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
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.