Grinding balls and production method thereof

Details Grinding balls and production method thereof Grinding balls and production method thereof

C - Chemistry, Metallurgy

04

B

C04B 35/106 (2006.01) B02C 15/00 (2006.01) B02C 17/20 (2006.01) C04B 35/119 (2006.01)

Patent

CA 2555449

The invention relates to sintered ceramic grinding balls comprising the following compounds (by wt.-%): 18 to 50 wt.- % mullite (3Al2O3.2SiO2); 9 to 25 wt.- % zirconium (ZrO2 + HfO2) stabilised by 0.5 to 3 wt.- % rare earth oxide; and 25 to 72 wt.- % alumina (Al2O3).

La présente invention se rapporte à des billes de broyage en céramique frittée comportant les composés suivants (en % massique): 18 à 50% de mullite (3Al¿2?O¿3?.2SiO¿2?) ; 9 à 25% de zircone (ZrO¿2? + HfO¿2?) stabilisée par 0,5 à 3% d'oxyde de terres rares ; 25 à 72% d'alumine (Al¿2?O¿3?).

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