Complete gypsum production line with calcining plant in gypsum manufacturing plant

With the development and progress of the gypsum industry, the demand for gypsum powder continues to increase. At the same time, the production process of gypsum powder is also improving day by day. The key process in the production of gypsum powder is dehydration, which is also the most difficult link. In response to this situation, we have designed a new type of dehydration equipment that meets the requirements of various gypsum powder products - a gypsum powder production and calcining production line (hot oil calcining furnace).

The factory's production uses a variety of processes. First, the gypsum ore is crushed, transported and stored in the raw material bin, and then the crushed gypsum ore is ground into powder of required fineness by Raymond grinding, and then the gypsum powder is transported to the calcining section through a metering feeding device to obtain the calcined , the calcined gypsum is modified by the pulverizer and cooled by the cooling device. Finally, the finished gypsum is transported and stored.

Natural gypsum powder production process flow:
Preliminary crushing of gypsum ore: jaw crusher or hammer crusher is usually used for crushing
Grinding of gypsum ore: The initially crushed gypsum ore is sent to the mill for further fine grinding to obtain gypsum powder of the required fineness.
Calcining of gypsum ore: The finely ground gypsum ore is sent to the decomposition furnace for high-temperature calcination. During the calcination process, the crystal water in the gypsum ore is released to form gypsum clinker.
Gypsum clinker cooling: The calcined gypsum clinker is quickly cooled through the cooling device to avoid secondary calcination.
Gypsum powder undergoes strict quality testing and quality control, and qualified gypsum powder will be packaged or put into use for different construction and industrial applications.

Material consumption parameters

 Gypsum product parameters

1. Fineness: ≥100 mesh;

2. Bending strength (directly related to raw materials): ≥1.8Mpa; Compressive strength: ≥3.0Mpa;

3. Main ingredients: semi-hydrated matter: ≥80% (adjustable); gypsum <5% (adjustable); soluble anhydrous matter <5% (adjustable).

4. Initial setting time: 3-8min (adjustable); Final setting time: 6~15min (adjustable)

5.Concentration: 65%~75% (adjustable)

Features of our natural gypsum plant

1. Equipped with a feeding stabilization system to achieve stable feeding, stable feeding and heating of the fluidized bed combustion boiler. The feeding stabilization system consists of a feeding stabilizing bin and a conveying device (measuring screw or belt scale).

2. The calcining system adopts the hot air boiling furnace calcining process to evenly calcine the gypsum raw materials.

3. Add a cooling device to cool the gypsum before entering the silo to prevent the gypsum from deteriorating due to excessive temperature.

4. Silo turnover system: The quality of materials in different periods is different, so the quality of the products made is different. The silo turning system can evenly mix new and old materials so that the products have the same quality. In addition, the system prevents overheating deterioration caused by heat generated by powder accumulation.

5. The dust removal system uses a bag dust collector to ensure that the dust generated during pre-drying, transportation, grinding, calcination, and aging is purified and then discharged to meet the requirements of the working environment.

6. Use a distributed control system to centrally control distributed equipment.