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    POUDRE DE ZIRCONE
    4.
    发明公开
    POUDRE DE ZIRCONE 审中-公开
    ZIRKONPULVER

    公开(公告)号：EP2406202A1

    公开(公告)日：2012-01-18

    申请号：EP10710667.6

    申请日：2010-03-10

    申请人： Saint-Gobain Centre De Recherches Et D'etudes Europeen

    发明人： VILLERMAUX, Franceline ,  CHAMPION, Thibault ,  HIS, Christian

    IPC分类号： C04B35/482 ,  B22D41/32

    CPC分类号： C04B35/482 ,  B22D41/32 ,  C04B35/62665 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3225 ,  C04B2235/3244 ,  C04B2235/3418 ,  C04B2235/5409 ,  C04B2235/5427 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5472 ,  C04B2235/72 ,  C04B2235/76 ,  C04B2235/77 ,  C04B2235/95 ,  C04B2235/96 ,  C04B2235/9607 ,  C04B2235/9676 ,  Y10T137/6851

    摘要： The invention relates to powder consisting of: (a) more than 92% of zircon particles, the powder comprising: (a2) more than 60% of zircon particles having a size greater than 0 microns, at least 90 wt % of said zircon aggregate particles containing less than 50 wt % of a monoclinic phase; (a3) more than 15% of zircon particles having a size less than 50 µm; (b) 1 to 2% of silica particles having a size less than 50 microns; (c) 0.3% to 5% of particles consisting of one, two, or three oxides selected from the group consisting of CaO, MgO, and Y
    2 O
    3 , at least 55 wt % of said additional particles having a size less than 50 µm; (d) less than 1% of particles consisting of "other oxides"; the powder also being such that it comprises: more than 5% of zircon aggregate particles having a size greater than 1 mm; and 8 to 20% of zircon matrix particles having a size less than 15 µm and comprising, for more than 95% of the weight thereof, a monoclinic phase. The invention can be used in a reactor for manufacturing carbon black.

    摘要翻译： 一种粉末，包括：（a）超过92％的锆石颗粒; （b）1％至2％的尺寸小于50微米的二氧化硅颗粒; （c）含有选自CaO，MgO和Y 2 O 3的一种，两种或三种氧化物的0.3％至5％的颗粒; （d）小于1％的包含其它氧化物的颗粒; 该粉末还包括：大于5％的尺寸大于1mm的锆石骨料颗粒; 和8％至20％的尺寸小于15μm的锆石基质颗粒，并且包括其重量的95％以上的单斜晶相。