Preparation method of 6N high-purity silver powder

The invention relates to a preparation method of 6N high-purity silver powder, which comprises the following steps: taking a 1 # silver ingot and silver nitrate as raw materials, then taking a silver nitrate solution as an electrolyte, taking the pretreated 1 # silver ingot as an anode and taking a titanium plate as a cathode for electrolysis, and washing and drying the obtained electrolytic powder to obtain the high-purity silver powder with the purity of more than 99.9999%. According to the method, 1 # silver ingots and superior-grade pure silver nitrate are used as raw materials, the method is prepared through an electrolysis method, operation is convenient, environment friendliness is achieved, and the technical problem of existing 6N high-purity silver production is solved. 本发明涉及一种6N高纯银粉的制备方法，该方法是以1#银锭和硝酸银为原料，然后以硝酸银溶液为电解液、预处理后的1#银锭为阳极、钛板为阴极进行电解，所得电解粉经洗涤、干燥，即得纯度在99.9999%以上高纯银粉。本发明以1#银锭和优级纯硝酸银为原料，采用电解法制得，操作方便、环境友好，解决了现有6N高纯银生产的技术问题。