Global patent index - EP 1035932 A1

EP 1035932 A1 2000-09-20 - METHOD AND APPARATUS FOR MELTING NON-FERROUS METALS, ESPECIALLY MAGNESIUM

Title (en)

METHOD AND APPARATUS FOR MELTING NON-FERROUS METALS, ESPECIALLY MAGNESIUM

Title (de)

VERFAHREN UND VORRICHTUNG ZUM SCHMELZEN VON NICHT-EISENLEGIERUNGEN, INSBESONDERE MAGNESIUM

Title (fr)

PROCEDE ET APPAREIL DE FUSION DE METAUX NON FERREUX, SPECIALEMENT LE MAGNESIUM

Publication

EP 1035932 A1 (EN)

Application

EP 97911268 A

Priority

FI 9700676 W

Abstract (en)

[origin: WO9924194A1] The invention relates to a method and apparatus for melting of non-ferrous metals, especially magnesium. The metal material is charged into a furnace chamber (1) and flows through openings (6; 7) in the intermediate furnace chamber walls (4; 5) via a main melting chamber (2) to an outlet chamber (3), from where it is pumped using a pneumatic pump chamber (9) through its upwards slanting pipe (11) to a separate dosing chamber or dosing furnace (14) and further through a bottom valve (17) to the casting device. The invention aims at improving the dosing accuracy in an economical way. This has been accomplished by pumping the melt through said outlet pipe (11) to said dosing chamber or dosing furnace (14) in such a way that excessive metal flows back to said pump chamber (11) through the same pipe while the correct amount of metal, using a clock-controlled valve (17), flows to the casting device.

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

B22D 39/06; C22B 26/22

IPC 8 full level (invention and additional information)

B22D 39/02 (2006.01); F27B 3/19 (2006.01); F27D 3/14 (2006.01); F27D 3/00 (2006.01); F27D 19/00 (2006.01)

CPC (invention and additional information)

F27D 3/14 (2013.01); B22D 39/02 (2013.01); F27B 3/19 (2013.01); F27D 19/00 (2013.01); F27D 2003/0056 (2013.01)

Citation (search report)

See references of WO 9924194A1

Designated contracting state (EPC)

DE GB SE

EPO simple patent family

WO 9924194 A1 19990520; AU 4870497 A 19990531; EP 1035932 A1 20000920

INPADOC legal status

2002-09-25 [18R] REFUSED

- Ref Legal Event Code: 18R

- Effective date: 20020425

2001-11-14 [RTI1] TITLE (CORRECTION)

- Ref Legal Event Code: RTI1

- Free Format Text: METHOD FOR MELTING NON-FERROUS METALS, ESPECIALLY MAGNESIUM

2001-04-18 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010301

2000-09-20 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000606

2000-09-20 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE GB SE