Experimental Study on Industrial Test of Hot Metal Desilicon in KR Process
WANG Xiaopu
Abstract：The hot steel which contains lower silicon is the goal in the converter process. Because of the limitation of the raw material conditions and blast furnace operation conditions, it is unstable that [Si] in hot metal in converter steelmaking. The KR industrial desiliconization were test using hot metal desulphurization equipment in the steel-making plant of Laigang. The 0.25%-0.35% range of the target [Si] is determined in the experiment. Using new type of silicon removal agent, the efficiency of desiliconization and deoxygenation are more than 70%. And the consumption of desiliconized agent of removing 0.1% [Si] is 9.85 kg/t. The main sections in the process which influences the efficiency of KR removal is the basicity of the desiliconization slag, the temperature of hot metal and the speed of feeding. By analysis, the basicity of the slag is 0.5-0.8, the temperature of the starting metal is over 1 350 ℃, and the rate of feeding is 3.5-4.5 kg/s.
Keywords：hot steeldesiliconizationlefficiency of desiliconization and deoxygenationbasicityspeed of feeding
Publication Date：2016-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：3( 45-46,49 )