Waste Electrical and Electronic Element (WEEE) is a term to cover all the items that have been discarded without intention of re-use including spent and failed household appliance, computer, telecommunication equipment, industrial control equipment. Most WEEE contains 50% plus recyclable materials like metal, plastic and glass.

Specifically, IC chips and PCB boards from computer and cellphone contain not only precious metals and rare metals, but also non-metal like FRP containing halogenated flame retardant and epoxy resin. The recovery of precious metal from WEEE first needs to deal with the hazardous off-gas that contains dioxin and furan, which is generated from the burning of nonmetal.  

Metalcess provides two recycling process for different treatment capacity.

Option 1: Breaking and separation+ rotatory reverberatory furnace refining + anode casting + electro-refining + anode slime recovery. Nonmetal and metal are separated before smelting to avoid generation of dioxin and furan. Minimal capacity 500kg/batch. Anode product suitable for electro-refining, no anode passivation. Recovery rate of precious and rare metal is higher than 97%.

Option 2: TBRC smelting and refining + anode casting + electro-refining + anode slime treatment. Delicate designed off-gas treatment for decomposing and absorbing the generation of dioxin and furan (<0.1ng TEQ/Nm³ in the treated off-gas before discharging to air). Minimal capacity 1t/batch. Anode product suitable for electro-refining, no anode passivation. Recovery rate of precious and rare metal is higher than 99%.