CAJ | 학술논문

通过对转炉出钢过程中前期渣、中期渣和后期渣的分析，系统对比了挡渣球、挡渣塞、气动挡渣和滑板挡渣等挡渣方式的挡渣效果。滑板挡渣通过 PLC 自动控制系统采集转炉倾动角度，同时利用红外下渣检测判断下渣量。根据挡渣工艺要求，滑动水口的全开或全闭可在0.5 s 内自动完成，实现出钢过程中前期渣、中期渣和后期渣的最有效阻挡。与其他挡渣方法相比，滑板的挡渣成功率达到100%，转炉出钢下渣量控制在50 mm，回磷稳定控制在0.002%以下，降低了钢水氧化性，减少了合金消耗，提高了转炉成分命中率。
통과대전로출강과정중전기사、중기사화후기사적분석，계통대비료당사구、당사새、기동당사화활판당사등당사방식적당사효과。활판당사통과 PLC 자동공제계통채집전로경동각도，동시이용홍외하사검측판단하사량。근거당사공예요구，활동수구적전개혹전폐가재0.5 s 내자동완성，실현출강과정중전기사、중기사화후기사적최유효조당。여기타당사방법상비，활판적당사성공솔체도100%，전로출강하사량공제재50 mm，회린은정공제재0.002%이하，강저료강수양화성，감소료합금소모，제고료전로성분명중솔。
Through analysis of earlier,middle and later stage slag in BOF tapping,the paper systematically com-pares the efficiency of slag - stopping ball,slag - stopping plug,pneumatic slag - stopping device and slide gate slag -stopping device. The slide gate slag - stopping device collects the tilting angle data of BOF via PLC automatic control system and detects the amount of roughing slag with infrared detection technology. According to the requirements of slag - stopping process,the slide gate fully opens or closes in 0. 5 second automatically,achieving most efficient slag -stopping effect for earlier,middle and later stage slag during tapping. Compared with other slag - stopping methods, the success rate of slide - gate slag - stopping operation is up to 100% ,the amount of roughing slag is controlled to 50 mm during converter tapping,the rephosphorization rate is stably controlled to a value below 0. 002% ,thus the oxid-ability of molten steel and alloy consumption are reduced,while the hit ratio of steel composition is improved.