Pu
Dear Mr. Keshav,
not being an expert I'd like nevertheless share my exp. concerning PU linings, which are in my vicinity often used in in handling of highly abrasive and in same time adhesive / prone to caking materials. PU lining is utilized in secondary wear zones of chutes and flow guides. They special property used is then however rather to avoid caking = buildups and thus blocking than wear resistance as such.
For your low throughput application you would perhaps seek contact and consultation with a potential supplier of those specially designed liners, but I think that testing would be a good approach.
Even if not yet specified by you in this here forum, it is necessary to investigate the whole range of materials and marerial properties to be covered. Humidity is a main parameter.
Regards
R. ■
Rubber Lined
maybe rubber lined is better than polyurethane ■
Mild Steel???
Why not try hardened alloy steel decking like some professionals do?
PU typically is used in multi deck screens so beloved by Aussie iron ore people where they get a life of about 1 month. Hydrocyclones are always better in these situations. ■
John Gateley johngateley@hotmail.com www.the-credible-bulk.com
Wear On Screens
It is interesting to consider how screen wear relates to separating efficiency. Looking at the mechanisms of impact, sliding and contact pressures, perhaps altering the frequency or contact angle may provide an optimum balance between wear and screening performance. ■
Mild Steel vs Polyurethane as Screening Media
Dear Experts,
I have absolutely no experience with engineering plastics, but want to improve the wear life of the screening media used by small (Less than 100 TPH) stone crushing units in India.
In India Perforated mild steel plates are very commonly used as screening media in vibrating screens in small stone crusher units.
6mm Thickness is the most commonly used Steel Plate for this purpose. Round holes are drilled in the plate. Most common deck configuration is :- Top Deck - Hole Dia 30mm, Middle Deck Hole Dia 15mm, Bottom Deck Hole Dia 6mm
Is it possible to increase in the wear life of the mild steel plate by replacing it with a steel backed Polyurethane Liner of equivalent dimensions (Say 2mm Thick Steel and 4mm thick Polyurethane)
Please help. ■