Re: crushing of coke

"Jon Juhlin" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Our company has been asked to quote a cone crusher for use in crushing
coke.
> Maximum feed size of 6" crushed down to 1/2"-. Our main experience is in
> providing crushers for aggregate production and have no direct experience
> with coke. I know very little about coke other than it is coal with the
> volatile components baked out of it for use as a carbon source for steel
> manufacture. The only crushing related information is that it is not
> particularly abrasive but rather sticky and plastic in consistency. It has
> been described as not unlike recycled asphalt from the standpoint of
> crushing.
>
> Any information on crushing coke in general and crushing coke with a cone
> crusher in particular would be read with great interest. If not too much
> trouble please copy replies to:
>
> [EMAIL PROTECTED]
> [EMAIL PROTECTED]
>
> Jon Juhlin
>
>

I have not used a cone crusher for coke. I know of a rod mill using high
carbon pearlitic steel rods and a rubber liner. I seem to remember a
temporary jaw crusher which probably had Hadfields manganese jaws, but I do
not know if coke would give much workhardening on hadfields manganese. The
crushing strength is probably known by your customer as it is probably
important for their customers.

In general terms coke is easy to crush compared to most rock. It is also not
very abrasive. Be careful if asked to work with sinter (for iron production)
as this is very abrasive.