The cyclone cluster is designed in reasonable structure, radial arrangement, reliable operation and easy maintenance. The double-feed ore slurry distributor is uniformed with equal distribution and equal pressure, and the slope of the underflow launder is designed according to the value of the underflow mineral concentration flow, so as to ensure no accumulation. The cyclone is installed vertically and the spacing is reserved for later maintenance and repair. The high reliable pneumatic valves adopt the independent electromagnetic valve body pneumatic control unit.