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    • 2. 发明公开
    • PROCESS FOR PRODUCING COKE, COKE, AND METHOD FOR EVALUATING HOMOGENEITY OF COAL BLEND
    • VERFAHREN ZUR HERSTELLUNG VON KOKS,KOKS UND VERFAHREN ZUR BEURTEILUNG DERHOMOGENITÄTEINER KOHLEMISCHUNG
    • EP3147341A4
    • 2017-05-03
    • EP15796775
    • 2015-05-15
    • JFE STEEL CORP
    • DOHI YUSUKEMAETA YOSHIKOHANADA KAZUTOSHIFUKADA KIYOSHIMATSUI TAKASHIHONMA MICHIOSHINOHARA MASAHIRO
    • C10B57/00C10B41/02C10B57/04C10B57/10G01N33/22
    • C10B57/04C10B41/02C10B53/04C10B57/10G01N33/222
    • An object is to provide coke having a high strength and excellent extrusion capability from a coke oven and a method for manufacturing the coke. In addition, provided is a method for quantitatively evaluating homogeneity of a coal blend. Using a mixing apparatus having a capability of controlling a degree of mixing to be 0.85 or more at 60 seconds after the start of a mixing and stirring operation when stirring and mixing a coal blend makes it possible to disintegrate pseudo-particles in the coal blend in order to homogenize the coal blend. Therefore, it is possible to manufacture coke excellent in terms of coke strength and extrusion capability. The degree of mixing is defined by equation (1): degree of mixing = ÃC 0 ˆ’ ÃC / ÃC 0 ˆ’ ÃCf Here, the degree of mixing is a value calculated from the standard deviation of characteristic values respectively determined for the samples taken from the stirred and mixed coal blend. ÃC 0 denotes the standard deviation of a characteristic value when mixing is not entirely performed, ÃCf denotes the standard deviation of characteristic values when mixing has been completely performed, and ÃC denotes the standard deviation of respective characteristic values of the samples taken.
    • 其目的在于提供焦炉具有高强度和优异的挤出能力的焦炭及其制造方法。 此外,提供了一种用于定量评估混煤均匀性的方法。 当搅拌和混合煤混合物时,在搅拌和搅拌操作开始后的60秒时,使用具有控制混合程度的能力为0.85或更高的混合装置,可以破碎煤混合物中的假颗粒 为了使煤混合物均匀化。 因此,可以制造焦炭强度和挤出性能优异的焦炭。 混合程度由等式(1)定义:混合程度= C 0'C / C 0'Cf这里,混合程度是根据分别针对所采样品确定的特征值的标准偏差计算的值 来自搅拌和混合煤混合物。 ○0表示未完全混合时的特征值的标准偏差,○Cf表示完全混合时的特征值的标准偏差,○○表示所取样品的各特征值的标准偏差。
    • 3. 发明公开
    • COAL MIXTURE, METHOD FOR PRODUCING COAL MIXTURE, AND METHOD FOR PRODUCING COKE
    • KOHLENMISCHUNG,VERFAHREN ZUR HERSTELLUNG EINER KOHLENMISCHUNG UND VERFAHREN ZUR HERSTELLUNG VON KOKS
    • EP3124574A4
    • 2017-04-05
    • EP15769682
    • 2015-03-23
    • JFE STEEL CORP
    • DOHI YUSUKEFUKADA KIYOSHIMATSUI TAKASHINAGAYAMA MIKIYANANRI NARUMI
    • C10B57/04
    • C10B57/04C10L5/04C10L9/08C10L2290/06C21B5/007
    • Provided is a coal mixture of which a coal blend is composed and with which it is possible to maintain a high level of coke strength after the carbonization of the coal blend has been performed, even in the case where coal having an excessively large permeation distance is used in a large amount. Large-permeation-distance coal has a permeation distance of more than the value of the permeation distance derived by using equation [I] below. Permeation-distance-decreasing coal has a mean maximum vitrinite reflectance Ro of 1.25% or more and a total inert amount TI of 30 vol.% or less. The blending ratio of the permeation-distance-decreasing coal in the coal mixture is in a range derived by multiplying the blending ratio of the large-permeation-distance coal by 0.25 or more and 3.0 or less. Permeation distance = 1.3 × a × logMF where a is a constant defined as a coefficient of the common logarithm logMF of Gieseler maximum fluidity MF multiplied by a value in the range of 0.7 or more and 1.0 or less, when a regression line that passes through the origin is drawn based on data sets of permeation distance and logMF which are measured for at least one of coal brands having a logMF of less than 2.5.
    • 本发明提供一种煤混合物,该煤混合物构成煤混合物,并且即使在煤混合物进行碳化后,仍能够保持高水平的焦炭强度,即使在具有过大的渗透距离的煤 大量使用。 大渗透距离煤的渗透距离大于通过使用下面的等式[I]导出的渗透距离的值。 渗透距离减小的煤具有1.25%或更高的平均最大镜质体反射率Ro和30体积%或更小的总惰性量TI。 煤混合物中的渗透距离减小煤的混合比率在通过将大渗透距离煤的混合比乘以0.25以上且3.0以下而得到的范围内。 渗透距离= 1.3×a×logMF其中,a是定义为吉塞勒最大流动度MF的常用对数logMF乘以0.7以上且1.0以下范围内的值的系数的常数, 根据对于logMF小于2.5的至少一个煤品牌测量的渗透距离和logMF的数据集来绘制原点。