• Resources Recycling
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• v.17 no.6
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• pp.57-61
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• 2008

The aim of this study is to produce the coke which can be used for the production of ferroalloy, by mixing phenolic resin and anthracite and sintering it. The influence of factors on the strength of coke were investigated. The results of this study are as follows: It is found that the anthracite coke of $100{\sim}150\;kgf/cm^2$ strength for ferroalloy can be made by a series of process as follows; Mixing homogeneously 6% liquefied phenolic resin and 6% water with $35{\sim}325$ mesh anthracite of low ash content. Making pellet by press the mixture in $10-50\;kgf/cm^2$ pressure. Dehydrating the pellet for 6 hrs at $50^{\circ}C$, and hardening it for 180 min at $200^{\circ}C$. Sinter the mixture for 6 hrs at $1,200^{\circ}C$.

• Resources Recycling
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• v.17 no.4
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• pp.47-56
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• 2008

The aim of this study is to produce cokes which can be used for the production of ferroalloy, for this purpose, domestic anthracite mixed with plastic was sintered at various condition. The combustion and physical properties of anthracite and plastic, coal separation, and the influence of factors on the strength of coke were investigated. The results of this study are as follows: 1. The three kinds of anthracite from the Samcheok region contained 25 to 30% ash of $100{\mu}m$ over size, and have the caloric value of 5,205 cal/g(TaeAn), 4,893 cal/g(JangSung), 4,873cal/g(KyongDong). 2. The recommendable conditions for heavy-fluid separation of the Samcheok coal are to set the specific gravity of heavy fluid to 2.4 and control the size of coal to $35{\sim}140mesh$. 3. It is concluded that phenolic resin powder, liquefied phenolic resin, SAN, and melamine resin can be used as a binder for the anthracite cokes, from the thermal analysis of various plastics. Especially, the liquefied phenolic resin was considered as the most suitable binder as it would simplify the process.