Practical Guide for Top Gold Recyclers

Almost all top golden recyclers worldwide follow three main steps. First, they test the scrap containing gold and confirm the price. Second, they work to lower costs and increase efficiency. Third, they focus on protecting the environment during recycling. Besides these, knowing which industrial scraps contain gold and the refining technology are also very important!

Three Key Practical Steps for Golden Recyclers:

1. Double Testing and Gold Content Calculation: Spectrometry is a basic test every gold recycling company knows. It helps find out if industrial scrap contains gold. But top recyclers do more. After spectrometry, they also use fire assay. This fire test finds the exact purity of the scrap. It stops scrap sellers from cheating with the weight or content.

2. Top Recyclers Focus on Lowering Costs and Increasing Efficiency: The first way to do this is buying large amounts of different gold scrap. Very few top recyclers can buy huge amounts at once and pay the full price right after checking the goods. DONGSHENG has this ability. Another way is developing new recycling technology. If a gold recycler cannot handle large amounts like DONGSHENG, it cannot upgrade or research new recycling technology.

3. Gold Recycling Must Be Legal and Green: Protecting the environment is very important now. Recycling industrial scrap can cause pollution. So, improving recycling technology is key. Different places have different environmental rules. The main goal is controlling emissions. Top recyclers improve their emission control systems. Most use bag filters and activated carbon to clean the smoke from melting.

What Scrap Contains Gold?

Electronic Waste: Examples: circuit boards (gold contacts, pins), chips, connectors, relays (thin gold coating, 0.05 to 5 micrometers thick). The problem is that this waste has very low gold content. Good news: CPUs, memory sticks, and gold-plated IC chips have the highest gold content in electronic waste.

Industrial Catalysts & Precious Metal Alloy Scrap: This is also a major source of gold. Example: Platinum, Palladium, and Gold coatings on anti-stick plates used in making semiconductors. Unlike electronic scrap, the gold content in industrial scrap can change a lot.

Core Technologies Needed for Gold Recycling

The main chemical methods for gold recycling are dissolving gold with aqua regia, electrolytic stripping to remove gold, and resin adsorption. The advantage of chemical recycling methods is that they achieve high purity gold, but the downside is they are expensive. The main physical methods for gold recycling are fire assay and burning resin. While these methods have lower costs, they cause more serious environmental pollution. The newest eco-friendly gold recycling technology was developed by Cornell University. It mainly uses vinyl COF material, which absorbs 99.9% of gold ions and does not produce polluting waste.