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Sulzer introduces large medium-consistency pump suitable for pulp and paper industry applications

November 30, 2021  By P&PC Staff

The MCE pump being tested at Sulzer’s full-scale R&D centre in Kotka, Finland. (Photo: Sulzer)

Sulzer has announced the launch of an enormous medium-consistency pump, the MCE93-400. Sulzer has launched the MCE pump size in response to customers’ demands for bigger production rates in pulp mills.

Pumping of liquids with a high dry solids content, referred to as medium consistency (MC), is essential for the processes in the pulp and paper industry. The MCE pumps from Sulzer are designed to achieve a reliable performance level when it comes to the capacity range as well as to the temperature and pressure of the pumped medium.

In recent years, the production rates of the industry have increased remarkably. Sulzer developed the biggest MCE pump size for a customer project. The capacity of the pump reaches up to 10,000 ADMT/d (air dry metric tons per day), the flow up to 940 l/s and the head up to 180 metres. The MCE pump is designed for the common consistency range of 10 to 12 percent and a pressure rating of 25 bar.


“The new MCE93-400 medium-consistency pump size is an excellent addition to Sulzer’s MC equipment offering. It has been designed to operate very efficiently, thus saving energy, water, and chemical costs in the pulp and paper mill processes. The unique and innovative design features of the pump minimize its life cycle costs,” says Jussi Heinonen, product manager for MC equipment at Sulzer.

Sulzer’s MCE centrifugal pumps are suitable for demanding process applications to pump medium-consistency fibrous suspensions, slurries with a high dry solid content and media with a high gas content. They cover all medium-consistency applications for pulp, paper and board as well as related biomass and biofuel applications.

The MCE93-400 pumps are manufactured at Sulzer’s factory in Kotka, Finland. The first big MCE pumps have been dispatched to a major pulp manufacturer in South America.

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