Cement Plant Wear Plate Solutions for Rawmix, Clinker, Cement and Storage Applications

Trimay wear plate and pipe is designed to combat the rigors of high wear environments and is a viable solution to the problem of wear in many industries. By reducing wear, service life of components is extended reducing downtime allowing the user to concentrate on production rather than maintenance and in the process increasing efficiency. Outlined below are some examples of where they can benefit from changing over to using Trimay wear plate in place of more traditional materials.

Cement Manufacture Overview

Cement manufacturing involves wear and tear of many equipment parts due to abrasion. This wear happens at all stages and the extent of wear depends on the size of the abrasive particles. Therefore, it becomes imperative to have a good wear protection plan for all the machine parts in order to ensure long life of the machinery and avoid shut down of the plant. Trimay overlay wear plates find many applications in protection of chutes, deflectors, screeds, hoppers, buckets, conveyors, fan blades, pipe and transitions. In the subsequent sections, we will be seeing the overlay protection solutions for the rawmill to kiln and storage applications in the manufacture of ordinary Portland cement.

Wear Solution for Rawmill to Kiln

The crushed and blended rawmix is transported to kilns through either the conveyor or the slurry line by adding water. The rawmix is subjected to temperatures as high as 1100°C or 2012°F in the kiln. Under these conditions the rawmix is converted to clinker by calcining and sintering. The size of of nanoscale wear particles is such that 15% are less than 5 microns and 5% are greater then 45 microns. From here the clinker is sent to the cement mill for further processing and from there on to storage silos via chain conveyors or powder pumps.

Slat Decks - Belt and Chain Conveyors

These are the transport channels in the cement manufacture process and therefore subjected to abrasion due to sliding wear. While transporting rawmix to kilns the size of the particleschanges from 5 to 15% of wear particles being greater then 90 microns, to 15% less than 5 microns and only 45% larger than 45 microns after the kiln. Trimay has come up with a protection plan through usage of T157 or T171* overlay plates and recommends the use of the appropriate overlay plate based on the desired service life of the conveyor belt. The T171* is armed with the most tight wear particle concentration hence is most suited for protecting against nano-sized cement powders.

Slurry and Powder Pump Lines

These transport lines are subjected to abrasion due to sliding and erosion mechanisms. About 5 to 15% of particles are of size greater than 90 microns before entering the kiln and about 15% particles measure less than 5 microns and about 5% are of sizes greater than 45 microns after the kiln. Trimay suggests the usage of T171* overlay protection plate. The T171* plate is made of boron and hence has a thickly populated wear matrix and is light in weight. This structure of the plate provides good abrasion protection from cement dust by exposing minimum surface area.

Wear Solution for Packaging and Storage

The cement is stored in silos after the final manufacturing stage. From these silos it is removed and filled into bags or loaded into trucks or rail cars or even shipped. During these packaging process, the silo cones are exposed to abrasion and hence need to be protected.

Storage Silo Cone

While the cement is removed from the silos, the parts such as the silo cones are subjected to abrasion due to sliding. The particles causing abrasion have sizes of less than 5 microns (about 15%) and greater than 45 microns (about 5%). Trimay recommends the use of T171* overlay for protection, as it has a densely populated boron matrix which curbs the exposed surface area to minimum. Thereby, the abrasion due to cement particles is minimized. T171* is also the lightest of the overlay plates available.

About Trimay

Trimay develops and manufactures the highest quality wear overlays for customers seeking to maximize efficiency by extending the life of equipment, parts and pipelines exposed to severe wear conditions. Trimay achieves its high-quality standard through research and development, partner companies and exclusive suppliers, as well as through in- house experimentation and process optimization.

* Developed by Trimay Wearplate Ltd. using NanoSteel® Technology under license from The NanoSteel® Company, Inc.

This information has been sourced, reviewed and adapted from materials provided by Trimay Wear Plate Ltd

For more information on this source please visit Trimay Wear Plate.


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