Are you handling your product through pipelines, if so, the company I work for does pipe lining with a Polyethelyne liner. If you have questions contact me at astone@insituform.com ■

Dear Shri Prashant,

Please clarify the location of the liners. The type of liner also depends upon the coal lump size and coal velocity.

Regards,

Ishwar G Mulani.

Author of Book : Engineering Science and Application Design for Belt Conveyors.

Advisor / Consultant for Bulk Material Handling System & Issues.

Email : parimul@pn2.vsnl.net.in

Tel.: 0091 (0)20 25882916 ■

Dear Prashant,

Visit Poly Hi Solidur for their testimonials on TIVAR 88 and other polmer liners for coal and other installations per:

"Poly Hi Solidur, Inc. - Polymeric Solutions & Superior ServicePoly Hi Solidur, Inc is the world's leading processor of semi-finished ultra high molecular weight polyethylene (UHMW-PE) offered under the TIVAR® trade name. ... "

www.polyhisolidur.com/

In general, it is better than 304SS. You need to separate the variables of shear and gouging damage. Polymers can not take high gouging forces. Their static and dynamic friction factors are substantially better than SS.

Having said that, there are metal liner materials that have equaly good friction and have much higher gouging resistance. It all bils down to total economics of capital and operating cost optimization.

Lawrence Nordell

www.conveyor-dynamics.com ■

Dear Shri Prashant:

C.U.E., Inc. manufactures and markets Polyurethane sheets for chute and bin lining applications under the "Hardliner" brand name. These Polyurethane sheets offer excellent impact and abrasion resistance properties, which results in extended service life and less downtime for maintenance. Hardliner sheets are lightweight (1/7th the weight of steel) and flexible for easier installation. To learn more about Hardliner sheets, visit our website at www.cue-hardliner.com. Best Regards. ■

Dear Shri Prashant:

If you are satisfied with the use and longevity of the stainless steel liners but are having problems with material plugging, we suggest you consider using a NAVCO pipe vibrator. We have supplied many applications successfully. Theses application include those that have "plastic" liners.

The pipe vibrator will aid in reducing the plugging, can be attached to the chute/pipe without any welding, does not required that the process be shut down to install or service and can be moved along the chute/pipe to fine tune the location of the plugging.

Please refer to our web site - www.navco.org - for more information. If you send us details of the chute/pipe, we can give you a proposal for the application. ■

Dear Sir,

In order to improve the SS steel performance please consider the our "superelastic" polyurethane lifters or impact pads.

With the correct application (thickness in relation to the max. feed size) of the polyurethane liners you can value a lifetime 2 time more than SS steel

Moreover you can further improve the liners lifetime with the installation of the "superelastic" polyurethane + allumina tiles.

If you agree more information not hesitate to contact mefor specific applications.

A. MARIO

EUROGOMMA ■

Polyethylene and urethane liners do not do well with light flow showing a much higher friction coefficient than polished stainless.

Some chrome based surface treatments do much better in both friction coeff. in general and significant in light flow.

No static charge is created and can occur with plastics.

Wear life can be much higher.

Heat can be applied to eliminate icing in chute.

Lawrence Nordell

www.conveyor-dynamics.com ■

polyurethane works well.

if your temperature is higher than 150 degrees c, you might want to consider , hard overlays there are many brands in the market.

Tritem, tricon , hardflex , etc etc.

they are expensive put live much longuer than 304 ss, let's say that if a 304 pipe lasts 1 month, some of these overlays can last 16 years. I will be glad to supply you with actual exerimental data, and comparative resuts from different sources, but these products do not compete with polyurethane in the low temperature range.

Regards

Marco ■

rubber backed steel and ceramic panels work well for both impact and wear

www.losugen.com ■

Mr. Prashant,

We can offer product with Rubber Backed Ceramic which is working satisfactorily handling Coal / Lignite up to -300 size and falling ht of 2-3 mtr.

For further detail you may write to

info@hofmannindia.com

Thanks

Sunil Kapasi

Director

Hofmann Engg. & Mktg. P. Ltd.

India ■

Mr. Prashant.

Just as some of my friends at the forum I sell liners aswell.

Here in Corrosion Engineering we manufacture and sell Ceramic Liners (P-95) embedded in a rubber matrix. Ceramic is an excellent product to fend abrasion. Nonetheless, when there is impact, ceramic tiles alone will crack and fall. Rubber products on the other hand do a great job for impact applications but could have serious problems when facing abrasive materials. The combination of Ceramic and Rubber will bring the best of both worlds together.

The key factor you should be looking for when selecting wear material is the cost per ton processed. We service coal mining operations in Colombia with proven success (30 million tons a year).

Feel free to contact us for more information and detailed case studies.

Regards, ■

We are dealing with the abrasion resistant ceramic for conveying systerm.

get more information at www.kingcera.com ■

Hello,

My name is Tom Gregory, manager of Gregorys Linings since september 1989.

We specialise in Industrial Lining Solutions in all aspects of abrasion and flow

problems inc Hoppers, Chutes, Buckets, Silos, Tipper trailers etc.

For information on the best solution to your request regarding polyethylene linings.

please give us a call on 01724 710712 or email us at tomgregory06@aol.com

regards, Tom Gregory. ■

Best solutions used abrasions resistance alumina ceramic lining and Silicon carbide ceramic components

Alumina ceramic lower cost than SISiC ■

Originally Posted by Prashant

In order to avoid wear and choking, (during coal handling) we've been using SS 304 liners.

Are there any better liners such as Polymer etc. which are economical and more effective than SS liners?

Can I get some information on this item?

Supplier of ceramic (Al2O3) pipes and other abrasion parts (sheets, plate, tile, etc.) for the mining industry.

----------------------------------

E-mail: zhanghongbo@qdcb.com.cn

Mobile: 0086-186 6392 9510 ■

CBC supplies alumina tubes, cyclone, cone, blocks, tiles for wear protection.

Zhanghongbocbc@163.com

----------------------------------

http://aluminaceramics.blog.com ■

ROCKY DEM code can differentiate the differing stresses on the surface of any liner and enable translation to various damage mechanisms that accelerate gouging and shear abrasion. Our website is being constructed to illustrate the potential stresses and calibrate the damage for applications in bins, bunkers, hoppers, and on belt surfaces. See the beginning:

http://www.conveyor-dynamics.com/Rocky

The presentation will be more comprehesive during the next 30 days. We seek demonstrations to show what can be achieved. ■

Rock boxes are nice if you have dry material. One project I worked on, the coal would just stick to the wall of the conveyor head chute. We were receiving coal stored outdoors at the port. After a rainstorm this stuff would be delivered looking more like black slop than coal. Dry coal does not stick, unfortunately most people don't work in the desert At the base of the chute someone engineered a square to round transition and the material kept hanging up in the corners and then blocking the whole chute. If your material is at all wet do not use a rock box!

We hung a rubber mat curtain 4 inches from the conveyor head wall. As the material hit the curtain it would shake and prevent build up from occuring. Modify the head so you can slide a 2" pipe through and connect your rubber mat to the pipe. The heavy mat is not the easiest thing to install but can be managed by the maintenance crew and you will no longer be plugging your chutes so operations will love you. ■

Originally Posted by Prashant

In order to avoid wear and choking, (during coal handling) we've been using SS 304 liners.

Are there any better liners such as Polymer etc. which are economical and more effective than SS liners?

Can I get some information on this item?

Dear sir,

Maybe u can have a try to our alumina ceramic liner . it not only can solve the wear problem, but choking as well .

and our price is very competitive ,coz we are the source. more details u can send the masseges to micheal.kingcera.com

Have a nice day! ■

Hi to all dear friends

Imagine you have a car dumper ( wagon tipplers ) in your site and according to your company policy you must unloading all type iron ore bulk material , sizes up to 40mm , pellets , and also iron concentrate with high moisture !!!! maybe in 24 hours must unloaded all of them !

So you have 3 hard problems :

1.normal abrasion

2.high impact abrasion

3. and ….material sticking on hoppers walls and cutting flow or mixing material

Now what is your solution to find best wear liners to covered both of 3 problems

Thanks ■

This thread has been going on; and on; and on.

So:

1.normal abrasion....if a liner is OK for high impact abrasion it will handle normal abrasion.....or what?

2.high impact abrasion.....abrasion resistant metals are good and if they are rubber backed they are marginally better. But the fastening regime is vital.

3. and ….material sticking on hoppers walls and cutting flow or mixing material..... material hang up is a geometric issue based on valley angles. What can hang up will hang up.

Apart from a 24 hour residence limit there are no supporting quantitative figures. Liner suppliers cannot & should not quote wear performance because every material is unique based on actual exposure factors eg continuity of exposure, material size spectrum, geometry of the flowing cross section and the chemicals present. When there are problems in this topic they arise because the original material had changed; the original liner was unsuitable or the original specification was deficient. With liners it is a question of 'What can you afford?'

Does it matter? If you are in business then accept a wear cost and get on with it. If you don't accept the cost then prepare to go out of business. In between, a few bob here or there is not going to harm anybody...or are you at NASA? ■

Hi

We have now developed a ceramic wear plate with magnet backside for easy assembling/deassembling against steel.

The plate are 500x500mm and consist of ceramictiles 20x20mm and 4mm thickness. Total thickness are est 6-7mm

The use will be chutes with fine materials.

The plate can be cut by knife between the tiles

Anyone like this idea?

Contact me on: post@mineralteknikk.no ■

We are supplier of wear protection alumina ceramics, ceramic grinding media, precision ceramic parts and inert ceramic balls (catalyst bed support media).

Please check our company web or blog for more info about our products:

www.cbcceramics.com

https://aluminaceramics.wordpress.com

If you are looking for an alternative supplier, we will be your choice.

Hope to work with you in the near future.

Best Regards,

Zhang Hongbo

Sales Manager

Qingdao CBC Co.,Ltd.

Suite 1006 Building No. 2 Celebrity International,

No. 39 Shiling Road, Laoshan Dist.,

Qingdao, China 266062

T: +86 532 8596 8596

F: +86 532 8596 8595

www.cbcceramics.com ■

Wear resistant ceramic lining – Alumina, zirconia & ZTA

Ceramic grinding media – alumina & zirconia

Steel & rubber backed ceramic plate

Pulley lagging

https://aluminaceramics.wordpress.com/ ■