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氧化钴是硬质合金生产重要原料之一,其中铁、锰、镍、钙、钠杂质对硬质合金性能影响很大,尤其是钙、钠更为显著。前人对氧化钴中杂质元素的分析曾做过不少工作:光谱分析一般采用压丸法;钙和钠的测定,通常采用火焰光度法或原子吸收光谱法。苏修援建我厂时,采用分光镜测定钙和钠,费用大,速度慢,后改用光谱分析:由两个方法来完成。但分析误差大,所用的红特硬型感光板难以解决。
Cobalt oxide is one of the important raw materials for the production of cemented carbide. Among them, iron, manganese, nickel, calcium and sodium impurities have a great influence on the properties of cemented carbide, especially calcium and sodium. In the past, the analysis of impurity elements in cobalt oxide has done a lot of work: Spectral analysis commonly used pellet method; calcium and sodium determination, usually by flame photometry or atomic absorption spectrometry. Su repair aid to build our plant, the use of spectroscopic determination of calcium and sodium, the cost of slow, then switch to spectral analysis: by two methods to complete. However, the analysis error is large, the red hard type used in the photosensitive plate is difficult to solve.