Material Preparation
Modified starch, retarder, pulp, water reducer, and water are precisely weighed and fed into a hydraulic pulper to be mixed into a raw slurry, which is then pumped into a slurry storage tank for standby use.
The foaming agent and water are added in specific proportions to a foaming agent preparation tank and mixed thoroughly; this mixture is then pumped into a foaming agent storage tank (equipped with a heating device to maintain a temperature above 35°C) for standby use.
The accelerator and gypsum powder raw materials are conveyed via lifting and transport equipment into their respective storage hoppers for standby use.
Batching
The slurry from the storage tank is pumped into the mixer using a metering pump. The foaming agent is processed through a dynamic foaming device before entering the mixer. The accelerator and gypsum powder are precisely weighed using fully automatic metering belt scales before entering the mixer. Finally, all main and auxiliary materials are blended within the mixer to produce a qualified gypsum slurry.
Process Description
The addition of all main and auxiliary materials is fully integrated into an automatic control system. This system automatically adjusts material feed rates in response to variations in production line speed, thereby meeting the requirements for large-scale, high-speed manufacturing. The top-layer paper is unwound and passes through an automatic deviation correction unit before entering the forming machine. The bottom-layer paper is unwound and passes through an automatic deviation correction unit, a scoring machine, and a vibrating platform before entering the forming machine. The gypsum slurry from the mixer is deposited onto the bottom-layer paper situated on the vibrating platform and proceeds into the forming machine. Within the forming machine, the material is extruded to form gypsum boards of the required specifications, and the process is subsequently completed on the solidification conveyor belt.
