Global Patent Index - EP 1017646 A1

EP 1017646 A1 2000-07-12 - METHOD FOR CRUSHING AND REDUCING SLAG CONTAINING METAL OXIDE

Title (en)

METHOD FOR CRUSHING AND REDUCING SLAG CONTAINING METAL OXIDE

Title (de)

VERFAHREN ZUM ZERKLEINERN UND REDUZIEREN VON METALLOXIDHALTIGEN SCHLACKEN

Title (fr)

PROCEDE DE FRAGMENTATION ET DE REDUCTION DE SCORIES CONTENANT UN OXYDE METALLIQUE

Publication

EP 1017646 A1 (DE)

Application

EP 99927577 A

Priority

  • AT 9900167 W
  • AT 110098 A

Abstract (en)

[origin: WO9967182A1] The invention relates to a method for crushing and reducing slag containing metal oxide for producing latently hydraulic binders, clinker or cement additives. According to said method the slag containing metal oxide is introduced into a jet mill together with reducing agents, notably carbon carriers, and the jet mill (1) is operated with hot waste gases.

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

C04B 7/14; B02C 19/06

IPC 8 full level (invention and additional information)

C04B 7/14 (2006.01); C21B 3/06 (2006.01)

CPC (invention and additional information)

C21B 3/06 (2013.01); C04B 7/14 (2013.01); Y02P 40/143 (2015.11); Y02W 30/543 (2015.05)

Combination set (CPC)

C04B 7/14 + C04B 7/52

Citation (search report)

See references of WO 9967182A1

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI LU

EPO simple patent family

WO 9967182 A1 19991229; AT 406369 B 20000425; AT A110098 A 19990915; EP 1017646 A1 20000712

INPADOC legal status


2002-05-08 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20011031

2001-08-08 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010620

2000-07-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000313

2000-07-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE FR GB IT LI LU