Urea commercial uses
- As a component of fertilizer and animal feed, providing a relatively cheap
source of fixed nitrogen to promote growth.
- As a raw material for the manufacture of plastics specifically,
- As a raw material for the manufacture of various glues (urea-formaldehyde or
urea-melamine-formaldehyde). The latter is waterproof and is used for marine
- As an alternative to rock salt in the deicing of roadways and runways. It does
not promote metal corrosion to the extent that salt does.
- As an additive ingredient in cigarettes, designed to enhance flavour.
- Sometimes used as a browning agent in factory-produced pretzels.
- As an ingredient in some hair conditioners, facial cleansers, bath oils and
- It is also used as a reactant in some ready-to-use cold compresses for
first-aid use, due to the endohermic reaction it creates when mixed with water.
- Active ingredient for diesel engine exhaust treatment AdBlue and some other
- Used, along with salts, as a cloud seeding agent to expedite the condensation
of water in clouds, producing precipitation.
- The ability of urea to form clathrates (also called “loose compounds”
host-guest complexes, inclusion compounds, and adducts) was used in the past to
- As a flame-proofing agent.
- As a clean burning fuel for motor vehicles and stationary engines.
- As a NOx-reducing reactant in diesel exhaust.
Granula vs Prilled Urea
More than 90% of world production of urea is destined for use as a
nitrogen-release fertilizer. Urea has the highest nitrogen content of all solid
nitrogenous fertilizers in common use. Urea is a raw material for the
manufacture of many important chemical compounds, such as : plastics
(urea-formaldehyde resins), adhesives ( urea-melamine- formaldehyde) and
industrial feedstock ( Potassium cyanate ).
Granular Urea Specifications
Prilled Urea Specifications
UREA prill is a small diameter, spherical white solid. It is an organic amide
molecule containing 46% nitrogen in the form of amine groups. UREA is infinitely
soluble in water and is suitable for use as an agricultural and forestry
fertilizer as well as for industrial applications which require a high quality
nitrogen source. It is not a poison to mammals and birds and is a benign and
safe chemical to handle.
- UREA prill is used as a slow release fertilizer. It must be decomposed by
microorganisms before it can be assimilated by plants.
- ALWAYS exercise caution when using this chemical as fertilizer because it has
the highest nitrogen content of any solid.
Solid urea is the largest nitrogen fertilizer product which is produced in two
forms of granules and prills. Although the chemical properties of both prills
and granules remain similar, their different physical and mechanical properties
are distinguishable and make them suitable for different application either as
fertilizer or raw materials for chemical industry. The objective of this work is
to analyses physical and mechanical properties of urea granules produced in two
different plants in Malaysia using fluidized bed process and compare them with
the imported urea prills to the country; hence make a process-product
relationship for urea finishing processes. Results of size distribution of the
samples show that the most of the granules fall in the size range between 2.40
and 3.50 mm, whereas the prills size is around 1.60 mm. Strength measurement
using side crushing test also shows that the prills with the average failure
load of 3.80 N remain significantly weaker than the granules with failure load
of 10-17 N. Strength distribution of the particles also shows that a more
uniform strength distribution is observed for the prills than the granules. It
is concluded that the urea prilling process is the finishing process which
produces the weaker and the more uniform size and strength of the particles than
the fluidized-bed granulation process.