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介绍了在铜冶炼时运用转炉火焰中氧化铅(PbO)和硫化铅(PbS)特征发射光谱强度比值进行过程检测(区分制矿渣阶段和制铜阶段)的一种方法。根据已知气体分子的特征发射光谱,确定了实测谱线中PbO和PbS的存在,并通过现场实验确定了制矿渣阶段的主要特征发射光谱来自PbS,而制铜阶段的主要特征发射光谱来自PbO。转炉冶炼时,PbO和PbS特征发射光谱强度的相对变化提供了铜冶炼过程的检测方法,通过利用特征发射光谱相对强度的比值可以区分炼铜过程中的两个不同阶段——制矿渣阶段(S期)与制铜阶段(B期)。在一个完整的炼铜周期中,利用光谱测量设备采集转炉火焰发射光谱,将噪声滤除后的PbO和PbS特征发射光谱用于过程检测,准确地完成了S期与B期的鉴别。理论和实验都证明基于发射光谱的铜冶炼过程检测方法是可靠的。
A method for the process detection of the characteristic emission spectral intensity ratio of lead oxide (PbO) and lead sulfide (PbS) in the converter flame during copper smelting is described (a distinction is made between the slag stage and the copper production stage). Based on the characteristic emission spectra of known gas molecules, the existence of PbO and PbS in the measured spectra was confirmed. The field emission spectra of the main characteristic emission from the PbS were confirmed by field experiments. The main characteristic emission spectra from the copper . The relative changes in the emission spectral intensities of the PbO and PbS characteristics at the converter smelter provide a measure of the copper smelting process that can be used to distinguish between two distinct stages of the copper smelting process by making use of the ratio of the relative intensities of the characteristic emission spectra - Period) and the copper stage (B). During a complete coppermaking cycle, the flame emission spectra of the converter were collected using spectroscopic measurement equipment, and the PbO and PbS emission spectra after noise filtering were used in the process detection to accurately identify S phase and B phase. Both theory and experiment prove that the detection method based on the emission spectrum of copper smelting process is reliable.