It is mainly aimed at evaporation, concentration, crystallization, drying and other processes during the production of lithium battery raw materials, including nickel sulfate, cobalt sulfate, manganese sulfate, lithium carbonate, lithium hydroxide and other lithium battery raw materials production, with advantages of energy saving, stability, less lithium loss, uniform crystal particles and so on. In particular, it has a unique technology in the concentration and extraction process of lithium carbonate, with high yield and good quality.