Chemical processing is a key step in the recovery of platinum-rhodium wire, requiring specific chemical reactions to dissolve and separate platinum and rhodium metals. We use aqua regia to dissolve the platinum-rhodium alloy; the strong oxidizing nature of aqua regia effectively dissolves these precious metals, transforming them into a dissolved state.
During the recovery of platinum-rhodium wire, the wire is placed in aqua regia. In this stage, both platinum and rhodium are converted into metal chloro complexes, marking the beginning of the separation process. To accelerate the dissolution of platinum-rhodium metals, the process is typically conducted at high temperatures with stirring to ensure complete dissolution of the wire.
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The next step is the separation of platinum and rhodium, which hinges on exploiting the different precipitation properties of the metals under chemical conditions. Typically, we consider extracting platinum from the solution first, achieved by adjusting the solution's pH with ammonia. Platinum forms a precipitate at a specific pH environment. The platinum precipitate, appearing as a grey-white powder, can be separated from the solution through filtration and washing.
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The extraction of rhodium is comparatively complex, requiring the addition of other chemical reagents to induce rhodium metal precipitation. Rhodium precipitates generally appear pink or red-brown, which is easy to identify. Once rhodium precipitate forms, it also needs to be separated from the solution through filtration and washing processes.文章源自平泽贵金属回收公司 www.51gjs.comPINGZE Precious Metals Recycling-https://en.51gjs.com/47076.html 文章源自平泽贵金属回收公司 www.51gjs.comPINGZE Precious Metals Recycling-https://en.51gjs.com/47076.html
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