Static Glass Refining Plant

Static Glass Refining Plant IAO10Static Glass Refining Plant IAO20Static Glass Refining Plant IAO50-20
Static Glass Refining Plant IAO20-20
Static


Introduction to Aqua Regia

The aqua regia refining process is used to refine gold alloys using a combination of acids and chemical products. The aqua regia solution consists of a mixture of hydrochloric acid HCL and nitric acid HNO3.

The refining process can be broken down into several steps:

  • Analysis of the gold to be refined
  • Production of Au grains or thin strips
  • Refining process
  • Separation and recovery of the AgCl
  • Precipitation of the gold
  • Filter and rinsing of the gold powder
  • Analysis of the refined gold
  • Melting of the Au into final required form

Main advantages:

  • Very compact plant
  • Easy handling
  • Low operation costs
  • No harmful fumes
  • No gold losses
  • Automatic acid loading

Refining using Aqua Regia

Best suited for gold with an initial purity of at least 600/1000. Initial purities below this value can reduce the production capacity as well as increase process times.

Recommended maximum silver content: 10-12 %. Percentages above these values can reduce production capacity as well as increase process times.

The gold should be either melted into fine grains – using a melting furnace and a grain tank – or very thin strips.
Strips are ideal due to their large surface area and complete dissolution when emerged in the aqua regia solution.

Grains, due to their irregular shape and size, are more difficult to dissolve and often leave leftovers in the reactor. On the other hand, they are quicker to produce than strips.

Features:

  • Anti-acid polypropylene hood containing all the necessary equipment. Designed to recover acid losses
  • Electric heater with potentiometer
  • Pyrex reactor with fume condenser
  • Filter unit on wheels with a compressed air diaphragm pump to transfer the solutions
  • Gold cementation tank
  • Graduated tanks for HCl and HNO3. Acid transfer from the reactors by vacuum.
  • PPl tray acid containers (HCl and HNO3) are stored.
  • Compressed air diaphragm pumpto transfer the solutions
  • Polyethylene tanks, fitted onto a trolley to store king waters.
  • Metering pumps to transfer the acids into the reactors.
  • Condensers in pyrex glass.

The above system can be customized upon request of the customer, the photos submitted are just one example of the many possible system solutions.

Based on the needs of the customer is possible to create customized systems, with suitable characteristics for the process requirements.

TECHNICAL SPECS IAO10 IAO20 IAO20-20 IAO50-10 IAO50-20 IAO50-50
Power supply Single phase Three phase Three phase Three phase Three phase Three phase
POWER 1 kW 2.5 kW 7 kW 5.3 kW 7 kW 8 kW
Refining capacity* (kg/9h) 3 Kg 6 Kg 12 Kg 20 Kg 22 Kg 32 Kg
Dimensions (mm) Length:1100
Depth:700
Height:2000
Length:1300
Depth:2400
Height:2545
Length:1300
Depth:2400
Height:2545
Length:1300
Depth:3450
Height:2550
Length:5000
Depth:3300
Height:2550
Length:5000
Depth:3300
Height:2550
Weight 85 Kg 290 Kg 550 Kg 450 Kg 500 Kg 500 Kg

* The daily refining capacity is referred to gold alloys having a gold minimum content of 600/1000 and a silver maximum content of 100/1000.

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