Study of Chromium Oxide Activities in EAF Slags
Study of Chromium Oxide Activities in EAF Slags
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电炉渣中氧化铬活性的研究
DOI：
10.1007/s11663-015-0453-4
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发表时间：
2016-02
影响因子：
3
通讯作者：
闫柏军
中科院分区：
文献类型：
--
作者：
闫柏军
Cu-Cr熔体中铬的活度系数是通过在CO-CO2气氛中使液态铜与固态Cr2O3平衡来测定的。 Cu-Cr熔体中铬活度系数的温度依赖性可表示为： 根据上述结果，测量了一些炉渣中1873 K（1600℃）下二价和三价氧化铬的活度。炉渣在两个氧分压（分别为 6.9 × 10−4 和 1.8 × 10−6 Pa）下与 Cu-Cr 熔体进行平衡。通过 EPMA、SEM 和 XRD 研究了淬火炉渣的形貌和熔体中氧化铬的溶解度。在两种氧分压下，炉渣被固溶体 MgAl2−xCrxO4−δ 饱和。在低氧分压（1.8×10−6Pa）下，液相中Cr的含量从0.4质量％变化到1.6质量％，炉渣中总Cr含量从1.3质量％增加到10.8质量％。在高氧分压（6.9×10−4Pa）下，液相中Cr的含量降低至0.2至0.6质量%的水平。发现渣中CrO和Cr2O3的活性均随着渣中总Cr含量的增加而近似线性增加。氧分压对炉渣中Cr2O3活性影响较小，但对CrO活性影响较大。
The activity coefficients of chromium in Cu-Cr melts were determined by equilibrating liquid copper with solid Cr2O3in CO-CO2atmosphere. The temperature dependence of the activity coefficients of chromium in Cu-Cr melts could be expressed asBased on the above results, the activities of bivalent and trivalent chromium oxide in some slags at 1873 K (1600 °C) were measured. The slags were equilibrated with Cu-Cr melts under two oxygen partial pressures (= 6.9 × 10−4and 1.8 × 10−6Pa, respectively). The morphology of the quenched slags and the solubility of chromium oxide in the melts were investigated by EPMA, SEM, and XRD. Under both oxygen partial pressures, the slags were saturated by the solid solution MgAl2−xCrxO4−δ. At the low oxygen partial pressure (1.8 × 10−6Pa), the content of Cr in the liquid phase varied from 0.4 to 1.6 mass pct with the total Cr content in the slags increasing from 1.3 to 10.8 mass pct. At the high oxygen partial pressure (6.9 × 10−4Pa), the content of Cr in the liquid phase decreased to the level of 0.2 to 0.6 mass pct. Both the activities of CrO and Cr2O3in slag were found to increase approximately linearly with the increase of the total Cr content in slag. While the oxygen partial pressure had minor effect on the activity of Cr2O3in the slag, it had significant effect on the activity of CrO.
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DOI：
10.1007/s11663-008-9132-z
发表时间：
2008-03
期刊：
Metallurgical and Materials Transactions B
影响因子：
--
作者：
Hui Wang;Yiwu Xiao;K. Jiang;D. Sichen
通讯作者：
Hui Wang;Yiwu Xiao;K. Jiang;D. Sichen
DOI：
10.2355/tetsutohagane1955.80.1_13
发表时间：
1994
影响因子：
0.3
作者：
Y. Kanzaki;F. Tsukihashi;N. Sano
通讯作者：
Y. Kanzaki;F. Tsukihashi;N. Sano
DOI：
10.1007/bf02654285
发表时间：
1991-08
期刊：
Metallurgical Transactions B
影响因子：
--
作者：
T. Inouye;H. Fujiwara;M. Iwase
通讯作者：
T. Inouye;H. Fujiwara;M. Iwase
影响因子：
2.2
作者：
Kazuki Morita;K. Tsukiashi;Munekazu Kimura;N. Sano
通讯作者：
Kazuki Morita;K. Tsukiashi;Munekazu Kimura;N. Sano
DOI：
10.1016/0021-9614(82)90031-3
发表时间：
1982-02
期刊：
The Journal of Chemical Thermodynamics
影响因子：
--
作者：
L. Timberg;J. M. Toguri
通讯作者：
L. Timberg;J. M. Toguri