best place to buy junk silver

admin1 Precious metals 2021-03-30 09:18 0


Where is the silver precious metal recovery? Regarding the technology of silver, palladium, platinum and rhodium recovery, the permeability of palladium, platinum and rhodium ions in the anode solution into the electroplating solution. Plating solution Put the stirring rod into the plating tank to stir the plating solution, and wrap each soluble anode in an anode bag. Where is Qingyang Precious Metal Recycling Company. Covering each soluble anode with a diaphragm, and placing each soluble anode in the plating tank, the diaphragm can reduce the amount of silver ions, copper ions and their complexes that penetrate from the cathode side to the anode side. At the same time, the trash silver bag allows palladium, platinum and rhodium ions to penetrate from the anode side to the cathode side, so that at least a part of the amount of palladium, platinum and rhodium ions used to form the coating can be supplemented. The diaphragm is made of, for example, a non-ionic plastic microporous membrane. After connecting the terminal of the soluble anode and the terminal of the cathode to the power source, respectively, the anode solution is poured into it. The reason why the two soluble anodes are symmetrically arranged here is that an electric current is applied to plate the cathode of the plating object with the palladium platinum rhodium of the soluble anode and the plating metal in the plating solution. Next, the electrolytic plating recovery technology according to the second embodiment regarding the recovery technology is that toward one cathode, the plating object is an object that can be plated on both sides of the cathode by installing anodes on both sides of the cathode. How much silver is in the $1,000 bag. As shown, this embodiment is basically the same as the second embodiment, and junk silver is purchased on the spot. Except for the following points, description will be made with reference to the electroplating apparatus shown in the figure. The insoluble anode surrounded by a separator replaces one of the above-mentioned two soluble anodes of the first embodiment. The sd gold bar passes through both the soluble anode and the insoluble anode to prevent silver ions in the plating solution. Due to the contact with the insoluble anode, the current shown in the figure basically matches the equivalent current of the palladium, platinum and rhodium to be plated on the plating object. However, the electrolytic plating recovery technology of this embodiment is similar to the first one. Recycling technology. Therefore, detailed description is omitted.


The separator covering the insoluble anode here may be the same as or different from the separator covering the soluble anode, as long as it can prevent silver ions from contacting the insoluble anode and passing current. As for the sale of waste silver, for example, platinum, platinum and rhodium recovery refineries made by Shaoguan palladium are used. A conventionally used insoluble anode made of platinized titanium, trash silver bags, etc. Also in the second embodiment, a hydrophilic nonionic surfactant can be optionally added to the anode solution together with methanesulfonic acid. In addition, the electrolytic plating recovery technology of the third embodiment of the recovery technology will be described below with reference to the plating apparatus shown in the figure. As shown in the figure, in this embodiment of the plating device shown in the figure, the plating solution of the plating device of the first embodiment has a filter membrane, which includes a polyethylene non-woven fabric coated with cellulose, and the holes The circulation path is connected to a diameter of meters, preferably to meters by using a pump to pressurize a low pressure, such as a head pressure, to allow the plating solution to pass through the filter membrane. Therefore, an impurity as a solid substance in the plating solution is, for example, water. How much junk silver coins will you get. The palladium oxide, platinum and rhodium oxide, copper oxide and silver oxide can be removed by filtration, so that the quality of the solution can be prevented from degrading. Control of electroplating solution When electroplating is performed, it is easy to control the concentrations of palladium, platinum, rhodium, silver and copper ions in the plating solution within an appropriate range. In this case, in order to stably obtain the ideal plating film composition ratio and film performance, it is preferable to analyze the plating bath and replenish these ions in the plating bath, trash silver half a dollar.


In this way, the respective ion concentrations of palladium, platinum, rhodium, copper and silver can be maintained. At the expected level. How much junk silver should I have? It can be used alone or in combination with volume analysis, optical analysis, electrical analysis, thermal analysis, and radiographic analysis. Where is Zhoukou Precious Metal Recycling Company. Spectrophotometry, gravimetric analysis, etc. are used as ion concentration analysis and recovery techniques. These ions are mixed in advance with palladium platinum rhodium, palladium platinum rhodium in copper and silver, and copper and silver are primary ions to provide the desired coating composition ratio or coating performance. However, as the amount of electroplating treatment increases, ions are consumed. Therefore, the metal ion concentration in the plating bath fluctuates. However, by eluting from the anode and by replenishing the same amount of ions as the consumed ions by replenishing the concentrated solution of the metal salt from the outside of the plating bath, the concentration of the ions can be maintained at a preset level. The volume analysis of used silver sold includes redox titration, chelation titration, precipitation titration, etc. Optical analysis includes spectrophotometry, atomic absorption spectrometry, inductively coupled plasma atomic emission spectrometry, etc. Electrical analysis includes polarography, coulometric potential method and so on. Thermal analysis includes differential thermal analysis, differential scanning calorimetry, etc. X-ray analysis includes X-ray diffraction, X-ray fluorescence and so on. Before the ions of palladium, platinum, rhodium, silver and copper are supplemented to the electroplating solution, the solution bath can be analyzed by one or two or more recovery technologies selected from the above recovery technologies. The measured metal ion concentration in the electroplating bath and its calculated excess or deficiency can be supplemented by eluting the corresponding ions from the anode and or by externally providing metal salts in one or more forms selected from concentrated solutions and powders Alternatively, when supplementing metal ions, the above-mentioned eluate from the anode can be combined with the eluate from the outside in one or more forms selected from concentrated solutions and powder pastes.



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