Phosphogypsum

TC BУ 113-08-418-94

Phosphogypsum – wet-process phosphoric acid production waste – is used in agriculture for chemical reclamation of light alkalized soils and solonetz soils in combination with organic fertilizers. 

Maximal single dose is 15 t/ha.

Re-treatment period earliest once in 5-6 years.

Phosphogypsum is used in cement industry as mineralizing agent while firing cement charge and as cement setting agent at cement clinker size reduction.


Specifications

 

№

Characteristics

Norm

1

Mass fraction of  gypsum (CaSО4*2Н2О), %, min

70

2

Mass fraction of  water soluble phosphates, %, max

0,3

3

Mass fraction of  water soluble  fluorides as fluor, %, max

0,25

4

Mass fraction of  water, %, max

26

*notice – Mass fraction of water upon release