Taking into account various factors such as the characteristics of rice itself and the quality of rice to be achieved after drying, the following measures should be paid attention to when drying rice:

⒈Select the process of preheating-drying-slowing-cooling-grain discharging. The "drying-slowing" process should be determined according to the amount of rice to be dried. That is, after the rice is dried, it enters the slow-soothing section for heat preservation. After a period of time, the moisture inside the grain diffuses to the surface, reducing the moisture gradient inside the grain, and then enters secondary drying - slow drying. The commonly used ratio of slow drying to drying time is 5~8:1, which can reduce waist bursting.

⒉ Use a lower hot air temperature. In order to ensure the quality of rice after drying and reduce the waist burst rate, a lower hot air temperature must be used. If a hot air temperature of 38~40℃ is used, the increase in the waist burst rate will be less than 2%. The rice drying process The bursting of the waist in rice is not only related to the hot air temperature, but also related to the hot rheumatism content and the initial moisture of the rice.

⒊Limit the drying rate of rice. If rice is dried too fast or cooled too fast, it will easily cause waist bursting. In order to ensure the drying quality of rice, the drying speed should not be too high. Generally, it should be controlled below 1.5%, that is, the hourly precipitation rate should not be greater than 1.5. %.

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