Drum System Retrofits
Endurance Equipment provides clients the ability to upgrade their existing systems to the newer, more efficient Debarking technology offered today…
In the past 20 years, there have been many innovations in Debarking equipment that if added to older systems could significantly improve debarking efficiency, production volume, increase yield of fiber in to fiber out and reduce overall maintenance cost.
Some of the areas we offer retrofits are:
Retrofit would provide:
- 25% to 35% more production thru the same size drum shell.
- Reduced breakage of stems going into drum which affects fiber losses, chip quality and debarking efficiency.
- Ground feeding flexibility. Rolling stock or hydraulic loaders can also feed the system due to a lower infeed height.
- Control of the flow of material thru the debarking/ chipping system by the mill line operator, not the crane operator.
- Reduced wear and tear on the crane due to reduced lift height for each load entering system.
- More truck unloading time available due to the reduced lift height requirement.
- “Less Lifter Drum Shell” replacement would be used in areas where debarking is not difficult during most of the year and fiber loss reduction could be a huge financial gain. The typical “old” technology drum shell would average 5% to 8% white wood losses. Less Lifter technology could cut that to as low as 1% to 2%. On an average size mill running 500,000 green tons per year, that an increase of 30,000 tons of product with the same volume of material being processed..
- “Cold Weather Debarking” technology shells would be used in areas where some months are hard to maintain low bark averages. During those times, the drum would be rotated in an aggressive lifting direction providing increased interaction between material. The remainder of the year, the drum would be rotated in the opposite direction with less aggressive lifters providing adequate debarking without excessive fiber losses.
- The trend today is to eliminate the necessity of hydraulics in favor of clean electric drives.
- Conveyor drives and Drum drives can be easily and cost effectively retrofitted to reduce the environmental risk associated with hydraulic oil.
- Endurance has proven that multi chain, live bottom systems with proper drive sequencing is an improvement over the typical slat bed type conveying system. The maintenance on a correctly designed chain bed system is far less than the lightweight slat bed configuration.
- In most cases, we can improve the chamber fill percentage by as much as 20% with this type of conversion.