The LC-type lime silo is a specialized integrated system designed by our company for storing, breaking arches, measuring, and conveying dry powder materials such as powdered lime (both quicklime and hydrated lime). Featuring an integrated silo design, anti-clogging and arch-breaking system, and environmental dust removal devices, this product provides a sealed, moisture-proof, and continuously stable raw material storage and preparation unit for water treatment, flue gas desulfurization, and chemical processes. It facilitates the automation and clean operation of powder dosing systems.
- Structure and Working Principle
- Core structural composition
The equipment is a vertical cylindrical steel structure integrated system, with the main systems including:
- Cage System: The main structure is typically fabricated from carbon steel (Q235B), with the inner walls treated for wear resistance or corrosion resistance. A maintenance platform equipped with safety guardrails is installed at the top. The cage body adopts a fully sealed design to effectively prevent material moisture absorption and compaction, as well as dust dispersion.
- Key component: The anti-breakage arch system, designed to address issues like bridge formation and mouse holes caused by moisture and static pressure in powdered materials. It typically includes:
- Cage wall vibrator (air gun or electric vibrator): operates intermittently to loosen materials near the cage wall.
- Fluidization device: A fluidizing plate or fluidizing rod is installed at the conical section, with compressed dry air introduced to fluidize the material, ensuring smooth feeding.
- Material level monitoring system: Equipped with RF admittance level meters or radar level meters, it continuously monitors the material level in the storage bin, triggering high/low level alarms to alert operators for replenishment.
- The bottom feeding system is typically connected to a star-shaped discharge valve (which shuts off the fan) or a screw feeder, delivering the lime in the silo to the downstream lime milk preparation system or direct dosing point in a stable and controlled manner.
- Working Principle
The lime powder tanker delivers the powder to the top of the silo via pneumatic conveying through a feeding pipe. During feeding, the silo top dust collector activates automatically. When downstream feeding is required during storage, the anti-clogging and arch-breaking system (e.g., intermittently activating air cannons or fluidization devices) is initiated to disrupt potential material arches. Under the combined effects of gravity and fluidization, the lime powder flows through the conical section into the star-shaped discharge valve at the bottom. The discharge rate is controlled by adjusting the valve's rotational speed, which synchronizes with the downstream preparation system's demand to ensure continuous and stable material supply.
- Specialized anti-clogging design: To address the moisture-absorbing and caking tendencies of lime powder, multiple anti-arching measures including vibration and fluidization are implemented. This ensures continuous and stable material discharge while minimizing manual intervention.
- Fully enclosed eco-friendly design: The entire process from feeding, storage to discharge is completely sealed. With an efficient roof dust collector, it effectively controls dust pollution, improves working conditions, and meets environmental standards.
- The system operates with stable and reliable performance: The steel structure warehouse is robust and durable, with critical components like discharge valves and level gauges being industrial-grade products. Designed for long-term, stable operation, it meets the continuous production feed requirements.
- High automation level: Material levels can be remotely monitored and alarm-triggered, while unloading is interlocked with downstream equipment, reducing manual supervision and enhancing the automation of the entire dosing system.
- Comprehensive safety design: The system is equipped with pressure safety devices and essential maintenance facilities, with safety requirements for operation and maintenance fully considered during the design phase.
- Main technical parameters
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Parameter item
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Description / Reference range example
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nominal capacity
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20m³, 30m³, 50m³, 80m³, 100m³, and above (customizable as needed)
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Cabinet material
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Carbon steel Q235B, with internal walls capable of being treated with epoxy asphalt or FRP (fiberglass reinforced plastic) for corrosion resistance.
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level monitoring
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RF admittance/radar level gauge for high/low level alarm
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arch breaker
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Wall vibration device (power 0.5-1.5kW) or fluidized bed/air gun (requires matching clean air source)
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discharge device
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Star discharge valve (shut-off fan), with specifications selected based on output capacity (e.g., m³/h)
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Total dimensions
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The diameter and height are customized according to the volume, with legs or a support frame provided.
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- Typical Application Fields
This equipment serves as the critical front-end unit in the powdered lime dosing system, widely used in:
- Water treatment industry: pH adjustment for municipal sewage and industrial wastewater treatment, as well as lime storage and feeding at the front end of chemical phosphorus removal processes.
- Flue gas treatment: storage and supply of lime powder in semi-dry/dry flue gas desulfurization systems for industries such as steel, thermal power, and waste incineration.
- Chemical and building materials: various production processes that require lime powder as raw material or neutralizing agent.
- Other fields: lime powder storage and supply stations for soil improvement, acid wastewater neutralization, etc.
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