Method for improving utilization efficiency of energy in converter
A converter and energy technology, which is applied to the improvement of process efficiency and the manufacture of converters, etc., can solve the problems of low energy utilization efficiency of converters, and achieve the effects of improving energy utilization efficiency, promoting precipitation, and improving dephosphorization capacity
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Embodiment 1
[0031] A kind of method of improving energy utilization efficiency in the converter of the present embodiment, experiment is carried out on 70 tons of converters, and the concrete steps of experimental process are as follows:
[0032] S1: Leave all slag after the slag splashing of the previous furnace, and the amount of slag remaining is 45kg / t steel; add metal raw materials into the converter, control the mass percentage of scrap steel to 22%, and add the mass percentage of molten iron to 78% (see Table 1 for details );
[0033] S2: During the converter blowing process, different smelting methods are adopted according to the silicon content in the molten iron. When the molten iron w[Si] ≤ 0.3%, the single slag method is used; when the molten iron is 0.3%<w[Si] ], the use of double slag smelting. In the prior art, the single slag method is usually used for smelting, but in this embodiment, the single slag method or the double slag method is used to distinguish between the sin...
Embodiment 2
[0047] A kind of method of improving energy utilization efficiency in the converter of the present embodiment is basically consistent with embodiment 1, and further, the specific steps of the experimental process are as follows:
[0048] S1: After the slag splashing of the previous furnace, the whole slag is left, and the amount of slag left is 39kg / t steel. Add metal materials into the converter, control the mass percentage of scrap steel to 25%, and add the mass percentage of molten iron to 75% (see Table 1 for details. ).
[0049] S2: During the converter blowing process, the smelting process is determined according to the silicon content in the molten iron. Since w[Si]=0.24%≤0.3% in the molten iron in this embodiment, the single slag method is used for smelting. The silicon content is shown in the table 1.
[0050] Specifically, in the smelting process of converter single slag method in this embodiment, the amount of lime added is 17.1kg / t steel, the amount of magnesium b...
Embodiment 3
[0055] A kind of method of improving energy utilization efficiency in the converter of the present embodiment is basically consistent with embodiment 1, and further, the specific steps of the experimental process are as follows:
[0056] S1: After the slag splashing of the previous furnace, the whole slag is left, and the amount of slag remaining is 53kg / t steel. Add metal material into the converter, control the mass percentage of scrap steel to 28%, and add the mass percentage of molten iron to 72% (see Table 1 for details. ).
[0057] S2: During the converter blowing process, the smelting process is determined according to the silicon content in the molten iron. Since w[Si]=0.45%>0.3% in the molten iron in this embodiment, the double slag method is used for smelting. The silicon content is shown in the table 1.
[0058] Specifically, during the smelting process of converter double slag method in this embodiment, the desiliconization and dephosphorization period: the amount...
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