Rhodium, a rare and valuable platinum group metal, occupies a unique and important position in modern industry and jewelry manufacturing. Especially in the jewelry industry, rhodium leaching (rhodium plating) process not only gives jewelry a dazzling luster, but also significantly improves its wear resistance and corrosion resistance.
Rhodium leaching process
Rhodium plating (or rhodium plating) is a process in which rhodium is used as a coating material and is plated on the surface of other metals by chemical or electrochemical methods. This process involves several key steps:文章源自平泽贵金属回收公司 www.51gjs.comPINGZE Precious Metals Recycling-https://en.51gjs.com/48424.html
Pretreatment: including cleaning and removal of oil, oxide and other impurities on the surface of the item to be plated to ensure the adhesion and finish of the rhodium coating.
Activation treatment: improve the chemical activity of the surface of the article to ensure the uniformity of rhodium coating.
Rhodium plating: By electroplating or electroless plating, a thin rhodium film is formed on the surface of the item. Electroplating rhodium needs to be carried out in a solution containing rhodium salts, and the rhodium ions are reduced by an electric current and deposited on the surface of the object.
Post-treatment: including cleaning, drying, etc., to ensure that the coating surface is smooth and flawless.
Rhodium gold leaching cost
The cost of rhodium plating is affected by a number of factors, including the market price of rhodium, the complexity of the plating process, and the size and shape of the item to be plated. Due to the scarcity and high value of rhodium, the cost of gold plating is much higher than that of other metals such as gold and silver. The cost includes not only the purchase cost of pure rhodium, but also the cost of energy, labor and equipment depreciation during the gold-plating process.文章源自平泽贵金属回收公司 www.51gjs.comPINGZE Precious Metals Recycling-https://en.51gjs.com/48424.html
Recovery case
Considering the high value of rhodium, the recycling of the waste and waste liquid generated during the rhodium gold-plating process has significant economic and environmental significance. Take, for example, a rhodium recycling campaign conducted in 2023 by a jewelry processing plant in California, USA:文章源自平泽贵金属回收公司 www.51gjs.comPINGZE Precious Metals Recycling-https://en.51gjs.com/48424.html
Name of recovered metal: Rhodium
Date: June 2023
Location: California, USA
Process: The processing plant accumulated a certain amount of rhodium-containing wastewater and waste. Through chemical precipitation and filtration technology, rhodium is extracted from the waste, and then through purification treatment, high purity rhodium is recovered.
Weight: Total rhodium recovery approx. 1kg
Price of recovery: Assuming that the price of rhodium in the market at the time was $600 per gram, the recovery value of this 1 kilogram of rhodium would be about $600,000.
This recycling case not only reduces the waste of precious metals, but also brings considerable economic benefits to the processing plant, while reducing the environmental impact of the production process.文章源自平泽贵金属回收公司 www.51gjs.comPINGZE Precious Metals Recycling-https://en.51gjs.com/48424.html
文章源自平泽贵金属回收公司 www.51gjs.comPINGZE Precious Metals Recycling-https://en.51gjs.com/48424.html
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