Quantitative Evaluation of Effect of Hyper-coal on Ferro-coke Strength Index
Quantitative Evaluation of Effect of Hyper-coal on Ferro-coke Strength Index
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DOI：
10.2355/isijinternational.53.403
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发表时间：
2013-01-01
影响因子：
1.8
通讯作者：
Hamaguchi, Maki
中科院分区：
文献类型：
--
作者：
Uchida, Ataru;Kanai, Tetsuya;Hamaguchi, Maki
研究了掺加高性能煤（HPC）的铁焦强度与显微结构的关系。特别是，我们专注于煤颗粒的燃烧。通过抗拉强度试验评价了铁焦的强度，并观察了焦炭显微结构随HPC掺量增加的变化。在微观结构的观察中，测量了孔隙的绝对最大长度和圆度。结果表明，随着高性能混凝土掺量的增加，煤粒间空隙减少，煤粒间空隙增大，焦炭强度提高。孔隙圆度小于0.2有利于焦炭强度的提高，随着高性能混凝土的加入，焦炭强度指标降低。我们发现，小于0.05的孔隙圆度包括在煤颗粒之间的空隙中。认为煤粒间的相互粘结是影响焦炭强度的因素之一，可用圆度小于0.05的气孔来评价。
The relationship between the strength and the microstructure of ferro-coke with hyper-coal (HPC) addition is investigated. In particular, we focused on the adhesiveness of coal particles. The strength of ferro-coke was evaluated by a tensile strength test and coke microstructure with increasing the amount of HPC addition was observed. In the observation of the microstructure, absolute maximum length and roundness of pores were measured. The result indicated that the strength of ferro-coke increases with an increase in the amount of HPC, because voids between coal particles decrease and adhesiveness of coal particles improve. A pore roundness of less than 0.2 intends coke strength, and the index decreases with HPC addition. We found that a pore roundness of less than 0.05 is included in voids between coal particles. It is suggested that mutual adhesiveness of coal particles is one of the factors affecting coke strength, and this factor can be evaluated by pores of roundness less than 0.05.