Production of feed phosphate
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Feed phosphate
can be supplemented pig and chicken feed to ensure optimal growth of
animals.
Process description
Monocalcium
phosphate (MCP), Ca(H2PO4)·H2O
is
widely used as phosphate
source in feed in Denmark and the present data refer to this substance.
MCP
can be produced in different ways and the following data refer to production
from burnt chalk (CaO) and phosphoric acid (H3PO4), see
Ullmanns (1979). The main production processes are following: 1)
CaO
and H3PO4
is mixed in a reaction tank
and MCP is produced 2) MCP is granulated, dried and sieved 3) the coarse
fraction from sieving is returned to the granulator (eventually after a
crushing process) and the fine fraction is cooled and stored for packing.
Data collection and treatment
Industrial
production data are confidential (two European producers and Sector
Group Inorganic Feed Phosphates (CEFIF)
have been consulted)
and data on main raw material consumption have been generated
by combining stoichiometric quantities of CaO
and H3PO4
according
to the following reaction scheme: CaO
and H3PO4
= Ca(H2PO4)·H2O.
Technical scope
The process include stoichiometric
quantities of CaO
and H3PO4.
Exact quantities of energy and raw materials consumed in production process is
unknown and so is application of helping agents and eventual emissions to the
environment during production.
Representativity
The
largest environmental impacts associated with MCP production is probably CaO
production (CaCO3 + energy = CaO + CO2) and H3PO4
production
(raw
phosphate + H2SO4
= )
and estimates of of MCP's overall environmental profile is probably only
slightly underestimated in spite of the poor data background.
Validation
No validation has been performed.
Inputs and outputs
Inputs and outputs associated with feed
phosphate production (100% MCP). Data
are provided per
kg of
MCP.
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Unit |
Quantity |
|
Inputs |
Materials |
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burnt chalk (CaO) |
kg |
0.222 |
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Phosphoric acid (H3PO4)
100% solution |
kg |
0.778 |
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Outputs |
Products |
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Monocalciumphosphate (CaHPO4·H2O) |
kg |
1.0 |
| Location
in database: Material/Chemicals/Mineral
Feed, P |
References
Ullmanns Encyclopädie der technischen Chemie
(1979), 4., Auflage. Band 18. Verlag Chemie.
Administrative information
Data URL: http://www.lcafood.dk/processes/industry/feedphosphate.html
Version no.:
1.00
Author: Per
H. Nielsen, The Institute for Product Development.
Data entry:
Data have been entered in this format by Per H. Nielsen.
Data completed: February
2004.
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