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Aqua Regia & Fulminating Gold - Introduction

In 2005, at phantomplay.com (now expired), I found this very exhaustive presentation of Aqua Regia preparation from Ammonium chloride and Saltpeter ( Potassium Nitrate) ending to fulminating gold, which I thought to post here, not before having …

Solubility of Gold - Mineral Processing & Metallurgy

24-10-2016· Gold is readily soluble in aqua regia, or in any other mixture producing nascent chlorine, among such mixtures being solutions of (1) nitrates, chlorides, and acid sulphates—e.g., bisulphate of soda, nitrate of soda, and common salt; (2) chlorides and some sulphates—e.g., ferric sulphate; (3) hydrochloric acid and nitrates, peroxides such as permanganate, or chlorates; (4) bleaching powder ...

neutralize nitric acid in Aqua Regia - Gold Refining Forum.com

21-11-2012· How can I neutralize nitric acid in Aqua Regia? ... equal amount Urea with nitric acid. So, in this solution I have copper, silver and other metals because I try to refine gold directly from cell ... 40grams of ppins and boards from cell phones and I had add 80ml Hcl acid and 10ml nitric acid and o teespoon 5grams of sodium nitrate.

Aqua Regia - forum.alchemyforums.com

13-12-2009· (1) 50 mg gold (99.99% pure) were dispersed in 200 ml aqua regia to provide clusters of gold atoms. (2) 60 ml concentrated hydrochloric acid were added to the dispersion and the mixture was brought to boil, and continued boiling until the volume was reduced to approximately 10-15 ml. 60 ml concentrated HCl were added, and the sample brought to boil and checked for evolution of NOCl fumes.

Recovery of nitric acid and gold from gold-bearing aqua ...

Simultaneous solvent extraction using tributyl phosphate (TBP) was investigated. • Gold ion and HNO 3 from gold-bearing aqua regia solution successfully extracted.. Loaded gold and HNO 3 can be selectively recovered by stepwise stripping.

Sodium Nitrate, 1 lb Bag [1sn] | DudaDiesel Biodiesel Supplies

Sodium nitrate is used as an ingredient in fertilizers, explosives, and in solid rocket propellants, as well as in glass and pottery enamels; the compound has been mined extensively for those purposes. Sodium nitrate is commonly used in gold refining for making aqua regia which is used for recovery of gold, platinum and other precious metals.

Chile Saltpetre - Introduction, Occurrence, Synthesis ...

To create a hybrid aqua regia, which dissolves gold and other metals, hobbyist gold refiners also use sodium nitrate. Whereas the less popular uses include the substitution of potassium nitrate typically used in black powder, as an oxidizer in fireworks, and as a component in instant cold packs.

I have a solution of aqua regia containing gold, I made ...

If you want to neutralize nitric acid heat your solution to about 125 degrees f,add sulfamic acid in small increments until you no longer get any reaction.NEVER use urea as you can create urea nitrate,an explosive.After you neutralize the nitric a...

CN101570829A - Gold extraction method for aqua regia in no ...

The invention relates to the field of gold silver smelting technique, more particularly to a gold extraction method for aqua regia in no need of nitrate removal. The inventive gold extraction method comprises the following steps of: 1) adding NaOH solution having more than 30% of concentration or solid NaOH slowly into the gold-containing aqua regia under room temperature while agitating, and ...

Sciencemadness Discussion Board - Hybrid aqua regia from ...

12-02-2014· Hi, i have for a few months collected old circuit boards, and other electronic parts thats plated with gold and silver, and now i think that i am ready to harvest. I am going to dissolve it into aqua regia, but i dont have access to any nitric acid, and heard that it is possible to make some sort of NaNO3 aqua regia hybrid.

Recovery of nitric acid and gold from gold-bearing aqua ...

18-03-2020· The effect of TBP concentration on the extraction of mineral acid (HNO 3, HCl) and gold ions from the gold-bearing aqua regia solution was studied. The initial concentration (10–100 vol%) of TBP in the kerosene was varied keeping other factors constant (5 min contact time, temperature 25 ℃, phase ratio (O/A) 1 and Au concentration).

The Ultimate Aqua Regia Refiner's Guide | Shor International

The Ultimate Aqua Regia Refiner's Guide. What Is Aqua Regia? The anonymous alchemist, "Pseudo-Geber," was the first to document this acid-based technique for refining precious metals. aqua regia (Latin for "royal water") was the most popular method for refining precious metals such as Gold …

Aqua Regia Refractory Gold Ore Extraction Process

Aqua Regia Refractory Gold Ore Extraction Process. aqua-regia-refractory-gold-ore-extraction-process A process for the recovery of precious metal values from ores whereby the ore in particulate form is heated with a mixture of solid dry chloride and nitrate salts in the absence of oxygen The precious metal values are recovered in the form of the corresponding chlorides which are removed from ...

The Nobel Prize and Aqua Regia - Chemistry LibreTexts

17-08-2020· Because gold is so inert as a metal, it must be converted into an ion first, though this process is almost as difficult. Aqua regia's dissolving power is due to its properties as a mixture; it is comprised of both nitric acid and hydrochloric acid in a certain ratio. Each acid carries out a different purpose when dissolving gold.

Making Poorman Aqua Regia and Dissolving Metals in It. : 5 ...

Making Poorman Aqua Regia and Dissolving Metals in It.: Hello.With Hydrochloric acid 10 Moles per L or 31 percent with any Nitrate salt (Magnesium Nitrate, Calcium Nitrate, Sodium Nitrate, etc- expect ammonia nitrate due to the ammonia base) you can make weak Aqua …

poor mans aqua regia - Gold Refining Forum.com

28-12-2009· 2.AR Recipie 2= Poor Man's AR = 8 oz Sodium Nitrate (aka Subzero), 480 ml water, 960 ml Muriatic Acid plus heat. Used to dissolve high karat gold, gold powder, gold foils, dissolves Platinum when hot. Excess nitric must be evaporated off neutralized with Urea to pH 1 +/- 0.4, then drop gold …

Buy Gold Recovery Chemicals: Nitric Acid, Hydrochloric ...

Aqua regia is a corrosive reagent used to clean glassware and in gold refining processes. It is made by mixing nitric acid and hydrochloric acid in a 1:3 ratio. The name comes from the Latin 'royal water', as it can dissolve gold and platinum - metals associated with royalty.

Dissolving Gold in Poor Man's Aqua Regia - YouTube

14-01-2016· The whole proccess of dissolving gold in poor man's aqua regia and futher precipitation with SMB

WET-CHEMICAL ETCHING OF METALS

Aqua regia consumes itself and decomposes under formation of nitrous gases and chlorine gas. The etch rate of aqua Regia for gold is approx. 10 μm/min (at room temperature) and can be increased to several 10 μm/min at elevated temperatures. Palladium, aluminium, copper and molybdenum are also etched at room temperature in aqua regia. For

Gold Recovery Chemicals | E-waste recycling beginners guide

14-05-2017· AQUA REGIA as a gold recovery chemicals: Aqua regia word came from Latin which means royal water or king's water. It's named by alchemists because it can dissolve noble metals gold and platinum. It is a mixture of nitric acid and hydrochloric acid. The ratio of acids is 1:3 which means 1 part of nitric acid and 3 parts of hydrochloric acid.

Concentrate Nitric Acid | Oxidizer For Gold Recovery ...

Aqua regia is a mixture of nitric acid and hydrochloric acid, optimally in a molar ratio of 1:3. To prepare and refine Aqua Regia, combine three (3) parts of hydrochloric acid to one (1) part nitric acid in a glass container. To lean how to use Aqua Regia to purify gold, click here. Aqua Regia is used to remove noble metals such as platinum ...

Sodium nitrate and muriatic acid - Jewelry Discussion ...

chemistry. aqua regia is a mix of HCl, or hydrochloric acid (muriatic acid is very dilute HCl), and HNO3, ornitric acid. Sulphuric acid plays not part in the recipe for aqua regia. Sodium nitrate is a salt of nitric acid, and mixing this with muriatic acid will give a dilute form of aqua regia, since the result, once the

inorganic chemistry - Can aqua regia/royal water be ...

09-05-2020· I'd say yes, as Aqua Regia is the mixture of of HCl and HNO3. But the underlying thoughts make up a good question. The answer probably is in the mechanism, as if e.g sodium nitrate and sodium chloride would work, they would be used for the commercial process, as they are much safer to handle than Aqua Regia.

My Aqua Regia Story | RobertLovesPi.net

06-10-2014· The copper dissolves, replacing the silver in the silver nitrate solution, and silver powder forms, as a precipitate, on the surface of the copper. Thinking that a similar process could be used to precipitate out the gold from my gold / aqua regia mixure, I …

Sodium Nitrate (NaNO 3) – Rudraksha Allied Chemical Pvt. Ltd.

Hybrid forms of aqua regia can be prepared with the help of NaNO3. These hybrids also have the ability to dissolve gold. This compound is widely used as a food additive since it acts as a preservative. Sodium nitrate is used as an oxidizer in several types of fireworks. It is also a …

Tailiang Chemical Corporation Limited

Hobbyist gold refiners use sodium nitrate to make a hybrid aqua regia that dissolves gold and other metals. Less common applications include its use as a substitute oxidizer used in fireworks as a replacement for potassium nitrate commonly found in black powder and as a …

Gold from aqua regia with sodium sulfite. Use urea to ...

14-08-2019· Use urea to neutralize nitric acid.Gold from aqua regia with sodium sulfite.

aqua regia mistake - Gold Refining Forum.com

02-08-2010· OK this is my story I made aqua regia using the sodium nitrate/meuratic acid method and proceeded to dissolve about a pound of gold plated pins fingers and chips while capturing the fumes in several 1 gallon glass jars and reacting that with water to reclaim the valuable nitric acid.

Sciencemadness Discussion Board - HCl + NaNO3 - Powered by ...

08-03-2011· Gold salvagers/refiners affectionately call this mix "poor man's Aqua Regia" because nitric acid is usually more expensive and harder to get than Sodium Nitrate (for many of us). It is most effective if heated, but you don't need to heat it throughout the reaction with the metal itself, just pouring the really hot mixture over the gold parts is enough.

Aqua Regia & Fulminating Gold - Introduction

In 2005, at phantomplay.com (now expired), I found this very exhaustive presentation of Aqua Regia preparation from Ammonium chloride and Saltpeter ( Potassium Nitrate) ending to fulminating gold, which I thought to post here, not before having communicate them …

Noble metals dissolved without aqua regia | Research ...

Noble metals dissolved without aqua regia. Scientists in Belgium have developed a simple and environmentally-benign method for recovering precious metals from metal wires and spent automotive catalysts. Using highly-concentrated aluminium nitrate and aluminium chloride solutions, they were able to dissolve both gold and platinum group metals ...

Sodium Nitrate, 10 lb [10sn] | DudaDiesel Biodiesel Supplies

Sodium nitrate is used as an ingredient in fertilizers, explosives, and in solid rocket propellants, as well as in glass and pottery enamels; the compound has been mined extensively for those purposes. Sodium nitrate is commonly used in gold refining for making aqua regia which is used for recovery of gold, platinum and other precious metals.

refining gold with sodium nitrate - Hitlers Hollywood

Sodium nitrate is used as an ingredient in fertilizers and solid rocket propellants as well as in glass and pottery enamels the compound has been mined extensively for those purposes Sodium nitrate is commonly used in gold refining for making aqua regia which is used for recovery of gold platinum and other precious metals. More Detail

Aqua Regia - Alchemy Forums

12-12-2009· If permitted I'm beginning this thread to clear up some common misconceptions on this site concerning Aqua Regia, what it is, what it does and its action on gold and other precious metals. And for quite possibly the first time on the internet we will present a very clear and concise method of refining gold via the aqua regia method for free.

Sodium Nitrate | Shor International

A commonly used dry substitute for nitric acid when making aqua regia. This compound is significantly better than nitric because it is far less hazardous, fumes are reduced by 90-95%, is more easily obtained, and is far less expensive.

REFINING-MIXING INSTRUCTIONS AND SUPPLIES

aqua-regia liquid bath.(for desolving gold,and platinum group metals) PUT 1 CUP(APPROX 1 LB) OF SODIUM NITRATE INTO A CONTAINER PER EACH QUART OF AR YOU DESIRE. ADD 1 QUART OF HA(HYDROCHLORIC ACID=MURATIC ACID)FOR EACH CUP OF SN.