Anyone who has used wave soldering to assemble PCBs knows about that chunky layer of metal that collects on the smooth surface of the molten solder. This is solder dross; it is composed of oxidized metals and impurities that collect as the molten solder contacts the air and manufacturing environment. This happens regardless of alloy and is a normal part of the process, often consuming up to 50% of the bar solder added to the solder pot. In the past, this dross was collected as waste and disposed of, but solder dross is more than 90% valuable metal. This value should be recovered.
Nowadays, typically, this dross is collected and returned to a metals supplier for recycling. JKTECH now offers welding slag recovery reducers Solder Dross Recovery . The first option involves sending the slag back, which is converted to bar solder (within the original spec) and returned, All you need is a tin reduction machine, When dross arrives, regardless of which program is chosen, it is electrolytically refined and the pure metals are recovered and converted back into usable bar solder. Often, this reclaimed/recycled metal has a better purity than virgin metal.
Contact me if you want to discuss this.
Post time: Jun-07-2023