No problem with ceramic lagging, if you provide proper design.

No problem with losing either drive and then maintaining available power with remaining drive with proper design with rubber or ceramic lagging.

Have problem with rubber lagging slip, ceramic can help.

Ceramic lagged pulley will wear belt pulley cover faster if it slips. So, design for your wishes and don't slip.

What more can be said? ■

Sounds interesting. Describe your reason to suspect a difference in drive rpms. How much difference? Why can't the VFD compensate? Have you asked to have them set-up?

As far as fluid couplings are concerned, yes you can, but why? I do not know what it will gain. I does create more maintenance and other ill effects. ■

Dear Mr Ganesh,

Normally a belt is not expected to slip when ceramic lagging of acceptable quality is used on the drive pulleys. The dimples on the ceramic tiles sink into the belt bottom cover creating a 'chain-sprocket' type arrangement and this positive drive so generated is responsible for reducing the T1 on the belt through increase of 'mu'.

However ceramic lagging - the product & its installation - are important to ensure that no slip occurs. Factors such as the quality of base rubber employed, the bonding between rubber & the ceramic tiles and between rubber & the pulley play a major role here.

As one of the largest manufacturers of the product, our experience at Tata Steel, JPL, Essar Steel - all of which include case studies like the one described - demonstrate that employment of this product in the right manner and from suppliers with appropriate knowledge-base would entail virtually unmatched economy benefits to the user in India.

I would welcome your mail to me after which I could share with you - in greater detail - our experience with this product.

Regards ■

CDI has applied ceramic lagging on multiple drives, as has many, many, other engineering firms and operators throughout the world. There are caveats to the details as has been thoroughly discussed in this forum many times over. Review the forum discussions.

Some obvious caveats are:

1. ceramic tile configurations and placement

2. belt tension and surface pressures

3. drive torques

4. belt width

5. pulley diameters

6. transition distance

7. type of belt construction

8. ceramic lagging rubber foundation

9. ceramic with no rubber foundation

10. bottom cover properties and thickness

11. type of bonding between ceramic and pulley shell

12. proximity of multiple drive pulleys with drive and other pulleys

13. clean side and dirty side contact influences

14. belt construction type - fabric, steel, modulus, ...

15. yada, yada, ..... ■

Hello there...

I have designed and built a 1000t/h Dual Carry Conveyor which will be 7.7km long by next year (and is already nearly 7km long with 13km of effective conveying distance).

It has two 400kW drives on two seperate ceramic lagged drive pulleys at the plant end, and another 400kW drive 6.5km away towards the other end in the mine on another ceramic lagged pulley.

It has been running for many years and the ceramic lagging is very good.

Ceramic lagging has had no adverse effects on the belt whatsoever.

There is no drive slip at all.

Next year we intend to put on a fourth drive on the fourth drive pulley for operation at 7.7km

Cheers

LSL Tekpro ■

Wear resistant ceramic lining – Alumina, zirconia & ZTA

Ceramic grinding media – alumina & zirconia

Steel & rubber backed ceramic plate

Pulley lagging

https://aluminaceramics.wordpress.com/ ■