Gold Refining by Electrolysis Process

ALLOY BATCH CHARGE: 6-12+ Kg ALLOY MAXIMUM PER CYCLE

WORKING CYCLE TIME IN 24 hours = 3 BATCHES

PURITY CAN BE OBTAINED: FROM 999,0/5 TO 999,9/1000

• Main  structure and suction hood made in pps and complete with frontal sliding transparent panel.
• 2 electrolytic tanks made of pps with 20 mm thickness.
• Electrolytic tank dimension:500x300x400h mm each.
• Approx volume= 40/45 liters each tank
• Suction system under the hood.
• Grazing suction system over the tanks
• Suction pipeline placed behind the hood.
• This pipeline is easily dismountable to allow cleaning operations and recovery of the gold chloride deposited inside the pipes during  the electrolytic refining process.
• Tipping extractable cover over each electrolytic  tank.
• Removable safety tank placed under electrolysis  tanks.
• 1 condenser made of pp and complete with  internal pvdf pipe coil placed on the hood side.
• The condenser must be connected to an external   cooling system.(chiller or water recycling tank
• That will be quoted separately.  the condenser is also equipped with a  counter-wash system that allows total recovery  of the gold chloride deposited inside the condenser formed during the fumes suction of the  electrolytic refining process.
• The fumes exit pipe from the condenser is  ø 160 mm complete with butterfly valve.
• Main switchboard to control all the plant  functions (t° control, recycling pumps etc.)
• Electrical connection:220 v or 380 v  threephase.
• Absorbed power: 4 / 5 kw/h approx.
• Overall dimensions: 1800x750x1800h mm

• 1 magnetic propeller pump made of pvdf for  the continuous recycling of electrolytic  solution into the tank.
• 1 thermo-regulated heater made of Teflon which absorb 1500 watt
• 1 level control sensor device.
• 3 rear copper bars (2 positive + 1 negative)  for current rectifier connection and complete  with anodes and cathodes contacts.
• 5 cathodic bars made of titanium complete  with n°5 special hooks in titanium for holding the cathodes made of rolled thin pure gold.
• 4 anodic bars made of titanium complete with n°4 special hooks in titanium for holding the gold anodes which are covered with  meraklon cloth bags in order to collect any  eventual metallic impurities.

• With an electrolytic solution containing about  70/80 gr aucl3 in appropriate concentration  each tank can produce about 6/12 kg  fine gold  (999,9) every 24hrs.
• To increase the production is possible to change  the composition of the electrolytic solution adding more AuCl13

• RECYCLING TANK FOR WATER USED IN THE CLOSE CIRCUIT COOLING SYSTEM OF ELECTROLYTIC GOLD REFINING PLANT.
  • volume = 1200 lts. approx
  • double reinforcements on the tank
  • recycling pump with immersion impeller 700h mm.
  • main switchboard
  • absorbed power: 0.75 kw
• STABILIZED CURRENT RECTIFIER TYPE 1000A-10V WITH 2 POSITIVE EXITS AND 2 DIGITAL VOLT-AMPEREMETERS TO CHECK CURRENT IN ELECTROLYSIS CELLS 1 AND 2.
  • max. output: 1000 ampere / 10 volts
  • forced air cooling system
  • overall dimensions: 700x700x1200h mm.
• 2 POSITIONS HAND-WASH BASIN MADE OF P.P.8 mm WITH FORCED FILTRATION SYSTEM.
  • acid proof discharging pump with filter:0,25 hp.
  • 2 taps, level sensor and decantation tank with cartridge filter
  • overall dimensions: 750x450x1300h mm
  • weight:  approx. 55 kg.
• THERMOSTATIC STOVE DRYER T5510 FOR DRYING GOLD AND SILVER GRAINS, CRISTALS AND JEWELLERY ITEMS WITH 10 EXTRCTABLE PLANES 50x50cm AND 6 EXTRACTABLE PYREX CONTAINERS
• FUMES WASHING TOWER Ø 600 mm. FOR WASHING ACID EMISSIONS FROM PRECIOUS METALS CHEMICAL PROCESSES.
  • 1 BASAMENT USED AS RECYCLING TANK.
  • 1 RECYCLING PUMP:0,25 Kw.2750/3350 rpm
  • 1 FUMES WASHING SECTION FILLED OF SPECIAL RINGS.
  • 1 SUCTION FAN: 0,55 Kw – 2700 rpm.
  • 1 MAIN SWITCHBOARD
  • TOTAL ABSORBED POWER: 0.8 Kw. APPROX.
  • OVERALL DIMENSIONS: 700x1500x2800h mm.