Laboratory Pulverizer
Wet Coal Hammer Crusher High Moisture Sample Preparation Screenless Laboratory Crushing System
Item Number: PP-SL50
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Product Overview
This high-moisture coal hammer crusher is specifically engineered for processing wet coal samples without the severe clogging and blinding associated with traditional fine-mesh laboratory crushers. Developed in strict accordance with standard GB/T474-2008 ("Method for Preparation of Coal Sample") and incorporating proven international material handling technology, this system solves the challenge of handling sticky, high-moisture feedstocks. By removing fixed bottom screens and implementing an intelligent separation mechanism, the unit ensures rapid, continuous size reduction while fully preserving initial sample moisture levels.
Designed for rigorous industrial testing environments, this equipment is widely deployed across coal mining operations, thermal power stations, metallurgical labs, chemical manufacturing units, geological surveys, and commercial inspection agencies. Its high processing capacity and uniform size reduction enable laboratory technicians to accelerate sample preparation workflows, significantly reducing labor intensity and turnaround time for critical analytical testing.
Built with heavy-duty structural steel, high-wear resistant alloys, and dynamic rotor balance controls, this unit delivers exceptional mechanical stability and smooth operating performance under demanding continuous duty cycles. The fully enclosed housing prevents dust escape, safeguarding operators and maintaining clean-room standards across analytical facilities.
Key Features
- Screenless Dynamic Anti-Clogging Architecture: Eliminates traditional bottom sieve plates that cause frequent blinding with wet samples, utilizing a high-frequency vibrating grate mechanism to route fine wet particles directly to the discharge outlet while directing larger lumps to the high-speed impact zone.
- Zero Sample Moisture Loss Preservation: The completely sealed processing chamber prevents thermal buildup and moisture vaporization during high-speed impact reduction, ensuring total moisture content ($M_t$) remains perfectly preserved for accurate subsequent analytical testing.
- High-Strength Special Alloy Grate Plates: Engineered with wear-resistant alloy grate bar assemblies that offer rapid disassembly, simplified maintenance, and customizable aperture gaps tailored to specific downstream sizing protocols.
- Dynamically Balanced Rotor & Hammer Assembly: Advanced dynamic rotor balancing minimizes shaft vibration and mechanical noise, driving heavy-duty alloy hammers that provide consistent impact force for highly uniform discharge granulometry.
- Total Dust Containment & Environmental Safety: Full internal sealing isolates all dust generated during the crushing cycle, satisfying strict environmental health and safety standards without requiring external auxiliary dust collectors.
- High-Efficiency Dual-Action Reduction: Features a dual-stage flow path where fine wet fractions bypass the primary impact zone while coarse fractions undergo immediate impact reduction, optimizing energy efficiency and preventing over-grinding.
- Rapid Disassembly & Quick Cleaning Access: Designed for effortless chamber opening and tool-free internal inspection, allowing operators to thoroughly clean the system between sample batches to avoid cross-contamination.
- Heavy-Duty Protective Transmission Enclosure: All moving components, drive belts, and shafts are housed within reinforced protective guards to ensure operator safety and long-term transmission component longevity.
Applications
| Application | Description | Key Benefit |
|---|---|---|
| Coal Mining & Washeries | Processing run-of-mine (ROM) coal and washed coal samples with high surface moisture prior to laboratory analysis. | Eliminates sample blockage during daily production quality control and ash content determination. |
| Thermal Power Generation | Preparing daily coal burn samples and incoming shipment feedstock with high water content. | Delivers rapid, representative sample preparation to ensure precise moisture and calorific value calculations. |
| Metallurgy & Coking Facilities | Size reduction of coking coal blends and metallurgical coal samples containing surface water. | Maintains sample integrity and moisture preservation required for coking characterization tests. |
| Geological & Commercial Labs | High-throughput sample preparation in commercial testing agencies handling diverse mineral samples. | Reduces cross-contamination risk through fast-cleaning access and high sample turnover capacity. |
| Chemical & Petrochemical Testing | Crushing damp carbonaceous feedstocks, raw coal chemicals, and synthetic fuel precursors. | Meets stringent environmental dust containment requirements while accommodating varying feed sizes. |
| Environmental Energy Auditing | Preparing biomass-coal mixtures and high-moisture fuel samples for compliance verification. | High dynamic stability and screenless operation handle soft, wet, or fibrous materials effortlessly. |
Technical Specifications
| Specification Parameter | Model PP-SL50-300 | Model PP-SL50-400 |
|---|---|---|
| Product Identifier | PP-SL50-300 | PP-SL50-400 |
| Power Disc Diameter | 300 mm | 400 mm |
| Maximum Feed Size | < 60 mm | < 100 mm |
| Discharge Particle Size | 6 mm (Standard) | 6 mm (Standard) |
| Customizable Grate Gap | < 13 mm (Available upon request) | < 13 mm (Available upon request) |
| Applicable Moisture Content | > 20% | > 20% |
| Production Capacity | 200 – 500 kg/h | 1000 – 2000 kg/h |
| Motor Power | 1.5 kW | 3.0 kW |
| Equipment Machine Weight | 120 kg | 220 kg |
| Overall External Dimensions | 730 × 420 × 770 mm | 1200 × 550 × 800 mm |
| Number of Hammers | 16 | Standard Array |
| Hammer Group Layout | 4 Groups | Standard Layout |
| Compliance Standard | GB/T474-2008 Compliant | GB/T474-2008 Compliant |
| Enclosure Structure | Fully Sealed Anti-Dust Design | Fully Sealed Anti-Dust Design |
Why Choose This Product
- Engineered Specifically for High-Moisture Feedstocks: Unlike standard sieve-based hammer mills that quickly blind when exposed to damp coal, this unit's screenless structure guarantees smooth continuous operation even at moisture levels exceeding 20%.
- Full Standards Alignment: Engineered specifically to satisfy the strict requirements of standard GB/T474-2008, assuring laboratory directors that sample preparation protocols remain fully compliant with international analytical norms.
- Superior Sample Integrity: Zero-moisture-loss sealing prevents drying during processing, ensuring that critical total moisture measurements accurately reflect the true properties of the bulk material.
- Heavy-Duty Construction & Low Maintenance: Featuring high-grade wear alloy components and robust drive systems, this equipment delivers long operating lifespans with minimal maintenance downtime.
- Ergonomic & Operator-Safe Design: Fully guarded transmission parts, low noise output, and simple cleaning routines provide a safe, convenient workspace for laboratory technicians.
Contact our technical engineering team today to request a detailed quote or to discuss customized grate bar configurations for your laboratory sample preparation facility.
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