Process method for improving quality and stability of powder products and application thereof

A process method for improving the quality and stability of powder products, comprising at least the following steps:

• S1. Preparation stage:
• preparing and arranging a mold;
• S2. Preheating a mold:
• loading the material into the mold, placing the mold into a heating equipment to preheat the mold, wherein a temperature for preheating the mold is 58-70° C.;
• S3. Filling:
• placing the material obtained from step S2 into a quantitative filling machine for quantitative filling, filling the material quantitatively according to the product weight requirement, with an accuracy of ≤±0.3 g;
• S4. Bottom vibration with a grid:
• placing the material obtained from step S3 onto a grid and then placing it in a vibrator to vibrate at a frequency of 200-500 Hz;
• S5. Cooling:
• cooling the material obtained from step S4 in a low-temperature environment;
• S6. Microwave drying:
• performing microwave drying on the material obtained from step S5, wherein the conditions of the microwave drying are as follows:
• total microwave power 25 KW:
• 15-50% duty cycle, microwave frequency:
• 500 MHz-100 GHz;
• S7. Pre-freezing:
• performing pre-freezing on the material obtained from step S6 at a temperature of −70° C. to −50° C.;
• S8. Demolding:
• demolding the material obtained from step S7;
• S9. Freezing:
• placing the material obtained from step S8 into a freeze dryer for freezing and shaping;
• S10. Sublimation drying:
• placing the material obtained from step S9 into a freeze dryer for stepwise sublimation drying;
• S11. Baking:
• baking the material obtained from step S10, wherein the baking conditions are as follows:
• temperature of 45-65° C., and time of 5-10 h;
• S12. Storage:
• storing the material obtained from step S11 in a constant temperature and humidity environment to obtain the final product.