Al-Ca matter converter slag deacidizing modifier
A converter slag and modifier technology, applied in the field of steelmaking and refining, can solve the problems of increasing the probability of white spot defects in steel, reducing the basicity of refining slag, affecting refining effect, etc., achieving high comprehensive utilization rate, reducing smelting cost, good effect
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[0013] Example 1:
[0014] Raw material preparation, prepare aluminum powder with 99% Al content, CaC 2 75% calcium carbide and 92% CaO active lime as raw materials;
[0015] Ingredients: the above-mentioned raw materials are mixed in proportions of 37% aluminum powder, 48% calcium carbide, and 15% active lime;
[0016] After mixing, the prepared raw materials are fully stirred and mixed with a mixer to become the Al-Ca converter slag reduction modifier of the present invention.
Example Embodiment
[0017] Example 2:
[0018] The ingredients are mixed, the aluminum particles with 95% Al content, CaC 2 The calcium carbide powder with a content of 89% and the lime powder with a CaO content of 92% are mixed in the proportions of 42% of aluminum particles, 35% of calcium carbide, and 23% of active lime, and are mixed evenly with a mixer.
[0019] Press block molding, put the mixture in a closed system, without adhesive, press molding under a pressure of 30-35MPa, the composite slag ball is ¢15~¢40mm-like sphere.
[0020] After the converter steel is tapped, the Al-Ca converter slag reduction modifier of the present invention is added to the molten steel surface, and the added amount is determined by calculation and experiment according to the requirements of the refining station on the oxygen potential of the ladle slag.
[0021] After a 200-ton converter, the Al-Ca converter slag reduction modifier was added at an amount of 200kg / furnace to prove that:
[0022] 1. Regardless of ...
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