Optimization Practice of 120 ton Converter Pig Iron Block Repair Process
Longgang Steel Plant of Shaanxi Iron & Steel Group has encountered problems of high phosphorus and high blowing rate after using pig iron block for furnace repair.In order to further scientifically and effectively repair the furnace,Longgang Steel Plant has carried out exploration of optimizing the pig iron block furnace repair process to stabilize the operation after converter furnace repair.Using the converter flame analysis system for dynamic calibration.Calculate the amount of slag in the converter smelting process,and establish a calculation plan for pig iron blocks.By calculating the amount of cast iron blocks required for each furnace repair,the precise amount of cast iron blocks is obtained.After the optimization of the pig iron block furnace repair process,the qualified rate of phosphorus pouring in the first furnace increased by 19.1%,the blowing rate decreased by 26.1%,the annual process time of the converter was saved by 4 752 minutes,and the cost of pig iron was saved by 17.7408 million yuan.
converter,raw iron blocksconverter slagrepair furnaceprocess optimization