Global patent index - EP 1032547 A1

EP 1032547 A1 2000-09-06 - MOLTEN METAL FILTRATION

Title (en)

MOLTEN METAL FILTRATION

Title (de)

FILTRATION SCHMELZFLÜSSIGER METALLE

Title (fr)

FILTRATION DE METAL FONDU

Publication

EP 1032547 A1 (EN)

Application

EP 98954598 A

Priority

  • GB 9803436 W
  • US 6685897 P
  • US 10234098 P

Abstract (en)

[origin: WO9928273A1] Molten metal is filtered using a filter (10, 28, 44) comprising a porous carbon foam substrate coated substantially throughout with a refractory metal or refractory compound formed by chemical vapour deposition, and having a filtration porosity of less than 90 %, and preferably at least 75 %, and a ligament solid fraction at least 0.95, using apparatus comprising a holding vessel (1, 21, 40) having an inlet (2, 41) and an outlet (3, 22, 42) for the molten metal, at least one filter housing, the or each housing containing a filter (10, 28, 44), means for holding and sealing the filter or filters (10, 28, 44) in place, and means (5, 38) for preheating the holding vessel (1, 21, 40) and the filter or filters (10, 28, 44) prior to using the apparatus for filtering molten metal.

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

C04B 41/50; B01D 39/20; C04B 41/51

IPC 8 full level (invention and additional information)

B01D 39/20 (2006.01); C04B 41/50 (2006.01); C04B 41/51 (2006.01); C04B 41/87 (2006.01); C04B 41/88 (2006.01)

CPC (invention and additional information)

C04B 41/009 (2013.01); B01D 39/2055 (2013.01); C04B 41/5053 (2013.01); C04B 41/5133 (2013.01); C04B 41/87 (2013.01); C04B 41/88 (2013.01); B01D 2239/0478 (2013.01); B01D 2239/1208 (2013.01); C04B 2111/00793 (2013.01); C04B 2111/00879 (2013.01)

Combination set (CPC)

  1. C04B 41/5053 + C04B 41/4531
  2. C04B 41/5133 + C04B 41/4531
  3. C04B 41/009 + C04B 35/52
  4. C04B 41/009 + C04B 38/00

Citation (search report)

See references of WO 9928273A1

Designated contracting state (EPC)

DE

EPO simple patent family

WO 9928273 A1 19990610; AU 1165399 A 19990616; CA 2311810 A1 19990610; EP 1032547 A1 20000906

INPADOC legal status

2003-03-12 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020907

2001-04-04 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010214

2000-09-06 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000526

2000-09-06 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE