Quick-drying process for gypsum products

Abstract

The invention discloses a quick-drying process for gypsum products. When the gypsum is poured and molded, a filter device is arranged on at least one side of the gypsum mold. Part of the water in the gypsum is squeezed out, and the gypsum is demoulded after final setting. First of all, in the molding process, it only takes a short time and consumes very little energy to remove 88.5% of the evaporated water in gypsum products, which greatly shortens the subsequent drying time and improves production efficiency. Large-scale production can be realized in a limited space. Secondly, compared with the previous products, the products produced by this process have almost the same bulk density, improved strength and surface density, and the squeezed water can be reused to save water and energy. Finally, the process and the required equipment are simple, no matter manual production or automatic production line, only a little modification is needed to realize quick-drying process production.

Description

technical field [0001] The invention relates to a production process of gypsum products, in particular to a quick-drying process of gypsum products. Background technique [0002] The production process of gypsum products is as follows: configure the slurry, pour the slurry into the mold, and dry it after molding. When pouring molding, the amount of water in the slurry is generally not less than 80% of the mass of gypsum powder required for gypsum products, while the actual amount of water required for hydration of pure gypsum is only 22.9% of the mass of gypsum, and the gypsum powder is also mixed with other fillers , The actual water demand is between 13-15%. In the drying process after forming, more than 61% of the gypsum powder mass needs to evaporate, and a large amount of water needs to be dried, resulting in high energy consumption of the drying equipment. If the natural drying method is used, the drying time will be long, and summer It takes 20 days, nearly two mont...

AI Technical Summary

Problems solved by technology

In the drying process after forming, more than 61% of the gypsum powder mass needs to evaporate, and a large amount of water needs to be dried, resulting in high energy consumption of the drying equipment. If the natural drying method is used, the drying time will be long, and summer It takes 20 days, nearly two months in winter, and the production efficiency is extremely low. In case of continuous rainy days, if the product is not dried in time, it will become moldy and deteriorate. At the same time, natural drying takes up a large area