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The Clay Sand Processing Line is a fully automated sand reclamation system integrating spent sand recovery, crushing & screening, cooling & moisture adjustment, mixing, conveying, and storage. Designed for green sand casting processes, it is widely used in foundries producing automotive components, engine blocks, machine tool castings, valves, and agricultural machinery—where high-volume, continuous production is required. Utilizing a "thermal reclamation + moisture control + homogeneous mixing" process, the line enables efficient sand recycling, significantly reducing raw sand and bentonite consumption, improving sand property consistency, ensuring casting surface quality and dimensional accuracy, and supporting green and intelligent foundry development.
With a capacity range of 5–50 tons/hour, the line features a modular design, allowing flexible configuration based on customer plant layout, sand processing requirements (e.g., thermal reclamation), and production needs. It supports standalone operation or full-line integration, seamlessly connecting with molding machines, pouring lines, and shakeout systems to form a complete automated foundry line.
System Components & Process Flow
1. Spent Sand Recovery Function: Collects hot spent sand from the shakeout, conveying it via vibratory conveyor or bucket elevator to the next stage. Features: High-temperature resistant (≤600°C), wear-resistant, uniform feeding.
2. Crushing & Screening Equipment: Roll crusher + drum screen/inertial screen Function: Crushes lumps to ≤3mm and removes cores, metal fines, sintered clinkers—ensuring clean sand grains.. Efficiency: Screening efficiency ≥95%, impurity removal >98%.
3. Thermal Reclamation System (Optional) Equipment: Triple/Four-drum thermal reclaimer Function: Indirectly heats sand to 600–700°C (gas/electric) to burn off residual resin, carbon, and organics—restoring sand activity and improving reuse quality. Benefits: Burn-off loss ≤0.5%, replaces 30–70% new sand—significantly reducing material costs.
4. Cooling & Moisture Adjustment Equipment: Twin-disk cooler + mist humidification system Function: Cools hot sand (≤120°C) to 40–50°C and precisely controls moisture (2.5–3.5%) via multi-point mist spraying—preventing casting defects caused by overheated sand. Control: PLC monitors sand temperature and humidity in real-time, automatically adjusting cooling air and water flow.
5. Sand Mixing System Equipment: High-speed twin-roll muller or continuous mixer Function: Blends reclaimed sand, new sand, bentonite, coal dust in precise ratios to produce stable green sand. Uniformity: Mixing homogeneity ≥98%, meeting high strength and permeability requirements.
6. Sand Conveying & Storage Equipment: Belt conveyor, bucket elevator, sand silo, pneumatic conveying (optional) Function: Transports mixed sand to molding station hoppers or intermediate silos for continuous feeding. Layout: Customizable "straight", "U-shape", or "tower" configurations based on plant height and workflow.
Key Features
Fully Automated, Stable Operation PLC + HMI + SCADA system enables automatic start/stop, parameter setting, fault alarms, data logging, and remote diagnostics—minimizing manual intervention.
Superior Sand Quality, High Casting Yield Clean, temperature-stable, moisture-controlled reclaimed sand reduces blowholes, veining, penetration—improving surface finish and yield.
Energy-Saving, Eco-Friendly, Cost-Effective Energy-efficient thermal reclaimer with waste heat recovery; enclosed structure with pulse dust collector (emission ≤10 mg/m³)—meets national environmental standards.
Modular Design, Easy Maintenance Independent modules with good fault isolation; quick-change components (bearings, screens, rollers)—short maintenance time, low downtime.
Safe & User-Friendly Equipped with emergency stop, overload protection, interlocked doors, dust concentration monitoring—ergonomic design for operator safety.
Main Technical Specifications
Parameter
Specification
Capacity
Expandable
Molding Line
Matched with various molders
Inlet Sand Temp.
≤600°C
Outlet Sand Temp.
40–50°C
Moisture Control
±0.2%
Burn-off Loss
With thermal reclaimer
Dust Removal
Pulse cartridge filter
Control System
Optional SCADA/MES integration
Total Power
Depending on configuration
Weight
30–200 tons
Dimensions
Customized by capacity and layout
Typical Applications
Green sand processing for automotive engine blocks, heads, transmission cases
Mass production of large machine tool beds, columns, tables
Sand reclamation for valve, pump, and pipe fitting foundries
Support for automated molding lines in agri-machinery and construction equipment
Retrofit projects for outdated sand systems
Company Profile
Qingdao Dingli Machinery Co., Ltd.
Qingdao Dingli Machinery Co., Ltd. is a company specializing in the production of casting machinery equipment. It mainly manufactures equipment for casting clay sand, resin sand, coated sand, wet sand drying, lost foam casting, sodium silicate sand, etc. It can undertake various turnkey projects, including the design, manufacturing, installation and commissioning of mechanical sand processing. Our factory has strong technical strength and advanced processing equipment. We have long-term and close technical cooperation with many senior experts and scholars from domestic universities and research institutions. We can provide users with high-performance, reliable products and satisfactory services. Our company adheres to the principles of promoting enterprise development through technology, prioritizing quality, continuous improvement and customer satisfaction. We are willing to sincerely cooperate with friends from all walks of life to achieve common prosperity. Our company mainly undertakes the following projects: 20-180t/h mechanized clay sand processing production line and single machine equipment turnkey project. Annual production of 1000 to 20,000 tons of consolidated resin sand casting mechanized production line and single machine equipment turnkey project. Annual production of 3,000 to 10,000 tons of hot processing coated sand complete equipment and single machine equipment turnkey project. Annual production of 3,000 to 7,000 tons of hot coating sand regeneration complete equipment and single machine equipment turnkey project. 5-15t/h sodium silicate mechanical production line and single machine equipment turnkey project. 5-30t/h three-stage sand drying equipment and single machine equipment turnkey project. 5-40t/h lost foam casting complete equipment and single machine equipment turnkey project and other types of shot blasting cleaning equipment, lifting equipment, conveying equipment, cooling equipment, magnetic separation equipment, environmental protection dust removal equipment. Welcome to contact us~
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2013
Ecer Certification：
Verified Supplier
Qingdao dingli machinery Co., Ltd is located in the famous coastal city, the hometown of casting machine - Qingdao, since its establishment, we are always adhering to the traditional industries with the aim of combined closely with the foreign advanced technology, through the introduction, cooperati... Qingdao dingli machinery Co., Ltd is located in the famous coastal city, the hometown of casting machine - Qingdao, since its establishment, we are always adhering to the traditional industries with the aim of combined closely with the foreign advanced technology, through the introduction, cooperati...
