The residue is chiefly carbon, with minor amounts of hydrogen, nitrogen, sulfur, and oxygen.Also present in coke is the mineral matter in the original coal, chemically altered and decomposed.

• 剩馀物主要为碳，含少量氢、氮、硫和氧，还有在焦化过程发生了化学变化和分解的原煤中的矿物质。