Application method of aluminum ash

[0015] In the middle stage of converter steelmaking and blowing, aluminum ash is added into the furnace as slagging material. The main chemical composition and mass percentage of aluminum ash are shown in Table 1. The timing of adding aluminum ash and the amount of steel added per ton are shown in Table 1. The total amount of steel slag is shown in Table 1. The timing of adding aluminum ash is the time from the start of blowing to the addition of aluminum ash. The other main slagging materials added in the converter smelting process and the amount added per ton of steel are shown in Table 2.

[0016] Table 1

[0017]

[0018] Table 2

[0019]

[0020] No fluorspar was added in the converter smelting process of Examples 1-6. Aluminum ash was added in the middle of smelting. At this time, the C-O reaction in the furnace was intense, the flame at the furnace mouth was strong and powerful, and there was a harsh sound in the furnace, indicating that the slag showed signs of...