Slag adhesion preventing fluorine-free slag modifier for ladle refining, preparation method and using method
A technology of ladle refining and slag adjusting agent, applied in the field of steelmaking, can solve the problems of aggravating the erosion of refractory materials of ladle and refining equipment, affecting the service life of ladle and refining equipment, reducing the service life of refractory materials of refining equipment, etc. Use time, beneficial to desulfurization, and the effect of improving life
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Embodiment 1
[0026] The present invention will be further elaborated below in conjunction with the examples. The examples are only used to illustrate the present invention, but not to limit the present invention in any way.
[0027] (1) Preparation of slag conditioner
[0028] The raw materials used in the embodiment are as follows, and the following percentages are all weight percentages:
[0029] The chemical composition of active lime is: 100%>CaO≥90.0, 5%≥MgO>0, 2.5%≥SiO 2 >0, the rest are Al 2 o 3 and other trace impurities;
[0030]Chemical composition of bauxite: 100%>Al 2 O 3 ≥90.0, 5%≥CaO>0, 3%≥MgO>0, 1.5%≥SiO 2 >0, the rest are trace impurities;
[0031] Chemical composition of boron anhydride: 98.0%>B 2 O 3 ≥85.0, 5%≥CaO>0, 3%≥MgO>0, 3%≥SiO 2 >0, the rest are trace impurities;
[0032] Chemical composition of magnesia: 100%>MgO≥90.0, 5%≥CaO>0, 3%≥Al 2 O 3 >0,1%≥SiO 2 >0, the rest are trace impurities;
[0033] Take the above-mentioned raw materials and weigh them...
Embodiment 2
[0046] (1) Preparation of slag conditioner
[0047] The raw materials used in the embodiment are as follows, and the following percentages are all weight percentages:
[0048] The chemical composition of active lime is: 100%>CaO≥90.0, 5%≥MgO>0, 2.5%≥SiO 2 >0, the rest are Al 2 O 3 and other trace impurities;
[0049] Chemical composition of bauxite: 100%>Al 2 O 3 ≥90.0, 5%≥CaO>0, 3%≥MgO>0, 1.5%≥SiO 2 >0, the rest are trace impurities;
[0050] Chemical composition of boron anhydride: 98.0%>B 2 O 3 ≥85.0, 5%≥CaO>0, 3%≥MgO>0, 3%≥SiO 2 >0, the rest are trace impurities;
[0051] Chemical composition of magnesia: 100%>MgO≥90.0, 5%≥CaO>0, 3%≥Al 2 O 3 >0,1%≥SiO 2 >0, the rest are trace impurities;
[0052] Take the above-mentioned raw materials and weigh them after baking at 150~300℃, and carry out the ingredients according to the five formulas in Table 3:
[0053] Table 3 Formula of slag conditioner for CAS-OB ladle refining (mass percentage)
[0054] Raw m...
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