Three-product autogenous medium cyclone for coarse coal slime separation

The utility model relates to coarse coal slime separation equipment, particularly to a three-product autogenous medium cyclone for coarse coal slime separation. The cyclone is characterized in that the length of the conic segment of a first-stage cyclone is two or four times that of the cylindrical segment of the first-stage cyclone, the cone angle Theta 1 of the conic segment is 5 to 30 degrees, and the mounting inclination angle of the conic segment is 15 to 90 degrees; and the cone angle of Theta 2 of a second-stage cyclone is 60 to 120 degrees, and the mounting inclination angle of the second-stage cyclone is 15 to 90 degrees. The coarse coal slime recycling technology is that the ore pulp of coarse coal slime of 0.1 mm to 0.2 mm is fed into a three-product aqueous medium cyclone under pressure, and then is separated to obtain fine coal slime, clean coal slime and waste coal slime which are sequentially discharged from a first-stage overflow port, a second-stage overflow port and a second-stage underflow