24 PRODUCTS & SERVICES
Pump capacity increase at Swedish paper maker
O
ne of Sweden’s leading pulp and paper manufacturers has invested in Nov
Mono pumps to satisfy particularly demanding requirements at its Stockholm plant. Used in conjunction with existing Mono equipment, the paper maker ordered two Mono E-Range progressing cavity (PC) pumps. It needed to increase the capacity
to pump coating compound from a storage vessel out to a paper coating machine, and approached pump solutions provider, AxFlow, which is a distributor of Mono products in Sweden. “The coating compound involved
is extremely abrasive and highly viscous,” says AxFlow’s sales engineer in Sweden, Hans Lundkvist. “This meant that the pumps chosen had to be rugged enough to provide reliable performance and we know that Mono’s E-Range pumps would work perfectly as they are well proven in this type of application. “As the customer already had a number of vertically mounted Mono pumps installed and was very satisfied with their performance, a pair of Mono E-Range belt-driven pumps were the obvious choice when they needed to increase capacity. The fact that they could be vertically mounted was another added benefit, as floor space was limited with this particular application.” The coating clay in applications such as this are highly shear sensitive and can contain up to 75 per cent solids,
November/December 2014
including kaolin, marble, carbonates and titanium oxide. It can also dry instantly, making it essential that the pumps used can prevent moisture loss, while still providing a gentle pumping action to avoid shear damage to the coating clay during transfer. The vertically-mounted high pressure
E-Range pumps are said to offer outstanding reliability and efficiency for applications where particularly abrasive or viscous fluids are being handled. They incorporate a helical rotor turning within a resilient rubber stator, providing a smooth low shear action which ensures the integrity of the coating mix remains intact. The pumps also feature Mono’s unique Flexishaft drive system that provides a single component link between the rotary motion of the drive shaft and the eccentric motion of the helical rotor. The reduced number of moving parts in the drive train eliminates wear and makes lubrication unnecessary, eliminating the risk of contamination. The Flexishaft design extends routine maintenance intervals and carries a 10-year warranty. Mono’s PC pumps are regularly used in pulp and paper applications to handle a variety of aggressive liquids and slurries from coating compound and black liquor through to lime and waste sludges. Their positive displacement action allows for accurate volume control, while their rugged construction ensures long life, reliable operation and minimal downtime. More information from
www.axflow. com and
www.mono-pumps.com
Pulp Paper & Logistics
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