Low-grade fluorite ore separation device and method thereof

The invention provides a low-grade fluorite ore separation device and a method thereof.The low-grade fluorite ore separation device comprises a main conveying line, a first separation conveying line, a second separation conveying line, a color sorting device, an ore distribution device and the like, an image analysis device is installed on the surface of the main conveying line, and the proportion of fluorite in a preset area on the surface of the main conveying line is analyzed through the image analysis device; the ore distribution device is controlled to be in a first distribution state or a second distribution state according to the proportion of fluorite in the preset area, so that the ores with different proportions can respectively fall onto the surfaces of the separation conveying line I and the separation conveying line II; and finally, the ore raw materials on the surfaces of the first sorting conveying line and the second sorting conveying line are subjected to pneumatic sorting through a color sor