Silicon-calcium-magnesium-ferrous alloy used as steel-making deoxidizer
A ferroalloy and molten steel technology, applied in the field of ferroalloys, can solve the problems of insufficient deoxidation effect, low vapor pressure, waste of Ca elements, etc., and achieve the effects of excellent deoxidation capacity, low production cost, and easy production.
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Embodiment 1
[0018] Example 1 Preparation of silicon-calcium-magnesium-iron alloy used as steelmaking deoxidizer
[0019] Add 700 kg of clean steel scrap, 110 kg of magnesium metal, 800 kg of silicon-calcium alloy containing 30% calcium, and 800 kg of silicon-iron containing 75% silicon into the induction furnace for smelting. After full melting, 2380 kg of silicon-calcium-magnesium-iron alloy was obtained. After analysis, the composition of the alloy was found to be:
[0020] Si, 46.5%, Ca, 10.34%, Mg, 4.3%, Fe, 42%.
Embodiment 2
[0021] Example 2 Deoxidation experiment of high-speed rail steel
[0022] The alloy obtained in Example 1 was used for deoxidation of 900A steel. The number of experimental furnaces was 10 furnaces, and the amount of molten steel in each furnace was 100 tons. The consumption of the alloy was 80 kg / furnace. During the deoxidation process, no sparks of calcium combustion and white smoke of calcium oxide were seen on the liquid surface in the ladle. The average of 10 furnaces of T[0] in steel after deoxidation is 16.5PPm.
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