Assertion: cordierite's weight percent | /r/HasProperty | 2 o
Facets:
Source sentences:
text: The present invention is such a refractory body, and is prepared in a manner such that it contains doped cordierite having from about 47.5 to about 56 weight percent SiO 2 , from about 31 to about 40 weight percent Al 2 O 3 , from about 12 to about 19 weight percent MgO, from about 0.15 to about 1.0 weight percent CaO, from 0 to about 250 ppm Na 2 O, and from 0 to about 150 ppm K 2 O, the cordierite being prepared using synthetic raw materials, the body having a flexural strength of at least about 20,000 psi as measured using a 4 point bend test.
text: When a synthetic cordierite precursor powder and a calcia source are contacted as described hereinabove and sintered, there is formed a refractory body consisting essentially of doped cordierite having from about 47.5 to about 56 weight percent SiO 2 , from about 31 to about 40 weight percent Al 2 O 3 , from about 12 to about 19 weight percent MgO, from about 0.15 to about 1.0 weight percent CaO, from 0 to about 250 ppm Na 2 O, from 0 to about 150 ppm K 2 O, and a flexural strength of at least about 20,000 psi as measured using a 4 point bend test.
text: A particularly preferred sintered, isotropic, homogeneous, refractory body of the present invention comprises doped cordierite having from about 50.3 to about 52.2 weight percent SiO 2 , from about 34.3 to about 35.7 weight percent Al 2 O 3 , from about 13.3 to about 14.6 weight percent MgO, from about 0.4 to about 0.6 weight percent CaO, less than about 500 ppm total alkali metal oxides, less than about 100 ppm total transition metal oxides, and less than about 500 ppm total alkaline earth metal oxides other than CaO and MgO, these weights being calculated on the basis of the total weight of the body, the cordierite body being prepared using synthetic raw materials, the body having a flexural strength of at least about 20,000 psi.
text: A coprecipitated hydroxide powder prepared as in Example 5 and having a bulk composition of 14.46 weight percent MgO, 34.50 weight percent Al 2 O 3 , and 51.04 weight percent SiO 2 , is used, except that unlike the preceding Examples and Comparative Experiments, the CaO doping is performed before the precursor powder slurry is dried or calcined.
text: The present invention is such a refractory body, and is prepared in a manner such that it contains doped cordierite having from about 47.5 to about 56 weight percent SiO 2 , from about 31 to about 40 weight percent Al 2 O 3 , from about 12 to about 19 weight percent MgO, from about 0.15 to about 1.0 weight percent CaO, from 0 to about 250 ppm Na 2 O, and from 0 to about 150 ppm K 2 O, the cordierite being prepared using synthetic raw materials, the body having a flexural strength of at least about 20,000 psi as measured using a 4 point bend test.
text: When a synthetic cordierite precursor powder and a calcia source are contacted as described hereinabove and sintered, there is formed a refractory body consisting essentially of doped cordierite having from about 47.5 to about 56 weight percent SiO 2 , from about 31 to about 40 weight percent Al 2 O 3 , from about 12 to about 19 weight percent MgO, from about 0.15 to about 1.0 weight percent CaO, from 0 to about 250 ppm Na 2 O, from 0 to about 150 ppm K 2 O, and a flexural strength of at least about 20,000 psi as measured using a 4 point bend test.
text: A particularly preferred sintered, isotropic, homogeneous, refractory body of the present invention comprises doped cordierite having from about 50.3 to about 52.2 weight percent SiO 2 , from about 34.3 to about 35.7 weight percent Al 2 O 3 , from about 13.3 to about 14.6 weight percent MgO, from about 0.4 to about 0.6 weight percent CaO, less than about 500 ppm total alkali metal oxides, less than about 100 ppm total transition metal oxides, and less than about 500 ppm total alkaline earth metal oxides other than CaO and MgO, these weights being calculated on the basis of the total weight of the body, the cordierite body being prepared using synthetic raw materials, the body having a flexural strength of at least about 20,000 psi.
text: A coprecipitated hydroxide powder prepared as in Example 5 and having a bulk composition of 14.46 weight percent MgO, 34.50 weight percent Al 2 O 3 , and 51.04 weight percent SiO 2 , is used, except that unlike the preceding Examples and Comparative Experiments, the CaO doping is performed before the precursor powder slurry is dried or calcined.