Calcium slagging way: usually low lance operation. Due to the large decarbonization rate, slag FeO content decreases rapidly, slag ingredients into multiple domains earlier calcium aluminosilicate Deoxidants, lime blocks around C2S easy to generate a dense skin layer, the slag in the longer back dry stage. When blowing until late slow carbon oxidation, slag FeO content began to rise Hebei calcium aluminosilicate compound deoxidizer, slag composition out of the multiphase region, and finally reach the end of component C. Advantages: Chemical reaction more stable, less splash, less erosion of the lining; Disadvantages: Early to phosphorus, sulfur poor results, slag easy to return to dry, prone to bottom up. Shortened process: the recovered scrap recycling (or other alternative material), by crushing, after sorting and processing, directly into the preheated furnace, the furnace use energy as a heat source for smelting, and then the secondary refining, get Qualified steel, long process with subsequent process steps. Since this process simple calcium aluminosilicate Deoxidants Liaoning, Shandong energy efficient calcium aluminosilicate Deoxidants, less production processes, the production cycle is short, so call this process for the steel production shortened process.