The main reason affecting the eutectic of the refractories is the chemical composition of the slag; even if there is no influence of slag (the slag influence degree is 0), the eutectic mixture is still high, mainly due to the high iron content, resulting in the Dicalcium ferrite. Higher content. The reduction of the pressure in the electric arc furnace and the hydrostatic pressure of molten iron is an environmental influence factor in the steelmaking process. It is well-known that CaO reacts with Fe2O3 to form a eutectic mixture of dicalcium ferrite, which plays an important role in the sintering of the product.
Particle size grading is another factor that influences the sintering process, but the CaO content has almost no effect on the sintered surface activity. Ceramic fiber blankets have been observed for samples with different CaO content after sintering at 1200°C, when the particle size is 2～ At 4 mm, no liquid phase can be generated on the surface even at 1400°C.
In this case, as the surface diffuses, the surface activity mainly affects the formation of the liquid phase. Also when the material cools, different results are obtained. The residual particles of the ceramic binding test sample were measured to be "loose", which means that no liquid phase was formed as a ceramic binder.
The two main factors that can affect the performance of the refractories are: a suitable particle size grading; adjustment of the C/S ratio, or even the combination of the two methods. The C/S ratio is a very important factor, and it turns out that not only the CaO content can change the final liquid phase amount, but also the ratio of CaO to SiO2 affects it.
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