Method and device for producing crystal anhydrous lithium chloride

The present invention provides a preparing method of crystallizing lithium chloride, including following steps, mixing lithium chloride purifying solution and separating mother solution, continuously pump circulation evaporating crystallization, continuous centrifugation and drying after thickening, a cooling packing step. The crystallizing lithium chloride preparing method of the invention is continuous of each steps, lithium chloride crystal mush thickening and continuous centrifugation lithium chloride mother solution are mixed with lithium chloride purifying solution, then entering pump circulation evaporating crystallization to crystallize, energy consumption per unit product of the product device is 20% lower than gap production device, the product recovery rate of lithium chloride increases 2%.