PBM Projects
Chain Drive Sand Dryer
Addressed short service life issues on the drive chain and sprocket of a rotary sand dryer in a frac sand plant.
Why we were called
The rotary sand dryer at the frac sand plant was experiencing short drive chain and sprocket service life.
What We Saw
Lubrication was done manually, and the dryer had to be shut down with LOTO each time. They were lubricating with a major lubricant manufacturer’s moly-fortified grease. The lubricant was not penetrating the pins and bushings on the chain. Grease was capturing the silica and causing severe wear on the sprockets. New chains were being installed every 6-8 weeks, and new sprockets were replaced monthly.
How We Helped
We installed an automatic spray lubrication system that applied a light, fast-drying, open-chain lubricant. Lubricant was able to penetrate the chain and properly lubricate the pins and bushings. A slight overspray allowed for proper lubrication of the drive sprockets.
Chain Drive Sand Dryer
Chain Drive Sand Dryer
Initial coating of drive chain on sand dryer.
Directional spray nozzles on sand dryer drive chain
Properly lubricated chain on sand dryer. No lubricant dripping or slinging off. Unit is running smoother, quieter, and no chains or sprockets have been replaced in over six months.
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