An automatic gold refining system for a jewellery workshop is a turnkey, large industrial gold refining plant that recovers high-purity gold from 12K scrap with minimal loss.
It integrates pre-treatment, gold refining, separation of Cu / Ag / Zn, filtration, gold recovery, washing and drying, silver recovery, gas treatment / scrubber, and final melting/casting into one automated workflow. Designed for jewellery manufacturers and refiners, it ensures final gold purity ≥99.99 while reducing labor and environmental risk.
Why Your Jewellery Workshop Needs a Industrial Gold Refining Plant
If you process 12K jewellery scrap, you face three constant pressures: gold loss, inconsistent purity, and rising labor costs. A industrial gold refining plant solves these problems by automating the entire process—from scrap intake to final gold bars.
Key Stages of the Gold Refining and Extraction Equipment
Pre-treatment: Preparing 12K Jewellery Scrap for Refining
12K gold is 50% gold with copper, silver, and zinc. Pre-treatment sorts, grinds, and incinerates scrap to remove organics, then washes it to remove surface contaminants.
Gold Refining: Achieving ≥99.99 Purity with Low Gold Loss
In the refining reactor, leaching dissolves gold while base metals stay in residue. A selective reducing agent precipitates gold powder at ≥99.99 purity.
Separation of Cu / Ag / Zn: Efficient Base Metal Removal
The remaining solution contains copper, silver, and zinc. Automatic pH adjustment and selective precipitants remove copper and zinc as sludge and recover silver separately.
Filtration and Gold Recovery: Maximizing Precious Metal Yield
Pressure filtration and fine-mesh membranes capture micron-sized gold particles. The filter cake is re-slurried and re-filtered, so over 99% of gold is recovered.
Washing and Drying: Clean Gold Powder for Melting
Gold powder is washed with hot deionized water until rinse conductivity meets standards, then vacuum-dried at low temperature. The result is clean, dry, free-flowing powder.
Silver Recovery: Turning By-Products into Value
Silver is precipitated as silver chloride and reduced to metallic silver at ≥99% purity. It can be sold or reused, turning waste into profit.
Gas Treatment / Scrubber: Meeting Environmental Standards
The scrubber neutralizes NOx, SOx, and acid vapors via multi-stage wet scrubbing and activated carbon filters. Emissions meet EU and US standards, with automated pH and pressure monitoring.
Final Melting and Casting: Ready-to-Use Gold Bars
Dried gold powder goes into an induction furnace. Automatic temperature and atmosphere control ensure homogeneous melting, and the molten gold is cast into ingots or bars with ≥99.99 purity.
Why Choose Our Automatic Gold Refining System?
Low gold loss: Closed-loop filtration and recovery ensure maximum yield.
- High purity: ≥99.99 gold meets LBMA standards.
- Designed for 12K scrap: Specifically engineered for jewellery workshop waste.
- Automatic operation: Reduces labor by up to 70% and eliminates human error.
- Environmental compliance: Integrated scrubber and waste treatment.
- Complete solution: From pre-treatment to final casting, all in one plant.
Boost Your Profits with Automatic Gold Refining
Investing in an automatic gold refining system for your jewellery workshop is a direct path to higher profits. Contact Guanma Machinery for gold refining solutions and a quote.
📩 Get Your Free Quote Today
Contact us today to discuss your project, capacity requirements, and target materials. Our team will reply within 24 hours with a customized proposal. You can also reach us directly at [email protected] — we are here to help!
