What are the common calcination technologies of gypsum calcination equipment

Internal heating tubular cement rotary kiln: the rotary kiln is equipped with many connecting pipes, which are filled with hot steam or high temperature heat transfer oil. The raw materials are heated in the furnace, and the materials stay in the gypsum calcining equipment furnace for a long time. It belongs to ultra-low temperature calcination, and the product quality is balanced and stable.

Gypsum calcining equipment belongs to ultra-low temperature slow speed calcining method. Continuous cooking pot calcined plaster is a key technology all over the world, with stable production and manufacturing, easy practical operation, and guaranteed product quality balance. It is suitable for calcining powdered gypsum. If it is used for industrial production of gypsum, a cyclone dryer is required to remove more than 10% of the dispersed water. The frying pan can use solid, liquid and fossil fuels.

The column type straight cylindrical vessel is equipped with a steam blanket at the bottom, which makes the cyclone enter the material layer evenly from the bottom during operation. There are many heating tubes in the bed layer, and the substances in the tubes are saturated water vapor or high temperature heat transfer oil. After the gypsum particles enter the furnace, they are heated in a flowing state. At the same time, the heat amount is transmitted to the caulking gypsum in the tube in the air flow according to the wall thickness, so that it can be burned, dehydrated and dissolved.

Cyclone calcination means that the hot air directly contacts with the granular material, and the dihydrate gypsum is quickly dehydrated to form hemihydrate gypsum. This kind of method has the advantages of effective thermal application, compact machinery and equipment, simple application and high effect, and is applicable to gypsum and gypsum calcination equipment.

Direct heating cement rotary kiln: the thermal medium directly contacts with the raw materials of gypsum to make it dehydrated and become semi hydrated gypsum or anhydrite. Gypsum calcining equipment Gypsum rotates and moves forward in a small angle of view slanted cylinder. The hot material is in the same direction or opposite direction of fitness exercise. During the whole operation process, the gypsum is dewatered. Continuous feeding and feeding is continuous work, because direct firing is more efficient than external firing cement rotary kiln, and natural materials can use gas, oil and coal.