Silver refining - Alternative to nitric acid? : Silverbugs

Hi guys, Recently I got into silver refining using nitric acid prior to melting, which worked great and resulted in 95-98% pure silver. However recently in my country nitric acid (among many other chemicals) has been banned for personal use and have become next to impossible to get your hands on.

Refining Karat Gold and Silver Jewelry using Inquarting ...

Dec 17, 2010· The Inquartation method is one of the most common method of refining low karat gold jewelry (9K-14K) and silver such as sterling silver... Inquarting don't usually applied for high karat gold jewelry (18K-22K) since they have low silver content and can be dissolved directly with Aqua Regia.

Gold parting - Wikipedia

Silver was removed by filtering and gold was then recovered by evaporating the liquid and heating the residue. Nitric acid was suitable for separating small quantities of gold from silver and Aqua regia used to separate small quantities of silver from gold. Aqua regia acid process is used by refiners of scrap gold used in jewelry manufacturing.

refining silver without nitric acid?? - Gold Refining ...

Jan 10, 2014· If you can get nitrate's and sulfuric acid and learned to make nitric acid and distill it you could then use it to refine silver, but I do not think you would make much profit on a small scale doing so. If you can easily buy nitric acid and the cost is so high, you may not make a profit spending that money on refining silver.

Gold Refining Purify Process - jewelry-tutorials.com

When I use this refining method, I regard the purity of the gold as 22kt, and I alloy it accordingly down to 18kt or 14kt. This gives me a safety margin so the gold is a slightly higher purity than I stamp it. Safety disclaimers notwithstanding, this process uses nitric acid at 70% concentration, and caution must be used.

How to Prepare Aqua Regia Acid Solution - thoughtco.com

Aqua regia is an extremely corrosive mixture of nitric and hydrochloric acid, used as an etchant, for some analytical chemistry procedures, and to refine gold.Aqua regia dissolves gold, platinum, and palladium, but not the other noble metals.Here's what you need to know to prepare aqua regia and use …

Refining Electronic Scrap---- Can't get nitric acid any more

Refining Electronic Scrap---- Can't get nitric acid any more. A discussion started in 2006 but continuing through 2018. 2006. Q. I've been working electronic scrap for over 20 years now as a hobby. I used nitric and distilled water to get rid of most base metals and then refined with aqua regia as normal.

Gold processing - Refining | Britannica.com

Gold processing - Gold processing - Refining: Gold extracted by amalgamation or cyanidation contains a variety of impurities, including zinc, copper, silver, and iron. Two methods are commonly employed for purification: the Miller process and the Wohlwill process. The Miller process is based on the fact that virtually all the impurities present in gold combine with gaseous chlorine more ...

1 Liter (34oz) Nitric 70% Acid (HNO3) TOP ACS Lab Grade ...

highest quality - start with the best chemical reagents and get the best results • made in usa ideal for gold and precious metals refining and recovery • refiners use it to achieve .9999 fineness f.w.: 63.01 • cas # 7697-37-2 • un 2031, nitric acid 8, 5.1 pgii packaging & shipping: we ship using safe & secure, d.o.t. approved 4g packing and ship in compliance with all applicable d.o.t ...

Platinum Catalysts and Nitric Acid Production - MGS ...

Sep 17, 2014· The MGS Precious Metals Blog. Manhattan Gold & Silver is an industry leader in precious metal pricing and refining with more than 30 years of experience. During our time in the business, we've found the topic of precious metals to be a vast and interesting one. ... Platinum Catalysts and Nitric Acid Production. September 17, 2014 04:00 ...

How to Refine Gold with Urea - Greenway Biotech, Inc.

Instructions Weigh your gold smelt. For every ounce of gold, you will need a container with a 300-milliliter capacity. So, if you're refining 5 ounces of gold, you will need a 1500-milliliter container or about 1 ½ quarts. Add 30 milliliters of nitric acid for every ounce of gold. So, if you're refining 5 ounces of gol

Aqua regia - Wikipedia

Aqua regia is primarily used to produce chloroauric acid, the electrolyte in the Wohlwill process for refining the highest quality (99.999%) gold. Aqua regia is also used in etching and in specific analytic procedures. It is also used in some laboratories to clean glassware of …

Best and Easiest way to refine gold dust to get 99.9% purity

You use hydrazine hydrate, dilute as 500 ml in 4500 ml water, and use as a gold precipitating chemical. You are doing Inquartation process which is not being done by you in the proper way. You have to add three times silver of your any karat gold. Dissolve it in nitric acid until all silver dissolves in nitric acid. Here you're doing something ...

Gold, Mining and Prospecting: A simple test for gold

Gold is not called the noble metal because it is used to make crowns, but because there are very few things that can cause it to dissolve. Aqua regia, a mixture of one part of nitric acid and three parts of hydrochloric acid is one of them. It can also be dissolved in a solution sodium cyanide, and a …

No nitric acid - Gold Refining Forum.com

Dec 12, 2010· We can see there that what is being used first is "about half a gallon of muriatic acid" with about a "quarter gallon of peroxide" and soon after we can hear "this particular mix that i've used is really taking the gold off fast". So, how much acid should be used? Just about the acid to cover up the foils? That way I can use less if I have a ...

How to Refine Gold by the Acid Method - ishor.com

For this reason, if you're using nitric acid, it must be done outdoors, away from anything that may be damaged by exposure to these fumes. If you're using a nitric acid substitute, it should still be outdoors, or within a self-contained system that neutralizes fumes. Refining large quantities? See: Large Scale Gold Refining by Aqua Regia Acid ...

Nitric acid - GoldRefiningWiki

Nitric acid (HNO 3), is a colorless oxidizing acid. It is the only pure acid that can dissolve copper and silver, making it an important acid for refiners. It is used both by itself when working with silver or mixed with hydrochloric acid forming aqua regia.Salts of a metal and nitric acid is called nitrates.

How to Refine a Gold Smelt | Sciencing

How to Refine a Gold Smelt ... Add 30 milliliters of nitric acid for every ounce of gold. So, if you're refining 5 ounces of gold, you would need to add 150 milliliters to the container. Allow the gold to sit in the nitric acid for 30 to 45 minutes.

REFINING-RECOVERY AND REFINING WITH JUST NITRIC ACID ...

add the nitric substitute acid,just enough to cover the materials. without heating the bath it will take 3 to 10 days for the acid to desolve all the non-gold metals. if you heat the bath it can be finished in hours instead of days. pour off the bath through a paint filter to catch the gold flakes and pins that are floating.

where can i buy hydrochloric acid & nitric acid used for ...

Mar 25, 2009· i was told that i could make nitric acid by mixing 1qt sulfuric acid +1/2 cup sodium nitrate. i am new to refining and need all the info i can find. i am guessing that i can buy hydrochloric at an auto parts store because i think it is used in car batteries. but i want to buy the acids/chemicals already made to make it as easy as possible during my first few attempts at refining. i have pounds ...

How to Refine Gold: 2 Major Techniques of Gold Refining ...

Two (2) major techniques for refining gold. Generally, gold can be refined using these two-best-known gold-refining procedures: Aqua Regia and gold electrolysis. Both of these techniques can be used to separate gold from other metals. This is because a little piece of other metals in gold can change its properties and value.

Dummies Guide to EASY silver bullion refining at home as a ...

Simple care, caution and common sense is all that's needed and you'll be perfectly safe. In all the years that I've been refining silver and gold for a hobby and using nitric acid, not once has there been an issue or concern. If any is spilled on a surface, just immediately rinse off with plain water.

Dummies Guide to GOLD bullion refining at home as a long ...

3. apply a mixture of 1:3 nitric/hydrochloric acid (aqua regia) to the gold to completely dissolve it 4. filter the resulting yellow liquid to remove any remaining impurities 5. neutralize any left over nitric acid still in the yellow liquid with urea 6. use SMB to precipitate the brown coloured "gold sediment"

Gold & Platinum Refining by the Acid Method - Precious ...

A dry, powdered, non-hazardous replacement for nitric acid when making aqua regia with muriatic acid. Nitric acid is highly corrosive and highly toxic nitric oxide fumes when used in the aqua regia process of refining precious metal. Additionally, it is expensive and difficult to obtain.

How to Refine Gold (with Pictures) - wikiHow

Jul 07, 2012· How to Refine Gold. You may want to make some extra money by refining your own gold at home, or you may be a jeweler who wants to refine gold in-house. There are multiple ways to refine gold on a small scale as …

Sulfuric acid - GoldRefiningWiki

Sulfuric acid (also spelled sulphuric acid or in old texts as oil of vitriol) is one of the strong mineral acids and has a number of practical uses in refining.The acid differs from hydrocloric acid and nitric acid in that it contains two hydrogen atoms that can be ionized in water. This means that concentrated sulfuric acid and diluted can appear as two different acids.

REFINING SILVER IN NITRIC ACID SUBSTITUTE

let it cool if heat was used. be sure to filter the liquid if you have sediments in the bath. to drop the silver out of the nitric acid use common uniodized table salt. add the salt slowly,you will begin to see a white mud or curd begin to fall from the liquid. add salt in 15-20 minute intervals until no more silver falls.

How to Refine Gold With Nitric Acid | Sciencing

Though gold is valuable, the most common sources of gold are rarely pure. Whether it is freshly mined gold ore or a refined gold used in jewelry, contaminants and unwanted minerals are usually present. Nitric acid can be used to refine gold, but you must be careful during the process.

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