Improved collophanite flotation backwater short circulation system

The utility model discloses an improved collophanite flotation backwater short circulation system, and relates to the technical field of collophanite flotation. The system comprises a high-level water tank, a grinding machine, a reverse flotation device, a scavenging device, a first thickener and a water return tank which are sequentially connected in a self-flowing mode, the scavenging device is connected with a cyclone through an ore pulp pump, an overflow port of the cyclone is connected with a feeding port of the grinding machine through a self-flowing pipe, and an underflow port of the cyclone is connected with a retreatment process. An underflow port of the first thickener is connected with the tailing storage tank; a concentrate outlet of the reverse flotation device is sequentially connected with a second thickener and a water return pool in a self-flowing mode, the water return pool is connected with the high-level pool through a high-pressure pump, and an underflow opening of the second thickener is