Abstract: In order to keep in compliance with the environmental protection policy of the state,meet the need of market and overcome the drawbacks in operation and application of the traditional tramp-iron separators that are cooled in different ways,a high-performance air-cooled electromagnetic tramp-iron separator is developed. As compared with the conventional self-cooled,air-cooled,oil-cooled and forced oil circulation versions,the separator developed is more adaptable to working environment and can work with low temperature rise and high attraction force without the need to use cooling medium. It proves to be a separator with a good prospect for wide application.