Wet-process phosphoric acid (H3PO4) is produced by the decomposition of phosphate raw material (apatite concentrate) with sulfuric acid and by the filtration of prepared pulp. Wet-process phosphoric acid is the main raw material in the production of phosphoric and compound fertilizers, feed phosphates. Phosphoric acid is delivered as raw material to companies, which produce cleaning agents and phosphate concentrates.
Main technical characteristics:
|Wet-process phosphoric acid||Fluorine-free wet-process phosphoric acid|
|Mass fraction of phosphorus pentoxide (P2O5), %, not less than||52||52||52|
|Mass fraction of sulphate sulphur in term of sulfur oxide (SO3), %, not more than||4.5||–||–|
|Mass fraction of H2SO4, %, not more than||–||2.5||2.0|
|Mass fraction of precipitation, %, not more than||5||5||1|
|Mass fraction of arsenic (As), %, not more than||0.004||–||–|
|Mass fraction of flourine (F), %, not more than||–||not rated||0.2|
Phosphoric acid is shipped in railway tank cars made of rust-resistant or gummed steel. May be shipped in polymeric special low-capacity tank-containers 1000МСК (1000 МК) of capacity 950 dm3.
Wet-process phosphoric acid is transported by railroad or automobile transport, in compliance with dangerous goods regulations applied to this type of transport means.
Shelf life of wet-process phosphoric acid in stainless steel, gummed bags and bags lined with carbon-graphite units or acid-resistive tile (АТМ) is not limited.
- АB Lifosa