A consortium tasked with developing an advanced flue-gas transfer system for an in situ salt cake recycling technology in aluminum recycling facilities, has added flue-gas transfer system hardware.
A consortium tasked with developing an advanced
flue-gas transfer system for an in situ salt cake recycling technology in
aluminum recycling facilities, has added HRS Heat Exchangers S.L.U., Lorqui
Murcia, Spain, to its ranks.
As part of Alusalt, HRS will have ownership of the
flue-gas transfer system hardware. Processing of recycled aluminum generates
byproducts such as salt cake and dross. The salt cake stream consists of
aluminum, salt and oxide residue (nonmetallic product), which is a problem that
needs addressing in a cost-effective way.
Alusalt aims to develop a system that will take
the heat and pressure of the flue gas from the rotary furnace and reuse it to
evaporate the water by using a single-stage forced-circulation evaporator. The
new process would reuse all available energy that is lost during the aluminum
recycling process and would not require additional energy for the salt-cake
The plan is for Alusalt to create a recycling
system 10 to 15 times smaller than existing technologies that will make salt
cake recycling more accessible, cost effective and safer for the environment. A
new technology would reduce current recycling salt-cake operating costs by more
than 75 percent, lifting cost-prohibitive barriers for new entrepreneurs to
enter the market, HRS says.
Recycling Salt Cake Efficiently, Economically
June 27, 2012