Aluminum & Zinc Dross Recovery: DROSRITE™
BENEFITS :
- Salt-free process
- No salt cakes
- 100% recyclable non-hazardous residues
- On site
- 98% aluminum recovery (20% higher than Rotary Salt Furnaces (RSF))
- 50% lower Opex than RSF
- Lower carbon footprint, ideally for large greenhouse gas emitters such as smelters
PyroGenesis’ DROSRITE™ system is a proven, salt-free, cost-effective, sustainable process for maximizing metal recovery from dross, a waste generated in the metallurgical industry. PyroGenesis’ patent pending process avoids costly loss of metal, while reducing a smelter’s carbon footprint and energy consumption, thus providing a high return on investment. The system has been designed to process and recover valuable metals such as aluminum, zinc and copper from dross.
In addition of direct sale of the DROSRITE™ system, PyroGenesis also offers tolling services. A tolling service arrangement is one in which a smelter provides dross to PyroGenesis to be processed for a fee either on or off site – a turnkey solution for smelters.
HOW IT WORKS :
DROSRITE™ is a batch process where hot dross is introduced into an argon-filled rotary tilting furnace, quenching any oxidation reaction. The furnace is rotated to separate out the metal phase from the non-metallic. The molten metal is removed and then returned to the holding furnace, while a controlled amount of oxygen is introduced to the furnace to heat up the non-recoverable metal remaining in the residue. Some of the residues are then discharged, but the remaining residue, along with the heat build-up from the oxidation ensures that the furnace is ready to receive the next batch.