Recently, the campaign of No. 2 converter in the steelmaking plant of Ansteel Group Panzhihua Steel and Vanadium Company exceeded 15000 heats and reached leading level in the large semi-steel smelting converter in the same industry. The converter campaign is an important indicator for reflecting the steelmaking production level and has a significant influence on improving productivity and reducing refractory material and production cost. From this year on, the plant has been focusing on technical innovation, developing the technology of “recycling utilization of hot slag of semi-steel smelting converter”, implementing new protecting measures, such as strictly control converter bricklaying quality, arrange reasonable scrap steel categories, strengthen end point smelting control and the management and control of ladle operation, improve the erosion-resistant ability of the slag splashing layer, make every effort to maintenance the pipeline, porous bricks and gas pressure etc., and finally overcome many adverse influences, such as special semi-steel smelting by means of vanadium titanomagnetite, thin shaft of No. 2 converter and difficult to protect the converter and successfully improved the campaign of semi-steel smelting converter from 13000 to 15278 heats.