Low-carbon steel for deep drawing and smelting method thereof
A smelting method and low-carbon steel technology, applied in the direction of manufacturing converters, etc., can solve the problems of long smelting cycle and high smelting cost, and achieve the effects of shortening smelting cycle, reducing smelting cost, and widening the control window of converter end point
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Embodiment 3
[0067] The embodiment of the present invention takes 3 furnaces as an example, specifically comprising the following steps:
[0068] Step 1, molten iron KR desulfurization treatment, adding desulfurized molten iron into the dephosphorization converter and decarburization converter for double smelting, the composition and temperature of the converter end point are shown in Table 1.
[0069] Stoves
[C] / %
[O] / ppm
temperature / ℃
1
0.044
550
1686
2
0.058
440
1670
3
0.048
480
1679
[0070] Table 1 Composition and temperature at end point of converter
[0071] In step 2, the molten steel is directly tapped without deoxidation, the slag is added to modify the slag during the tapping process, and the slag is used to tap the steel during the tapping process. The slag material and ladle slag thickness added in the tapping process are shown in Table 2.
[0072] Stoves
Small grains of lime / kg...
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