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For Phosphor Gypsum  

Description :

Phosphogypsum refers to the gypsum formed as a by-product of the production of fertilizer from phosphate rock. It is mainly composed of gypsum (CaSO4·2H2O).

After the phosphogypsum is treated with our production line, it can be used as construction gypsum and agricultural gypsum.


Technology of phosphogypsum treatment:  Two-step treatment.  The first step is to remove the free water in the phosphogypsum raw material(the process is also called preheating).  Hot air and phosphogypsum raw material is mixed during going through hot air tube.  The second step is to remove part of the crystal water in the preheated   phosphogypsum.


The phosphorus gypsum production line is composed of  hot air furnace,  preheating  system, calcining system, dust collecting system, modifying system, conveying system, packing system and storage system.


Working process of the production line


The basic process of making gypsum powder is:  phosphogypsum raw material —— preheating —— calcining —— dust collecting —— pin mill modifying —— silo—— packing machine


Phosphorous gypsum production line capacity


capacity/year

   capacity/hour

raw material consumption

   calcinor size

30,000 tons/year

4.2 tons/hour

45,000 tons/year

4.5 x 1.2 x 1.4 m

50,000 tons/year

6.9 tons/hour

75,000 tons/year

4.5 x 1.4 x 1.6 m

60,000 tons/year

8.3 tons/hour

90,000 tons/year

4.5 x 1.6 x 1.8 m

100,000 tons/year

13.88 tons/hour

150,000 tons/year

4.5 x 2.0 x 2.2 m

150,000 tons/year

20.83 tons/hour

225,000 tons/year

4.5 x 2.2 x 2.4 m

200,000 tons/year

27.77 tons/hour

300,000 tons/year

4.5 x 2.4 x 2.6 m

Features of the phosphorus gypsum production line


*Two-step technology in the phosphorus gypsum production line has the following advantages:

*Both the preheating system and the calcining system use the same energy source: hot air furnace.  This makes the production line more energy-saving, and less investment cost.

*The pin mill or ball mill is arranged after calcining. It modifies the gypsum, and makes the gypsum have stable performance.

*Horizontal dust collecting system improves the filtering result.

*Hot air is recycled. More energy is saved and the production cost is lower.

*DCS control system is adopted in the production line. It supplies more automatic control level, much stabler running performance, and makes the final product have more reliable quality.


Installation of the production line and training to the operators


Engineers and technicians from our company will be dispatched to the installation site to instruct the installation and commissioning work. The buyer shall supply welding workers and fitters to cooperate in the work of installation and commissioning.  During the installation and commissioning, the buyer’s operators will be trained in respects of operating, trouble shooting and operation by the technicians and engineers.




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