United Conveyor Corporation (UCC), global provider of ash handling solutions, has launched a sophisticated Pin-Paddle Mixer/Unloader developed exclusively for high calcium ash conditioning. It also involves reduced accumulation, upkeep time and cost overheads.
In the Pin-Paddle Mixer/Unloader, ash and other coarse substances are conditioned with water to restrain dust and to simplify movement to wagons and rail vehicles. The materials are pushed and impelled forward by paddles. Quick and counter-turning shafts and pins raise the material and produce turbulent amalgamation to open up the ash for effective wetting.
Dan Charhut, UCC Vice President of Technology, has stated that fly ash featuring high quantities of calcium from processes like Powder River Basin coal and emission control can serve as a major challenge for facilities utilizing conventional ash conditioning methods for removal. He mentioned that recurrent wet/dry cycles result in cement-like accumulation of material, which results in increased power utilization and decreased throughput. He added that their company has included the latest design aspects in its Pin-Paddle Mixer/Unloader to meet these issues.
The latest features incorporated into the Mixer/Unloader include patent-awaiting cleaning chains to minimize accumulation during every cycle halt by establishing association against pin paddles and ash substance. The chains enhance productivity of the Mixer/Unloader by around 50% and are provided either as a retrofit kit or as a supplementary aspect on the latest 4050 and 6050 Mixer/Unloaders.
The spray nozzles of the Pin-Paddle Mixer/Unloader are used for enhancing water diffusion into the material bed for homogenous conditioning. They can be distinctly manipulated to enable accurate penetration of water during the beginning, mixing and at the end of the operation. They are situated at the top most point of the Mixer/Unloader envelope, thereby reducing the probability of plugging. They can be accessed and substituted externally.
The envelopes used by the pins and shafts are developed from ultra high molecular weight polyethylene (UHMW PE) substance to confront accumulation. Shaft strain and change of course are reduced by means of uniform power distribution between shafts. A serrated drive belt provides even, reduced-maintenance electricity distribution and avoids the requirement for timing gears and lubrication that requires costly maintenance.
Source: http://www.unitedconveyor.com