Wet pan mill is divided into dry type and wet type, mainly through the mixing of raw materials, rolling, crushing, rolling repeated to achieve water balance, uniform ratio, low gas content, improve the molding rate and molding quality, through the rolling material molding products, with high density, good strength, no porosity ratio weight and other characteristics. High efficiency, energy saving and high output, this product is used for the recovery of tailings in iron ore process, so as to prevent the loss of ore powder and make full use of effective resources