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 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 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 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.

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 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 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 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 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.