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Craftsmanship
Tengfei Building Materials
What are the methods to improve the desulfurization efficiency of refining slag?
Release time:
2021-01-21
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As we all know, desulfurization of refining slag is cheap, simple equipment, and good desulfurization effect. So, it is very important to improve the desulfurization efficiency of refining slag, which can greatly save costs to achieve better results. So, what are the methods to improve the desulfurization efficiency of refining slag?
refining slag must be fine grinding;
2. Prevent molten iron from taking slag, avoid the effect of MnO and FeO in the refining slag and reduce the efficiency;
3. The injection rate should be properly controlled;
4. Due to the characteristics of heat absorption and low temperature during decomposition of the refining slag, it is necessary to maintain a high molten iron temperature;
5, to have a deep penetration depth;
6. The increase of alkalinity not only increases LS, but also increases the mass transfer coefficient of desulfurization in the refining slag within a certain range;
7. Increase the temperature to improve the diffusion coefficient of sulfur in the refining slag;
8, mixing pool increases the reaction area of molten steel and refining slag to accelerate desulfurization, increase the mixing intensity, can also be the diffusion coefficient increases, when the slag steel mixing of electric furnace, in 2 minutes, the boundary area increases about 20 times;
9. In order to accelerate the desulfurization of molten steel by refining slag, it should be carried out under the conditions of high alkalinity and good deoxygenation of slag steel, so as to ensure large desulfurization speed;
10. It should be noted that the desulfurization and deoxygenation of molten steel by refining slag are carried out simultaneously, and good desulfurization effect can be achieved only under good deoxygenation conditions
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