MOLTEN METAL VESSEL HAVING POROUS REFRACTORY PART AND MANUFACTURE THEREOF

• Main Authors: TERAJIMA HIDETOSHI, GOTO KIYOSHI, HIRAI NAOKI
• Format: Patent
• Language: English
• Published: 17.10.2000
• Edition: 7
• Subjects: BLASTING; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHEMISTRY; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; FURNACES; HEATING; KILNS; LIGHTING; MANUFACTURE OF IRON OR STEEL; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; OVENS; PERFORMING OPERATIONS; POWDER METALLURGY; RETORTS; TRANSPORTING; WEAPONS

PROBLEM TO BE SOLVED: To provide a molten metal vessel having a porous refractory part and its manufacturing method. SOLUTION: In the molten metal vessel composed of monolithic refractory 3, permanent brick 3 and an iron shell 1, in oder from the inside, the porous refractory part 4 having 20-80 vol.% porosity is lined at least in a part of the monolithic refractory 3. In the manufacturing method of the molten metal vessel, the permanent brick 2 is constructed in the inside of the iron shell 1, and successively, after inserting a core, the monolithic refractory 3 is poured, and after curing, the core is removed and firing is executed. In such a case, the core having projecting parts is inserted on the outer periphery of the core and the recessed parts of the monolithic refractory 3 developed with the projecting parts after curing and removing the core, is fired after filling the porous refractory. In this way, the damage of the integrally formed monolithic refractory 3 is restrained and the service life of the molten metal vessel is extended and smelting cost can be reduced.