Characteristics of silicon aluminum iron silicon aluminum iron:

1. The use of silicon aluminum ferroalloy deoxidation through practical application, proved that the effect is good, and the use of aluminum deoxygenation, not only the aluminum yield is high, the amount of residual aluminum is easy to control, the form of inclusions has also changed;

2. After the use of silicon aluminum alloy, the element recovery rate is high, mainly because the proportion of alloy increases, the proportion of aluminum is 2.7g/cm3, the specific gravity of silicon aluminum iron is 3.5-4.2g/cm3, and the proportion of steelmaking final slag is generally 2.8-3.2g/cm3, so the alloy will sink below the slag surface after joining, effectively controlling the oxygen reaction between aluminum and air and slag;

3. The deoxidation effect is good, and it is generally believed that a complex deoxidation product is generated, and the activity of the oxide is reduced, which is conducive to the deoxidation reaction;

4. Easy to generate low melting point, phase makes inclusions easy to polymerize, promote floating removal. When deoxidizing with ferrosiliconite, the total aluminum content in the steel, the former is higher than the latter, and the acid-soluble aluminum of the latter is higher than the former, which indicates that when ferrosilicon is used, the aluminum oxide inclusion is reduced.

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