Yueyang Paper orders two stock preparation systems from Andritz

GRAZ, Austria, May 20, 2008 (Press Release) - International technology Group Andritz received an order from Yueyang Paper Co., Ltd., a member of the Hunan Tiger Forest & Paper Group Co. Ltd., to supply a complete deinking line, stock preparation systems, and paper machine approach systems for a new mill in Yueyang, Hunan Province. The systems are scheduled to be operational between June and August 2009.

The Andritz technology will prepare quality stock for two new 5.3 m wide paper machines based on NBKP, LBKP, APMP, and MOW furnishes. Yueyang selected Andritz to deliver all the major components, process and control engineering, as well as erection supervision, start-up services, and service parts.

This order confirms Andritz's leading position for stock preparation equipment in China. The decisive factors for the award were Andritz's superior deinking technology and the ability to process MOW furnishes with very high energy efficiency.

Three-loop deinking line

The line will use American Sorted Office Paper (ASOP) and Local Office Waste Paper to produce a deinked pulp with quality comparable to market pulp (up to 82% ISO). Design capacity is 550 t/d. The pulp will be used for various paper grades such as environmentally friendly copy paper and premium offset printing paper.

Andritz will supply equipment for all process stages, including:

• FibreFlow® drum pulper
• Additional equipment for the pulper feeding
• HD cleaning and coarse screening
• MC fine screening
• LC cleaner plants
• LC fine screening
• Three disc filters
• Two pulp screw presses for HC-thickening
• De-ashing of press filtrate utilizing RotoWash
• Two high-temperature dispersing stages with CompaDis dispersers
• SelectaFlot flotation cells
• HC peroxide bleaching
• Post bleaching using FSA
• Gravity table and sludge screw press for sludge dewatering

Stock preparation and approach systems

Providing pulp to the two new paper machines the stock preparation and approach system basically consists of:

• Two stock preparation lines for NBKP and LBKP including seven Papillon refiners
• Thick stock screening system
• PM approach system with AhlCleaner cleaner plant, Multi-Retention dual Deculator® and ModuScreen headbox screens for stock and dilution lines
• Fiber recovery with disc filters
• FibreSolve under-machine pulpers

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