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    • 9. 发明申请
    • METHOD OF AND DEVICE FOR MEASURING OXYGEN ACTIVITY IN SLAG AND CONSUMABLE TYPE CRUCIBLE USED FOR SAID DEVICE
    • 用于测量SLAG中的氧活性的方法和装置以及用于装置的消耗型可溶性
    • WO1991006003A1
    • 1991-05-02
    • PCT/JP1990001324
    • 1990-10-15
    • YAMARI ELECTRONITE KABUSHIKIGAISHAIWASE, MasanoriFUJIWARA, RyujiMOCHIZUKI, Ryo
    • YAMARI ELECTRONITE KABUSHIKIGAISHA
    • G01N27/411
    • G01N27/4115G01N33/203
    • This invention relates to a method and device permitting measurement of oxygen activity in the molten pig iron slag and molten steel slag with high precision. According to the conventional method of measurement depending on the oxygen-concentration cell composed of a one-end-closed tube type solid electrolyte fixed to the tip of the probe, having a contrasting platinum electrode wound around the outer surface thereof, and located directly in the molten slag layer, positioning of the cell in the flowing slag is difficult and insufficient contact of the contrasting electrode with the slag layer is caused on account of thermal contraction of the electroyte resulting from heat of the slag, whereby errors possibly occur in measurement. Unlike the direct measurement of oxygen activity in the slag, this invention provides a method in which a specific metal whose oxygen activity equilibrates with that of the slag when brought into contact with the slag is contained in the same vessel together with the slag and oxygen activity in the specific metal is measured for indirect measurement of oxygen activity in the slag, whereby the problem resulting from insufficient contact of the solid electrolyte with the contrasting electrode can be solved and measurement of oxygen activity in the slag with high precision is ensured.
    • 本发明涉及一种可以高精度地测量生铁矿渣和钢水渣的氧活性的方法和装置。 根据常规的测量方法,这取决于固定在探头前端的单端封闭式固体电解质组成的氧浓度电池,其具有缠绕在其外表面上的对比铂电极,并直接位于 熔融渣层,电池在流动炉渣中的定位困难,并且由于炉渣热量引起的电解质的热收缩,引起对比电极与炉渣层的接触不足,从而可能在测量中发生误差。 与炉渣中氧活性的直接测量不同,本发明提供了一种方法,其中当与炉渣接触时,其活性与炉渣的活度平衡的特定金属与炉渣和氧气活性一起被包含在同一容器中 在特定的金属中测量渣中的氧活度的间接测量,由此可以解决固体电解质与对比电极接触不足所引起的问题,并且确保高精度地测定炉渣中的氧活度。