초록

Refractory products such as foundry articles and composite metal-ceramic articles are prepared from a sepiolite (2 MgO.3SiO2.2H2O) and silicate containing aluminum titanate.

대표청구항 ▼

An article having a thermal shock coefficient R of 130 to 180 (W/cm), a heat insulation factor l0.01 to 0.03 (W/cm K), a coefficient of expansion AK of ±0.5×10-6/°C., an elasticity modulus of approximately 1.4×103 (g/mm2) and a transverse strength dB of about 4.4 (g/mm2) and a crushing strength dD o

An article having a thermal shock coefficient R of 130 to 180 (W/cm), a heat insulation factor l0.01 to 0.03 (W/cm K), a coefficient of expansion AK of ±0.5×10-6/°C., an elasticity modulus of approximately 1.4×103 (g/mm2) and a transverse strength dB of about 4.4 (g/mm2) and a crushing strength dD of about 77 (g/mm2), the article being non-wettable in respect to most NE metals and being alkali-resistant prepared from a silicate-containing aluminum titanate of raw ingredients having a grain size of below 0.6 m50 to 60 weight % Al2O3, 40 to 45 weight % TiO2, 2 to 5 weight % kaolinite and 0.1 to 1 weight % sepiolite.