tory burch handbags Converter steel material consu

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Affect the converter steel material consumption analysis and discussion of factors

1200n ~, while working to improve the oxygen pressure from 0.85MPa to 0.90 ~ 0.95MPa; late blowing blowing gas flow rate increase at the end, reduce final slag iron oxide; strict control of a pull-carbon hit rate and increase the carbon content of the end , in conjunction with non-blowing cooling measures such as the late Canadian ores, slag from the total iron content of 18% in 2004, the average dropped to about 16.8% in 2005. 2.2.3 reduce the amount of slag, the implementation of a small single-furnace slag produced steel slag in order to reduce the amount of fine material in the production approach to take, to stay in the converter slag operation to further improve the application process on the basis of efforts to improve the quality of raw material into the furnace, the use of lime and high-grade ore, the use of light-burned dolomite dolomite instead of slagging. According to the situation of raw materials and products for reasonable adjustment cases slagging material consumption, high content in hot metal production of low s s steel, hot metal desulphurization measures taken, after the hot metal desulfurization of hot metal slag must be a net expense. Also the temperature of hot metal and scrap in ensuring the quality of the premise, to further increase the amount of scrap iron to reduce the amount. So that when the reduction of lime consumption. 2.2.4 improve the blowing process, reduce the loss to eliminate or reduce spatter spray has taken the following measures: (1) a reasonable improvement of the oxygen lance nozzle parameters, to ensure effectiveness of Java lance. Oxygen lance in the converter based on the transformation of the rational use of oxygen pressure. Another use of the audio technology of slag, smelting process of monitoring and forecasting. Reduce the occurrence of large splashes. (2) the reasonable control of the converter into the volume and control the amount of slag forming materials. According to the situation furnace and lining into a phased quantitative method. (3) Improvement of Java technology, to ensure good early of slag, slagging material added in batches before and after the advance into the slag by the method, the peak of the foaming slag forward to stagger with the decarbonization of the peak moment. (4) before the arrival of the peak decarburization, temporarily reduce the intensity of oxygen, and then gently return to its normal value. (5) blowing down the end of the lance with large oxygen bottom blowing operation and use, strengthening the bath stirring, to ensure the pressure gun time,[link widoczny dla zalogowanych], to ensure that the end of steel composition and temperature uniformity while reducing slag oxidation. 3 Conclusion (1) of the steel material consumption through the analysis of the factors identified mainly controlled a large amount of slag taken away a lot of iron loss. (2) into the system through reasonable improvement, stability of the converter operation, improve the quality of blowing refining slag, while the end of the reasonable control of oxidation of molten steel,[link widoczny dla zalogowanych], which can effectively reduce the splash and slag caused by the consumption of iron. (3) reasonable use of ore types and structure of cold material, the use of mineral materials such as slag cooling effect and the price difference with the hot metal scrap, iron and steel converters can effectively reduce the material consumption, improve metal recovery rate and reduce costs. (Continued from page 47) Dong rustic poison 604,020 (4) into the furnace hot metal through the reasonable control of the composition, smelting reduction process of the amount of slag forming material, further reducing the amount of converter slag, the implementation of less slag steelmaking process,[link widoczny dla zalogowanych], can effectively reduce iron slag consumption, improve metal recovery rate. References [I] million, so elegant, Xueli Ji. Metallurgical design principles (the book). Chongqing University Press, 1992.20 ~ 43. [2] Wang Yazhen,[link widoczny dla zalogowanych], Li Chengzuo and so on. Q & A BOF. Beijing: Metallurgical Industry Press, 2003.94 ~ 113. [3] Zhang Yusi, Gao Yun Wang, Zhang Dayong. Converter metal charge calculation and practice of structural adjustment programs. Hebei Metallurgy, 2002, No. 6. [4] Yan Rujun, Meng Yu, Liu Hongbo,[link widoczny dla zalogowanych], Liu Zhenghua, Liu Jianxin. The first steel mill Jinan Iron and Steel Iron and Steel material consumption reduction practices. Shandong, metallurgy, steel making in 2003 Supplement. I ± j fall I18015012090603O00102030405060 Figure 2 low sulfur content of 4.4 on the absorption of nitrogen of molten steel pouring process of nitrogen absorption 30MnSi used in this casting ladle casting protection, but protection of the casting ladle for the initial pilot phase, there is no argon gas seal, but sets in the ladle under the extended drain outlet, sealing the difference in the drain and the long gap between the nozzle, casting process, molten steel flow along the long nozzle, to form negative pressure in the long nozzle, molten steel to promote breathing. 5 measures to reduce the absorption of nitrogen of molten steel refining process made good slag foaming, slag layer thickness of not less than 50mm, to ensure that submerged heating of steel surface area exposed to prevent the arc to reduce the arc area of steel surface by nitrogen. Refining process, to prevent the molten steel surface exposed. Low solubility of nitrogen in slag, as long as the refining process is not large mixing, as a protective layer of slag layer can effectively prevent the nitrogen gas in molten steel and white mass. In addition, the use of argon atmosphere casting. Nozzle in the drain and the long gap between the protection of argon gas to prevent the molten steel suction. References [1] Zhao Pei. Refining and electric utility hot metal pretreatment technology hand Jl. Metallurgical Industry Press t gold tp: ww w. case js World sjzz. z-base Man! plastic _
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