high-antimony-copper-silver-gold alloy; the high-antimony copper-silver-gold alloy is subjected to oxidation blowing, and the copper-silver-gold alloy, oxidizing slag and smoke dust are obtained; and carrying out vacuum distillation on the copper-silver-gold alloy to obtain crude copper and crude silver. The method can be used for treating high-antimony and high-arsenic coexisting noble lead materials, realizes open-circuit (recovery in the form of simple substances) of arsenic and antimony, shortens the smelting period of the noble lead, reduces oxidation blowing, reduces the recovery cost of noble metals, greatly reduces the environmental protection pressure, and has the characteristics of low energy consumption, simplicity in operation, high direct recovery rate of metals, high total recovery rate of metals and the like.

The invention relates to the technical field of wastewater treatment, in particular to a multi-stage treatment method and system for lead smelting wastewater. The method comprises the following steps: acquiring water quality data of the multi-source lead-acid storage battery smelting wastewater, and based on the water quality data, analyzing to obtain a battery wastewater multiphase feature set; on the basis, the information of the stabilized intermediate water body is obtained by dynamically adjusting the hydrogen ion concentration, breaking a complexing structure and preferentially separating fluoride; on the basis, the antimony valence state and the antimony concentration are monitored in real time, the oxidizing agent type and the reaction intensity are matched in a self-adaptive mode, oriented efficient conversion of antimony is achieved, and low-antimony pre-sedimentation water outlet information is obtained; on the basis, according to the dynamic proportion of the inlet water hydrogen ion concentration to the lead and antimony ions, a precipitation path control instruction is automatically switched, a purified water body with lead and antimony synchronously and deeply removed is obtained, and a lead smelting wastewater multi-stage treatment log is output. Harmful pollutants in the lead smelting wastewater process are efficiently removed, the method adapts to water quality fluctuation, consumption reduction and cost saving are achieved, compliance treatment of wastewater is achieved, and environment-friendly and economic values are achieved.

The invention discloses a resourceful treatment method for crude lead smelting smoke containing indium, germanium, tin and antimony, and belongs to the technical field of comprehensive utilization of crude lead smelting smoke. Firstly, the crude lead smelting smoke is pulpified with a crude hydrochloride solution, then sulfuric acid is injected for curing, then dilution leaching is conducted, leaching residues are fed into crude lead smelting ingredients, and the crude lead smelting ingredients are obtained; transferring the leachate into a selective extraction separation system to selectively extract and separate tin, germanium and indium to respectively obtain tin oxide concentrate, germanium oxide concentrate and crude indium, selectively reducing and precipitating cadmium in indium extraction raffinate to obtain sponge cadmium, briquetting and casting to produce crude cadmium, concentrating the cadmium-removed raffinate with a membrane, and promoting cold crystallization by ethanol to separate out zinc sulfate crystals, and evaporating the mother liquor to remove ethanol, regenerating a crude hydrochloride solution, and returning to leach for use. The method comprehensively recovers seven metals including lead, antimony, tin, germanium, indium, cadmium and zinc, is high in separation coefficient, simple and smooth in process, low in investment, high in benefit, relatively good in industrial application value, high in metal leaching rate and recovery rate and low in treatment energy consumption, and basically realizes zero emission of three wastes.

The invention discloses a secondary lead smelting high-temperature flue gas waste heat recycling device, and belongs to the technical field of waste heat recovery, the secondary lead smelting high-temperature flue gas waste heat recycling device comprises a vertical frame, an outer ring cylinder and a center cylinder concentrically arranged in the outer ring cylinder, and the bottom of the center cylinder is connected with a dust hopper for flue gas coarse dust removal; an annular cavity between the outer annular cylinder and the center cylinder forms a heat exchange water area, and multiple rows of heat exchange pipes are annularly arranged in the heat exchange water area. The core of the invention lies in that a three-stage heat exchange path is constructed, flue gas is settled in the central cylinder from bottom to top and subjected to primary heat exchange, and then flows through all heat exchange tubes from top to bottom and then from bottom to top in sequence, so that efficient cascade heat exchange is realized; steam generated by the system is creatively utilized to drive a turbine mechanism, shovel strips in all heat exchange pipes are driven to rotate synchronously, and online self-cleaning is achieved; the alkali spraying mechanism is arranged at the top of the central cylinder, acid gas is neutralized from the source, and corrosion is effectively prevented; according to the invention, the integration of sedimentation, deacidification, heat exchange and self-deashing is realized, and the problems of large occupied area, easiness in blockage, low efficiency and serious corrosion of a traditional system are solved.

The utility model discloses a lead melting furnace with a dual-seal lead discharging structure, which relates to the technical field of lead melting and comprises a furnace body and a lead discharging component, the lead discharging component comprises a sealing rod and a lead discharging pipe, the lead discharging pipe is welded at the bottom of the furnace body, and a sealing ball plug is fixed at the liquid outlet end of the lead discharging pipe through a flange. A detachable liquid inlet die sleeve is fixed to the liquid inlet end of the lead discharging pipe, and a conical inclined face is arranged at the upper end of the liquid inlet die sleeve. The sealing rod is vertically arranged over the liquid inlet end, the upper end of the sealing rod penetrates out of the furnace body, the sealing rod is controlled to move up and down, and a sealing ball head matched with the conical inclined face is fixed to the lower end of the sealing rod. According to the lead melting furnace, on the premise that a valve is omitted, the lead discharging structure which is better in sealing performance, better in abrasion resistance and easy to replace is designed, and therefore the sealing effect of the lead discharging structure of the lead melting furnace can be effectively improved, and the service life of the lead discharging structure can be effectively prolonged; the technical problems that due to the fact that a valve of a lead placing assembly in a lead smelting furnace is prone to being damaged, the service life is short, lead liquid is prone to leaking, and safety accidents are prone to being caused are solved.

The invention discloses a method for recovering copper from high-arsenic matte and enriching arsenic and lead. The method comprises the steps that the high-arsenic matte and quartz sand are fully mixed according to a first set proportion and then added into a smelting furnace; natural gas and oxygen are continuously introduced into the smelting furnace for a heating smelting reaction, air is continuously blown in the heating smelting reaction process, and slag is discharged once every set time; and after slagging is completed, limestone is added to remove arsenic, meanwhile, the temperature in the smelting furnace is gradually increased to 950 DEG C, the temperature in the smelting furnace is kept at 950 DEG C till the content of arsenic in the materials is smaller than 1%, at the moment, arsenic enters smoke, and ash is produced after dust collection. According to the method provided by the invention, the high-arsenic matte obtained through treatment in a lead smelting enterprise can be recycled in a targeted manner, so that lead, antimony, gold, silver, arsenic and the like in the high-arsenic matte are recycled after being classified, and the aims of deeply treating the high-arsenic matte and enriching and extracting various valuable metal elements in a classified manner are fulfilled.

The invention belongs to the technical field of activated carbon preparation, and particularly relates to a method for preparing high-activity activated carbon from lead smelting water quenching slag and application. The preparation method of the high-activity activated carbon comprises the following steps: (1) respectively sampling the lead smelting water-quenched slag and the raw coal, and detecting respective chemical compositions and contents of the lead smelting water-quenched slag and the raw coal; (2) the lead smelting water-quenched slag and raw coal are compounded according to a certain proportion based on the content of Fe and Ca active substances; and (3) adding a binder into the mixed sample obtained by compounding, and carrying out hot press molding, carbonization and activation treatment to obtain the high-activity activated carbon. The activated carbon is prepared by regulating and controlling the addition amount of the lead smelting water-quenched slag and is used for flue gas purification, waste is turned into wealth, high-value utilization of the lead smelting water-quenched slag is achieved, the preparation cost of the activated carbon is reduced, and the obtained activated carbon has high activity and is suitable for industrial production. The industrial application of the activated carbon dry method integrated flue gas purification technology in the non-electric industry is promoted.

The invention belongs to the technical field of lead smelting, and particularly relates to a furnace top structure of an oxygen-enriched side-blown furnace. The furnace top structure comprises a furnace body, a smoke hood is arranged at the top of the furnace body, a smoke exhaust port and a feeding device are arranged on the smoke hood, the smoke exhaust port is connected with a pressure swing adsorption device through a pipeline, the feeding device comprises a charging barrel, the charging barrel is provided with a feeding port and a discharging port, and the charging barrel is fixed to the smoke hood; the discharging valve is used for opening and closing the discharging opening; and the sealing element is used for opening and closing the feeding hole. The discharging valve is arranged on the discharging port of the charging barrel, the sealing piece is arranged on the feeding port of the charging barrel, the feeding port of the charging barrel can be sealed through the sealing piece in the process that materials are conveyed to the furnace body, the volume of air entering the furnace body from the charging barrel is small, and the influence on the content of carbon monoxide in tail gas is greatly reduced; the problem of load increase of the pressure swing adsorption device can be improved.

The invention relates to a system and a method for recovering lead, tin and iron in water-quenched slag based on lead electrolysis of waste silicofluoride acid and secondary lead smelting. The system for recycling lead, tin and iron in the lead electrolysis waste silicofluoride acid and secondary lead smelting water quenching slag comprises a dissolving mechanism and a plurality of separating mechanisms arranged on the outer side of the dissolving mechanism, and the dissolving mechanism comprises a dissolving tank, a stirring assembly arranged in the dissolving tank and a temperature adjusting assembly arranged on the dissolving tank; and after the waste silicofluoride acid and the water-quenched slag are filled into the dissolving tank for reaction, the waste silicofluoride acid and the water-quenched slag are sequentially introduced into each separation mechanism for solid-liquid separation and precipitation reaction. The method for recycling lead, tin and iron in the water-quenched slag based on lead electrolysis of waste silicofluoride acid and secondary lead smelting comprises the following steps of a grinding procedure, a dissolving procedure, a separating procedure and a recycling procedure on the basis of the recycling system. The method solves the problems that solid and liquid waste in existing secondary lead smelting cannot be synergistically recycled, the recycling system and process are complex, the treatment difficulty is large, and the cost is high.

The invention relates to the technical field of lead smelting furnace manufacturing, in particular to a production process of a cylindrical lead smelting furnace body, which comprises six steps of bolt assembly fixation, thermocouple support installation, thermal insulation layer laying, electromagnetic heating coil winding, high-temperature-resistant wrapping treatment and reinforcing rib interference treatment, and solves the defects in the prior art. For example, assembly deviation caused by the fact that the position relation between a thermocouple support and a wire clamping groove is not optimized, operation errors caused by lack of reference points in the coil winding process and influence of interference of reinforcing ribs on coil layout are improved, the manufacturing precision of the furnace body is improved, and the heating performance and reliability of the furnace body are remarkably improved. And a brand new solution is provided for production of the cylindrical lead smelting furnace body.

The invention relates to a waste lead storage battery low-carbon recovery system and a recovery process thereof. The system comprises a waste battery pretreatment unit, a crushing and sorting unit and a lead smelting unit. The waste battery pretreatment unit is provided with a waste battery storage chamber, a discharge chamber, a gas collection chamber and a to-be-crushed chamber which are communicated in sequence, and is used for waste battery storage, residual electricity electrolysis hydrogen production and temporary storage; the crushing and sorting unit comprises a multi-stage crusher, a screening machine, a sorting machine and a filter press, and is used for separating to obtain a lead grid, a lead alloy block, light plastic, heavy plastic and waste lead paste. The lead smelting unit comprises a gas-liquid separation tank, a gas mixing tank and a side-blown furnace, gas generated by electrolytic hydrogen production is purified and dried and then mixed with natural gas to form mixed gas, the mixed gas serves as fuel of the side-blown furnace, and the waste lead paste is subjected to reduction smelting in the side-blown furnace to obtain lead bullion. According to the system, by-products of hydrogen production through electrolysis of waste battery residual electricity serve as smelting fuel, low-carbon environment-friendly recycling treatment of the waste lead storage battery is achieved, and the resource utilization rate is increased.

The invention discloses a multi-process treatment system for lead smelting smoke dust, and belongs to the field of lead smelting. The device comprises a winding cooling pipe arranged in a guide plate fixedly arranged in the bag type dust collector, the overall temperature of the cooling pipe is guaranteed through flowing of cooling liquid in the cooling pipe, then the overall temperature of the guide plate is guaranteed, temperature exchange with smoke introduced into the bag type dust collector is carried out through the guide plate, and the cooling effect is improved. Meanwhile, the surface of the bag type dust collector is provided with a circulating port, and the temperature of the smoke dust in contact with the filter bag is reduced through the water pumping port, the water pump, the water inlet pipe, the cooling pipe, the overflow pipe and the circulating port, so that the temperature of the smoke dust in contact with the filter bag is further reduced, and the influence of the smoke dust on the service life of the filter bag is reduced; cooling liquid can circulate in the bag type dust collector and the guide plate, after the cooling liquid flows into the bag type dust collector, the heat dissipation area is increased, rapid cooling can be achieved, and the cooling liquid enters the guide plate subsequently, so that the heat exchange effect can be guaranteed.

The invention relates to the technical field of tin recovery and treatment devices, and discloses a device for recovering and treating tin in lead smelting slag, which comprises a support frame, a reduction smelting electric furnace and a cover plate driven by an electric telescopic rod. According to the device, three graphite electrodes are adopted to generate 1300-1500 DEG C high-temperature electric arcs for smelting, and tin slag separation is achieved through an innovative layered isolation assembly. The assembly comprises a liftable sliding outer rod, a liftable sliding inner rod, an upper bushing plate and a lower bushing plate, the upper bushing plate and the lower bushing plate are connected with the sliding outer rod and the inner rod respectively, the upper bushing plate and the lower bushing plate can rotate relative to each other, a liquid level detection electrode detects the position of an interface, and a servo motor drives a gear rack mechanism to achieve high-precision positioning. The slag discharging system adopts the design of a movable material plate capable of being obliquely adjusted and is matched with a micro telescopic rod to control discharging. The tin recovery rate of 93.5% or above is achieved, the tin content of waste residues is lower than 0.8%, the deslagging efficiency is improved, and the problems that separation is not thorough, and blockage is prone to occurring in a traditional process are solved.

The utility model provides a waste residue cleaning device for crude lead smelting. Relates to the technical field of lead bullion smelting, the waste residue cleaning device for lead bullion smelting comprises a storage box, a feeder is fixedly installed on one side of the storage box, a mounting plate is fixedly installed on one side of the feeder, two fixing blocks are fixedly installed on one side of the mounting plate, and a same screw rod is rotatably installed between the two fixing blocks; a movable block is installed on the threaded rod in a threaded mode, a fixing frame is fixedly installed on one side of the mounting plate, two rotating rods are rotatably installed on the fixing frame, the two rotating rods are fixedly sleeved with synchronous wheels, the two synchronous wheels are sleeved with the same synchronous belt, and a first motor is fixedly installed on one side of the fixing frame. The waste residue cleaning device for crude lead smelting has the advantages that operation is convenient and fast, waste residues can be conveniently and fast collected and cleaned, and time and labor are relatively saved in the using process.

The utility model discloses an automatic feeding device in alloy lead smelting process, including bottom plate and smelting furnace, the top of bottom plate is installed with smelting furnace, the top of bottom plate one side of smelting furnace is installed with support frame, the top sliding installation of support frame has the moving plate, the top of smelting furnace is installed with the connecting frame, is installed on the outer wall of connecting frame and has the broken frame, the top symmetry of moving plate one side's support frame is installed with servo motor. The utility model not only has realized that alloy lead convenient height adjustment of feeding device to alloy lead, has facilitated that alloy lead convenient mobile conveying of feeding device to alloy lead, has facilitated that alloy lead convenient inclined automatic feeding of feeding device to alloy lead, has improved the security of alloy lead feeding of feeding device to alloy lead, and avoid due to alloy lead size too big and cause smelting time's extension, has improved alloy lead smelting efficiency, has reduced the loss of energy.

The utility model belongs to the field of casting machines, particularly relates to a casting machine for electric lead casting molding, and aims to solve the problems that impurities in lead liquid are cleaned by a manual hand-held tool in the prior art, high-temperature danger is caused in the cleaning process, and the automation degree of a casting process is reduced. Collecting bins are fixedly connected to the two sides of the conveyor, the same U-shaped frame is fixedly connected to the two sides of the conveyor, a connecting frame is arranged below the U-shaped frame, the top of the connecting frame slides in the U-shaped frame, a cleaning frame is arranged below the connecting frame, a connecting rod is fixedly connected to one side of the connecting frame, and the connecting rod is fixedly connected to the other side of the connecting frame. A plurality of lead molds are mounted on the conveyor belt of the conveyor; the utility model has the beneficial effects of high-efficiency automatic cleaning, accurate control, flexible adjustment, stability, reliability, energy conservation, environmental protection, easiness in maintenance and the like, and provides high-efficiency and reliable forming equipment for the electric lead casting industry.

The invention belongs to the technical field of pyrometallurgy lead, and particularly relates to a tubular tuyere sleeve core device and a preparation method thereof.The tubular tuyere sleeve core device comprises a 310S stainless steel pipe, a high-purity aluminum oxide ceramic layer located on the inner wall face of the 310S stainless steel pipe and an annular 825 nickel base alloy layer located on the outer wall face of the 310S stainless steel pipe; the 310S stainless steel flange ring is welded at the end part of one end of the 310S stainless steel pipe; according to the prepared tubular tuyere sleeve core device, the stability of the service process of the device and the maximization of comprehensive benefits are realized from the three aspects of improving the structural strength and optimizing the heat-resisting and wear-resisting processes.

The utility model discloses a smoke-proof and splash-proof device for lead smelting, and relates to the technical field of lead smelting. The smoke-proof and splash-proof device comprises a base plate, guide grooves are symmetrically formed in the upper surface of the base plate, a smoke-proof and splash-proof assembly is arranged on the upper surface of the base plate, the smoke-proof and splash-proof assembly comprises supporting legs which are connected on the lower surface of a top plate in a rectangular array mode, and guide blocks fixedly connected to the lower surfaces of the supporting legs are connected into the guide grooves in a sliding mode. Movable plates hinged through hinges are arranged on the four side walls of the top plate, and inserting holes are formed in the inner side walls of plug plates fixedly connected to the inner side walls of the movable plates. An adjusting assembly is arranged on the upper surface of the base plate. According to the lead smelting device, the smoke-proof and splashing-proof assembly is arranged, the floating amount of lead-containing smoke is reduced, waste is prevented from splashing to accidentally injure workers, cleaning of the inner side wall of the smoke-proof and splashing-proof assembly and overhauling of the lead smelting device are facilitated, the adjusting assembly is arranged, the stability of the smoke-proof and splashing-proof assembly in the moving process is improved, and lead materials are convenient to take and place.

The invention discloses a safety pressure relief structure for waste gas conveying on a lead smelting electric furnace, and particularly relates to the technical field of lead smelting, the safety pressure relief structure comprises an electric furnace body and a pressure relief valve, a waste gas pipe is mounted at the top of the electric furnace body, a connecting pipe is mounted at the left end of the pressure relief valve, and the connecting pipe communicates with the waste gas pipe; and a first-stage dust removal mechanism is mounted in the connecting pipe. According to the safety pressure relief structure for conveying the waste gas on the lead smelting electric furnace, the primary dust removal mechanism is arranged, dust in the waste gas is filtered before lead smelting waste gas enters the pressure relief valve, and the situation that the dust in the waste gas blocks the pressure relief valve, consequently, the pressure relief valve cannot work, and then the explosion risk is caused is avoided; the secondary dust removal mechanism and the purification mechanism are arranged at the tail end of the pressure release valve, waste gas exhausted by the pressure release valve is filtered and purified, dust and toxic substances carried in the waste gas are treated, and the situation that the waste gas is exhausted into air, and air pollution is caused is avoided.

This invention belongs to the technical field of side-blown lead smelting furnaces, specifically disclosing a side-blown lead smelting furnace that is easy to inspect and maintain. It includes a settling chamber, a lead outlet channel connected to one side of the settling chamber, a connecting water jacket connected to the upper part of the outer wall of the settling chamber, a side-blowing mechanism connected to the upper end of the settling chamber and corresponding to the water jacket on the outer wall of the smelting chamber, a charging chamber connected to the upper end of the smelting chamber via a connecting mechanism, a flue pipe connected to the middle of the upper end of the charging chamber, the flue pipe being inclined, a feed inlet on the lower part of one side of the charging chamber, and a feeding mechanism connected to the upper end of the smelting chamber corresponding to the feed inlet. This invention achieves uniform material distribution and online self-cleaning through independently flippable guide plates and diffuser plates, and allows for quick replacement of components through detachable connections, significantly improving the convenience of inspection and maintenance and the equipment's operating rate.

The present invention relates to the technical field of lead refining, and particularly relates to a lead water collection device and a collection control method for metal lead smelting. By monitoring the change trends of the lead water level and the lead water purity in the lead water collection tank, and combining with the historical lead discharge rate, the present invention adjusts the filtration accuracy of the lead water; then, according to the change correlation between the lead water level and the molten iron level, further combining the changes in the lead water level and the lead water temperature, it controls the lead water discharge; and after the discharge, according to the change in the lead water volume before and after the discharge and the bottom pressure of the tank, combining with the sedimentation coefficient during the discharge, it adjusts the cleaning intensity of the sediment in the lead water collection tank. When collecting lead water, the present invention performs a certain filtration, reduces the degree of impurity blockage of the lead discharge hole and improves the lead water purity, accurately judges the possibility of sediment blockage and the possibility of lead water overflow in the lead water collection tank, determines the discharge timing and conducts control cleaning after the discharge, thereby improving the output effect of the lead water.

The invention discloses a method for improving the tin recovery rate in the pyrogenic process lead smelting process, and relates to the field of non-ferrous metal smelting. According to the method, copper-containing materials and lead concentrate are mixed according to a certain proportion, and copper dross with the high tin content is produced after the steps of burdening, bottom blowing smelting, reduction smelting, pyrogenic process refining for removing copper and tin and the like. According to the method, the copper element is introduced in the pyrogenic process lead smelting process, efficient enrichment of the tin element in the lead concentrate in the copper dross is achieved, the recovery rate and the enrichment rate of tin in the pyrogenic process lead smelting process are increased, the produced copper dross with the high tin content can serve as a raw material for further recovery of tin, and the method is easy to operate and has good economic benefits.

The invention relates to the technical field of lead melting equipment, in particular to a lead melting furnace body control circuit system and a control method. Comprising an electromagnetic induction heating module, a temperature detection module, a heat preservation layer heat loss monitoring module, a power grid parameter acquisition module, a central control unit and a man-machine interaction module, and the electromagnetic induction heating module is electrically connected with the central control unit and used for adjusting the heating power of a lead smelting furnace body according to a control signal output by the central control unit; the temperature detection module comprises at least three temperature sensors arranged in different areas in the furnace body and is used for collecting temperature data in the furnace body in real time and transmitting the temperature data to the central control unit; the heat-insulating layer heat loss monitoring module comprises a heat flow sensor and a heat-insulating layer temperature sensor and is used for acquiring the heat loss rate of the heat-insulating layer and the temperature difference between the inner wall and the outer wall of the heat-insulating layer and transmitting to the central control unit; according to the technical scheme of the lead smelting furnace, the heating efficiency can be fundamentally improved, and energy loss is reduced.

The utility model relates to the technical field of dross fishing equipment, and discloses dross fishing equipment for lead smelting, which comprises a fixing frame, a motor seat is fixedly connected to the front end of the fixing frame, a second motor is fixedly connected to the surface of the motor seat, and a screw rod is fixedly connected to the output end of the second motor. The surface of the lead screw is in threaded connection with a sliding plate, the upper surface of the sliding plate is fixedly connected with a motor box, the inner wall of the motor box is fixedly connected with a first motor, and the output end of the first motor is fixedly connected with a steel cable winding shaft. A second motor is arranged, the second motor drives a lead screw to enable a sliding plate to move along a fixing frame, the sliding plate drives a first motor in a motor box to operate, the first motor controls a steel cable to ascend and descend through a steel cable winding shaft, the steel cable ascends and descends to drive a stabilizing block and a limiting frame to move up and down, and a limiting sliding rod of the limiting frame limits the stabilizing block and the limiting frame. The stability in the sliding process is kept, and the connecting frame moves along with the limiting frame.

The utility model belongs to the technical field of secondary lead production and processing, and discloses a secondary lead smelting flue gas waste heat utilization device which comprises a smelting furnace and a preheating box, a feeding port is formed in the top end of the preheating box, a top cover is arranged at the feeding port, a discharging port is formed in the lower portion of one side of the preheating box, a feeding port is formed in one side of the upper end of the smelting furnace, and a flue gas pipeline is arranged on the other side of the upper end of the smelting furnace. A material guiding pipe is connected between the discharging port and the feeding port, a heat conducting plate which is obliquely arranged is arranged in the preheating box, the lower end of the heat conducting plate is connected with the discharging port, a preheating cavity is formed between the heat conducting plate and the bottom wall of the preheating box, the smoke pipeline is communicated with the preheating cavity, and the side, away from the smoke pipeline, of the preheating cavity is communicated with a smoke discharging pipe. According to the utility model, the waste heat of the flue gas is effectively utilized to preheat the regenerated lead raw material, so that the smelting efficiency can be improved, the heat can be effectively utilized, the energy waste is reduced, the production cost is reduced, and the device is suitable for popularization.