Prilling of low-density ammonium nitrate


Uhde offers its customers many years of expertise and experience in chemical plant engineering - from the execution of process studies to the handling of projects on an EPC basis.

Our portfolio includes state-of-the-art processes for the production of ammonium nitrate solution (AN) as feedstock for all types of AN processes such as the production of low-density ammonium nitrate (LDAN) and chemically pure ammonium nitrate (CPAN).

Uhde offers plants for the production of LDAN/CPAN with a capacity of up to 1,200 mtpd and is one of the leading licensors for these processes.

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

To produce LDAN prills, the ammonium nitrate solution from ammonium nitrate neutralization is concentrated, mixed with an additive, and sprayed in a prilling tower and crystallized in a countercurrent stream of cool air. CPAN is produced similar but without additives.

The Uhde® LDAN/CPAN prilling process is characterized by:

  • high product quality according to international standards

  • patented process for reuse of process air in the product cooler (reduction of CAPEX and OPEX)

  • the emission values for ammonia and dust correspond to BAT values (BAT - best available technology)

  • cost efficiency

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

All the above mentioned processes are referenced and proven worldwide.

Have we made you curious? Please feel free to contact us!

QNP Ltd., Australia
Vinacomin, Vietnam