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Tengfei Building Materials
About refining slag
Release time:
2021-03-17
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Steel slag mixed with emulsion drops in the lithosphere collision, drop by slag adsorption, assimilation theta with slag buoyancy and remove slag drops, the emulsification of slag and steel drops strongly mixing, slag and steel inclusion in the lithosphere, so larger inclusions granules found in particular exposure is dramatically, due to the interface between the slag and inclusions Zhang Liyuan small interfacial tension between liquid steel and inclusion, according to introducing, slag and mixed wetting Angle between theta s - I = 15 ° ~ 20 °, the wetting Angle between liquid steel and inclusion theta m - I = 17 0 ° ~ 120 °. So the inclusion in the steel is easily absorbed by the slag droplets colliding with it.
The pre-melting type refining slag used in slag washing process (different furnace slag washing is mostly CaO-Al2O3 system, and the same furnace slag washing can be white slag or lime-fire brick slag, etc.) are all oxide melts, while most of the inclusions are also oxides, so the inclusions adsorbed by slag are easier to dissolve in the slag droplets. This melting process is called assimilation. The inclusion is assimilated by the droplet, which makes the droplet grow up and accelerates the floatation process of the droplet. It promotes the discharge of the secondary reaction products, thus making the number of inclusions in the finished steel. What is used to reduce slag washing process, emulsified slag drop surface can be used as a deoxidation reaction of new phase formation of the product core. What is the refining slag because of the free energy required to form a new phase? It is not necessary to add much, so the deoxidation reaction can be carried out under less supersaturation. At this time, the deoxidized products are easier to be assimilated by the slag drops and the attached slag drops float up together, so the number of deoxidized products remaining in the steel What is the refining slag? What is the use of significantly reduced, this is the reason for the purity of slag washing steel.
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