Final powder grinding double-fan system for raw material roller press and rolling method

The invention discloses a final powder grinding double-fan system for a raw material roller press. The system comprises a kiln tail high-temperature fan and a kiln tail exhaust fan. An air outlet of the kiln tail high-temperature fan is connected with an air inlet of a V-shaped powder selecting machine and an air inlet of a kiln tail bag dust collector. An air outlet of the V-shaped powder selecting machine is connected with an air inlet of a dynamic powder selecting machine. An air outlet of the dynamic powder selecting machine is connected with the air inlet of the kiln tail bag dust collector. An air outlet of the kiln tail bag dust collector is connected with an air inlet of the kiln tail exhaust fan. An air outlet of the kiln tail exhaust fan is connected with the air inlet of the V-shaped powder selecting machine and a kiln tail chimney. The invention further provides a rolling method based on the system. By the adoption of the final powder grinding double-fan system and the rolling method, a circulatin