Method for preparing superfine copper powder by using waste circuit board dissolving copper-electrodeposition combined method
A technology for discarded circuit boards and ultrafine copper powder, which is applied in the field of electronic waste recycling, and can solve problems such as incomplete separation and environmental pollution
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[0026] Put the prepared electrolyte into the electrolytic cell, put the discarded circuit board after the paint removal in the anode area, pass nitrogen gas through the cathode, the temperature of the electrolyte is 30-70°C, the magnetic stirring speed is 100-300r / min, DC electrolysis to obtain ultra-fine copper powder. The specific electrolysis conditions and the average particle size of the obtained copper powder are shown in Table 1 (the additives are Tween, sodium dodecylbenzenesulfonate, isooctylphenol polyoxyethylene ether, cetyltrimethylammonium bromide, sulfobeet alkali, lauryl amidopropyl hydroxysultaine, decyl glucoside and disodium edetate).
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