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Yara implements RHEWUM technology

Published by , Assistant Editor
World Fertilizer,

Calcium ammonium nitrate (CAN) is a popular nitrogen fertilizer in agriculture for plant nutrition. Due to the difficult screening characteristics of CAN, Yara has implemented RHEWUM technology to expand its capacity.

When increasing the capacity, our customer duplicated the existing screening line. In addition to the increase of capacity, this also results in increased availability. The new screens were modernised and modified together with the customer along with his accumulated experience and are thereby optimally adapted to the plant, which achieves a flow rate of up to 350 tph. The construction of the plant will be realised in two stages. In the first stage, RHEWUM DF course screens with downstream RHEWUM RIUS are used (screen cut 5.0 mm). RHEWUM WA fine screens (screen cut 3.2 mm) remove the fine dust in the second stage.

Several special features of the machines were taken into account during the implementation of the project. Due to the abrasive and corrosive properties of calcium ammonium nitrate, appropriate material and wear protection were used for the complete plant during production. In order to be able to dose the screened product fractions flexibly, adjustable butterfly valves were installed in the directly WA screening machines. In addition, integrated level switches enable automatic monitoring and control of the plant.

By supplying the screening line as a complete package, which was adapted to the individual customer and the local conditions, Yara Rostock was able to implement its project with full success.

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