Methods of Recycling and Processing Iridium Precious Metals

The recycling and processing of iridium metal can be done through various methods, including chemical refining, electrochemical refining, and smelting refining. Chemical refining is suitable for iridium-containing waste liquids or solid waste with low iridium content, where iridium is separated from other elements through chemical reactions. Electrochemical refining is more appropriate for high-purity iridium waste, such as the recycling of discarded platinum-iridium catheters. Smelting refining is applicable to large or high-purity iridium metal alloys, separating iridium metal components through high-temperature smelting.Methods of Recycling and Processing Iridium Precious Metals

Chemical refining typically includes dissolution, precipitation, and purification steps. First, iridium-containing waste is dissolved in acid, then iridium is separated from the solution in the form of precipitation through chemical reactions. The iridium precipitate is further purified through multiple steps to enhance its purity.Methods of Recycling and Processing Iridium Precious Metals文章源自平泽贵金属回收公司 www.51gjs.comPINGZE Precious Metals Recycling-https://en.51gjs.com/47100.html

In electrochemical refining of iridium, the pure iridium is extracted directly from the waste material through an electrolysis process. Smelting refining involves melting iridium metal waste at high temperatures, utilizing the physical property differences of different metals at high temperatures to separate pure iridium.Methods of Recycling and Processing Iridium Precious Metals文章源自平泽贵金属回收公司 www.51gjs.comPINGZE Precious Metals Recycling-https://en.51gjs.com/47100.html

For instance, in chemical refining, solid waste containing iridium is first dissolved in aqua regia to produce an iridium-containing solution. Then, sodium hydroxide is added as a precipitant for iridium ions, causing iridium to precipitate as a hydroxide. The precipitated iridium is filtered and washed to remove impurities, then calcined at high temperatures to convert into iridium powder. Finally, the iridium powder is further purified through processes like solvent extraction or electrolysis to obtain high-purity iridium metal.文章源自平泽贵金属回收公司 www.51gjs.comPINGZE Precious Metals Recycling-https://en.51gjs.com/47100.html 文章源自平泽贵金属回收公司 www.51gjs.comPINGZE Precious Metals Recycling-https://en.51gjs.com/47100.html

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