Binder for metallurgical coke and a process for making same

摘要

A binder for making metallurgical coke and a process for making the binder. The binder is thermally hydrocracked pitch which has been de-ashed. The binder may be mixed with low rank bituminous coal, heated to make coke which is acceptable as a metallurgical coke. The thermally hydrocracked pitch may be de-ashed by mixing with a solvent, and separating the insoluble portions from the soluble portions using a centrifuge. The soluble portions may be separated from the solvent, for example, in a fractionating section, and used as the binder with poor coking coal to make metallurgical coke.

主权项

1. A process for producing a pitch based binder for metallurgical coke comprising:
mixing a solvent with a thermally hydrocracked pitch; separating the thermally hydrocracked pitch into a liquid phase and a solid phase, wherein the liquid phase includes solvent; separating the liquid phase into solvent and a de-ashed pitch; drying the solid phase to recover a residual solvent; and mixing the de-ashed pitch as a binder with a poor coking coal to form a metallurgical coke.