##tihuan2##Hi there, In this period I work on a scrap with 80% of copper, 12% of Silver and 8% of palladium. The process is this: - Nitric to dissolve the CU/AG/PD alloy - Than i use HCL to precipitate Ag as AgCl-I'm looking for a solution to precipitate Cu without precipitate palladium - After this i will add Ammonia to the solutions and than i will dorp …
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##tihuan2##Copper can be extracted from non-sulfide ores by a different process involving three separate stages: Reaction of the ore (over quite a long time and on a huge scale) with a dilute acid such as dilute sulfuric …
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##tihuan2##If you have a low enough base metal or silver based nugget it will dissolve the silver and many base metals leaving the gold and any other element not affected by nitric, if you have PGMs and reasonable silver content the PGMs will also dissolve in the nitric, by then cementing the solution with copper the silver and some of the PGMs will …
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##tihuan2##If you can get sulfuric acid, and an old transformer (steel laminates), you can make ferrous sulfate (FeSO4) also called copperas which is very good for precipitating gold from a gold chloride solution, dilute the sulfuric to 10%, cut welds on transformer (separate copper from the iron) incinerate the shellac from the iron, cut the clean iron ...
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##tihuan2##However, it is not easy to find silver in its pure form. It is often found in metallic ores that contain quantities of other metals, such as copper. To separate silver from an ore containing a quantity of copper, you need to heat the ore sample to a level sufficient to melt the silver but leave the copper in a still-solid state.
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##tihuan2##Sort the remaining scrap into piles for later recovery of lesser metals and smaller amounts of precious metals. Steel, copper, zinc, aluminum, brass and other metals make up a significant amount of these items and should be recovered to maximize your profit. Stripped circuit boards have some gold but not enough to recover manually.
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##tihuan2##Distillation. Distillation is an effective method to separate mixtures that are comprised of two or more pure liquids. Distillation is a purification process where the components of a liquid mixture are …
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##tihuan2##After you have cut and sorted your #1 copper, it's time to look at what you have left over. When you cut copper pipe, you will probably be left with some pieces of paint, tin solder, or brass fittings attached. This will be separated as a #2 copper and should be priced below your #1 copper price. Sometimes, copper pipes with oil residue …
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##tihuan2##With some borax, heat, and a little know-how, it's possible to extract pure gold from a sample of ore. This is because using borax as the flux reduces the melting point of all the elements in a piece of ore, including gold. While out in the field, a gold prospector can grind and wash a piece of ore, then mix it with borax in a plastic bag.
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##tihuan2##was351, Depending on gold to silver ratio content of the metal, the silver in aqua regia can make it hard to dissolve the gold as the silver chloride forms a crust keeping the acids from dissolving the gold, and then also the gold can make it hard for nitric acid to get at the silver to remove the silver copper from the gold. In your gold the silver ratio …
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##tihuan2##cement all the values using copper. either a copper buss bar or clean copper pipe. put the copper in the solution for 2-3 days. after this, any gold, silver, palladium or platinum will be in a black powder on the bottom of the container. siphon the solution from this powder and test with stannous chloride to make sure all PM's have …
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##tihuan2##The Canadian researchers' alternative is a solution of acetic acid and an oxidant — a nontoxic technique to dissolve gold, which is stripped from circuits in about 10 seconds, leaving intact copper, nickel, iron, and other metals in printed circuit boards. Dive insight: Traditional extraction costs $1,520 for one kilogram of gold.
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##tihuan2##With metal alloys, your best bet is to dissolve both metals and separate them chemically, based on their different properties. In some relatively rare cases, you might be able to melt the alloy and perform …
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##tihuan2##How do you separate metal alloys into their constituent elements, especially industrially? ... Here's a phase diagram for a copper-nickel alloy, which I think is a system where both components are …
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##tihuan2##Dear all, we have a small alluvial gold mine and the final concentrate is a mixture of fine gold and cassiterite (tin oxide). When we smelt it, sometimes some part of the tin goes into the gold and makes it grey and brittle. Why that happens, I don´t know . We first thought, it might be the smelting temperature (1200°C).
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##tihuan2##As we have noted before on this blog, gold-leaf-covered wooden frames usually contain extremely small quantities of gold. Separating that gold is usually not worth the effort and expense. …
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##tihuan2##We would like to show you a description here but the site won't allow us.
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##tihuan2##Flotation, cyanide leaching, and gravity separation are all effective methods for separating gold from copper ore, and the choice of method will depend on factors such as the type of...
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##tihuan2##The two seem to always be together. Silver and gold always compliment each other in jewelry designs. There are tons of songs titled "Silver and Gold." This blog is written by Manhattan Gold & Silver. But, when you need to separate this duo, an age old refining trick called "gold parting" comes in handy.
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##tihuan2##Roasting is a technique by which carbon and sulfur react with metal to separate the ore. For example; copper acetate is reacted with chemicals to separate the copper, ore and residue. This mix is reduced, which involves placing it under extremely high temperatures, injecting a reagent (such as hydrogen or carbon dioxide), and …
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##tihuan2##Test the density of the metal. The most accurate way to test the density of the metal would be to measure the volume and the mass, then calculate the density mathematically. Luckily, there's a faster and easier approach.
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##tihuan2##To separate gold from rock at home, place the rocks in a metal container and smash them with a sledgehammer into small pieces. Grind the rock into powder with a metal rod and place it in a mining pan. Sift with water to expose gold flecks. Prospecting for gold can be a fun hobby, though it's a lot of work! You may be able to harvest gold …
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##tihuan2##A user asks how to separate gold from copper by heating the alloy to 500*F. Other users reply that this is not possible or practical, and suggest reading the forum for …
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##tihuan2##However I am confused how the process will go with the mixed lead/copper/silver. Knowing that copper will precipitate the silver nitrate how then will I separate the copper and silver since the copper will prevent the silver from being dissolved in the acid and the lead, I assume would precipitate the copper.
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##tihuan2##Smelting gold is also useful if you have jewelry or gold pieces that you never use. Selling pure gold resulting from smelting those old pieces will return more value and allow you to receive more cash with just a little …
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##tihuan2##One of the approaches taken to isolate the gold from the soil was called "panning". Dirt would be placed in the pan and covered with water. After thorough mixing, the pan is gently swirled to remove dissolved material while the heavier gold settles to the bottom of the pan. The gold is then separated from the mixture of soil and water.
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##tihuan2##The resulting copper sulfate solution is then subjected to solvent extraction to separate the copper from impurities, including any gold that may be present. ... B. Sceresini, Gold-copper ores ...
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##tihuan2##Exploiting efficient strategies for the selective separation and extraction of valuable metals from e-waste is in urgent demand to offset the ever-increasing depletion of metal resources, satisfy the sustainable supply of metal resources, and reduce the environmental impact from toxic metals. Herein, an asymmetric electrochemical system, …
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##tihuan2##Gold usually exists in nature in combination with other rocks and minerals. Some of these, such as silver and copper, may also be precious or semi-precious, but a variety of base metals are usually also present. Though several different techniques exist, any process used to separate metal from impurities or unwanted material is called refining.
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