Desulphurized Gypsum Production Line

Description

FGD is the industrial byproduct gypsum coming from the desulfurization treatment to the gas from burning of sulfur bearing fuel, coal. The FGD equipment is composed of hot air furnace, preheating system, calcining system, dust collecting system, modifying system, conveying system, packing system and storage system.

Application of Desulphurized Gypsum Production Line

FGD is very suitable to be used as construction gypsum raw material, and the finished product, such as gypsum board and gypsum block, has good performance.

Technology of FGD Equipment

The first step is to remove the free water in the FGD raw material (the process is also called preheating). Hot air and FGD raw material is mixed during going through hot air tube. The second step is to remove part of the crystal water in the preheated FGD gypsum.

Work Process of Desulphurized Gypsum Production Line

Features of Desulphurized Gypsum Production Line

1. As a kind of gypsum, FGD has the same principal component with natural gypsum. Their principal component is calcium sulphate dehydrate (CaSO4•2H2O).
2. As industrial byproduct, FGD has the same chemical properties with other chemical gypsum: more free water, fine particles and more impurities.
3. The impurity in FGD is inorganic, which is indissoluble mineral impurities. They have little influence on the gypsum processing and application.
4. In the process of desulfurizing, with the purpose of increasing the desulfurization, high requirement is made to the limestone, calcium oxide content and fineness. It can ensure the stability of the FGD chemical composition.
5. Among all the chemical gypsum, FGD is easy to process. What’s more, it has high purity (The content of CaSO4•2H2O in FGD is 85 to 95%).