A yellow sand dryer is an industrial drying machine designed to remove moisture from yellow sand (also known as silica sand or quartz sand), commonly used in construction, glass manufacturing, foundries, and other industries. Here’s a detailed overview:
Key Features of a Yellow Sand Dryer
1. Drying Principle:
– Uses hot air (from gas, coal, biomass, or electricity) to evaporate moisture.
– Common types include rotary drum dryers, fluidized bed dryers, or belt dryers.
2. Structure & Components:
– Rotary Drum: A large rotating cylinder where sand is tumbled while hot air flows through.
– Burner/Heating System: Provides heat (fuel options vary).
– Feeding & Discharge System: For uniform input/output of sand.
– Dust Collector: Captures fine particles (cyclone or bag filter).
– Control Panel: Adjusts temperature, speed, and airflow.
3. Advantages:
– High efficiency with low energy consumption.
– Even drying without overheating.
– Customizable for different sand moisture levels (e.g., from 15% to <0.5%).
– Durable for abrasive materials like silica sand.
4. Applications:
– Construction (dry mortar, concrete).
– Glass production (low-iron silica sand).
– Foundry molds (casting sand).
– Water filtration and ceramics.
Working Process
1. Wet sand is fed into the dryer via a conveyor.
2. Hot air (300–800°C) flows through the drum, evaporating moisture.
3. Dry sand exits while exhaust gases are filte
.
4. Final moisture content: ~0.1–0.5%.
Selection Considerations
– Capacity: Ranges from 1–100 tons/hour.
– Heat Source: Gas (cleanest), coal (cheaper), or electric.
– Moisture Reduction: Adjustable based on needs.
– Environmental Compliance: Dust control systems may be required.
Manufacturers & Cost
– Leading suppliers: China, India, Europe/USA (e.g., Metso, FLSmidth).
– Price: $10,000–$200,000+ depending on size and features.
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