Advantages of this product in AOD smelting stainless steel:
1. Supplement the heat energy of AOD furnace molten pool. (1) The content of carbon and silicon in AOD molten iron mother liquor is low, the temperature of molten iron entering the furnace is not high, and the self-contained heat energy of the molten pool is insufficient. During the smelting process, additional exothermic agents need to be added to supplement the heat. Other elements are seriously oxidized, which is not conducive to quality and cost. ⑵ The proportion of the use of returned materials (scrap steel) has increased year by year, which has exacerbated the heat gap. (3) Metallurgy is a major player in carbon emissions, and reducing carbon emissions is a requirement of national policies.
2. AOD oxidation period replaces ferrosilicon and coke to reduce smelting cost. Silicon and carbon are the two major sources of heat energy for stainless steel smelting in AOD furnace. Ferrosilicon balls contain high free silicon and carbon, which provide a large amount of molten pool during the smelting process. heat, but the price of ferrosilicon is high, the utilization rate of carbon heat energy is low, and the cost performance is insufficient. ⑴ The effective components of ferrosilicon balls are metal silicon, silicon carbide, etc., and their heating reaction is similar to that of ferrosilicon, and they have the characteristics of stable heating, fast heating, low oxygen consumption, and little impact on the refining cycle, and The tonnage price is only 60% of ferrosilicon. (2) Carbon is an impurity that must be removed in steelmaking. Adding coke and coal to the molten pool of the AOD furnace will increase the carbon content of the molten pool, and the oxygen consumption is large, which has a great impact on the smelting time .
3. The powder with a particle size of 10--50mm has less strength and is easy to load into high-level silos, easy to weigh, and used as needed.
