Refining Of Gold

Refining of gold forms the final stage in gold production, after the mining processes. When gold is mined it is found in veins inside the earth. Gold is also found in placer deposits and is extracted by power shovelling and dredging. Gold is separated from the ore by using several methods.

Refining of gold can be done by three processes which are carbon-in-pulp, cyanidation and floatation. Depending on the purity required these methods can be used independently or in a combination. In the floating method the powdered ore is put into a solution which has an agent to create froth, an agent for collecting the gold and chemicals which will separate the contaminants. The solution is made to froth by the blowing in air bubbles so that the collecting agent along with the gold can stick to the air bubbles. The chemicals in the solution will keep the contaminants from sticking to the bubbles. The froth containing the gold is then removed from the surface.

Refining of gold by cyanidation involves use of chemicals to precipitate the gold from the ore. The powdered ore is immersed in a tank having a cyanide solution. Zinc is then introduced to create a reaction which precipitates the gold. The solution is then filtered to separate the gold from the solution.

Amalgamation is a process similar to cyanidation using different chemicals. In this process refining of gold takes place by the solution of ore being passed over plates that are coated with mercury. An amalgam of mercury and gold is formed which is later heated so that the mercury is let off as gas and gold is left behind.

Carbon-in-pulp method for refining of gold uses carbon for gold precipitation. The powdered ore is mixed with water to make it into a kind of pulp. Then the pulp is put into a cyanide solution, which will dissolve the gold. The carbon is added so that the gold bonds with it and starts to precipitate. After that a hot corrosive solution is used to separate the carbon from the gold.

Another popular method used for refining of impure gold is smelting. Smelting is only used after the ore has been separated from the gold and if the gold needs further purification. In this method the gold is heated along with "flux" which is a chemical substance. The flux has the property of bonding with only the contaminants and a slag is formed which floats on top. This is removed and a pure gold precipitate is left behind.

Leave a Comment



jfhfhgstgtset said:

fgd rtgrgtr tq t

making mozzarella cheese said:

Refining of gold is a pretty hard thing. I don’t think anyone can actually do this so easily. Refining gold has several stages and it is thanks to you that I could learn all about those stages. I am sure that this will help me in the future.

Replica Handbags said:

The growing accepting of Louis Vuitton was so abundant that 1987-1988 profits rose to 49%. Added branches were in Beijing, Morocco, India, Russia and South Africa.

clash of clans hack tool | subway surfers cheats said:

At this point you'll find out what is important, it all gives a url to the appealing page:

buy vine followers | buy youtube views said:

This is a wonderful article, Given so much info in it, These type of articles keeps the users interest in the website, and keep on sharing more ... good luck.

Download Documentaries said:

Very good presentation on how to refine a gold.Keep up the good work. said:

These type of articles keeps the users interest in the website

off road gear for trucks huntington beach said:

The article helped us understand how the gold can be refined to its pure state. I have learned this in schools, and your article helped me to refresh my memories and know in detail about god refining. Thanks.

low cost tablets said:

This article shares the procedure of refining of gold. I think it’s an expensive method to do. The complete details have been shared here in this article. I am expecting more posts on this blog. Keep updating!

garage door replacement said:

This article shares about the refining method of gold and I think this is one of the best opportunities to know these details clearly. I am really grateful to you for sharing this informative article. Keep updating more!

ipad wholesale said:

This is really an interesting article. I think from this article I am able to find some interesting situations comparing Moses and Trump. Now Trump is the U.S. President. So I think he is the most powerful man in this world today.

eye mask said:

I am really glad to read about the wonderful movie which conveys a good theme and of course, such movies are the ones give courage to do more powerful and influencing movies in the future. Keep sharing more posts here!

louvre museum tour said:

Gold is the most charming and valuable metal. We all love getting gold ornaments, but very few are aware about the process behind this. You have helped us know about the gold refining and how it is available in the form we get from shops. Thanks.

Roughneck Definition

Roughneck Definition Oil Jobs Canada

Canada is one of the top 10 oil producing countries. This is because of the discovery of vast amount of deposits of oil sands in the region of Alberta. Canada also has perfected some of the cost effective methods of oil refining and along with the discovery of the massive...

read entire definition