1. PAINPOINT DRIVEN OPENING

Are escalating operational costs and unpredictable downtime eroding your sand and gravel margins? For plant managers and engineering contractors, the primary production phase presents persistent challenges that directly impact profitability. Common pain points include:

High Maintenance & Component Wear: Constant abrasive action leads to rapid degradation of pumps, pipes, and liners, resulting in frequent, unplanned maintenance stops and high parts replacement costs.
Inefficient Material Classification: Inconsistent separation of fines from spec product leads to offspec loads, customer rejections, and wasted processing energy on material that should have been bypassed.
Excessive Water & Power Consumption: Inefficient slurry handling and solids separation systems consume disproportionate volumes of water and kilowatts per ton of final product, driving up utility costs.
Regulatory Compliance Pressure: Managing siltladen process water to meet environmental standards requires effective, reliable solutions to avoid costly site shutdowns or fines.

Is your current setup equipped to handle variable feed grades while maintaining consistent throughput and product specification? The right industrial equipment is critical for turning these operational challenges into controlled, profitable processes.

2. PRODUCT OVERVIEW

The CE Marked Sand Gravel Mining solution is a highcapacity, modular classification and dewatering system designed for primary aggregate production. Its core function is the efficient separation of sand fractions (typically +75µm to 4mm) from gravel feed and the subsequent dewatering of sand product to a stackable consistency.

Operational Workflow:
1. Feed & Distribution: Slurry from the dredge or wash plant is evenly distributed across the full width of the system’s inlet box.
2. Hydraulic Classification: A rising current of water fluidizes the bed, allowing precise separation based on particle size and settling rates.
3. Sand Capture & Dewatering: Classified sand particles settle onto a collection pan or are captured by cyclones before being transferred to a dewatering screen for fines removal and moisture reduction.
4. Product Handling & Water Management: Dewatered sand is discharged via conveyor belt for stockpiling, while process water and fine silt are directed to settling ponds or further treatment systems.

Application Scope: Ideal for greenfield site development, plant upgrades requiring increased sand recovery, or operations processing bankrun or glacial deposit materials with high clay/silt content.

Limitations: Not designed as a standalone washing scrubber for heavily cemented materials; optimal feed size is typically under 4 inches (100mm). Sitespecific geotechnical analysis is recommended.

3. CORE FEATURES

Modular BoltTogether Design | Technical Basis: Preengineered structural steel framing with standardized connection points | Operational Benefit: Reduces onsite assembly time by up to 40% versus welded designs, allows for future plant reconfiguration or relocation | ROI Impact: Lower installation labor costs and preserved asset value through redeployability

AbrasionResistant Liner System | Technical Basis: Interchangeable liners manufactured from certified AR400 steel or polyurethane composites in highwear zones | Operational Benefit: Extends service life in critical wear areas by 35x compared to mild steel, minimizes unplanned downtime for liner replacement | ROI Impact: Predictable maintenance scheduling and reduced annual parts inventory cost

VariableFrequency Drive (VFD) Controlled Hydraulic System | Technical Basis: Electronically controlled pumps allow precise adjustment of water flow velocity | Operational Benefit: Operators can finetune classification cut points in realtime to adapt to changing feed material without mechanical changes | ROI Impact: Maximizes inspec product yield from variable deposits, reducing waste

Integrated Dewatering Screen Module | Technical Basis: Highfrequency, linearmotion screen with spray bars mounted directly onto the classifier structure | Operational Benefit: Delivers sand product at 1215% moisture content directly from the primary circuit, reducing reliance on static stockpile drainage time | ROI Impact: Faster loadout cycles and increased saleable inventory turnover

Centralized Grease Lubrication System | Technical Basis: Automated manifold delivering lubricant to all critical bearings on a timed cycle | Operational Benefit: Ensures consistent bearing protection in highdust environments, extending bearing life and preventing seizure failures | ROI Impact: Lowers manual maintenance hours by approximately 15% per month

CE Certified Safety & Guarding | Technical Basis: Full compliance with EU Machinery Directive (2006/42/EC) including integrated walkways, guarding on all moving parts, and emergency stop systems | Operational Benefit: Provides a safer working environment and simplifies regulatory compliance for operations in regulated markets | ROI Impact Mitigates risk of costly operational stoppages due to safety noncompliance

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Conventional Systems) | CE Marked Sand Gravel Mining Solution | Advantage (% Improvement) |
| : | : | : | : |
| Sand Product Moisture Content | 1825% after primary dewatering | 1215% after integrated dewatering screen| Up to 40% reduction in free moisture |
| Liner Life in Primary Wear Zones| 612 months with mild steel liners| 2436 months with AR400/polyurethane system| 200300% increased service life |
| Tonnage per Kilowatthour (kWh)| Varies widely; often inefficient at <50% load| Optimized pump/screen drive system maintains efficiency down to 30% load| Field data shows 1522% better energy efficiency across variable loads |
| OnSite Assembly Time| Significant welding/fitting required; weeksscale project| Bolted modular design with preassembled subframes; daysscale project| Estimated 40% reduction in installation labor |

5. TECHNICAL SPECIFICATIONS

Capacity / Rating: Modeldependent throughput range of 150 – 600 tonnes per hour of sand product.
Power Requirements: Total connected load between 55kW – 160kW (400V/50Hz/3Ph standard), dependent on model size and configured options.
Material Specifications: Primary structure: S355JR structural steel. Wear surfaces: AR400 steel (minimum Brinell hardness) or specified polyurethane composites. Fasteners: A4 stainless steel or hotdip galvanized.
Physical Dimensions (Typical Large Model): Approximate footprint: 12m L x 5m W x 6m H (feed elevation). Shipping configured in modular sections.
Environmental Operating Range: Designed for ambient temperatures from 20°C to +45°C. Dust protection rating standard for outdoor operation.

6. APPLICATION SCENARIOS

Aggregate Producer – Glacial Deposit Processing

Challenge: A Northern European operator faced inconsistent fines removal from glacial moraine feed, leading to offspec sand products exceeding permissible silt content levels.
Solution: Implementation of a CE Marked Sand Gravel Mining classifier with integrated dewatering screens as the primary sand recovery unit.
Results: Consistent production of EN12620 compliant concrete sand with less than 3% passing 63µm. Plant throughput increased by an average of18% due to reduced recirculating load.

Dredging Contractor – River Gravel Extraction

Challenge: High wear rates on slurry handling components were causing weekly maintenance stops at a riverine extraction site processing rounded gravels.
Solution: Retrofitting an existing setup with this solution’s abrasionresistant liner package and centralized lubrication system.
Results: Component replacement intervals extended from an average of8 weeks to over24 weeks. Annual maintenance hours dedicated to the classification stage were reduced by35%, significantly lowering cost per ton extracted.

7. COMMERCIAL CONSIDERATIONS

Equipment pricing is structured into three primary tiers based on capacity:
1. Standard Range (150300 TPH): Includes core classifier module with basic liners,VFD on main pump,and manual lubrication points.
2. HighCapacity Range (300500 TPH): Adds integrated dewatering screen module,semiautomated grease system,and upgraded AR400 liners as standard.
3. Custom Configuration (500+ TPH): Engineeredtoorder solutions featuring full automation controls,custom liner materials,and enhanced structural supports.

Optional features include advanced process control PLC systems,polymer dosing systems for enhanced fines flocculation,and complete sound enclosures.

Service packages are available separately,ranging from basic commissioning support through comprehensive annual inspection,lube service,and parts kits.Financing options including operating leases,tailored rentaltoown agreements,and project financing can be structured over36to60month terms.

8.FAQ

1.Q:What existing plant infrastructure is required for integration?
A:The system requires a stable concrete foundation,a slurry feed line,a clean water supply connection(process makeup),and an electrical supply meeting specified kW requirements.Detailed interface drawings are provided during engineering review.

2.Q:What is the expected impact on my overall plant water consumption?
A.Field data indicates that due its efficient hydraulic design,the solution can reduce fresh water makeup requirements by1020% comparedto older classifier designs through improved internal water management circuits.

3.Q:What are typical lead times from order placement?
A.For standard models within our HighCapacity Range(300–500 TPH),lead times typically range between14and18weeks.Custom configurations require additional engineering time which will be specified during quotation.

4.Q:What does CE Marking specifically cover?
A.The CE Marking certifies full compliance withthe European Machinery Directive(2006/42/EC),including essential healthandsafety requirements relatedto design construction guarding electrical systems noise emission.This documentationis mandatoryfor saleandoperationwithin the EEAand other adopting markets demonstrating regulatory due diligence

5.Q:What trainingis providedfor ouroperators?
A.Comprehensive onsite operational trainingis includedwith commissioning covering normal startup/shutdown procedures routine adjustments troubleshooting basic fault identification safety protocols Training manualsare providedin both digitaland hardcopy formats