Global Patent Index - EP 2632870 A1

EP 2632870 A1 20130904 - GEOPOLYMER CEMENT OF THE CALCIUM FERRO-ALUMINOSILICATE POLYMER TYPE AND PRODUCTION PROCESS

Title (en)

GEOPOLYMER CEMENT OF THE CALCIUM FERRO-ALUMINOSILICATE POLYMER TYPE AND PRODUCTION PROCESS

Title (de)

GEOPOLYMERZEMENT AUS CALCIUM-FERRO-ALUMINOSILICATPOLYMER UND HERSTELLUNGSVERFAHREN

Title (fr)

CIMENT GÉOPOLYMÈRE DE TYPE CA-POLY(FERRO-SIALATE) ET PROCÉDÉ D'OBTENTION

Publication

EP 2632870 A1 20130904 (FR)

Application

EP 11799735 A 20111026

Priority

  • FR 1004251 A 20101029
  • FR 2011000576 W 20111026

Abstract (en)

[origin: WO2012056125A1] The invention relates to a geopolymer binder or cement of ferro-aluminosilicate [-Fe-O-Si-O-Al-O-] polymer type which, after curing, consists of a geopolymer compound in which some of the Al atoms are substituted with Fe atoms, the whole satisfying the following raw formula: (Ca,Na,K)·(FeO)x·(SiOAlO)1-x·(SiO)y in which "x" is less than or equal to 0.5 and "y" is between 0 and 25. This geopolymer binder or cement is the result of the geopolymerization of calcium geopolymer type with geological elements rich in iron oxides and in ferro-kaolinite, coming from the weathering of acid rocks such as granite and gneiss, or of basic (mafic) rocks such as basalt and gabbro. The process for manufacturing this geopolymer binder or cement consists in treating said geological elements at a temperature of 600 to 850°C. During this heat treatment, all the iron oxides [goethite FeO(OH) + magnetite Fe3O4] are transformed to hematite Fe2O3 and the ferro-kaolinite becomes ferro-metakaolin of Fe-MK-750 type and then these are made to react with a reaction mixture of calcium geopolymer type.

IPC 8 full level

C04B 12/00 (2006.01)

CPC (source: EP)

C04B 12/005 (2013.01); Y02P 40/10 (2015.11)

Citation (search report)

See references of WO 2012056125A1

Citation (examination)

  • WO 2011003918 A1 20110113 - BANAH UK LTD [GB], et al
  • KELLY CRISTIANE GOMES ET AL: "Iron Distribution in Geopolymer with Ferromagnetic Rich Precursor", MATERIALS SCIENCE FORUM, vol. 643, 1 March 2010 (2010-03-01), CH, pages 131 - 138, XP055190886, ISSN: 0255-5476, DOI: 10.4028/www.scientific.net/MSF.643.131
  • DEER W A ET AL: "Orthosilicates (passage)", 1 January 1982, ROCK-FORMING MINERALS; VOL. 1,A: ORTHOSILICATES, 2ED, LONDON : GEOLOGICAL SOCIETY, 1982, GB, PAGE(S) 746, ISBN: 0-582-46526-5, XP008177536

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2012056125 A1 20120503; AP 2013006884 A0 20130531; AU 2011322378 A1 20130613; BR 112013010390 A2 20160802; CN 103282325 A 20130904; EP 2632870 A1 20130904; FR 2966823 A1 20120504; FR 2966823 B1 20150529; MX 2013004835 A 20130902; RU 2013124516 A 20141210

DOCDB simple family (application)

FR 2011000576 W 20111026; AP 2013006884 A 20111026; AU 2011322378 A 20111026; BR 112013010390 A 20111026; CN 201180063286 A 20111026; EP 11799735 A 20111026; FR 1004251 A 20101029; MX 2013004835 A 20111026; RU 2013124516 A 20111026