METHOD FOR OPERATING STEELMAKING USING COMBUSTION CHAMBER OF ELECTRIC FURNACE AND COMBUSTION CHAMBER STRUCTURE OF ELECTRIC FURNACE

• Main Authors: LEE MINKU, KIM WONGAB, PARK YOUNG JEUNG, LEE SEOK KEUN
• Format: Patent
• Language: English; Korean
• Published: 02.10.2019
• Subjects: BLASTING; 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; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; OVENS; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; RETORTS; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; WEAPONS

The present invention relates to a steelmaking operation method using an electric furnace combustion chamber and an electric furnace combustion chamber structure comprising a step of discharging exhaust gas from the electric furnace, a step of dividing at predetermined intervals an outer wall of a combustion chamber provided in the outermost, a combustion chamber inner wall provided on an inner side surface of the combustion chamber outer wall, and an inner surface of the inner wall of the combustion chamber, and combusting the exhaust gas introduced into the electric furnace combustion chamber including a refractory wall body in which a refractory is stacked so as to have a concave shape in an outer direction of the combustion chamber for each divided division area, and a step of discharging the combusted gas from the electric furnace combustion chamber to a cooling chamber, thereby capable of preventing a refractory wall damage such as a refractory elimination and a refractory filling even when the exhaust gas of the electric furnace is subjected to a combustion operation. 본 발명은 전기로 연소실을 이용한 제강 조업 방법 및 전기로 연소실 구조에 관한 것으로, 전기로에서 배기가스를 배출하는 단계와, 최외곽에 구비되는 연소실 외벽과, 상기 연소실 외벽의 내측면에 구비되는 연소실 내벽과, 상기 연소실 내벽의 내부면을 기 설정된 간격으로 분할하고, 분할된 각 분할영역마다 연소실 외측 방향으로 오목한 형태를 갖도록 내화물이 적층 구비되는 내화물 벽체를 포함하는 전기로 연소실로 유입되는 상기 배기가스를 연소시키는 단계와, 상기 전기로 연소실에서 냉각실로 연소된 가스를 배출하는 단계를 포함함으로써, 전기로의 배기가스를 연소 작업을 수행하더라도 내화물 탈락, 내화물 배부름 등의 내화물 벽체 손상이 발생하는 것을 방지할 수 있다.