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Dewatering Screens

Integrated dewatering system with double roll crusher

Integrated dewatering system with double roll crusher

This continuous and automatic dewatering system turns wet petroleum coke slurry and sludge into dry solids that can be stacked or conveyed easily.  The system requires little or no maintenance and is not affected by the amount of water in the solids.  It can be stationary or mounted on tracks and rails.

This type of dewatering system fits most coking applications.  It can also be used for other types of bulk solids that require industrial scale drying before loading onto rail cars, trucks, barges, or ground storage.  It uses the principle of two-mass, natural frequency, sub-resonant magnification.  This means that a small exciting force acts upon a coil spring amplification system to alternately store and release energy and move material in a shuffling motion.

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A waste wood power boiler uses a wet scrubber to remove ash from the boiler system. The water containing unburned carbon (char) and sand with grit is then pumped at a rate of 2,300 GPM to vibratory dewatering screens. The urethane screen panels remove the char and most of the sand and grit from the water. These solids are then moved by conveyor or front end loader to the wood yard. The water is sent to the clarifier system for further solids removal. The unburned carbon is re-injected into the boiler as fuel.

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Dewatering Ash & Sand from Boiler Water
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Boiler Ash Handling & Recovery System

Final dewatered ash, or char, being fed off the dewatering screen

This boiler ash handling and recovery system is designed to remove unburned carbon (char), ash, grit, and sand from wastewater discharged from a wood and bark power boiler. Slurry, composed of water and solids, is sent from the wet precipitator to the dewatering screen at rates of 800 to 2,200 GPM. The HI-G dewatering screen uses (2) low horsepower, industrial vibration motors to apply a high G-force on the urethane screen panels.  This separates the water from the solids.

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fluid bed dryers

Fluid bed dryer for pre-crushed pumice

This vibrating fluid bed dryer is used to remove the surface and internal moisture from pre-crushed pumice. The ore enters the system via a belt conveyor and feeds the dryer. Air heated by natural gas is processed through the fluid bed dryer, removing the moisture.  Moisture laden gas is sent to a dust collector to remove any entrained fines before the gas is released into the atmosphere.  The dried ore is then discharged from the dryer onto a conveyor and sent to a storage silo.

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