Compaction
Compaction is the compression of fine-grained solids
in the gap between two counter-rotating smooth or profiled rollers.
The produced material ribbon, called sheet, is an intermediate product
from which the final granular product is produced by crushing and screening
processes.
This process is used for reducing dust emissions, improving the
metering characteristics of components, and avoiding segregation
problems.
Compaction is nearly always carried out without using binding
agents.
The compaction process is traditionally used for the production of fertilizers in the form of single-component fertilizers (e.g. KCl) or mixed (NPK) fertilizers.
The technology also covers many applications in the chemical
industry.
Our machines offer a wide compaction capacity range with sheet production rates in the fertilizer segment of up to 120 t/h. The granulate production capacity depends on product grain size and the machine types selected for subsequent crushing and screening. For the most common applications the product yield is between 25 and 50 %.
Presses of type 72 and larger are preferably equipped with dual planetary gear drives.
The photograph shows press model 92 for NPK compaction during final
assembly. The sheet output capacity in this case is 60 t/h.
The advanced material feed system using a feed screw for 500 mm working width enhances material deaeration and ensures controlled press operation.
The photograph shows our type-500 press for the compaction of potassium
chloride; its sheet output capacity is 120 t/h.
