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Industries
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Process
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Material Collected
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Potential Problems
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Cement Plants
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Cement Kiln
Cement Raw Mill
Cement Cooler
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Cement Powder
(Mixtures of Limestone, Calcium, Iron, Silica, Alumina, Sulfate)
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The temperature of exit gas increased and the dew point lowered result in increasing the dust resistivity.
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Pulp & Paper
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Recovery Boilers
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Fly ash：Sodium sulfate (Na2SO4 )
Black Liquor
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Low resistivity of dust encourages re-entrainment problems and spark occurrence.
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Smelters
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Smelting
Roasting
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Dry dust from ore production
(Copper, Iron Oxides, Sulfur concentrate)
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Waste gas contains high-acid dew point temperature which leading to sticky dusts and corrosion.
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Power
(Utility Boilers)
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Burning fossil fuels(coal)
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Coal Fly Ash
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Low sulfur coals has high resistivity fly ash
High sulfur coals has low resistivity fly ash
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Power
(Biomass)
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Burning
Bagasse
Wood chips
Rice Husks
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Biomass Fly Ash
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Unburned Carbon possibly to clogged GD or Hopper
High moisture of dust results in low resistivity
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