49 results about "Electronic scrap" patented technology

An image of a sample print printed to obtain parameters is picked up by using “a parameter obtaining device” that meets the standards of an instrument for the invention of “the electronic scrap system.” Then, the picked-up image is captured by a DTP system, and color data of a needed position are imported to a parameter DB. Thereby, parameters for simulation to be used in an invisible code printing support system can be easily inputted. Use of this method eliminates the necessity of figuring out parameters through experiments and the like, and of inputting these parameters as numerical values. In addition, since this method uses a physical medium and inks to be actually used, as they are, their optical characteristics, an influence of a blue component of invisible light emitted from an ultraviolet LED, and the like can be inputted all together as a picked-up image. Accordingly, it becomes possible to input parameters capable of accurately reproducing actual printed conditions, and thereby to produce printed materials providing high reading accuracy.

A method for reclaiming nonferrous metals and noble metals in electronic scrap belongs to the technical field of resourceful disposal for industrial waste. The method comprises the following steps: the electronic scrap is crushed and separated to get mixed metal powder containing Pt, Pd, Au, Ag, Ni, Cu, Sb, Zn, Pb and Sn; the powder is fused in two steps; after each step, the fused material is collected by vacuum press-filtering; then the fused material is separated by vacuum distillation separation method to obtain the Sb, Zn, Pb and Sn; the Cu and Ni are extracted by electrolysis; the Au, Ag, Pt and Pd are extracted by hydrometallurgy. The method has the advantages of more through separation and collection, complete recovery of various metals in the electronic scrap, low cost, low energy consumption and high efficiency.

The noble metal regenerating and recovering method from electronic waste material includes pre-treatment of grinding, magnetically selecting and sieving to obtain noble metal containing powder; oxidation to loeaching through adding hydrochloric acid and complexing agent, dropping hydrogen peroxide while heating, leaching for at least 1.5 hr, eliminating superntant to obtain leaches liquid; addingiron powder into the leached liquid to obtain noble metal sludge via replacement; extracting from nobile metal sludge through leaching noble metal sludge, complex salt deposition, adding oxidant until producing chlorine and obtaining complex salt deposit; and purifying Pd. The present invention has the advantages of advanced technological process, low cost and high efficiency.

The invention discloses a side-blown continuous smelting process and device for electronic scrap. The smelting device is divided into a smelting area and a blowing area, wherein a water-cooled partition wall is arranged between the two areas; the lower end of the water-cooled partition wall exceeds an interface of slag and a metal layer, so that black copper flows in the blowing area through an opening on the lower part of the water-cooled partition wall; waste slag obtained from a smelting reaction is discharged from a wall slag tap at the end of the smelting area; and the furnace bottom is inclined from the smelting area to the blowing area, and crude copper obtained from the blowing reaction is discharged from a wall copper discharge opening at the end of the blowing area. According to flow of melt at the lower end of the partition wall, latent heat of the melt is efficiently utilized, and the smelting device has the characteristics of high efficiency and energy conservation; and moreover, a plurality of oxygen-enriched supply inlets are formed on a furnace wall on side faces of the furnace smelting area and the blowing area, the slag layer and the black copper layer are respectively stirred for reaction, and the thermodynamic and dynamic conditions of the reaction are greatly improved, so that the reaction is carried out at high efficiency, the operation time is shortened, the electronic scrap and copper-containing materials can be continuously smelted, crude copper is produced, and precious rare metals contained in the electronic scrap are enriched to the crude copper.

A recycling method for valuable metal in electronic waste includes the following steps that the electronic waste and a slag former are mixed to obtain a mixed material, wherein the electronic waste accounts for at least 10% of the mass of the mixed material; the mixed material is put into a smelting furnace for high-temperature smelting, wherein the smelting temperature is controlled to range from 1300 DEG C to 1450 DEG C, and the smelting time is longer than 10 min; and an oxidizing agent is added into the furnace in the high-temperature smelting process, and Cu-Sn alloy and furnace slag containing CaO and SiO2 are generated through smelting, wherein Fe accounts for less than 15% of the Cu-Sn alloy, and the CaO or SiO2 accounts for more than 0.25% of the furnace slag. The recycling method has the beneficial effects that the technological operation is simple, the waste is sufficiently utilized, the valuable metal recycling rate is high, energy consumption and cost are low, and the economic and environmental benefits are good.

The invention relates to a pulverizing device, and particularly relates to a multi-stage pulverizing device for an electronic waste. The technical problem to be solved by the invention is to provide the multi-stage pulverizing device for the electronic waste, and the multi-stage pulverizing device evenly pulverizes the waste and saves time and labor. In order to solve the technical problem, the invention provides the multi-stage pulverizing device for the electronic waste. The multi-stage pulverizing device for the electronic waste comprises a pulverizing frame, a primary-stage pulverizing mechanism is connected on the left side of the pulverizing frame, a secondary-level pulverizing mechanism is connected on the right side of the pulverizing frame, each of the upper side and the lower side of the interior of the pulverizing frame is connected with a filter screen, and sieve holes of the upper filter screen are larger than those of the lower filter screen. The invention designs the multi-stage pulverizing device for the electronic waste, the multi-stage pulverizing device for the electronic waste is provided with the primary-stage pulverizing mechanism so as to be favorable for saving time and labor when the electronic waste is pulverized, and the secondary-stage pulverizing mechanism is arranged.

The invention discloses a method and a system for treating electronic scrap smoke. The method comprises the following steps: (1) performing countercurrent contact between smoke and absorption liquid so as to obtain purified smoke and absorbed liquid; (2) filtering the absorbed liquid so as to obtain filtrate and filter residue; (3) mixing the filtrate with a heavy metal capture agent, and performing concentration treatment so as to obtain supernatant and filter residues containing heavy metals; (4) introducing chlorine into the supernatant, oxidizing bromide ions in the supernatant into molecular bromine, so as to obtain a reaction solution containing the molecular bromine; (5) distilling the reaction solution containing the molecular bromine so as to obtain bromine-containing gas; and (6) condensing the bromine-containing gas so as to obtain a bromine product and mixed gas. According to the method, the electronic scrap smoke can be effectively purified, the purified smoke can meet the national environmental protection standard, the bromine element can be efficiently recovered, the bromine extraction rate is over 90 percent, and the purity of the bromine product is over 99 percent.

The invention discloses a palladium removing and copper extracting method for copper-based palladium plating electronic scraps. The method comprises the steps that the copper-based palladium plating electronic scraps and a dedplating solution composed of a compounding agent, an oxidizing agent, a rate-accelerating additive and the like are mixed according to the proportion of 1:3-1:10, and react for 1-6 h at the temperature of 10-100 DEG C, a palladium plating layer is removed, and most of a copper base is kept; iron powder, zinc powder, cooper plates and the like which enter the deplating solution and are used for palladium are replaced, so that palladium is enriched again; palladium enriched objects are dissolved for liquid preparing, and palladium is separated through an extraction method; palladium strip liquor is refined to obtain palladium powder, the recover rate of palladium is 99%, and the purity of palladium is 99.95%-99.9%; little iron powder, zinc powder and the like which enter the deplating solution and are used for copper are deeply replaced to obtain active copper powder, and the active copper powder can replace iron powder, zinc powder and the like to be used as a replacement agent used for selectively replacing palladium in the deplating solution; and the copper base is subjected to smelting and ingot casting, raw copper is obtained and sold, the recover rate of copper is 95%, and the purity of copper is 98%. The method has the beneficial effects that the palladium deplating efficiency is high, damage to the copper base is small, palladium and copper are high in recovery rate, the method is simple and feasible, the amount of adopted reagent is low, production cost is low, and energy saving and environment friendliness are achieved.

The invention discloses an analysis method for determining the copper content in high-tin scrap copper ingots and crude copper. Samples are dissolved by nitric acid, tin is precipitated by metastannicacid and separated, and the copper of the filtrate is determined by iodometr so that the precision and the accuracy of the analysis result can be enhanced. An efficient and accurate method for correction of copper by atomic absorption spectrometry after dissolution of filter residue is presented. The method has the advantages of simple operation, easy mastery, good precision, high accuracy and wide applicability and can provide accurate and reliable data support for production process index control, metal balance and trade settlement and meet the needs of production and trade and can also provide theoretical and data support for the formulation of industrial and enterprise standards for scrap copper ingots and crude copper produced by electronic scrap so as to effectively fill the blank of the copper analysis method for the scrap copper ingots and the crude copper produced by the electronic scrap.

The invention discloses a fan control system and method based on electronic waste and complicated copper-based solid waste. The fan control system comprises a fan, a motor and a controller, wherein anemptying adjustment pipeline is connected to an air discharge pipe of the fan, the emptying adjustment pipeline is provided with a mass flow meter, a temperature measuring unit, a pressure meter andan emptying adjustment valve, the mass flow meter, the temperature measuring unit and the pressure meter are used for converting non-standard-condition flow into standard-condition flow, the motor isconnected with the fan and used for providing power for operation of the fan, the controller is connected with the temperature adjusting unit and the emptying adjustment valve and used for adjusting the temperature of the emptying adjustment pipeline through the temperature adjusting unit and linearly adjusting the emptying ratio through the emptying adjustment valve. The fan control system and method have the following advantages that the air volume needed by smelting with the electronic waste, the complicated copper-based solid waste and the like as raw materials can be effectively achieved,replacing the fan is not needed, so that investment of an enterprise is saved, the transformation period is shortened, normal production operation is guaranteed, and energy conservation and consumption reduction are achieved.

The invention belongs to the technical field of gold recovery, and discloses equipment for recycling gold by recycling electronic wastes. The equipment for recycling gold by recycling the electronic wastes comprises a crushing mechanism, a stirring mechanism and a filtering mechanism. The crushing mechanism comprises a shell, a feeding screw, two crushing rollers, a screening plate, a material pushing screw, a longitudinal baffle, a lifting screw and a first wedge-shaped block, wherein a feeding cylinder is longitudinally arranged in the shell, the feeding screw is longitudinally arranged at the upper end of the shell, the two crushing rollers are driven by a speed reducer to rotate oppositely, the screening plate is arranged in the shell and located below the two crushing rollers, the material pushing screw is used for pushing materials on the screening plate, the longitudinal baffle is longitudinally arranged in the shell, and the lifting screw is used for lifting the materials discharged from a first discharge port. The invention further discloses a method for recycling gold by recycling the electronic wastes, which can ensure that the particle diameter of the crushed electronicwastes collected by a second discharge port is controlled within a certain range, and the range is determined according to the hold diameter of the screening plate, so that the efficiency of gold separation treatment of the crushed electronic wastes in the stirring mechanism is improved.

The invention discloses a recovery process of valuable components in a waste thick film. The recovery process comprises the steps of disassembling a thick film circuit, specifically, the waste thick film circuit is disassembled from a product by a mechanical disassembling method; soaking and separating, specifically, the disassembled thick film circuit is soaked in an acidic medium to separate a metal plate from a thick film ceramic material in the thick film circuit, and a material after separating and removing the metal plate is filtered to obtain an insoluble electronic waste; performing ball milling and sorting, specifically, after the electronic waste is dried, the ball milling is carried out by using a ball mill, and ball-milled powder is separated by hydraulically power and gravityin a gravity mixer to separate the valuable components; and performing acid washing and impurity removal, specifically, the valuable components are recovered after acid treatment. According to the recovery process, a high-temperature alkali fusion method is replaced with a wet method, and the valuable components of the waste thick film are subjected to recycling treatment.

The invention discloses a method for dissolving and purifying precious metal from electronic waste, relates to the technical field of comprehensive utilization of industrial solid waste. Aiming at the problem of poor utilization efficiency of the existing industrial solid waste,the following scheme is provided; the method for dissolving and purifying the precious metal from the electronic waste comprises the following steps of: mixing the electronic waste containing the precious metal with acid liquor; decomposing the electronic waste through acid liquor to obtain decomposition liquid containing precious metal; filtering and cleaning the obtained decomposition liquid; removing water-soluble impurities in the decomposition liquid to obtain precious metal powder; putting the obtained precious metal powder into corresponding drying equipment; and drying the precious metal powder through the drying equipment. According to the method for dissolving and purifying the precious metal from the electronic waste, the precious metal of the electronic waste in the industrial solid waste can be rapidly and efficiently purified and collected, the purification method is simple, processing equipment used for purification is convenient to use, and then the extraction and storage progress of the precious metal is effectively improved, and the recovery efficiency is high.

The invention relates to a method for recovering precious metals from electronic waste. In particular, bio-metallurgical techniques are utilised during the process. In a first aspect, the invention provides a method of recovering one or more target metals from electronic waste, the method comprising (a) a pre-processing step comprising removing at least a portion of non-target material from the electronic waste or grinding to a preselected size particle to give pre-processed electronic waste; (b) a dissolving step comprising contacting the pre-processed electronic waste with a lixiviant such that at least a portion of the target metal(s) dissolve into the lixiviant to produce a pregnant solution; (c) a biological absorption step comprising contacting a microorganism with the pregnant solution such that at least a portion of the target metal(s) ions is biologically absorbed to the microorganism wherein the microorganism becomes metal laden and the pregnant solution becomes barren; (d) aseparating step comprising substantially separating the metal laden microorganism from the barren solution; and (e) a recovery step comprising recovery of the target metal(s) from the metal laden microorganism. In particular embodiments, the target metal is gold.