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Prilling of low-density ammonium nitrate

Uhde offers its competence and experience for customers ranging from process studies up to the execution of projects on an EPC basis.

State-of-the-art technology for the production of low density ammonium nitrate (LDAN) and chemical pure ammonium nitrate (CPAN) can be provided.

Uhde has designed LDAN prilling plants operating up to a capacity of 1,200 mtpd in a single line. Today, Uhde is the leading licensor for the LDAN prilling process.

Low-density ammonium nitrate (LDAN) is used as an effective and cost-efficient mining explosive, mainly in a mixture with fuel oil (ANFO) or in emulsion-type explosives.

For the production of LDAN prills, the AN melt from the AN neutralization is concentrated, pumped to the top of the prilling tower and mixed with a prilling additive . From here the melt is sprayed (fine droplets) into the prill tower and crystallizes in a countercurrent stream of cool air.

The Uhde® LDAN prilling process is known for:

  • low air and steam consumptionby re-use of cooling air

  • the air used in the process is scrubbed to meet BAT (best available technology) emission levels

  • cost-effectiveness

  • flexibility: LDAN and CPAN can be produced in the same plant

The above processes are referenced and well proven.

Are you curious? Get in contact with us!

QNP Ltd., Australia
Vinacomin, Vietnam