Textural changes in metallurgical coke prepared with polyethylene
来源期刊：International Journal of Minerals Metallurgy and Materials2014年第10期
论文作者：Stanislav S.Gornostayev Jyrki J.Heino Tommi M.T.Kokkonen Hannu T.Makkonen Satu M.M.Huttunen Timo M.J.Fabritius
文章页码：969 - 973
摘 要：The effect of high-density polyethylene（HDPE） on the textural features of experimental coke was investigated using polarized-light optical microscopy and wavelet-based image analysis. Metallurgical coke samples were prepared in a laboratory-scale furnace with 2.5%, 5.0%, 7.5%, 10.0%, and 12.5% HDPE by mass, and one sample was prepared by 100% coal. The amounts and distribution of textures（isotropic, mosaic and banded） and pores were obtained. The calculations reveal that the addition of HDPE results in a decrease of mosaic texture and an increase of isotropic texture. Ethylene formed from the decomposition of HDPE is considered as a probable reason for the texture modifications. The approach used in this study can be applied to indirect evaluation for the reactivity and strength of coke.
Stanislav S.Gornostayev，Jyrki J.Heino，Tommi M.T.Kokkonen，Hannu T.Makkonen，Satu M.M.Huttunen，Timo M.J.Fabritius
Laboratory of Process Metallurgy,University of Oulu
摘 要：The effect of high-density polyethylene（HDPE） on the textural features of experimental coke was investigated using polarized-light optical microscopy and wavelet-based image analysis. Metallurgical coke samples were prepared in a laboratory-scale furnace with 2.5%, 5.0%, 7.5%, 10.0%, and 12.5% HDPE by mass, and one sample was prepared by 100% coal. The amounts and distribution of textures（isotropic, mosaic and banded） and pores were obtained. The calculations reveal that the addition of HDPE results in a decrease of mosaic texture and an increase of isotropic texture. Ethylene formed from the decomposition of HDPE is considered as a probable reason for the texture modifications. The approach used in this study can be applied to indirect evaluation for the reactivity and strength of coke.
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