Rockdefoam 8050-NPK is a very efficient defoamer which can be safely used in
production process of phosphate based fertilizers.
|pH (1:10 solution)||7 ± 0.5|
|Cloud Point||≤ 10°C|
|Solubility||Dilution with 50% water does not exhibit any gel formation.|
|Pump ability||Pump ability: Due to Non-Gelling/NonThickening behavior even at 0°C, does not pose any problem in pumping or choking of pipe lines|
NPK fertilizers was found to be very effective in suppressing foam formed during manufacture of NPK fertilizers. Generally foaming is, caused due to the following factors:
a) Decomposition of Urea with phosphoric acid
b) Presence of soot in the system.
c) Dissolution of rubber lining which gives rise to gasses
d) Plant conditions
When nitric acid is added to the phosphate rock, the digester has temperature of about 60°C and the acid strength is 60%. At the evaporation stage the temperature is 180°C.
Rockdefoam 8050-NPK has proved to be very powerful defoamer in the manufacture of complex fertilizers produced from the following important rock phosphates:
Kola Phosphate, USSR, Morocco Phosphate, Florida Phosphate, Granges
Phosphate, Sweden, Jordanian Phosphate Usually, foam is caused by carbonates in the appetites out of five different rock phosphates mentioned above. Florida phosphate and Morocco phosphate cause great foam problems. Quantities of Rockdefoam 8050-NPK used in these two varieties vary between 0.05 to 0.1% on the weight of rock, i.e. 500 grams to 1 kg of
Rockdefoam 8050-NPK for 1 ton of rock is sufficient to suppress foam. However, this quantity may change depending upon conditions during operation.
Foaming caused due to various reasons mentioned above can easily be suppressed by dosing 0.005 to 0.05% of Rockdefoam 8050-NPK on the weight of scrubber liquor/fertilizer slurry. Sometimes, higher doses are, required when foaming is very severe. Dosing of Rockdefoam 8050-NPK
can be done from overhead tank or with the help of a plunger type of pump.
Rockdefoam 8050-NPK defoamer exhibits the following outstanding characteristics inactual plant usage:
1. Lowers the surface and interfacial tension.2. Significantly lowers defoamer cost per tonof acid produced.
3. Promote more complete reaction.
4. Does not affect rubber tank and hoselining.
5. Does not discolor or clog filter cloth.
6. Improves filtration and crystallization.