At Melting Bar, we use a meticulous multi-step process to ensure the highest purity and recovery of precious metals like gold, silver, and platinum. Here's how it works:
The process begins with melting down the incoming jewelry or scrap material. Each metal has a unique melting point—gold melts at nearly 2,000°F, silver at around 1,800°F, and platinum at a much higher 3,200°F. Once molten, the metal is rapidly cooled in an ice-water bath, breaking it into small particles that are easier to process.
Next, we dissolve the metal in a specialized acid mixture, transforming it from solid form into a liquid solution. Through a series of controlled chemical reactions—including neutralization with urea and the introduction of sulfur dioxide—pure gold precipitates out as a dense, yellow sludge. This material is then thoroughly cleaned with sulfuric acid and deionized water, leaving behind ultra-fine gold powder.
That powder is then melted again at over 2,200°F and cast into solid gold bars with approximately 99% purity. But we don’t stop there—our process continues by recovering silver, copper, and trace metals from the remaining solution. Ammonia is used to extract silver, while a coagulant separates out copper. What remains at the end is a harmless saltwater solution—evidence of a clean, efficient, and complete refining cycle.
