Sieve Shakers
Sealed Riffle Splitter Enclosed Laboratory Sample Divider Stainless Steel Powder Sub Sampling Reduction Equipment
Item Number: PP-AS24
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Product Overview
This high-precision sample division system is engineered to solve one of the most critical challenges in analytical sample preparation: obtaining true, unbiased sub-samples from heterogeneous bulk granular materials. Utilizing an engineered array of alternating discharge chutes, the equipment splits falling bulk material into two equal, statistically identical portions. By ensuring uniform distribution across multi-point dividing slots, this unit eliminates sampling bias caused by particle size segregation, density variation, or manual handling inconsistency. It serves as an essential preliminary instrument for quality control and analytical verification across laboratory operations.
Designed primarily for heavy-duty industrial applications, the equipment is widely deployed in coal quality testing, mining assay labs, geological surveys, metallurgical testing, chemical processing, and advanced material research facilities. The sealed housing construction specifically addresses high-dust environments, protecting operators from hazardous airborne particulates while preventing the loss of volatile or ultra-fine sample fractions during sample division. Whether processing coarse mineral ores or micro-fine pharmaceutical and ceramic powders, this divider maintains rigid operational integrity across continuous testing cycles.
Built to withstand rigorous daily operation in demanding industrial laboratories, the unit delivers consistent operational consistency and long-term mechanical reliability. Premium material selection—available in high-grade stainless steel or heavy-gauge galvanized steel—ensures maximum resistance to physical wear, surface abrasion, and corrosive exposure. With its robust structural architecture, simple manual feed mechanism, and zero-maintenance static geometry, this sample splitter represents a dependable baseline investment for laboratories requiring strict compliance with international sample preparation standards.
Key Features
- Dust-Tight Sealed Enclosure: Heavy-duty enclosed hood structure completely isolates the dividing chamber, preventing dust escape into the laboratory environment while protecting sample integrity against external moisture and contamination.
- Precision-Machined Multi-Chute Geometry: Features accurately calibrated alternating slots manufactured with tight dimensional tolerances to guarantee equal volumetric split ratios and statistically representative sub-sampling.
- Corrosion and Wear Resistant Construction: Offered in industrial-grade stainless steel and heavy galvanized sheet metal to resist mechanical abrasion from high-hardness ores, quartz, and coal aggregates.
- Wide Granular Particle Range: Accommodates raw material feed sizes from fine powders below 1 mm up to coarse crushed lump materials up to 13 mm without clogging or chute bridging.
- Integrated Dual Receiver Trays: Custom-fitted collection pans align perfectly beneath the discharge chutes to ensure total material recovery without sample loss or inter-batch cross-contamination.
- Ergonomic Quick-Release Locking Mechanism: Intuitive latching hardware provides rapid access to internal chutes for thorough brush-down cleaning between different sample batches.
- Static Operational Reliability: Operates without electrical components or motorized drives, delivering zero-power, noise-free, and maintenance-free performance in remote field stations and central laboratories.
Applications
| Application | Description | Key Benefit |
|---|---|---|
| Coal Quality & Calorific Testing | Sub-sampling crushed raw coal, coke, and anthracite according to national and international fuel standards prior to moisture and ash analysis. | Guarantees compliance with coal sample prep standards while containing toxic coal dust within the sealed casing. |
| Mining Assay & Mineral Exploration | Dividing core drillings, crushed ore samples, and mineral concentrates for geochemical assaying and XRF pellet preparation. | Eliminates size segregation bias in mineral fractions, ensuring accurate metal recovery calculations. |
| Cement & Aggregates QC | Splitting raw limestone, clinker, gypsum, and fine sand samples prior to particle size analysis and X-ray diffraction. | Heavy-duty wear resistance against highly abrasive silica and mineral aggregates. |
| Powder Metallurgy & Ceramics | Representative reduction of metal powders, oxide powders, and technical ceramic granules before compaction or sintering tests. | Maintains ultra-fine powder fractions without dust loss, preserving strict bulk density accurate ratios. |
| Chemical & Agricultural Quality | Sub-dividing bulk fertilizers, industrial salts, catalyst pellets, and synthetic polymers for laboratory moisture and purity verification. | Stainless steel surface prevents chemical reaction, oxidation, or contamination during sample handling. |
| Environmental & Geological Soil Testing | Splitting environmental soil cores, sediment samples, and mining waste slurries for heavy metal assay and contamination mapping. | Ensures statistical sample validity across heterogeneous soil matrices with minimal cross-contamination risk. |
Technical Specifications
Model Variants and Construction Options
To accommodate diverse operational environments and chemical compatibility requirements, the PP-AS24 series is available in four standardized physical configurations:
| Model Identifier | Original Model Reference | Enclosure Style | Body Material | Primary Application Environment |
|---|---|---|---|---|
| PP-AS24-STD | RF-1 | Open Top Funnel | Galvanized Steel Sheet | Standard general laboratory sample division for non-hazardous bulk materials |
| PP-AS24-SE | RF-1M | Dust-Tight Sealed Casing | Galvanized Steel Sheet | Heavy-dust coal, mineral, and aggregate sample reduction requiring dust containment |
| PP-AS24-SS | RF-2B | Open Top Funnel | 304 Stainless Steel | Chemical, corrosive, or high-purity mineral division requiring easy wash-down |
| PP-AS24-SSE | RF-2BM | Dust-Tight Sealed Casing | 304 Stainless Steel | Premium sealed dust-free division for food, pharmaceutical, and high-purity material prep |
Granular Size Specifications and Chute Dimensions
The PP-AS24 splitter line strictly conforms to both conventional coal testing standards (煤化标准) and updated coal testing standards (煤化新标准). Specifications are structured by granular feed sizes and chute slot counts:
| Standard Designation (Conventional) | Standard Designation (New Standard) | Max Feed Particle Size (mm) | Chute Slot Width (mm) | Number of Chute Slots | Ideal Material Granularity |
|---|---|---|---|---|---|
| Large (大号) | 4# | ≤13.0 | 32.5 | 16 | Coarse crushed coal, coarse mineral ores, crushed slag |
| Medium (中号) | 3# | ≤6.0 | 15.0 | 18 | Medium crushed coal, fine gravel, crushed glass, coir |
| Small (小号) | 2# | ≤3.0 | 7.5 | 24 | Fine coal, quartz sand, raw ceramic powders, metal granules |
| Fine Small (小号) | 1# | ≤1.0 | 5.0 | 32 | Fine mineral powders, cement, pharmaceutical powders, slag dust |
Why Choose This Product
- Uncompromising Sampling Accuracy: Engineered with exact symmetry and uniform chute spacing to meet strict statistical requirements for representative sub-sampling.
- Complete Dust Suppression: The enclosed casing option creates a sealed operational envelope, protecting personnel from respiratory dust hazards while keeping laboratory environments clean.
- Superior Build Durability: Constructed with thick-gauge stainless steel or heavy galvanized plating, resisting deformation, abrasive gouging, and chemical degradation under high-volume use.
- Flexible Standard Compliance: Built in precise alignment with coal industry standards, offering seamless integration into standardized testing workflows for power plants, mines, and assay labs.
- Easy Sanitation and Maintenance: Smooth interior welds and removable receiver pans allow fast, complete clean-up between testing runs to ensure zero cross-contamination.
For custom slot dimensions, specialized material grades, or volume purchasing inquiries, contact our technical sales team today to receive a complete quotation and equipment recommendation.
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