I don't know of any reclamation yards...but if workers remodeling an apt had a decent French bathtub to dispose of they might sell it to one of the vendors at the flea market on Dorrega in Palermo (Subte linea D to Ministro Carranza then about eight blocks on Dorrega toward Av Cordova). You will probably find benches there along with lots of furniture and lamps, etc. Open Tues-Sunday starting around noon. Happy hunting!
