| 摘要 |
A method for ladle refinement of cast iron comprising the simultaneous blowing through two dipped lances of gas jets, carrying in powder-like state of mix based on lime and magnesium, in addition, preliminary deoxidation of cast iron is carried out at ladle filling with addition agent of aluminium ingots with consumption of 0.10-0.18 kg/t of cast iron with further blowing into smelt through one dipped lance of powder-like dolomitic lime with consumption of 0.16-(t·min.) of cast iron at specific consumption of oxygen 0.25-(t·min.) and nitrogen 0.040-(t·min.) at blowing through second dipped lance into smelt in nitrogen stream with consumption of 0.020-(t·min.) of powder-like mix of dispersed magnesium with dolomitic lime with consumption of 0.040-(t·min.) and 0.15-(t·min.) correspondingly, at simultaneous supply of aluminium rod with consumption of 0.40-0.80 kg/t of cast iron into smelt by wire addition system. |
