Bulk Ore Transportation
Thanks very much to all participants for participating in the discussion thread initiated by me.
We will consider the points made during interaction.
I would be closing this thread from now on.
Thanks very much once again and Best Regards. ■
Re: Bulk Ore Handling
Dear Mr. Sharma,
Libran Engineering can share 30 years of experiance for developing the facilities for loading/unloading of your material.
At this moment we are handling two coal loading terminals in Indonesia.Recently,we got order for doing prefeasibility study in developing coal unloading facilities in Srilanka.
In past we were involved with consultants for developing the entire handling facilities at -Dahej port for Adani,New Mangalore port,Paradip port,Safaga port in Egypt ect.
Please visist our site--www.libranengineering.com
Regards, Anil
Director
Libran Engineering& Services ■
Re: Bulk Ore Handling
Please consider the possibility of reducing moisture content and other possible benefits which affect shipping costs at the loading port rather than at the receiving port. ■
Re: Bulk Ore Handling
Your minimum throughput will be about 10,500 tpd which wil be subject to your on land storage capacity. There is heavy rain at any site en route.
The cargo material is worthless in its present form, 30% is water & the SG is only 1.08 (almost sea water in the latitudes under consideration).
As Larry Nordell advises; get the value up & start again.
Or pump it ashore: may liquify means will liquify.
A geared vessel is out of the frame: a floating unloader of 500tph average output is quite a big machine & you still have to take the shoreline operations into account.
If you get the moisture content down to 5% you will need to handle about 400 tph continuously & reliably & minimise hatch openings which will detract from the loading rate.
How hazardous is the material? 45mm sticky lumps which liquify sounds a bit like a clay type of material. For what its worth (the material) I'd pulp it & pump it. Your conveyors will be gobbed up to hell & back! ■
John Gateley johngateley@hotmail.com www.the-credible-bulk.com
Nickel Ore Transportation
Thanks very much for contribution to the thread.
The ore is mined with a moisture content of around 30 %. To remove the moisture, a dryer would have to be installed at mine or nearby. Drying the ore would lead to the problem of dust generation. In this case, we do not have any other option and will have to handle wet ore only.
Since there is no deep water port located near the mines, the ore would be transported by barge to the mother vessel .
The possibility of liquification or ore due to rain has to be handled by proper covering of ore. The ore would be stoted in open yard for blending. Since the area will have heavy rains, the ore sockpile would be covered by plastic sheets. We have seen other Ferro Nickel producers using same methods.
Our plan is to transfer the ore from point of discharge ( Jetty in our case) to the stockpile by using barge unloaders and pipe conveyor. ■
Re: Bulk Ore Handling
"Proper covering of ore" "open yard for blending""heavy rains""covered by plastic sheets".
If there's a wrong way to do a job somebody will find it!
"We have seen other FeNi producers using the same methods." Means nothing! Why bother with a pipe conveyor? Just throw some plastic sheets over an open troughed belt.
"Semper in faeces summus est. Sole deprofundis variat." In this case "deprofundis nihil variaverat". ■
John Gateley johngateley@hotmail.com www.the-credible-bulk.com
Re: Bulk Ore Handling
Dear Mr. Sharma, As advised by Mr. Johngateley to remove the moisture at mine end seems to be very logical considering the following--
1.Shipping 30% moisture with material will add to material cost and the final figure/cost of handling the material as mentioned by you to me from mine end to you site will not be possible.Please note that ship chartering rates have gone skywards today.
2.As stated by you that there shall be dust problem if,you will installed dryer at mine site is also not correct.By providing good dust collecting arrangement/equipment you can overcome the same.
Regards, Anil ■
Nickel Ore Transportation
Dear Mr. Johngately and Mr. Seth,
Thanks a lot for suggestion but the dust problem would be during subsequent handling in addition to drying process . Because of this issue, the process of Ferro Nickel production has integreted Calcining Kiln with the Drying Kiln. If some dry ore is to be stored for emergency purposes, it is put in covered shed.
Another point deliberated is possibility of using troughed conveyor with covering. We will require multiple bends for ore conveying and the conveyor would pass through third party property. This will make us go fo the pipe conveyor. As for covering the stockpile, we have no choice as the storage would be for about 2 months production. Constructing a shed over such big storage area would require huge investment. As such , the ore cannot absorb more than 35 % moisture and water drains by itself.
Hence, only option available would be transporting wet ROM ore even though we have to incur extra expenditure on trnaportation.
The question is , how do we decide on the ship size for transportation of ore? ■
Re: Bulk Ore Handling
Ore: Saprolite/Limonite
Sp. Gr. : 1.08
Size: - 45 mm
Moisture: ~30 %
The ore is sticky and may liquify if exposed to heavy rain.
Total material movement: 2.5 Million Tonnes per year.
Some doubts:
sp.gr. 1.08 - This appears to be very low. Bulk density of Limonite is in the rage of 1.6 to 1.9 for -45 mm crushed ore with 55% Fe content.
Moisture: 30% - Is this number inclusive of LOI. LOI can be +10% for some Limonites.
Ore may liquify if exposed to heavy rains: Is the ore like clay and lumps are clay lumps. In this case you can consider making it into slurry and pump it to ships (also ship to shore) using Marcona flow method. Iron ore concentrate was transported from Peru to Japan using this method in late sixties. ■
Re: Bulk Ore Handling
It seems you are denying the obvious and not dewatering.
Dust and its control will have far less impact on the cost and performance than the negative impact of high moisture and its lack of control.
You need a capable engineer that can provide a proper solution and then you can get critical. ■
Bulk Ore Transportation
The concern is appreciated.
All the Saprolite and Limonite transportation is without draining or drying. Major trade of this ore is between Indonesia/Phillippines and China with smaller amount going to Europe, as per our information, no company has installed a stand alone dryer for this ore.
We have no choice but to transport ore in wet condition. ■
Re: Bulk Ore Handling
Again: How hazardous is this cargo? It is being lightered at both ends; shipped under charter; dragged along jetties & hidden under plastic sheets. Can you realistically expect respectable mariners to be a party to such activities in this day & age if the material is a marine pollutant. The proposed trading route might not be the most stringent on safety, there's an understatement if ever!, but the IMO etc will soon get involved via the insurers: you know the score these days.
If it must be handled wet then I am surprised at the original question. You have to pulp & pump. Whether or not, & where, you dewater is a choice determined by the shipping cost. If you thickened at the loading point you would be carting just a bit more water than the normal ore content. If you filtered then you could dump into the vessel by conveyor(s). On board filtration would seem to be a bit of no go, only at present though.
Any change in moisture levels will involve water storage, legally speaking, so if you used barges then the water balance would have to be accommodated in the barge. Consider the actions taken against VLCC's dumping untreated ballast bio-hazards.
As you must be aware, zinc based paints are severe marine pollutants. What price tons of spilled nickel clays then?
Just where in Europe is this crud being delivered? ■
John Gateley johngateley@hotmail.com www.the-credible-bulk.com
Bulk Ore Handling
Dear Friends,
I am happy to join this forum of knowledgable people.
We are a stainless steel producing company and are now planning to set up a Ferro Nickel Plant on western coast in India.
I would like to get views of members on means of transporting ore from Indonesia/Phillipines. We are planning to set up a dedicated jetty for our use as no port is there nearby. Basic data is as under:
Ore: Saprolite/Limonite
Sp. Gr. : 1.08
Size: - 45 mm
Moisture: ~30 %
The ore is sticky and may liquify if exposed to heavy rain.
Total material movement: 2.5 Million Tonnes per year.
Considering heavy monsoons, we will have to transport this quantity in about 8 1/2 months.
I would like to get advise on the following:
. Economical form of ore transport- Size of Ship, Charter/Purchase.
.Type of ship - with onboard unloaders or use a floating unloader for transfer to barge.
. USe of transhiper for early release of ship
I will be highly obliged if some advise is givem. I will also be happy to interact with companies offering a long term tie up.
Best Regards ■