United Conveyor Corporation (UCC) released its new Pin-Paddle Mixer/Unloader, designed specifically for conditioning high calcium ash, with reduced buildup, maintenance time and expense. The mixer/unloader conditions ash and other abrasive material with water to suppress dust and ease transport to trucks and rail cars. Paddles push and propel material forward, while fast, counter-rotating shafts ad pins lift the material and create turbulent mixing to expose the ash for optimal wetting.
New design features include patent-pending cleaning chains, designed to generate contact against the ash material and pin-paddles to reduce buildup during each cycle stop. The cleaning chains can improve mixer/unloader throughput by up to 50 percent. They are offered as a retrofit kit or as an optional feature on new 4050 and 6050 mixer/unloaders.
New spray nozzle styles are utilized for improved water penetration into the bed of material for uniform conditioning and can be independently controlled to allow precise water discharge during start
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In addition, the mixer/unloader’s shafts and pins use covers made of ultra-high molecular weight polyethylene (UHMW PE) material to resist buildup. Even distribution of power between shafts minimizes shaft stress and deflection. A toothed drive belt offers smooth, low-maintenance power transmission without the need for high-maintenance timing gears and lubrication.
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