Erlenbach EVD Batch Pre-expanders

Erlenbach have a range of batch pre-expanders from small machines to run specialised materials in small quantities, to machines for block production, with a throughput in excess of 3,000 kg/hr.

All of the expanders have electronic control of the weighing systems and steam control, and this leads to a very high accuracy of the resulting bulk density, with minumum tolerance.

Benefits of the Erlenbach EVD Series

• Short resetting times for material and bulk density changes by recipe administration and selection of the raw granulate source using the display.
• Bulk density accuracy +/- 0.2g/l at a bulk density of 20g/l lead to quicker amortisation
• All-electronic control systems guarantee an optimum degree of foaming
• Steam extraction in the outlet box permits central extraction of the escaping pentane-steam mixture
• Little space required
• Variable speed control of the agitator for different starting materials
• Economical utilisation of the condensate produced for heating the heat exchanger in the fluidised bed dryer

Available Options

• Bulk density readjustment ESN 10
• Silo control for filling storage silos
• Silo control for emptying storage silos
• Hard foaming unit for bulk densities >30g/l to 150g/l
• Recycled material admixture
• Raw material container with tilting tank
• Data transfer from pre-expander to PC