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Thermodynamic Behavior of Carbon in Molten Slags

机译:碳在熔渣中的热力学行为

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摘要

The solubility of carbon in the MO-B_2O_3 (MO = CaO, BaO, and NA_2O) and CaO-RO (RO = SiO_2 and Al_2O_3) slags at high temperatures was measured to understand the thermodynamic behavior of carbon in molten slags. The solubility of carbon as a function of the composition of slags shows a minimum value, indicating that carbon dissolves by different mechanisms in the acidic and basic slags, respectively. The infrared spectra measurements indicate that the B-C bond is about 1150 and 1140 cm~(-1) in the acidic region of the CaO-B_2O_3 and Na_2O-B_2O_3 slags; hence, the incorporation of carbon into the borate network is confirmed qualitatively. The dissolution of carbon and nitrogen into the slags shows a similar behavior in the B_2O_3-bearing slags, while the different behavior is shown in the CaO-SiO_2 an CaO-Al_2O_3 slags, based on the relationship between carbide capacity and nitride capacity.
机译:测量了碳在高温下在MO-B_2O_3(MO = CaO,BaO和NA_2O)和CaO-RO(RO = SiO_2和Al_2O_3)炉渣中的溶解度,以了解碳在熔渣中的热力学行为。碳作为炉渣成分的函数的溶解度显示出最小值,表明碳分别通过不同的机理溶解在酸性和碱性炉渣中。红外光谱测量表明,CaO-B_2O_3和Na_2O-B_2O_3炉渣的酸性区域中B-C键分别为1150和1140 cm〜(-1)。因此,定性地证实了碳向硼酸盐网络中的结合。根据碳化物容量和氮化物容量之间的关系,在含B_2O_3-的炉渣中碳和氮的溶解表现出相似的行为,而在CaO-SiO_2和CaO-Al_2O_3炉渣中表现出不同的行为。

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