Gypsum is an industrial material and building material with a wide range of uses. It can be used in cement retarders, gypsum building products, model making, medical food additives, sulfuric acid production, paper fillers, paint fillers, etc. The microporous structure and heat dehydration of gypsum and its products make it have excellent sound insulation, heat insulation and fire resistance. Most of the commonly used gypsum in the industry is plaster of paris. Gypsum mills are used to process plaster of paris. So what is the process of making gypsum powder?
The production process of gypsum can be summarized as the three major processes of gypsum stone crushing, calcination and grinding. First, the gypsum stone ore is crushed to about 30 mm using a jaw crusher and an impact crusher, and then transported to the mill for fine grinding. The gypsum powder with the required fineness of the product after grinding is sent to the rotary kiln for calcination by the powder concentrator. If the gypsum powder does not meet the requirements, it will be returned to the mill for fine grinding to meet the product size and then calcination.
In order to stabilize the production and calcination of construction gypsum, gypsum stones of different grades are pre-homogenized in a homogenization field. Then the raw gypsum is evenly fed into the jaw crusher through the feeder, and crushed into a particle size of 10-25mm, and then finely crushed by the impact crusher. There are bucket elevators, silos, and feeders into the rotary kiln for dehydration. Grind again.
gypsum powder process machine
Gypsum Powder Process Machine
The quality of the building gypsum powder processed by the production line of beneficiation, crushing, grinding and calcination is good. Due to the low temperature heat source, the gypsum is not easy to overfire. As long as the discharge temperature is controlled properly, the finished product does not contain dihydrate gypsum, and anhydrous gypsum is only Within 5%, the rest are hemihydrate gypsum. This kind of composition is ideal, and the physical properties are also very stable. It has been successfully put into production in the construction industry such as the production of gypsum board in major regions.
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