Refining Plant

Working Principle

The system for a correct dust laying is made by a special scrubber tower where the noxious vapours are channelled into a tower with their consequential speed reduction. From the dome tower, a drainage system homogeneously spread a neutraliser agent specific for each kind of vapour.

• Refinery is a procedure used to extract pure metal from an alloy. This is an ancient process,but still used for its simple operation, cheap, too!
• By our compact refining plants, it is possible to achieve a purity of the treated metal close to 99,99%.
• With our plants the purity obtained is very high, never less than 99,95%.
• Refinery is made by the dissolution of the entire alloy mass into Aqua Regia by the pure gold precipitat ion in powder form to be consequently washed.
• With this process it is possible to recover the silver as insoluble silver chloride. Then, by the right procedure, it will be possible to reduce the metallic silver.
• Thanks to the right vapour speed modulation and to the intensity of the reactor drainage, the scrubber neutralise the fumes until the 99%.
• With our systems is possible to normalise and optimise the concentration of the agent by the PH-metre and a dosing pump.

Big Gold Refining Plant	Big Silver Refining Plant

Technical Features

• The installation is complete of: Tower sizes: Height mm 3500, Diameter mm 600
• Bed of Rashing rings made in PP
• Sprinkled by sprayers made in PVC
• Recycling pump with impeller and dipping part made in PP
• Drops separator
• Well dimensioned aspirator in PVC which has PP impeller on the tower outlet;
• Piping in PVC
• Tank for solution holding, equipped of vertical pump made in PP for liquid recycling
• Inspection window for rings charge and discharge
• Automatic dosing pump
• pH-meter to control the purity of the rinsing water
• Capacity: 1500 m3/h
• Overall dimensions : 700 x 1500  x 3500h mm

Small Gold Refining Plants

Small Silver Refining Plants

Gold Potassium Cyanide Production Plants

Electrolytic Gold Refining Plant

Working Principle

Electrolysis is a technological process that utilizes the electric energy generated from a current rectifier and from the technical features of acid solution. The metal to be deposited (in this case Au) is melted by a liquid solution called gold chloride. The metal to be refined is generally composed of almost pure gold (min. 995,0‰), previously melted and poured in a special mould called ANODE which will be placed to the positive pole.
The cathode, a very thin plate of pure gold (999,9‰) will be placed to the negative pole. By means of a proper electromotive force and for the electrolytic bath characteristics , the metal anodes will gradually dissolve; at the same time, through the natural pole attraction between electrodes, gold migrates towards the cathode under metallic sponge form, in the plunged cathode surface.
Once the operation is over, the initial cathode and the total gold sponge deposited , are properly washed , melted and prepared for the following working phases. Being a selective process for noble metals, when the operation ends, the cathode will carry only an elevated fineness gold deposit: 999,9‰.ALWAYS GUARANTEE. Productivity is to be considered in 24 h. cycle and taking into consideration the number of anodes used in the cells, following from the morning these operations:

• Cathodes recovery / washing and melting
• Recovery of anodes pieces / washing
• Melting of new anodes
• Bath maintenance (acidity and gold analysis)
• Bath filtering / parameter correction
• New cathodes positioning / pre-heating
• New anodes positioning
• Initial current setting
• Gradual current increasing up to proper parameter achievement
• Control of baths and adding systems levels

Model: ORS Eau20

Refined capacity: per day over 20 Kg. Working cells: 02 Heating system: PTFE wire Power consumption Kw: 4,5

Model: ORS Eau30

Refined capacity: per day over 30 Kg. Working cells: 01 Heating system: PTFE wire Power consumption Kw: 5,0