Title:
METHOD FOR PRODUCING A BODY MADE FROM A GRANULAR MIXTURE
Document Type and Number:
WIPO Patent Application WO/2011/010045
Kind Code:
A3
Abstract:
The invention relates to a method for producing a body including: preparing a granular mixture including: a) at least 90 wt % of mineral oxide grains; b) 0.3 to 3 wt % of resin polycondensed with formaldehyde and/or the derivatives thereof, the percentage being calculated in terms of dry resin extract; c) 0.001 to 1 wt % of a hardening agent, the percentage being calculated in terms of dry hardener extract; d) 0.005 to 0.35 wt % of a formaldehyde scavenger compound; and e) 0.2 to 3 wt % of water; contacting said granular mixture with a surface of a forming tool; and insufflating a gas flow at 50 to 380 degrees into the granular mixture for 1 to 300 seconds in order to at least partially harden said mixture, the formaldehyde scavenger being carbohydrazide.
Inventors:
SARRAZIN STEPHANE (FR)
VARGAS MANUEL (FR)
VARGAS MANUEL (FR)
Application Number:
PCT/FR2010/051457
Publication Date:
March 31, 2011
Filing Date:
July 09, 2010
Export Citation:
Assignee:
HUETTENES ALBERTUS FRANCE (FR)
SARRAZIN STEPHANE (FR)
VARGAS MANUEL (FR)
SARRAZIN STEPHANE (FR)
VARGAS MANUEL (FR)
International Classes:
B22C1/22
Foreign References:
| US4942217A | 1990-07-17 | |||
| US5795934A | 1998-08-18 |
Other References:
RALF-JOACHIM GERLACH, MINELCO GMBH, ESSEN, GERMANY: "AWB - the binder system for a clean foundry", USEPA MEETING ON INNOVATIVE BINDERS FOR THE IRON AND STEEL FOUNDRIES OCTOBER 26, 2005, 26 October 2005 (2005-10-26), XP002441666
TRINOWSKI DOUGLAS M., HA INTERNATIONAL, WESTMONT, IL: "Environmental Improvements to UCB Binders & the CORDIS Process", USEPA MEETING ON INNOVATIVE BINDERS FOR THE IRON AND STEEL FOUNDRIES, 26 October 2005 (2005-10-26), XP002586795
TRINOWSKI DOUGLAS M., HA INTERNATIONAL, WESTMONT, IL: "Environmental Improvements to UCB Binders & the CORDIS Process", USEPA MEETING ON INNOVATIVE BINDERS FOR THE IRON AND STEEL FOUNDRIES, 26 October 2005 (2005-10-26), XP002586795
Attorney, Agent or Firm:
SALOU, Clarisse (BP 23, 14 avenue de la Grande Armée Paris Cedex 17, FR)
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