Question 1

Why can coke fines not be used directly?

Accepted Answer

The calorific value of fines is no different from lump coke, but a bed of fines destroys gas permeability in the furnace. That is why fines alone cannot be used in most applications.

Question 2

What is the most important property of a coke granulation binder?

Accepted Answer

Stability of the granule against moisture and handling, and that the binder does not push ash or sulphur outside the customer specification. That second condition should usually be checked before any strength testing.

Question 3

Where should we start?

Accepted Answer

With the economics: monthly fines generated, the price difference against lump product, and the all in cost of granulation. If that equation closes, the technical discussion about granule specification becomes meaningful.

Coke Fines Granulation Binders — Turning Fine Waste Into a Usable Product