Global Patent Index - EP 1841712 A1

EP 1841712 A1 2007-10-10 - PYROPROCESSED AGGREGATES COMPRISING IBA AND PFA AND METHODS FOR PRODUCING SUCH AGGREGATES

Title (en)

PYROPROCESSED AGGREGATES COMPRISING IBA AND PFA AND METHODS FOR PRODUCING SUCH AGGREGATES

Title (de)

BEI HOHEN TEMPERATUREN VERARBEITETE IBA UND PFA ENTHALTENDE AGGREGATE UND HERSTELLUNGSVERFAHREN DAFÜR

Title (fr)

AGREGATS PYROTRAITES COMPRENANT DES CENDRES DE FOND D'INCINERATEUR ET DES CENDRES VOLANTES ET PROCEDES POUR PRODUIRE DE TELS AGREGATS

Publication

EP 1841712 A1 (EN)

Application

EP 06706228 A

Priority

  • EP 2006000270 W
  • GR 20050100015 A
  • US 23875805 A

Abstract (en)

[origin: WO2006074944A1] In accordance with an embodiment, a method for producing an aggregate is disclosed comprising mixing incinerator bottom ash ("IBA") from a municipal solid waste incinerator and pulverized fuel ash ("PFA") from coal combustion. The method further comprises agglomerating the mixture, such as by pelletizing, and pyroprocessing the agglomerates, such as by sintering or vitrification, to form the aggregate. The addition of PFA to IBA has been found to facilitate production of lightweight and normal weight aggregates. Preferably, the IBA or the mixture of IBA and PFA is wet milled prior to agglomerating. A preferred proportion of IBA to PFA is 40%/60%. The agglomerates may be coated with an inorganic material to create a surface layer on the aggregate, Organic material may be included in the mixture to increase the porosity of the aggregate. A plastic binder, such as clay, may be added to the mixture, as well. A lightweight sintered aggregate comprising IBA and PFA and an aggregate comprising IBA and PFA are also disclosed.

IPC 8 full level (invention and additional information)

C04B 33/13 (2006.01); C04B 18/02 (2006.01)

CPC (invention and additional information)

C04B 35/628 (2013.01); C04B 18/023 (2013.01); C04B 33/1352 (2013.01); C04B 33/1355 (2013.01); C04B 33/32 (2013.01); C04B 35/6261 (2013.01); C04B 35/62625 (2013.01); C04B 35/62695 (2013.01); C04B 2235/5427 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/5463 (2013.01); C04B 2235/6021 (2013.01); C04B 2235/656 (2013.01); C04B 2235/72 (2013.01); C04B 2235/726 (2013.01); C04B 2235/727 (2013.01); C04B 2235/77 (2013.01); C04B 2235/96 (2013.01); Y02P 40/69 (2015.11); Y02W 30/92 (2015.05)

Combination set (CPC)

C04B 18/023 + C04B 18/08 + C04B 18/10 + C04B 20/026

Citation (search report)

See references of WO 2006074944A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

EPO simple patent family

WO 2006074944 A1 20060720; EP 1841712 A1 20071010

INPADOC legal status


2014-01-15 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20130801

2010-03-31 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20100226

2008-04-23 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) DELETED

2007-10-10 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20070806

2007-10-10 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR