47 results about "Extracted Lead" patented technology

The present invention provides an environmental protection lead extraction method from waste and old accumulator, which overcomes problem existed in home and abroad technology. Most domestic technologies adopt flame furnace blended smelting method, in which lead dust, steam and skim and sulfur dioxide and so on, generated by high temperature, contaminate environment seriously and recovery ratio of lead is low. Abroad technologies mostly adopt method of smelting in which desulfurization goes first and pyrogenic process reduction second. This method needs high equipment investment, but still pollutes environment. The invention mainly comprises preconditioning of desulfuration, in which desulfurizer is soda and reducer is erinitrit or sodium sulfite; electrodeposition and reclamation of desulfurizer. Advantages in this invention: the whole craft proceeds in wet environment and normal temperature, so that it doesn't generate lead dust, steam and skim and sulfur dioxide to pollute the environment; water can be used with recirculation and purification of lead by electrolyzation is high.

The invention discloses a method for extracting lead from waste CRT (Cathode Ray Tube) glass, which belongs to the field of the recycling of inorganic material waste. The method comprises the following main steps of: (A) grinding the waste CRT glass, mixing with strong base and activated carbon and melting for 20-120 minutes at the temperature of 450-800 DEC G; (B) cooling and washing melt with water, separating and filtering crude lead to obtain alkaline residues and alkaline liquor; (C) immersing and cleaning the alkaline residues with diluted hydrochloric acid, filtering and cooling to obtain chlorinated lead sediment, and thus, the purpose of lead extraction is achieved. By means of the method disclosed by the invention, lead can be effectively extracted from the waste CRT glass, and the purpose of reducing environmental effect brought by heavy metal lead; and in addition, waste liquor produced in the extraction process can be circularly used, and the advantages of fewer waste residues, extremely low lead content and no environmental pollution are achieved, thereby, the method has good industrialized popularization and application values.

The invention discloses a method for extracting a leading line in an orchard and relates to the technical field of image processing. The method comprises the following steps: S1) acquiring images in a target orchard and generating chromatic aberration images of the acquired images; S2) acquiring the projections of pixel gray values of the chromatic aberration images along the horizontal and vertical directions; S3) acquiring a far scene midpoint and a near scene midpoint of the road in the target orchard, according to the projections; and S4) acquiring the leading line according to the far scene midpoint and the near scene midpoint. The method has a high extracting speed and has the advantages of simplification, reliability, excellent instantaneity, and the like.

The invention relates to a mounting method for temperature sensor thermosensors of an electric cooker. The mounting method comprises the following steps: providing an inner shell (1) with a bottom punched with two T-shaped guide feet and a turnup hole for positioning and fixing extracted leads (11); providing an outer shell (4) with a bottom punched with a round hole and two guide grooves in the round hole; mounting a temperature control element (10) in a groove of tablettings (7), penetrating the leads (11) wrapped by a sleeve out of the turnup holes at the bottom of the inner shell (1) to be tightly matched with and fixed on the turnup holes; arranging the tablettings (7) between the inner shell (1) and an aluminum cover (13) to be riveted and compacted and using the tablettings (7) to compact temperature control element (10); supporting the inner shell (1) in the outer shell (4) by springs (12), penetrating the leads (11) wrapped by the sleeve out of the round hole of the outer shell (4), and penetrating the T-shaped guide feet of the inner shell (1) out of the round hole of the outer shell (4) to be bent in the guide grooves of the outer shell (4). The mounting method for the temperature sensor thermosensors of the electric cooker can reduce materials, decrease the cost, improve the qualified rate and ensure the product to be more reliable in the working process.

The invention relates to a comprehensive recovery method for smelted lead waste slag of a blast furnace, and relates to a metal waste slag recovery method. The method comprises the following steps of: grinding the smelted lead waste slag of the blast furnace into powder with a certain particle size; mixing the powder, coking coal powder, ferric chloride homologues and ingredients; curing and roasting the mixture; and carrying out chlorination reduction volatilization to obtain magnetic ferric oxide powder and mixed smoke dust, wherein the iron recovery rate of the magnetized iron powder subjected to magnetic separation is over 80 percent; the qualified iron ore powder with more than or equal to 60 percent of the iron content can be obtained; the ash and the smoke dust are respectively subjected to dust collection and water-cooling adsorption to extract lead, zinc, copper, tin, stibium and the like; and the recovery rate is over 90 percent. Through the comprehensive recovery method, valuable metals are regenerated by using the smelted lead waste slag; environment pollution can be managed; and the condition of scarcity of mineral resources in China is relieved.

The invention discloses an all-wet method for extracting lead from lead plaster and lead sulfide concentrate. The method comprises the steps that the lead plaster of a waste lead acid accumulator and a carbonate solution are subjected to a desulfurization conversion reaction, solid-liquid separation is conducted, a sulfate solution and desulfurization conversion materials are obtained, the desulfurization conversion materials are subjected to neutral leaching by means of a methanesulfonic acid solution, and neutral leachate and neutral leaching residues are obtained through liquid-solid separation; the neutral leachate and waste sulfate electrolyte are blended for preparing sulfate electrolyte which is then subjected to lead electrodeposition, and a lead plate and waste lead electrolyte are obtained; and the neutral leaching residues serve as an oxidizing agent, the lead sulfide concentrate is subjected to acid leaching by means of the waste sulfate electrolyte, liquid-solid separation is conducted, acid leachate and acid leaching residues are obtained, and the acid leachate returns for application to neutral leaching next time. By adoption of the method, the lead is efficiently extracted, the leachate and the sulfate electrolyte are recycled, no waste liquid is generated, and the requirement for environment protection is met.

The invention relates to a method for producing rough lead by the direct low temperature melting of solid lead chloride. The method is characterized by comprising the following steps: (1) firstly, mixing solid lead chloride, fusing agent and reducing agent; (2) adding the mixture into a turning short kiln to carry out low-temperature smelting so as to produce rough lead, slag, flue dust and flue gas; (3) carrying out water leaching on the slag and the flue dust produced by the low-temperature smelting, producing leached slag and leached fluid by solid and fluid separation, keeping the leached slag to be processed, evaporating and concentrating the leached fluid and producing the solid lead chloride. The fusing agent used by the invention is calcium carbonate, and the reducing agent used by the invention is coke powder or coal powder. The invention has the characteristics of low production cost, energy consumption and flue dust rate, high efficiency and lead direct yield, less lead volatilizing content, and the like.

The invention discloses an AutoLisp encapsulation automatic wiring and line connecting system and device which can realize automatic wiring and line connecting of integrated circuit encapsulation, greatly enhance the efficiency and lower the line connecting error rate. Particularly in the line connecting of a high line position in the integrated circuit encapsulation, the AutoLisp encapsulation automatic wiring and line connecting system and device has more dramatically efficiency. Compared with the traditional manual wiring, the invention greatly enhances the wiring efficiency and realizes the automation of the wiring production technology. The AutoLisp encapsulation automatic wiring and line connecting system and device runs under the environment after an AutoCAD R14 version or a higher version of Windows 95 / 98 / ME / XP / 2003 or a higher operating system runs, and is worked out by AutoLisp language. The AutoLisp encapsulation automatic wiring and line connecting system and device is characterized by comprising a lead frame coordinate data extraction device Getp1, a chip diagram pressure point extraction device Getpp, an automatic line connecting device Bond and an automatic erasing device Delbd, an extracted lead frame coordinate point combines with an external given chip coordinate point or chip diagram pressure point coordinate point, and automatic line connecting is carried out through the automatic line connecting device Bond. When the line connecting cannot satisfy the requirements, the automatic erasing device Delbd erases all the diagrams generated by the automatic line connecting once, and then the automatic line connecting is executed to carry out regulation until the requirements are satisfied.

The invention discloses a method for removing sulfate radical from lead sulfate alkaline electrolyte. The method comprises the following steps: removing sulfate radical SO4<2-> from alkaline waste electrolyte with barium hydroxide Ba(OH)2 or barium oxide BaO, and thus sodium hydroxide NaOH is regenerated, and barium sulfate BaSO4 is also obtained and lead in lead waste electrolyte is not lost in a barium sulfate BaSO4 sediment; adding barium hydroxide Ba(OH)2 or barium oxide BaO according to the amount of Ba(OH)2 / SO4<2-> being 1 to 1.1 or Ba(OH)2 / Pb being 0.5 to 1, wherein the operation temperature is 80-900 DEG C and the time is 3-4 hours; heating the generated white sediment with clear water to 40-600 DEG C according to the liquid-to-solid ratio being 2-5, washing for 2-3 times, drying the obtained white solid, so as to form amorphous barium sulfate BaSO4, returning the lead waste electrolyte from which SO4<2-> is removed and extracting lead sulfate PbSO4. The sulfate radical SO4<2-> is removed from the alkaline lead waste electrolyte with barium hydroxide Ba(OH)2 or barium oxide BaO; meanwhile, NaOH is regenerated, and thus the high-quality barium sulfate BaSO4 product is obtained.

The invention discloses an application of houttuynia cordata in restoring lead-polluted soil, wherein, the houttuynia cordata is planted in lead-polluted soil to absorb and extract lead in the soil inorder to solve the lead pollution problem of soil permanently; the application has the characteristics of lower energy consumption, strong operability, less environmental disturbance, no damage to physicochemicai properties of soil and no secondary pollution; the accumulated heavy metals in the soil can also recycled by advanced technology while environment treatment, thus creating certain economic benefit; and the application also has the advantages of low expenditure, great suitability for large-area heavy-metal-polluted soil and the like.

The invention discloses a visual visible light positioning LED-ID detection and recognition method based on machine learning, and the method comprises the following steps: enabling different LEDs to emit light with different frequencies and duty ratios at a transmitting end through PWM modulation, and achieving the giving of unique IDs to the different LEDs; at a receiving end, using a CMOS camerato shoot an LED, processing an LED picture through an image processing technology, and extracting LED area, stripe number and black and white stripe duty ratio characteristics; training the extractedLED features through a machine, and establishing a classifier; according to the features extracted by the unjudged LEDs, using the classifiers to judge the categories to which the LEDs belong, and achieving LED-ID detection and recognition; and using the detected LED to carry out positioning through an approach method. The LED-ID visible light positioning method is established through machine learning and image processing, the method is simple and feasible, the method can be achieved by modifying an existing lamp and combining a mobile terminal, and wide market value is achieved.

The invention discloses a method for extracting lead and silicon from CRT (Cathode Ray Tube) cone glass with strong alkali by adopting a mechanical activation process. The existing CRT cone glass lead extraction technology is complicated in equipment, high in energy consumption and easily produces secondary pollution. The method comprises the steps of: coarsely grinding CRT cone glass to obtain ground CRT cone glass with 100-200 meshes; adding the ground CRT cone glass into alkali liquor with concentration of 2-9mol / L, reacting for 60-300 minutes at 70-250 DEG C, and then filtering and separating to obtain leached residues and lead- and silicon-containing leachate. The leaching rate of lead achieves 80-95%, and the leaching rate of silicon achieves 75-95%. The CRT cone glass is subjected to activation pretreatment and then alkali liquor leaching by adopting the mechanical activation technology, thereby achieving the effects of mild reaction conditions, simple process flow and high lead and silicon leaching rates; and large-scale industrialized production is easy to realize.

The invention belongs to the field of metal metallurgy and provides a technology for extracting lead from lead slag by using a whole wet method. The technology specifically comprises the following steps of: transforming PbSO4 in the lead slag into PbCO3 by using Na2CO3, leaching PbCO3 material by using NaOH, producing electric lead by lixivium through electro-deposition, washing the electric lead with acid to recycle ZnSO4*H2O, and at the same time, improving the quality of the electric lead; and after the electro-deposition, evaporating and concentrating the lixivium to produce Na2CO3 crystals, causticizing the Na2CO3 crystals through slaked lime to recycle NaOH, and carrying out alkaline leaching on evaporated mother liquor and causticized liquid. The method is strong in adaptability, and is applicable to the lead slag with different components and grades; the production cost is lower than that of a pyrogenic process technology, and the direct yield of lead can be more than 90%.

The invention relates to a method for extracting lead through electrolyzing recycled waste lead storage battery lead plaster by ionic liquid, and belongs to the technical field of nonferrous metallurgy. The method comprises the following steps: firstly, dissolving waste lead storage battery lead plaster powder into the ionic liquid under the condition of the temperature being 30 to 85 DEG C to obtain ionic liquid electrolyte, wherein the ionic liquid is a deep eutectic solvent, [BMIM]AlCl3, [BMIM]BF4 or [BMIM]PF6; under an inert atmosphere, carrying out electrodeposition in the obtained ionic liquid electrolyte by taking a graphite electrode as an anode, and carbon steel, stainless steel, nickel or cooper as a cathode, thus obtaining lead powder on the cathode. According to the method, the ionic liquid is applied to the electrolytic reduction of the waste lead storage battery lead plaster by serving as an electrolyte; the prepared lead powder is high in purity, fine in granularity and high in activity.

The invention discloses a method for extracting lead from waste CRT (Cathode Ray Tube) glass, which belongs to the field of the recycling of inorganic material waste. The method comprises the following main steps of: (A) grinding the waste CRT glass, mixing with strong base and activated carbon and melting for 20-120 minutes at the temperature of 450-800 DEC G; (B) cooling and washing melt with water, separating and filtering crude lead to obtain alkaline residues and alkaline liquor; (C) immersing and cleaning the alkaline residues with diluted hydrochloric acid, filtering and cooling to obtain chlorinated lead sediment, and thus, the purpose of lead extraction is achieved. By means of the method disclosed by the invention, lead can be effectively extracted from the waste CRT glass, and the purpose of reducing environmental effect brought by heavy metal lead; and in addition, waste liquor produced in the extraction process can be circularly used, and the advantages of fewer waste residues, extremely low lead content and no environmental pollution are achieved, thereby, the method has good industrialized popularization and application values.

The invention relates to a method of recovering silver from low-silver smelting slag. The method comprises the following steps: reducing the silver smelting slag; performing vacuum distillation on a lead alloy; electrolyzing a lead-arsenic-antimony alloy; and performing pressure leaching on a silver-nickel-copper alloy. The method specially comprises the following steps: adding coke to reduce the silver smelting slag to obtain the lead alloy and reducing slag; putting the lead alloy in a vacuum furnace for vacuum distillation to obtain the lead-arsenic-antimony alloy and the silver-nickel-copper alloy; electrolyzing the lead-arsenic-antimony alloy to extract lead; after water quenching and atomization, performing pressure leaching on the silver-nickel-copper alloy to obtain leaching slag containing silver and a leachate containing nickel and copper; smelting the leaching slag containing silver in an alloy furnace to extract silver; and further recovering nickel and copper from the leachate containing nickel and copper. The highlights of the method lie in that noble metals such as gold and silver in the low-silver smelting slag are recovered, and meanwhile, an open circuit of lead in a treatment process of copper anode slime is realized, so that resources are reutilized, the production cost is lowered, resources are saved, and the method is of quite important significance either in resource recovery or environmental protection.

The invention discloses a wet cleaning treatment method for lead chloride slag. The method comprises the following steps: 1, coordination leaching of lead chloride slag, namely performing coordinationleaching on the lead chloride slag by taking an ammonium acetate solution as a coordination leaching agent, and performing solid-liquid separation after leaching completion so as to obtain a leachingsolution containing a lead complex and leaching slag; 2, performing diaphragm electrodeposition on the leaching solution to extract lead, and performing diaphragm electrodeposition by taking the leaching solution containing the lead complex obtained in the step 1 as cathode liquor and taking an ammonium chloride solution as anode liquor so as to extract lead; and 3, performing post-treatment on an electrolytic stripped solution, returning the cathode electrolytic stripped solution obtained in the cathode chamber to be used for leaching after electrodeposition completion, adding a neutralizerinto an anode electrolytic stripped solution in the anode chamber to regulate the pH value, and returning to the step 2 to serve as the anode liquid for later use. According to the method, various lead chloride slag can be cleaned and efficiently treated, and the electric lead product with high purity is directly obtained. The wet cleaning treatment method disclosed by the invention has the outstanding advantages of being high in raw material adaptability, simple in process flow, clean, environment-friendly and the like.

Disclosed are an atomic absorption spectrometer for detecting lead and cadmium elements in grain at the same time and a detection method. The spectrometer adopts a lead-cadmium composite hollow cathode lamp, a power supply and a control module, wherein the hollow cathode lamp is arranged in a lead element high-performance lamp working state, a cadmium element common lamp working state, and a copper element adjacent wavelength background correction working state, so that background correction measurement of lead and cadmium elements at the same time is achieved. At the meanwhile, a diatomized region atomizer, a power supply and a control module are adopted, wherein the diatomized region atomizer is arranged in a regional time-sharing atomization mode, and through setting of whether samplingis carried out in different regions and adjustment of sampling amounts in different regions, lead and cadmium single elements are calculated and selected in excellent sensitivity. The detection method comprises a pre-treatment method of extracting lead and cadmium elements from grain at the same time and a sampling and data treatment method for measurement at the same. The lead-cadmium compositehollow cathode lamp is different from a common multielement lamp, and is improved in light energy improved, widened in linearity range, and improved in sensitivity and detection limit. The method is suitable for detecting lead and cadmium elements in grain at a fast large flux at the same time.

The invention discloses a planar light extracting LED street lamp comprising a lamp holder, a spacer fixed on the lamp holder, a lamp housing screwed on the spacer and a screw cap arranged on the lamp housing, wherein a circuit board is arranged in the spacer; a single LED lamp is arranged at the front end of the lamp holder and is connected with the circuit board; the LED lamp comprises a lamp panel, a bulb and a double-peak optical lens; the bulb and the double-peak optical lens are arranged on the lamp panel; the middle of the double-peak optical lens is sunken; the bulb faces towards the sunken part in the middle of the double-peak optical lens; and the LED lamp is covered by a non-lighttight cover. The LED street lamp has the characteristics of uniform light distribution, high utilization ratio of light energy, good heat dissipation effect and long use time.

The invention discloses a method for extracting valuable metals and refining zinc sulphate monohydrate from zinc-containing waste material. The method comprises the steps of refining the zinc sulphate monohydrate and extracting cadmium, lead, indium and other valuable metals, wherein the technology for refining the zinc sulphate monohydrate comprises the steps of: acidification, oxidization, zinc replacement, concentration, drying, packaging and the like; the technology for extracting cadmium comprises the steps of: acidification, oxidization, replacement, cadmium residue rinsing and the like; the technology for extracting lead comprises the steps of: acidification, oxidization, primary rinsing, secondary rinsing and the like; the technology for extracting indium comprises the steps of: acidification, oxidization, primary rinsing, secondary rinsing, extraction, back extraction, indium replacement, electrolysis and the like; and the extracted raffinate can be added into the next circulation to be recycled. Thus the zinc sulphate monohydrate and the valuable metals such as cadmium, lead and indium can be obtained, the process is simplified, the production cost is reduced, and the method is convenient for operation, simple in technology and high in recovery rate. The method has the advantages of low cost and energy consumption, etc.

The invention provides a method for measuring and analyzing lead-210 in soil or organisms, the method comprises the following steps: extracting lead resin to obtain a sample solution, measuring the lead-210 in the sample solution by a liquid flash spectrometer and an inductively coupled plasma-atomic emission spectrometry, correcting background counting rate, detection efficiency and chemical recovery rate, and calculating to obtain the activity concentration of the lead-210 in the sample. According to the method, rapid measurement and analysis of the lead-210 are achieved, the analysis period is shortened to 2-3 h compared with 1-2 days of a traditional method, operation is easy, batch production is easy, the cost is low, the anti-interference capacity is high, stability and reproducibility are good, the chemical recovery rate of the lead-210 is high, and the method is suitable for rapid measurement of the lead-210 in the environment under various conditions.

The invention discloses a method for extracting a leading line in an orchard and relates to the technical field of image processing. The method comprises the following steps: S1) acquiring images in a target orchard and generating chromatic aberration images of the acquired images; S2) acquiring the projections of pixel gray values of the chromatic aberration images along the horizontal and vertical directions; S3) acquiring a far scene midpoint and a near scene midpoint of the road in the target orchard, according to the projections; and S4) acquiring the leading line according to the far scene midpoint and the near scene midpoint. The method has a high extracting speed and has the advantages of simplification, reliability, excellent instantaneity, and the like.

The invention discloses a method for extracting lead from lead sulfide concentrate through two-stage countercurrent constant-pressure oxidizing leaching of a sulfonic acid solution. The method comprises the following steps of mixing the sulfonic acid solution with lead sulfide concentrate and a surfactant in a reaction kettle, adopting iron ions as an oxidation catalyst, and performing a two-stage countercurrent leaching method of neutral oxidizing leaching and acid oxidizing leaching under constant pressure to achieve selective leaching of lead; oxidizing sulfur in the concentrate into elemental sulfur which remains in slag; performing electrodeposition on a neutral leaching solution so as to obtain metal lead and a waste electrolyte; performing next acid leaching on the waste electrolyte or preparing an electrolyte from the waste electrolyte and a new solution; and enabling an acid leaching solution to enter the procedure of the next neutral leaching. Through the adoption of the method, not only can the efficient extraction of lead be realized, but also the cyclic utilization of the leaching solution and the electrolyte is realized, and waste solutions are not produced, so that green and environmental protection requirements are met.

The invention discloses a method for extracting lead and molybdenum from lead and molybdenum associated mineral and especially relates to a method for extracting lead and molybdenum from lead and molybdenum associated mineral containing galena, molybdenite, lead molybdate ore and pyrite. The method comprises the following steps of carrying out roasting pre-treatment on lead and molybdenum associated mineral at a certain temperature to obtain a roasted product containing lead sulfate, lead molybdate, molybdenum trioxide and iron sesquioxide, immersing the roasted product in a sodium hydroxide solution to obtain a leachate containing sodium plumbite and sodium molybdate, carrying out evaporation concentration, cooling crystallization, washing and drying of the leachate to obtain lead oxide powder, and recovering molybdenum in the crystallization mother liquor by extraction separation or resin exchange. The method is used for high efficiency extraction separation of lead and molybdenum in lead and molybdenum associated mineral.

The invention discloses a planar light extracting LED projection lamp comprising a lamp body, an aluminum substrate arranged on the front of the lamp body and a driving power module arranged at the back of the lamp body, wherein LED lamps are distributed on the aluminum substrate and are connected with the driving power module; each LED lamp comprises a lamp panel, a bulb and a double-peak optical lens; the bulb and the double-peak optical lens are arranged on the lamp panel; the middle of the double-peak optical lens has a sunken structure; and the bulb faces towards the sunken structure in the middle of the double-peak optical lens. The LED street lamp has the characteristics of uniform light distribution, high utilization ratio of light energy, good heat dissipation effect and long use time.

The invention relates to the technical field of non-ferrous metal metallurgy, in particular to a process for extracting lead from zinc-lead dust, which comprises the following steps: S1, dehydrating and oxidizing the zinc-lead dust with the zinc-lead mass fraction ratio of 2: 1-3: 1 to obtain dehydrated dust with the water content of less than 2% and containing zinc oxide; s2, the dehydrated dust is subjected to ball milling activation, and activated dust is obtained; s3, the activated dust is subjected to leaching treatment, and lead-rich leaching residues and zinc-containing leaching liquid are obtained; and S4, the lead-rich leaching residues and a reducing agent are mixed and pressed into blocks, high-temperature reduction sublimation is carried out under the reducing atmosphere, and lead-rich smoke dust is obtained. According to the method, the lead-rich smoke dust is obtained through dehydration oxidation, activation, leaching treatment and high-temperature reduction sublimation, the recovery rate of lead can reach 90% or above, and the process can effectively enrich lead from the zinc-lead dust and achieve separation of zinc and lead elements.

The invention discloses an all-wet method for extracting lead from lead plaster and lead sulfide concentrate. The method comprises the steps that the lead plaster of a waste lead acid accumulator and a carbonate solution are subjected to a desulfurization conversion reaction, solid-liquid separation is conducted, a sulfate solution and desulfurization conversion materials are obtained, the desulfurization conversion materials are subjected to neutral leaching by means of a methanesulfonic acid solution, and neutral leachate and neutral leaching residues are obtained through liquid-solid separation; the neutral leachate and waste sulfate electrolyte are blended for preparing sulfate electrolyte which is then subjected to lead electrodeposition, and a lead plate and waste lead electrolyte are obtained; and the neutral leaching residues serve as an oxidizing agent, the lead sulfide concentrate is subjected to acid leaching by means of the waste sulfate electrolyte, liquid-solid separation is conducted, acid leachate and acid leaching residues are obtained, and the acid leachate returns for application to neutral leaching next time. By adoption of the method, the lead is efficiently extracted, the leachate and the sulfate electrolyte are recycled, no waste liquid is generated, and the requirement for environment protection is met.

The invention discloses a method for extracting lead from waste CRT one glass. The method comprises the following steps: putting a granular carbonaceous reducing agent into an upper-layer material distribution device of a vacuum furnace so as to generate carbothermal reduction reaction, putting cone glass into a lower-layer material distribution device, and closing the vacuum furnace; when the pressure of a vacuum chamber is lower than 15Pa and the temperature is higher than 1150 DEG C, maintaining the temperature for 10-120 minutes so as to volatilize lead oxide in the cone glass, wherein volatilized lead oxide generates a carbothermal reaction with the carbonaceous reducing agent while passing through a carbon layer at the upper part of a graphite crucible to generate gaseous lead metal,and gaseous lead metal is condensed in a condensing disc; and after the temperature maintaining is finished, naturally cooling to obtain metal lead in a condensing region, wherein the purity of metallead is higher than 99%, meanwhile, and lead oxide in the residual glass is effectively removed. When the thermal treatment temperature reaches over 1300 DEG C and the temperature maintaining time exceeds 60 minutes, the removal rate of lead oxide can reach over 99%, obtained lead can meet the basic requirements on lead-free glass components or building material components with silicon dioxide asthe main raw material, and the harmless treatment and comprehensive resource utilization of the cone glass can be realized.