With the rapid development of the chemical product processing industry, the market's requirements for the quality and process of chemical products are constantly increasing. Due to the physical characteristics of the flake ice, the application of the flake ice in the chemical industry is constantly expanding.In the production and synthesis of azo reactive pigments and dyes, diazotization, coupling and condensation are the necessary synthesis processes for production. Since a large amount of heat is released in diazo reaction, coupling reaction and Condensation reaction, and the ideal reaction condition should be 0-5 ℃, a large amount of ice must be added in the chemical reaction process to control the temperature to ensure the quality of the product.