The electromagnetic isotope separator EMIS-170 is constructed based on the early domestic F-3isotope separator,and the 280 t electromagnet is still used.The main parameters are as follow:Having vacuum chamber of 2520 mm×4500mm,with magnet gap of 400mm and ben- The electromagnetic isotope separator EMIS-170 is constructed based on the early domestic F-3 isotope separator, and the 280 t electromagnet is still used. The main parameters are as follows: Having a vacuum chamber of 2520 mm × 4500 mm, with a magnet gap of 400 mm and ben-