HMA Production
description
Transcript of HMA Production
Construction Batch Plants - 1HMA Production
HMA Production
BATCH PLANTS
Senior/GraduateHMA Course
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What you will learn….
• How gradation is controlled in a batch plant
• How asphalt binder is controlled in a batch plant
• Operational principles for batch plants• Using RAP & recycle production with a
batch plant
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N
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Role of Dryer in Plant Process
Dry and Heat the Aggregate Materials
Production Rate of Plant Determinedby Dryer Capabilities
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Types of Dryers
• Counter-Flow Dryers – Used for Batch plants– Aggregate flows into the burner
• Parallel-Flow Dryers – Used for Drum plants– Aggregate flows away from the burner
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Counter-Flow Batch Plant Dryer
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The Modern Batch Plant Facility
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The Modern Batch Plant Facility
- gradation control at the hot bins
- asphalt binder control at the weigh bucket
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Screen Deck
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Screen Deck
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Hot Storage Bins
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Overflow Chutes
Overflowchutes
Hot bins
Screens
Weighhopper
Pugmill
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Overflow chutes
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Overflow Chutes(why two chutes?)
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Hot Bin Indicators
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Hot Bin Gates
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Hot Bin Gates
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Aggregate Sampling at Hot Bin Gate
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Aggregate Weigh Hopper
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Aggregate Weigh Hopper
AggregateWeighHopper
Asphalt BinderWeighBucket
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Weigh Hopper
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Asphalt Binder Weigh Bucket
AggregateWeighHopper
Asphalt BinderWeighBucket
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Asphalt Binder Weigh Bucket (Suspended Inside on Load Cells)
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Pugmill(dry mix cycle, wet mix cycle)
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Live Zone in Pugmill
Livezone
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Overfilling & Underfilling Pugmills
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Inside of Pugmill
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Pre-Computerized, Electro-Mechanical Batch Automation
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Computerized Batch and Silo Loadout Automation
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Screen from Computerized Batch Automation
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“Table Top” Computerized Batch Automation
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QUESTIONS?