型号 化学成份Chemical Composition(%) C S 灰份 挥发份 水份 备注 JC-1 ≥98.5 ≤0.03 ≤0.5 ≤0.5 ≤0.5 石墨化石油焦 JC-2 ≥98.5 ≤0.03 ≤0.5 ≤0.5 ≤0.5 沥青焦 JC-3 ≥98.5 ≤0.5 ≤0.5 ≤0.5 ≤0.5 铸锻焦 JC-4 ≥95 ≤0.2 ≤0.5 ≤0.5 ≤0.5 煅煤 JC-5 ≥93 ≤0.3 ≤0.5 ≤0.5 ≤0.5 煅煤 JC-6 ≥90 ≤0.5 ≤0.5 ≤0.5 ≤0.5 煅煤 JC-1/JC-2 含碳量高,密度大,纯度高,容易被铁液吸收,碳的吸收率高