Definition of gypsum
Gypsum is a mineral whose main chemical component is calcium sulfate. It is mainly the sediment of ancient salt lakes or lakes.
Natural dihydrate gypsum (CaSO42H2O) is also called raw gypsum. After calcining and grinding, beta-type hemihydrate gypsum (CaSO41/2H2O) can be obtained, which is building gypsum, also known as plaster of paris and plaster.
If the calcination temperature is 190
C, model gypsum can be obtained, and its fineness and whiteness are higher than those of building gypsum.
If raw gypsum is calcined at 400~500
C or higher than 800
C, floor gypsum will be obtained. Its setting and hardening are slow, but After hardening, the strength, wear resistance and water resistance are better than ordinary building gypsum.
The origin of gypsum dryer
With the rapid development of industrial civilization in recent years, especially in the field of chemical resources, the shortage of resources has become more and more serious, so some people began to Reuse plaster.
This is where the gypsum dryer comes from.
After being introduced to the market, it was very popular in the market.
After appraisal by relevant national departments, the gypsum dryer is an environmentally friendly machine with a high level of mechanization.
The working principle of the gypsum dryer
Gypsum itself is relatively sticky. During the drying process, the wet gypsum will be transported to the feed hopper by a roller conveyor belt.
The feed hopper is directly connected to the drying drum. The wet gypsum will enter the drying drum from the feeding hopper and begin to contact the hot air flow inside the drying drum, thus starting The entire gypsum drying process.
The entire gypsum drying process can be divided into three major parts.
The first is that the wet gypsum comes into contact with the hot air flow inside the drying drum, and the temperature difference between the hot air flow and the wet gypsum is used to evaporate the water in the gypsum; the second is that the inside of the drying drum There is a lifting board on the wall. The lifting board can continuously lift the gypsum. It not only moves the gypsum, but also allows the gypsum to fully contact with the hot air flow during the process of lifting and spreading the gypsum. , so that the hot air flow and the gypsum are heated more quickly and fully; the inner wall of the third drum is equipped with a green cleaning device, which is to remove the agglomerates produced during the drying process and the gypsum adhered to the drum wall. Materials are cleaned to prevent clogging.
Uses of gypsum
1. Used in construction, this type of application is relatively wide.
Gypsum is used in many plaster walls and special repairs.
2. It is widely used in many applications.
The gypsum powder we heard in horror is one of them