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    PRODUIT REFRACTAIRE A BASE D'OXYDE DE CHROME
    6.
    发明公开
    PRODUIT REFRACTAIRE A BASE D'OXYDE DE CHROME 有权
    FEUERFESTES PRODUKT AUF DER BASIS VON CHROMOXYD

    公开(公告)号：EP2603465A1

    公开(公告)日：2013-06-19

    申请号：EP11746657.3

    申请日：2011-07-22

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

    发明人： LINNOT, Cyril ,  MOITRIER, Lionel ,  BOUSSANT ROUX, Yves, Marcel, Léon ,  CITTI, Olivier ,  AVEDIKIAN, Richard

    IPC分类号： C03B5/43 ,  C04B35/101 ,  C04B35/105 ,  C04B35/106 ,  C04B35/12 ,  C04B35/66

    CPC分类号： C03B5/43 ,  C04B35/105 ,  C04B35/106 ,  C04B35/12 ,  C04B35/6261 ,  C04B35/6262 ,  C04B35/62665 ,  C04B2235/3201 ,  C04B2235/3208 ,  C04B2235/3217 ,  C04B2235/3232 ,  C04B2235/3241 ,  C04B2235/3244 ,  C04B2235/3418 ,  C04B2235/5409 ,  C04B2235/5427 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/72 ,  C04B2235/77 ,  C04B2235/96 ,  C04B2235/963 ,  C04B2235/9692 ,  Y10T428/2982

    摘要： The invention relates to a device selected from among a glass furnace and a channel for dispensing the glass comprising a block and/or a coating made of a sintered material obtained by sintering a particular mixture comprising a chromium oxide content, indicated as "Cr
    T ", of between 10% and 82%. The die fraction is such that 0.39.(Cr
    T )+24 M T )+52, Cr
    M denoting the chromium oxide content by weight of the die fraction in wt % on the basis of the oxides of the die, and the aggregate is such that x
    II ≥ 97%, x
    III ≥ 70%, and x
    IV ≤ x
    III - 70%, Cr
    G denoting the chromium oxide content by weight of one grain in wt % on the basis of the oxides of said grain. x
    II denotes the amount, in wt % on the basis of the aggregate, of grains having the following conditions (II): if 10% ≤ Cr
    T ≤ 30%, then Cr
    G ≤ 0.018.(Cr
    T )
    2 - 0.390.(Cr
    T )+58.8; if 30% ≤ Cr
    T ≤ 60%, then Cr
    G ≤ 1.22.( Cr
    T )+26.7; and if 60% T ≤ 82%, then Cr
    G ≤ 100. X
    III denotes the amount, in wt % on the basis of the aggregate, of grains having the following conditions (III): if 10% ≤ Cr
    T ≤ 30%, then 0.018.(Cr
    T )
    2 - 0.390.(Cr
    T )+9.10 ≤ Cr
    G ≤ 0.18.(Cr
    T )
    2 - 0.390.(Cr
    T )+25.10; if 30% T ≤ 60%, then 1.17.(Cr
    T ) - 21.5 ≤ Cr
    G ≤ 1.17. (Cr
    T ) - 5.5; and if 60% T ≤ 82%, then 1.17.(Cr
    T ) - 21.5 ≤ Cr
    G ≤ 1.67. (Cr
    T ) - 35.5. x
    IV denotes the amount, in wt % on the basis of the aggregate, of grains having the following conditions (IV): if 10% ≤ Cr
    T ≤ 30%, then 0.018.(Cr
    T )
    2 - 0.390.(Cr
    T )+9.10 > Cr
    G ; if 30% T ≤ 60%, then 1.17.(Cr
    T ) - 21.5 > Cr
    G ; and if 60% T ≤ 82%, then 1.17.(Cr
    T ) - 21.5 > Cr
    G . The invention can be used for a glass furnace.

    摘要翻译： 本发明涉及一种颗粒粉末，所述粉末具有大于0.87重量％且小于9.0重量％的具有大于100μm尺寸的颗粒的中值圆形度。 该粉末和至少80重量％的颗粒具有以氧化物计的重量％的化学组成，总计为100％：Cr 2 O 3 + Al 2 O 3 + ZrO 2 + MgO + Fe 2 O 3 + SiO 2 + TiO 2≥90％。 的Cr2O3 +氧化铝+ MgO的≧60％; 的Cr2O3≧9％; 20％的SiO 2≧≧0.5％; 和其他氧化物：＆nlE; 10％。 本发明可用于玻璃熔炉。