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The main methods of platinum refining include the following:
Platinum refining method: Platinum is separated from the ore by heating and cooling the platinum ore, and then refined to a high purity using chemical reactions.
Solvent extraction: Platinum is separated from other metals using chemical solvents.
Electrolysis: Platinum is extracted and purified by placing the platinum solution in an electrolytic bath and depositing the platinum on the electrodes through an electrolytic process.
Thermal processing: Platinum is extracted from the original ore by treatment at high temperature and pressure.
Gas phase extraction: The platinum is converted into a gaseous state by heating the substance containing it, and then separated from the rest of the substance by extraction and condensation.
Overall, methods of platinum extraction vary depending on the source and production environment, and sometimes a combination of different methods is required to achieve efficient extraction and purification of platinum.
Horizontal platinum furnace method: The horizontal platinum furnace method is one of the more commonly used methods for platinum refining and is usually applied when the platinum ore has a high platinum content. The method takes advantage of the volatility of platinum at high temperatures by increasing the temperature in the furnace to evaporate the platinum and condense it on the side walls of the furnace, ultimately yielding high purity platinum.
Platinum iodide method: The platinum iodide method is a method of refining platinum into platinum iodate and converting it into pure platinum by reaction. This method is suitable for ores or scrap with low platinum content and can yield relatively high purity platinum.
Platinum chloride method: The platinum chloride method is a type of platinum chloride obtained by heating platinum minerals in chlorine gas to a certain temperature so that the platinum is chlorinated. The platinum is then reduced to metallic platinum through a process of reduction, precipitation and washing.
In general, there is no single method of platinum refining, and all methods have their own scope of application and advantages and disadvantages, and need to be selected according to the actual situation and requirements.
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