首页>
外国专利>
Electrolytical process for extracting platinum of high purity from contaminated platinum.
Electrolytical process for extracting platinum of high purity from contaminated platinum.
展开▼
机译:从受污染的铂中提取高纯度铂的电解工艺。
展开▼
页面导航
摘要
著录项
相似文献
摘要
The electrolytic process for obtaining platinum of high purity from a concentrated hydrochloric acid solution of contaminated platinum containing base and noble metal impurities includes electrolyzing the hydrochloric acid solution containing the contaminated platinum in an electrolysis cell subdivided by a cation exchanger membrane under potentiostatic or voltage-controlled conditions with a voltage of 2.5 V to 8 V applied across the anode and cathode under a current density of 0.3 to 12.5 A/dm2 so as to form a refined platinum-containing solution and a platinum alloy metal deposit. The concentrated hydrochloric acid solutions used in the process can have a contaminated platinum content of 50 to 700 g/l and total metal impurities of /=5000 ppm. In contrast to the known prior art processes, the process according to the invention operates with minimal requirements in terms of safety technology and equipment, causes a minimal environmental burden and is far less time-consuming and more economical.
展开▼
机译:从受污染的含铂的贱金属和贵金属杂质的浓盐酸溶液中获得高纯度铂的电解方法包括在恒电位或电压控制下在由阳离子交换器膜细分的电解槽中电解包含受污染的铂的盐酸溶液。在0.3〜12.5A / dm 2的电流密度下在阳极和阴极上施加2.5V至8V的电压的条件下,以形成精制的含铂溶液和铂合金金属沉积物。该工艺中使用的浓盐酸溶液的受污染铂含量为50至700 g / l,总金属杂质为≤5000ppm。与已知的现有技术方法相反,根据本发明的方法在安全技术和设备方面以最小的要求进行操作,引起最小的环境负担,并且耗时少并且更经济。
展开▼