AURA GOLD RECOVERY AGENT

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Product Short Description: Uses of AURA leaves no gold residues in the solution.
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Other TYPICAL Purification method of GOLD

Dissolve Gold Scrap into to aqua regia solution and heat the solution slowly, do not boil.  Leave the solution at least 1 hrs then Extra nitric of the gold solution can be neutralized with urea addition till the point where the urea does not react any more. Then use Na2SO4 (  sodium metabisulphite )  is better for dropping the gold (free electrons greater reactivity).   Rest solution 24 hours. Then filter precipitate.

Or you can use  ferrous sulphate in place of Sodium metsabisulphite. Second, for neutralisation you add urea and add zinc dust to reduce all metals.

Method Precipitate the GOLD with sodium metabisulfite/ zinc :
Recover gold from Filings, Setting, Waste water, Consumables used in production, Emery papers, and sweeps from the production floors then dissolve into aqua Regia solution, Let it work 1 night or simply heat it up for a while to shortened the process and on filtration precipitate it. Filter the solution and neutralize it with Urea or just heat it up until all of the nitric vaporized. Watch out not to lose any precious metal during the heating. Test the pH. Precipitate gold using sodium metabisulfite / ferrous sulphate / zinc.


Gold precipitate from aqua regia solution by using hydroquinone. It was so simple and attaining 99.99% purity after firing was an incredible delight.
Refining the silver chloride left over from the solution was a little more of a chore but I got to within 80%.
 

Method to precipitate the Gold with Hydrazine Hydrate : 
Recovere all gold from working area then dissolve all into Aqua Regia Solution. Leave this solution for 10 -12 hrs to complete precipitation, then Filter it out. And addition of Hydrazine hydrate 64 or 85% (liquid)  works well  to precipitate gold from  acid gold plating baths which contain HAuCl4 solution.
 

After addition of Hydrazine Hydrate you can practically see big brown spongy ball like gold getting precipitated & once all the gold in the solution has precipitated the solution at the top has lot of white foam, which indicates the end of precipitation. Finally neutralise the solution with 25% urea solution.
This will give you the necessary result in recovering pure gold.
 

We let the solution stand overnight to settle down & recover gold from it by washing it with water.


Hydrazine Hydrate also used in GOLD purifiaction faxctory.  Remember Hydrazine Hydrate does not work well with alkaline solution.
NOTE : You use hydrazine hydrate for gold precipitation. Don't add urea in gold chloride solution.
You can also dilute hydrazine hydrate with five parts of water, that is 1:5. Then you add it in your gold chloride solution. You can get exact value by checking your pH level of gold chloride.
Hydrazine Hydrate Reaction can be easily understand by this reaction :::

PtCl4+N2H4=Pt+N2+4HCl
4AuCl3+3N2H4=4Au+3N2+12HCl
4AgNO3+N2H4=4Ag+N2+4HNO3.



  
Aqua Regia :  3 HCL+1 Nitric Acid.

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Alkali Neutralizer

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Product Short Description: Alkali Neutraliser is a acidic solution
Product Technical Specification:

Appearance :  Acidic Blend liquid; mixes with water
pH : Acidic
Specific gravity : 1.05 - 1.1
Solubility in water : miscible

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Acid Neutralizer

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Product Short Description: Alkaline solution for the neutralisation of acidic solution
Product Technical Specification:

Appearance : dark pink alkaline liquid; mixes with water
pH : 12.0 ± 0.5
Specific gravity : 1.14 - 1.16
Solubility in water : miscible

Remarks:

Acidic water causing problems for system. Acid neutralizer help to raise the pH levels.

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ZINC METAL GRANULAR

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Product Short Description: ZINC METAL GRANULAR
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Scale Dissolver 2000RX

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Product Short Description: Scale Dissolver delivers the optimal pH conditions for sulphate scale dissolution in many oilfield environments
Product Technical Specification:

Typical Physical Properties
Appearance..................................Clear colourless liquid
Density..........................................1.15-1.17 g/cm³ @ 20°C
Pourpoint.......................................<-4°C
Flashpoint,PMCC..........................Not exhibited
pH, concentrated product..............10.0-11.0
Solubility.........................................Water 

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BORIC ACID POWDER

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Product Short Description: BORIC ACID LR POWDER
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Boric Acid Uses
Fused products (glass, glass fibre ceramics, frits, glazed, porcelain enamels)
As fluxes and metallurgical operation (welding and brazing steel industry (paste fluxes, soldering fluxes)
Boron Chemicals (boron salts, boron trifluoride, boron phosphates, boron fluo-borates, borate ester, ferro-boron and others)
Catalysts (cyclohexane oxidation, hydrocarbon oxidation)
Nuclear applications, nuclear power plants
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Sodium Nitrite Liquid Solution

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Product Short Description: Sodium Nitrite is used in various industries. In the Pharmaceutical Industry it is used as an intermediate in production of saccharine. In the textile industry as a bleaching agent and in the Rubber Industry as a rubber foam blowing agent.
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Sodium Hydroxide Solution

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Product Short Description: Sodium Hydroxide Liquid General Use: Drinking water treatment, papermaking and other manufacturing applications, Detergent and soap industries etc.
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Cobalt Metal

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Product Short Description: Cobalt acetate is a powerful oxidation catalyst
Product Technical Specification:

Cobalt Metal melts at 1493 degrees centigrade and boiling point 3100 degrees centigrade. 

Remarks:

Cobalt Metal used as :
For Chemical Products

Petro Refining, Petrochemical Catalysts.
In paints as a paint dryer and various dyes
Cutting tools and diamond cutting
Hybrid car and telephone batteries
Super alloys
Aerospace Industries
High speed Alloys
Glass and Ceramics
Animal feed industry
Main constituent of high temperature and high 
performance alloys
Improves strength property and increases melting point
Permanent Magnet

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Selenous Acid

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Product Short Description: Selenious acid is a key component of the Mecke reagent used for drug checking
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