Sounds reasonable enough, they are in business to supply equipment. ■

In your neck of the woods/bush a Cable Belt would complicate your tender review procedure. The machinery is complex beyond belief & the reeving presents nip points which could swallow an Impi. Spares inventory would be disproportionate. The days of pioneering on the Pedicle should be long gone!

Equipment expenditure for sensible conveying systems is quite easy to estimate; as with all our business, civil works hold a host of pitfalls; hence the reluctance of those Down South to commit. How, therefore, can Metso glibly suggest a Cable Belt: or have you told them more than you're telling us?

Is your route decided; what is your expected start up date; are you happy with the feed & discharge conditions you will present to the bidders?

Off the back of a fag packet you seem to be proposing about twice the conveying capacity you actually need.

Prepare a reasonable specification for equipment along your seleced route; get a local steelwork rate & an idea of the groundworks involved. Plenty of manufacturers Down South will give you prices for gear. Add it all together & you have a starting price. But you will have to formally enquire if you want a design & build price. ■

Dear Kupfermann,

If you have a reasonable terrain map of the route, I would be happy to take a look and render an opinion on its possibilities and note difficulties. From this, I can give a order of magnitude cost. Contact me through the email below this posting.

We have done many copper conveyor projects and conveyors of 20km.

1. Los Pelambres 12km

2. Collahuasi 8km

3. El Abra 14km

4. Kennecott 8km

Other long single flight systems include:

5. Zisco 16km

6. Curragh 20km

Beware of the Metso Cable Belt (CB). They seem to have trouble with their commissioning of a 10 and 17 km overland in Australia. It has been delayed for many months as they try to sort out their technical problems. I think the you should consider client-to-client discussions on the merits and demerits of this sole source. Historically, the CB has been noted for its extensive maintainance requirements.

Talk to Worsley Aluminum about their program to maintain the 50km CB installation since 1985. Study their spillage problems and hope to avoid them.

Read the publication of the Selby Ian Dixon evaluation of their 12km conventional belt compared to and 10km CB. Eventually, went to court on the Cable Belt design. The court ruled in favor of Selby. ■

Sir,

We are a design build contractor and belt conveyor manufacturer. As noted in other postings the terrain is an important consideration on the difficulty (and cost) of building your conveyor.

If you can give us an idea of the terrain i.e. level, slopes downward at 3 degrees etc. we can give you a budget quote for this equipment.

We also design and build stockyard systems should you need this. ■

Dear Kupfermann,

I have had the misfortune to work alongside cable belt installations and have had talks with AngloCoal on their two new cable belts at Moura Dawson Mine and German Creek Lake Lindsay projects. The cable belt technology seems to be sound but practical use is fraught with danger. At Padcal Mine Tuba in Benguet Province in Lucon in the Philippines, the trouble that Ray Reyes had was enomous and it was a low uptime and drastic downtime. It was costly. I have never seen a cable belt that continues to run without issues. I have had reports from mates working on the cable belt at Moura Dawson Mine and they have all had exactly the same comments, "What made management buy such a piece of Crap!". There has even been talk of replacing the cable belt with a conventional belt conveyor at both Dawson and Lake Lindsay. Cable belt is a cheap initial cost materials handling solution but the maintenance and lost production as the years progress is horrendous.

This is only my thoughts and experiences so use the correct proceedure and have ALL the parameters of terrain, capacity, interface points, etc. of the project to hand before trying to obtain a set $dollars per metre. I have seen too many incidents where the whole concept was not laid out to the designer / supplier and inferior conveyor was the end result. ■

It is very difficult to give a quote for the Conveyor System without having full details about the requirements. We have installed many Conveyors in India and offer you very cost effective solutions if you can provide us with your detailed enquiry.

Please send your detailed enquiry to our address as follows:

Avalani Enterprise

( MHD)

23 Strand Road Kolkata 700001

India.

Ph no. +91 33 22303139 / 22420150

Fax : +91 33 22303139

Email :avalani@vsnl.com ; info@avalani.net

Regards,

For Avalani Enterprise

Jigar R Avalani. ■

If the start & end points are given; then some keen soul could work out the route with the help of Google Earth etc. ■

Dear Mr. Kupfermann,

How many conveyors you use, their type and size depend upon a number of things that I am sure is not available at this stage. These include:

•Potential route

•Terrain to be covered

•Obstacles to be negotiated (roads, rivers railways etc.)

•Power availability

•Power reticulation

•Earthworks and civil works

•Environmental factors

This project is obviously at an early stage and a pre-feasibility study is required to allow you to find your feet and obtain sufficient information to allow you to go out for quotes or build up a budget price. Such a study is not expensive and will give your project momentum.

We would be pleased to offer a multidiscipline study with budget costing which would encompass the system maintainability in an African environment.

Engicon Systems (Pty) Ltd

Tel:+27-789-2102

Fax:+27-789-9664

engicon@engicon.co.za ■

Dear friend

we can send complete design for your conveyor.(including belt , scapers , rollers,pullys , structural details and control pannel.

Actually we are sri lankan company we under take bulk material handling projects.

If you can send more details we can give rough cost indication.

Thanks

Uditha Kohowala

Bulk Material handling consultant

53/46

Eksath Mawatha

Kandy Road

Kalagedihena

Sri Lanka

0777 55 16 50

udithausk@yahoo.com.sg ■

Miracles to order.....the impossible takes a little longer! ■

After 26 years of doing this sort of thing in Africa, I would hardly say that Miracles are called for......

But thanks for allowing me to add to the posting. ■

Dear Tecmate,

Have you been out to see the Curragh 20 km overland? I see you have a critical eye to design and operation. It is next door to Dawson. I would be interested in your review. A word from the street so to speak.

I just posted an enquiry on the latest status of Dawson. Any word on its production? ■

Hi Derek...

Why not LSL Tekpro design and build the conveyor system, and you supply the idlers and Javier supplies the covering..

This way there is no risk at all.

and

Mr Kupfermann

Please e-mail details to me at gspriggs@global.co.za if you would like me to look at the project and give you a quick price off the top of my head. (Incidentally, the range of capacities and speeds you mention do not tally)

Cheers

LSL Tekpro ■

Dear Mr. Weaver:

You publish come-on information about operating cost that seem to show great benefit of pnuematic capsule over belt conveyors.

We studied the capsule on Skyline Mines downhill. They could not compete against the conventional or pipe belt. What has changed in their design or pricing that will now make them competitive?

We are willing to allow the capsule crowd to offer a competitive bid on our overland projects provided:

1. client list with contacts and details of installations

2. List is reasonably current so that there is a due-diligence track for the client with opportunities to visit and discuss with users/operators.

3. Capital & Operating cost assessment can bear out your claims prior to involving the client.

If you are willing to meet these conditions, I will give some details on potential projects so that a proper assessment can be formed. ■

Dear Mr P B Weaver, I am unsure of where you have obtained your cost calculations on Tonnes / Kilometer.

We have many coal mine sites around my area and they are having the coal delivered to the Train Load Out site with between 20 to 84 km haulage distances at Our conventional belt conveyors systems are not as flexible in mobility but over the 15 to 25Km distances, the current figure being bandied is around AUD$0.01c to AUD$0.02c per tonne per kilometer. These figures as you might suspect are not figures that individual mines release, but are from contractor tenders for BOO of conveyor systems.

I am not familiar with your system other than a single direction 1960s shuttle pipe system where the carriage used to get jammed in the buildup of spilt slurry material. One of the other things I would like to know, what happens to mud and slurry buildup within the pipe of your system where the wagons run?

Interested.$0.06c> ■

TECMATE:

Does your BOO cost include the ammortized capital expense?

I believe 1% is quite low. Recall the BOO must pay off all share holders including banks et al plus operating expenses.

I do not know if Mr. Weaver is including the same.

Operating cost for overlands usually will depend on the electric rate, personnel rates and attrition rates for all consumables. The consumables include: belt (+20 years), idlers (1% per year with good design practice), liner wear in chutes and skirts, and all power demands. Then we need to staff the machinery to operate and maintain it. ■

No.. you are seemingly not on right course..

We do up to 3000t/h over many km on a 1050mm wide belt running at 4.1m/sec

The bulk density is 1.7t/m^3 of our material.

Regards

LSL Tekpro ■

Kupfermann,

Is the conveyor horizontal? You need to identify the surcharge angle for the conveyed slope.

What is the D95 lump size or gyratory (jaw?) nominal open side setting?

Typically, primary crushed copper ore with an open side setting of around 200 mm, would require about 160mm belt edge clearance to control spillage.

Given a guess at your installation with the above, a 1050mm wide belt, will have a 6 m/s speed.

Graham's density seems high for all the copper belts I have worked on. Normally, 1500kg/cm is used for volumetric loading.

At Graham's density, the belt speed should be around 5.3 m/s for a 1050mm belt width. ■

Kupferman..

I think that you are loosing a lot of capacity using the old 20 degree idlers.

These are not used anymore as they were for the old cotton belts that did not take kindly to creasing. With today's EP/Nylon belts and of course the steelcord ones, you can do 45 degree on three rolls, (but I still prefer 35 degrees unless the material is sloppy.)

So my measured 4.1m/s x 2500t/h / 3000t/h x 1.7t/m^3 / 1.5t/m3 extrapolates to 3.9m/sec for a full belt and 4.8m/sec at 80% loading.

This is for a 1050mm belt.

1000mm would push you up to Larry's 5.something m/sec (but certainly not 7.5m/sec!

Cheers

LSL Tekpro ■

Dear Weaver,

I am willing to accept a proposal from you on an overland we are quoting. Are you willing to quote? If so, do you prefer a downhill, horizontal, or uphill?

Downhill 12 km, 700 t/h, nickel, 75 mm lump, moist, 800m drop

horizontal 14 km, 1500 t/h, coal, 100mm lump, 12% moisture

uphill 5 km, 6000 t/h, copper, 300mm lump, 3% moisture

Do you wish to provide design and supply or other method?

I know there are many points not defined. This comes if you signify a willingness to cost a system at a level we must quote. I promise you will get a fair hearing, if the quote is viable. ■

PLease excuse our "Doubting Thomas" attitude. I find it difficult to believe your claim of half the operating cost of a well conceived overland. Are you claiming perfect sealing as you vent and compress the carry and return air chambers respectively, do not allow leakage between capsules, and recover the heat of expansion and compression? Or, are these trivial losses? ■

Dear Mr. Weaver,

Per our discussion, I include the following:

1. 12 km downhill, ambient humidity ranges from 60% to 100% with many days at 100%. Conveyor has a lift at the head of about 10 m.

2. 14 km overland lift is 10m near the head end. Ambient humidity ranges from 40% to 100% with some days of heavy rainfall.

3. 5 km uphill has a 250 m lift and has a humidity range of 40% to 100% with some days of heavy rain.

I do note that you have not made a large material handling installation. According to your input there are 5 such pipe systems in Japan and 3 elsewhere. I worry that although we can become excited about the prospects, mining companies will not acknowledge serious intent without a track record from the participants. This will take many years.

Witness the Cable Belt installation in Australia at Dawson and Lake Lindsey. Anglo Coal anticipated a trouble free startup and good production upon completion.

Cable Belt does not appear to be trouble free and Metso seems to have difficulty with commissioning after months of delay. Anyone interested/contemplating a Cable Belt installation should discuss with Anglo Coal their satisfaction. ■

we are manufacturer of conveyor belt,we can supply according your demand,if you need,please contact with me.

best regards

allen

MSN:allen1819@yahoo.com.cn

E-MAIL:allenphile@yahoo.com

WEB:www.xqiang.net ■

I was just reading your POST.

Do you have anyone doing the Conveyor Cover?

We are a manufacturer of Conveyor Covers.

I would like to give you a bid for the 20k.

Michael J. Bright

Tel: (+34) 91 634 71 92

cell: (+34) 652-500.377

Fax: (+34) 91 636 21 15

e-mail: sales@capotex.com ■

Dear Sir:

My company is one of the biggest company producing rubber conveyor belt. we can produce EP conveyor belt, NN conveyor belt, HR conveyor belt, OR conveyor belt, FR conveyor belt, Steel conveyor belt and so on.

Our company has passed ISO9001:2000 quality management system certification, ISO14001:2004environmental management system certification, ISO 10012:2003 metering inspection system certification and so on. We can make conveyor belt according to our customers' request with different standards, such as DIN 22102(German Standard), SANS 1173:2005 (South African Standard), BS 490 (British Standard), AS 1332-2000 (Australian Standard), RMA (American Standard) and etc.

With high quality and advanced equipment, our products sell well in domestic and oversea markets.

Your early reply will be highly appreciated.

Best regards



Foreign Sales Department

Harry

Zhejiang Sanwei Rubber Item Co., Ltd

Email:

href="mailto:huyunhui123@gmail.com">huyunhui123@gmail.com

Tel: 0086-576-83518366

Fax: 0086-576-83518355

Mobile : 0086-13586075214

href="https://forum.bulk-online.com/attachment.php?attachmentid=8651&d=1213376485" id="attachment8651" rel="Lightbox44440" target="blank">■

Sungda Conveyor Co.Ltd, is the biggest manufacturer of conveyor belt in China. Our factory was funded in 1986, located in Rubber industry technical development park in Baoding city of North of China.

we can supply various conveyor belts with competitive price such as Fire resistant conveyor belt, Heat-resistant conveyor belt, Cotton conveyor Belt (CC),Nylon conveyor Belt (NN), EP conveyor Belt , steel cord conveyor Belt, Corrugated sidewall conveyor Belt, Bucket elevator Belt. refering to international advanced technology standared. We can make production according to your requirement.

Please contact with us if you have any question for our products:

Mail address: overseas.sungda@gmail.com;overseas@sungda.com

Msn online chat: sungda@hotmail.co.uk

Website:http://www.sungda.com

Skype: bd-sungda

Tel: 0086-312-2236070

Fax: 0086-312-5936800

Mobil: 0086-13810872336 ■

Dear Mr. Kupferman,

As a conveyor belting subcontractor to OEM of Thyssenkrupp, Sandvik, I am possitive to provide you budget of conveyor belting.

You may provide designation of belting, below is a sample:

1800mm ST7500 19+6 SANS-A

With transverse breaker or not, with loop coil or not

Then I am in position to give you cost idea.

Our capacity: belt width up to 2500mm, tension strength up to ST8000

Regards,

Loy Wang/ Global Sales/ Dalian Dianfeng Conveyor Belt Co.,Ltd.

Tel: +86-411-8659 3980 Email: loy.wang@dlrubber.com

Website: www.dlrubber.com ■

Mr Loy Wang

For your info this thread is 5 years old. ■