REFRACTORY AND REFRACTORY STRUCTURE

• Main Authors: IWAMOTO KENTARO, KAMIO HIDETOSHI
• Format: Patent
• Language: English
• Published: 18.09.2014
• Subjects: ARTIFICIAL STONE; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; REFRACTORIES; SLAG; TRANSPORTING; TREATMENT OF NATURAL STONE

PROBLEM TO BE SOLVED: To provide a refractory having excellent thermal shock resistance, and a refractory structure using the refractory.SOLUTION: In a refractory, as chemical components after heat treatment in a nonoxidizing atmosphere at 500°C, comprising free carbon by 2.0 to 7.0 mass%, and also, as the free carbon, comprising linking carbon linking a refractory structure, the apparent porosity is 4 to 12% and also, the total volume of open pores with a size of 10 to 100 μm is controlled to 20 to 50 vol.% at a ratio in which the total volume of the open pores with a size of 200 μm or lower is defined as 100.