Magnesium alloy for steelmaking and steelmaking deoxidization method
A magnesium alloy and alloy block technology, which is applied in the field of magnesium alloy for steelmaking and steelmaking deoxidation, can solve the problems of increased steelmaking cost, low utilization rate, molten steel pollution, etc., to improve the quality of molten steel, improve the quality of molten steel, and strengthen the The effect of desulfurization ability
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example 1
[0022] In this example, the composition of the magnesium alloy for steelmaking is calculated by weight percentage: 23% Al, 18% Mg, and the rest is Fe and impurities with a content not exceeding 0.5%.
[0023] Break the magnesium alloy into alloy blocks with a particle size of about 70-90 mm. During the tapping process of the above molten steel, add 5 kg / tFe alloy blocks into the ladle after 30 seconds of tapping to deoxidize the molten steel and remove inclusions. Make modifications.
[0024] After testing, after the deoxidation treatment in this example, the oxygen content in molten steel is 200ppm, and the desulfurization rate is 24%.
example 2
[0026] In this example, the composition of the magnesium alloy for steelmaking is calculated by weight percentage: 18% Al, 23% Mg, and the rest is Fe and impurities with a content not exceeding 0.6%.
[0027] The magnesium alloy is crushed into particles with a particle size of about 3-4mm, and cored wire is made into cored wire through core wrapping operation. After tapping, 4.6kg / tFe cored wire is added to molten steel through a wire feeding machine. The molten steel is deoxidized and the inclusions are modified.
[0028] After testing, after the deoxidation treatment in this example, the oxygen content in molten steel is 190ppm, and the desulfurization rate is 29%.
example 3
[0030] In this example, the composition of the magnesium alloy for steelmaking is calculated by weight percentage: 19% Al, 21% Mg, and the rest is Fe and impurities with a content not exceeding 0.8%.
[0031] Break the magnesium alloy into alloy blocks with a particle size of about 70-90 mm. During the tapping process of the above molten steel, add 4 kg / tFe alloy blocks into the ladle after 30 seconds of tapping to deoxidize the molten steel and remove inclusions. Make modifications.
[0032] After testing, after the deoxidation treatment in this example, the oxygen content in molten steel is 210ppm, and the desulfurization rate is 31%.
[0033] The advantages of the magnesium alloy for steelmaking and the deoxidation method of the present invention include: the ability to deoxidize molten steel while having a strong desulfurization capability, for example, after deoxidation, the oxygen content can be reduced to 200ppm, and the desulfurization rate can reach more than 20%; Ca...
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