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Title:
METHOD FOR REDUCING THE CORROSIVITY OF COOLING OR PROCESS WATER
Document Type and Number:
WIPO Patent Application WO2003106074
Kind Code:
A3
Abstract:
The invention relates to a method for reducing the corrosivity of cooling or process water, during which the pH value is lowered by introducing acids. The inventive method is characterized in that at least one water-soluble salt having a buffering effect is metered to the cooling water or process water. This preferably ensues either proportionally with regard to quantity or according to the measured value of a characteristic control value. The method can be applied to continuous flow systems or to circulation systems and, in particular, can be used in continuous casting installations utilized in the steel industry.

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Inventors:
HATER WOLFGANG (DE)
KIEDROWICZ ULRICH (DE)
GRELEWITZ GERD (DE)
Application Number:
PCT/EP2003/006041
Publication Date:
September 10, 2004
Filing Date:
June 10, 2003
Export Citation:
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Assignee:
HENKEL KGAA (DE)
HATER WOLFGANG (DE)
KIEDROWICZ ULRICH (DE)
GRELEWITZ GERD (DE)
International Classes:
C23C22/34; C23C22/56; C23C22/68; (IPC1-7): B22D11/124; C23F15/00
Domestic Patent References:
WO1981000579A11981-03-05
Foreign References:
DE10064412A12002-06-27
US6024892A2000-02-15
DE19512918A11995-10-12
Other References:
PATENT ABSTRACTS OF JAPAN vol. 0110, no. 13 (C - 397) 14 January 1987 (1987-01-14)
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