Global patent index - EP 0991787 A1

EP 0991787 A1 2000-04-12 - METHOD FOR TREATING MOLTEN LEAD WITH CALCIUM

Title (en)

METHOD FOR TREATING MOLTEN LEAD WITH CALCIUM

Title (de)

VERFAHREN ZUR BEHANDLUNG VON BLEISCHMELZEN MIT CALCIUM

Title (fr)

PROCEDE DE TRAITEMENT DU PLOMB FONDU PAR LE CALCIUM

Publication

EP 0991787 A1 (FR)

Application

EP 98932251 A

Priority

  • FR 9801304 W
  • FR 9708071 A

Abstract (en)

[origin: FR2764905A1] The invention concerns a method for treating molten lead with calcium or its alloys, which consists in introducing the calcium in the bath constantly and continuously in the form of a core welding wire comprising a filler of calcium or calcium alloy inside a sheath meltable or decomposable at a temperature less than 700 DEG C. The additive efficiency of calcium or alloy elements such as magnesium or aluminium is improved.

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

C22B 13/06

IPC 8 full level (invention and additional information)

C22B 13/06 (2006.01)

CPC (invention and additional information)

C22B 13/06 (2013.01)

Citation (search report)

See references of WO 9859082A1

Designated contracting state (EPC)

BE DE GB IT

EPO simple patent family

FR 2764905 A1 19981224; FR 2764905 B1 19990723; AU 8221198 A 19990104; EP 0991787 A1 20000412; WO 9859082 A1 19981230

INPADOC legal status

2001-07-04 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20010102

2000-04-12 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991215

2000-04-12 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): BE DE GB IT