What are the characteristics of the calcination technology of gypsum calcination equipment

For gypsum calcination equipment, it is necessary to distinguish the operation process of calciner from the calcination process of sulfur gypsum, and confirm the basic operation procedures. In the commissioning process, after adjusting the inlet and outlet temperature of the calciner, adjusting the feed rate of materials in the system and the monotony and calcination interface elements, find out the relevant conditions affecting the initial and final setting, compression resistance and bending resistance, and confirm the basic operating procedures. The collected hemihydrate gypsum is sent to the aging silo by the escort machine, and the tail gas is further purified and discharged into the atmosphere through bag type dust removal.

Gypsum calcination is mainly divided into two categories: dry method and wet method. The current development trend of gypsum calcination process is: from intermittent discharge to continuous discharge; From indirect heating to direct heating; From slow dehydration to rapid dehydration, the main calcining equipment of household gypsum includes rotary kiln, vertical frying pan, fluidized bed furnace and a small amount of imported equipment. The basic process of calcination is to make gypsum powder (grain) from coal through indirect heating and heat exchange in a container.

It is dehydrated by heat conduction to form building gypsum with hemihydrate gypsum as the main component. At present, the use of rotary kiln (gypsum rotary kiln) to process desulfurization gypsum is the choice for gypsum processing in the market. The processing method can effectively save energy, and the conversion rate of gypsum is high, which is conducive to the large-scale production of gypsum.

1. Gypsum raw materials need some fineness, which can achieve the effect of rapid heat exchange and dehydration or the effect of airflow movement;

2. High heat exchange speed and efficiency;

3. The calcination time of materials is short, which belongs to high temperature rapid calcination;

4. The product phase composition is complex and the stability is poor, the product setting time is short, and the output and quality fluctuate greatly;

5. Gypsum calcination equipment is not suitable for products with high proportion of semi aqueous phase, high production quality and long setting time; The demand for environmental protection equipment is high in the consumption process.