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.

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