Converter tapping hole outer opening brick damage repairing method

• Main Authors: LI JUNFENG, CHEN ZHIWEI, ZANG SHAOSHUANG, WEI YUAN, WANG HANTONG
• Format: Patent
• Language: Chinese; English
• Published: 05.09.2017
• Subjects: CHEMISTRY; METALLURGY; METALLURGY OF IRON; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS

The invention relates to a converter tapping hole outer opening brick damage repairing method. Remnant steel in an inner opening brick is firstly removed thoroughly; then a drill is used for removing rudimental parts of a tapping hole overall sleeve, and the sleeve is defined by a thin iron plate to be inserted into the inner opening brick to serve as positioning and supporting for constructing an outer opening brick; the inner opening brick is filled with rubing grain castable; the thin iron plate sleeve serves as a positioning center, the tapping hole outer opening brick is pushed to the side of the inner opening brick, and a gap between the outer opening brick and the thin iron plate sleeve is filled with magnesian repairing materials; after all rings of outer opening bricks are constructed, a tapping hole outer flange is installed, a converter is rocked to the zero position for standing for 150 min or longer, then molten iron is mixed in for blowing, a new tapping hole overall sleeve is installed after ta