Lump ore pretreatment system based on rotary kiln

A lump ore pretreatment system based on a rotary kiln comprises a lump ore raw material conveying device (1), the rotary kiln (2), a dried material conveying device (3) and a screening device (4). Wherein a discharging port of the lump ore raw material conveying device (1) is connected to a feeding port (201) located at the kiln tail of the rotary kiln (2), and a discharging port (202) located at the kiln head of the rotary kiln (2) is connected to a feeding port (401) at the upstream of the screening device (4) through the dried material conveying device (3); the rotary kiln (2) is provided with a rotary kiln heat medium inlet (203) and a rotary kiln heat medium outlet (204). The system is simple, practical and reliable, the moisture removal effect of the lump ore is good, the powder removal rate is high, the lump ore charging problem is solved, the charging proportion and the air permeability level of the blast furnace lump ore are improved, the production cost of the blast furnace is effectively reduced, a