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Determination of Crystallite Size and Its Effect on Sulfur Content, CO_2 Reactivity, and Specific Electrical Resistance of Coke

机译:焦炭微晶尺寸的测定及其对硫含量、CO_2反应性和比电阻的影响

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The average crystallite size (LC) is an important property of carbon materials for aluminum electrolysis. LC is a useful factor to characterize the petroleum coke (PC) calcination level and in some cases to estimate the baking level of anodes. CO_2 reactivity of coke and specific electrical resistance (SER) are two important parameters in manufacturing of anode in aluminum industries. In addition, the amount of sulfur and calcination temperature of coke is very effective factors playing an impressive role in the quality of anode. It is demonstrated that coke calcination with different sulfur levels can affect L_C, CO_2 reactivity, and specific electrical resistance (SER). Many types of coke samples calcinated in different temperatures were examined in this study. The results showed that increasing sulfur percentage will lead to rise in LC level; however, it had a reverse effect on both CO_2 and SER reactivity. All obtained results were compared and the researchers believe that the best range of L_C is between 29.5 and 33.5 A°.
机译:平均晶粒尺寸(LC)是铝电解用炭材料的重要性能。LC是表征石油焦(PC)煅烧水平的一个有用因素,在某些情况下,还可以用来估计阳极的煅烧水平。焦炭的CO_2反应性和比电阻(SER)是铝工业阳极制造中的两个重要参数。此外,焦炭的硫含量和煅烧温度是影响阳极质量的重要因素。结果表明,不同硫含量的焦炭煅烧会影响L_C、CO_2反应性和比电阻(SER)。本研究对不同温度下煅烧的多种焦炭样品进行了检测。结果表明,提高硫含量会导致LC水平升高;然而,它对CO_2和SER反应性都有相反的影响。所有获得的结果都进行了比较,研究人员认为L_C的最佳范围在29.5到33.5 A°之间。

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