2.a process for recovering iron chl

2.a process for recovering iron chlorides from a gas stream having a temperature above 980 comprising passing said gas stream through an externally cooled first flue to reduce the temperature of the gas stream to 675-900,collecting liquid ferrous chloride from said first flue and then colling the residue of the gas stream in a second externally coolled flue while contacting said gas stream with chlorine to oxidize residual to chloride in the gas stream and adding sodium chloride ro form a sodium chloride-ferric chloride complex.