| abstract |
This invention relates to the field of ferrous metallurgy. The purpose of the invention is to increase the yield by reducing the flaw marriage. The production method of boiling steel includes smelting carbonaceous intermediate in a steel-smelting aggregate, pouring it into a ladle, supplying manganese oxide and aluminum-containing materials and lime, providing basicity of slag 2.0 - 3.5. After releasing the intermediate product in the amount of 25–30% of its mass during the discharge process, an additive of manganese oxide materials previously heat-treated at 900–1250 ° C with a specific consumption of 10–15 kg / min is started . m 2 with a total consumption of manganese oxide of 3-5 kg / ton of metal, and after the filing of 2/3 mass of manganese material, aluminum is introduced in an amount of 0.3-0.32 kg for every 0.1% of manganese in the finished steel. 2 tab. |