Size reduction is usually better done as early as possible to reduce the sizes of downstream equipment, reduce segregation & facilitate sampling etc.

You'll have to pre-screen as well.

Product deterioration might mitigate against early size reduction in some rare cases.

In the case of coal it is harder to steal a bucketful of 20" coals than it is to steal a bucketful of 2" nutty slack.

Security & deterioration are strange bedfellows. If it is cold enough to for pilferage then there will also be reduced deterioration.

For more nuisance: if it freezes then piles of big lumps will break easier. If its hot there is more air in the voids to enable combustion.

If you'd mistakenly put the crusher just before the loading then you would have no storage to outload when the crusher went down. Its that basic! ■

Dear Marcelo, From your statement it seems that you do not have enough space for storage near port of loading for the incoming material having size of 12-20 inches If, you have the space, then the best arrangement shall be-- To stockpile the incoming material (size 12-20 inches) and then think of taking the material from the same for crushing./sizing.

We are designing similar type of coal loading terminals in Indonesia where the ROM size of the coal is between 10-20 inches.90% of the coal trade is done having size of 50 mm(2inches).

Please let us know if, we can share our 30 years of exposure for your esteemed organization to design the suitable system where we will design/ suggest the following by providing—

Flow diagrammes, general arrangement,technical specifications and costing for the following—

1.System designing for unloading of coal by trucks/wagons for incoming material.

2.Stockpiling and reclaiming of un-crushed coal up to crusher including screening,

3.Sockpiling of crushed coal .

4. Reclaiming of crushed coal.

5.Conveying of sized coal up to ship loader.

6.Ship loading arrangement-Complete system.

Regards and MERRY CHRISTMAS.

Anil Seth

Director

Libran Engineering&Services,India

www.libranengineering.com

0091-9811055650 ■

Whither the conclusion that there might be no space? I've heard of reading between the lines but that is a bit off track. HoHoHo.

Next we are told that if there is space the punter should lash out on stockpile machinery for 20 inch lumps when, if he put the crusher in the right place, he would only need machinery rated for 2 inch lumps.

Now we know there are Indonesian plants with " & then think of taking material from the same for crushing" situation :::::behind 30 years of exposure.

Contributors sould be encouraged to think before trying to use the forums as a sales platform. ■

Dear John, Thanks for your comments which shows about % of EGO you have.Please mind your words.If,I have said any thing wrong in this platform there are other good words in the dictionary.I think I have not addressed your name while answering for this post.

These Indian punters are now on the prawl and buying/running the top companies all around the world. Please take this statement seriously otherwise?

Merry Christmas and Happy new year.

Anil ■

I believe this forum is for expressing your views. One may me wrong or write. It is not desirable to give names to someone.

A R SINGH ■

Dear Malonso

Without knowing the complete system proper solution cannot be given . Cushing can be done at any stage after considering following points

1.0Stacking of big lumps for longer period may cause Spontaneous combustion of coal

2.0Stacking/ handling of crushed coal will create more dust nuisance at port

3.0Online crushing while receiving coal before making sock pile may be considered however it is important to know how material is received and importance of unloading Detaining of unloading system in case crushing system is out of order.

A R SINGH ■