Global patent index - EP 0879651 A3

EP 0879651 A3 2000-08-16 - Method and assembly for preventing sticking of fine-graded, moist material in the handling equipment of such material

Title (en)

Method and assembly for preventing sticking of fine-graded, moist material in the handling equipment of such material

Title (de)

Verfahren und Anordnung zum Verhindern des Festklebens feinkörniges, feuchtes Material in der Handhabungseinrichtung für solches Material

Title (fr)

Procédé et ensemble pour prévenir le collage d'un matériau fin, humide dans l'équipement de manutention d'un tel matériau

Publication

EP 0879651 A3 (EN)

Application

EP 98660043 A

Priority

FI 972132 A

Abstract (en)

[origin: EP0879651A2] The present invention relates to a method and assembly for preventing sticking of fine-graded, moist material such as clay or sludge to screens, shovels and other units of earth handling equipment. The handling of moist and fine-graded materials is often greatly hampered by sticking of such materials to the handling equipment. Pure clay in particular sticks extremely tenaciously on all surfaces and, having a soft and easily deformable consistency, tends to adhere to a surface rather than to allow itself to be detached from the surface under an external force. This leads to plugging of screening and blending equipment and accumulation of clay on shovels and other equipment used for handling the clay. Most sludges also act in a similar manner. The invention is based on heating at least a portion of the equipment elements to be in contact with the material being treated to a temperature higher than the boiling point of water.

IPC 1-7 (main, further and additional classification)

B08B 17/00

IPC 8 full level (invention and additional information)

B07B 1/56 (2006.01); B08B 17/02 (2006.01)

CPC (invention and additional information)

B08B 17/02 (2013.01); B07B 1/56 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0879651 A2 19981125; EP 0879651 A3 20000816; FI 972132 A0 19970519; FI 972132 A 19981120

INPADOC legal status

2002-01-02 [18D] DEEMED TO BE WITHDRAWN

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- Effective date: 20010217

2001-05-02 [AKX] PAYMENT OF DESIGNATION FEES

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2000-08-16 [AK] DESIGNATED CONTRACTING STATES:

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- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-08-16 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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1998-11-25 [AK] DESIGNATED CONTRACTING STATES:

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- Designated State(s): BE DE DK FR GB NL SE

1998-11-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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