Wet-type pre-selection and direct grinding dual-purpose ore feeding and slurry making device

The invention belongs to the technical field of mineral separation, and relates to a wet-type pre-separation and direct grinding dual-purpose ore feeding and slurry making device. Comprising a first buffer tank and a second buffer tank; the upper part of the first buffer tank is connected to an outlet of ore supply equipment; a lower opening of the first buffer tank is communicated with wet-type pre-selection equipment; a lower opening of the second buffer tank is communicated with a feeding opening of the ball mill; the slurry making water pipe comprises a first slurry making water pipe and a second slurry making water pipe, and water supplied by the first slurry making water pipe vertically falls into the first buffer tank; an angle of 90 degrees is formed between the water supply direction of the second slurry making water pipe and the material incoming direction of the first buffer tank; the switching plate is arranged above the first buffer box in a detachable manner; when the wet-type pre-selection proc