The Main Application of FGD Gypsum
After a certain process treatment, fgd gypsum can be widely used in cement and building materials industries, and has a huge market.
(1) As cement retarder
Adding 3%-5% fgd gypsum to different types of cement can improve the physical properties of the cement in a certain degree, which can increase the strength of the cement, and adjust the setting time of the cement effectively.
(2) Making gypsum blocks
Using fgd gypsum as the main raw material, it can be made into hollow or solid gypsum blocks after modification by admixtures, casting, drying or natural drying. It has the properties of light weight, good appearance, stable volume, fire prevention, heat preservation, heat insulation, sound insulation, etc. It is one of the main utilization methods of desulfurized gypsum and has a huge market
(3) Manufacturing gypsum board
With fgd gypsum and protective cardboard as the main raw materials, and adding a certain amount of fiber, starch, coagulant, foaming agent and water, after mixing, forming, solidifying, cutting, drying, trimming and other processes, it can be made into lightweight building sheets.
This is another way of using fgd gypsum in large quantities.
(4) As subgrade backfill material
Using fgd gypsum as roadbed backfill material has a minimum strength (cbr) of more than 19%, and has good durability.
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