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15/02/2007
Donaldson Filter Components Ltd
7 The Parks
Newton le Willows, WA12 0JQ, England
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Jenny Nash
+44 (0) 1942 711711
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FOR IMMEDIATE RELEASE
DONALDSON MEMBRANES EXPERTISE ENSURES PRESTIGIOUS CONTRACT RENEWAL WITH HEIDELBERG CEMENT
Donaldson Membranes Tetratex ePTFE filter media supplied to the Heidelberg Cement plant at Lixhe in Belgium has proven to be such a success that the contract for replacement of media for the kiln filterbags has again been awarded to Donaldson Membranes, through its partner TTL France, a filterbag manufacturer and service provider.
Mark Rigby, Director of Donaldson Membranes said: "We are delighted to have won this contract again. The excellent results and performance achieved by our filter media originally supplied at Lixhe have enabled us to renew this prestigious contract against severe competition. We look forward to working with Heidelberg Cement in its ongoing projects to increase production and meet environmental requirements."
Heidelberg Cement, a world leader in the production of cement, concrete and building materials, asked Donaldson Membranes for a filtration solution during modernisation works which involved shutting down the wet process kiln at its Lixhe plant and carrying out an overhaul of the dry process production line.
Previously, kiln exhaust gases and part of the cooler exhaust gases which were used to dry raw materials, were de-dusted by an electrostatic precipitator. This electrofilter was inadequate to handle the increased gas flow and was unable to meet the regulatory dust emission requirements.
Two new fabric filters, manufactured by Redecam, were installed and the filter bag media selected was Donaldson Membranes Tetratex # 6255 woven glass fabric.
The fabric filters house 7680 filter bags, each 4500mm long x 145mm diameter, giving a filter surface area of 15,730 m2. Gas flow is a nominal 650,000 Nm3/hr and operating temperature is 110oc allowing for peaks up to 260oc. Before the overhaul the dry process production line had a capacity of 3400 tons of clinker per day. Today the kiln is generally operating at a capacity of between 4400 and 4600 tons per day.
Bernard Boulange, Project Director at Heidelberg Cement, has commented:" Our choice of bag filter technology was based on the excellent performance of the bag filter installed at our Antoing kiln which produced low emissions, no sensitivity to CO peaks or modifications to process conditions. In short, the new bag filter is a success and has provided a dramatic reduction in dust emissions and lifetime guarantees of the filter bags have been maintained."
-ends-
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Niland PR Ltd.
Tel/Fax: 44 (0) 1772 768706
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For further information contact
Donaldson Membranes
7 The Parks
Newton Le Willows
WA12 0JQ
England
Tel: +44 (0) 1942 711711
Fax: +44 (0) 1942 711571
E-mail: membranes-europe@mail.donaldson.com
Website: www.donaldson.com and click on Membranes
Note to Editors
About Donaldson Membranes
Donaldson Membranes is a leading worldwide brand name and are the manufacturer
of Tetratex® expanded polytetrafluoroethylene (PTFE) membrane. High performance
laminates offer superior dust cake release, low-pressure drop, higher airflow, and high efficiency, making Tetratex® an excellent choice for filtration and other applications.
For over 20 years Donaldson Membranes has been solving challenging problems in a variety of markets including: industrial filtration; pharmaceutical; microfiltration; fuel cell, medical; fine chemicals; food and plastics, and more.
For customers requiring a high performance membrane to solve a problem, Donaldson Membranes has the answer: Tetratex®.
About Donaldson Company, Inc.
Donaldson Company, Inc., headquartered in Minneapolis, Minn., is a leading worldwide provider of filtration systems and replacement parts. Donaldson is a technology-driven company committed to satisfying customer needs for filtration solutions through innovative research and development. Donaldson serves customers in the diesel engine and industrial including in-plant air cleaning, compressed air and gas purification, power generation, disk drive filtration, off-road equipment and trucks. Our 11,000 employees contribute to the company's success at over 30 manufacturing locations around the world. In fiscal year 2005, Donaldson reported sales of more than $1.6 billion and grew earnings for the 16th consecutive year. Donaldson is a member of the S&P MidCap 400 Index and Donaldson shares are traded on the NYSE under the symbol DCI. Additional company information is available at www.donaldson.com
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