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Paper Industry

Solutions for pulp transfer, vacuum on the paper machine and dosing of coating chemicals.

Industry-specific solutions

Paper Industry
Engineering Solutions

In paper production, moving fibrous and thick pulp, vacuum for dewatering on the paper machine and dosing of coating and dye chemicals must run continuously and stably. With centrifugal and mono pumps, vacuum pumps, blowers and dosing pumps we provide a solution at every stage of the line.

A paper machine runs continuously at high speed, so any instability in stock flow, vacuum or chemical dosing shows up directly in sheet quality or breaks. Progressive cavity pumps handle high-consistency stock, broke and coating colours with a steady flow, and vacuum pumps provide dewatering on suction boxes, couch and press rolls. Turbo blowers supply aeration for the mill’s biological effluent treatment, and dosing pumps meter retention aids, sizing agents and dyes. For a proposal, send stock consistency, flows and heads, vacuum level and air volume, and chemical dosing rates.

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Frequently asked questions

Up to what consistency can a progressive cavity pump move pulp?

Progressive cavity pumps can handle stock at considerably higher consistency than centrifugal pumps, often up to around 6–8% depending on fibre type, with a feed screw or hopper inlet for the thickest material. Fibre type, consistency and suction conditions determine pump design.

How is the vacuum system of a paper machine sized?

Each position, such as suction boxes, couch roll and press, has its own vacuum level and air flow, depending on machine speed, grade, felt and wire. Collecting these values per position allows grouping into vacuum levels and selecting pumps or blowers for each group.

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