B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
6/45
B22C 1/18 (2006.01) B22C 1/00 (2006.01) C04B 35/14 (2006.01) C04B 35/20 (2006.01)
Patent
CA 1216403
ABSTRACT OF THE DISCLOSURE There is disclosed a granular product suitable for use as foundry sands and obtained from asbestos tailings calcined at a temperature of from 1250 to 1450°C, said asbestos tailings having an MgO:SiO2 ratio greater than 1.0, the granules constituting the granular product being characterized by having a thermal ex- pansion at 1000°C of not more than 1.0% and a particle size of between -20 to +200 mesh (Tyler), the granules being further characterized by being made up mainly of particles of enstatite bonded by gruenerite and fayalite, and substantially unreactive to basic oxides present in the cast metal.
452820
Chevalier-Bultel Jean-Pierre
Desrosiers Luc
Lalancette Jean-Marc
Goudreau Gage Dubuc
Les Sables Olimag Inc.
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