The invention discloses a metallurgy lime powder utilization system and a technology method. The system and the technology method are mainly designed for effective recycling of lime powder in the metallurgy process. The metallurgy lime powder utilization system comprises a vibrating sieve, a lime powder ball press and a lime powder conveying unit, wherein the vibrating sieve is arranged on a lime raw material supply section and used for screening lime powder with the grain size smaller than 5 mm; the lime powder ball press is used for performing ball pressing on lime powder, and the lime powder conveying unit is used for communicating the vibrating sieve and the lime powder ball press. The lime powder conveying unit conveys the lime powder screened out by the vibrating sieve to the lime powder ball press, the lime powder ball press carries out ball pressing on the lime powder so that lime balls with the grain size being 20-40 mm and the special gravity being 1.9-2.2 t/m<3> can be obtained, and the lime balls are returned for steel making. The lime powder for metallurgy and with the grain size smaller than 50 mm is separated, recycled and used. Meanwhile, negative effects of the lime powder in the steel making and producing process are also avoided.