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Gold is one of the rare and precious metals, today's gold is mainly used in jewelry, but also used in general manufacturing (such as electronics and computer industry), due to its thermal properties and electrical conductivity is very good, the computer industry to use hundreds of tons of gold every year. And we all know that gold is needed to refine, the following I will tell you in detail about the gold refining method, hurry to follow us to understand it.
Gold is partly refined from gold ore, there is another kind of refining through electronic waste, at present, the concept of gold refining is mainly to remove impurities, improve the purity of gold, to meet the quality standards required to meet the requirements of market transactions. At present, gold refining methods mainly have chlorination purification, aqua regia purification method, electrolysis purification, chloramine method purification, etc.
High temperature chlorination refining process.
In the smelting furnace melting crude gold, and then to the roasting body into the chlorine gas, due to various metal impurities (Fe, Zn, Pb, Cu, Ag, etc.) and chlorine chemical affinity, so selective impurities chlorinated to remove, so that the gold is purified.
The process of alloy composition to adapt to a wider range, but its chlorination process control (chlorine dosage, time, temperature, ventilation speed) is difficult to accurately grasp, product quality is difficult to stabilize the standard; Second, the chlorination process will have a small amount of gold volatilization, resulting in gold loss; In addition, the gold content of low raw materials, the application of the method is very uneconomic.
The above is all about gold refining, hope to help you, if you need or have other want to understand the content, welcome to leave a message to consult us Oh!
