High-Quality Coated Sand Recycling Line

• Customization: Available
• After-sales Service: Oversea Service
• Warranty: One Year
• Model NO.: DL
• Control Type: PLC
• Customized: Customized
• Condition: New
• Automatic Grade: Automatic
• Certification: CE, RoHS, ISO9001
• Type: Sand Casting
• Control Mode: Central Control (PLC + HMI)
• Stability: High
• Installation Method: Installation and on-Site Design
• Color: Customizable
• Transport Package: Export Packaging
• Specification: Customizable
• Trademark: Dingli
• Origin: China
• HS Code: 8474802000
• Production Capacity: 10

Product Description

Product Description

Coated Sand Regeneration Line

The Coated Sand Regeneration Line is a set of efficient and environmentally friendly equipment designed to solve the problem of recycling and reusing waste coated sand (shell molding sand) in the foundry industry. It uses a series of physical and chemical processes to remove residual resin and other impurities from used sand, restoring its original properties for reuse in high-quality casting production.

This regeneration line integrates key processes such as crushing, screening, magnetic separation, thermal regeneration, cooling, and screening. With modular design, it can be customized according to customer requirements and integrated with intelligent control systems, dust removal systems, and exhaust gas purification devices to meet the needs of modern green foundries.

Product Features

Thermal regeneration temperature up to 600–800°C ensures over 95% binder removal rate, greatly improving the quality of regenerated sand.

Equipped with multi-stage heat recovery system to improve energy efficiency and reduce operating costs.

Adopts PLC + HMI central control system supporting temperature adjustment, fault alarm, remote monitoring, etc., ensuring easy operation.

Integrated VOC treatment system meets national emission standards with dust emissions ≤30mg/m³.

Modular design allows easy transportation, installation, and maintenance, reducing commissioning time.

Multiple safety protections including emergency stop, gas detection, and over-temperature alarm ensure safe operation.

Main Process Flow

The used film-coated sand is first subjected to preliminary crushing by a crusher, and then large debris is removed through a vibrating screen. 

The crushed old sand is then sent to the magnetic separator to remove iron filings and other metallic impurities, ensuring the quality of the subsequent regeneration process. 

The sand material is introduced into the rotary kiln type or vertical roasting furnace, and is roasted at a high temperature of 600 to 800℃ to remove the resin film on the surface of the old sand. 

The recycled sand material is cooled down to an appropriate temperature (generally ≤ 50℃) through the cooling drum and then undergoes size classification by the vibrating screen. 

Qualified recycled sand is conveyed to the finished product storage area by pneumatic or belt systems, and can be automatically weighed and packaged or discharged in bulk. 

The exhaust gas and dust generated during the production process are treated by the dust removal system and purification devices, and then discharged in accordance with standards.

Main Technical Specifications (Example)
Parameter	Specification
Capacity	1 to 20 tons per hour (depending on the configuration)
Calcining Temperature	600 to 800℃ (adjustable)
Temperature Control	Automatic PLC Control
Heat Source	Natural Gas / Diesel / Electric Heating
Exhaust Treatment	RTO / Activated Carbon / Scrubber
Power Consumption	150kW ~ 800kW (depending on the specific model)
Control Mode	Central Control (PLC + HMI)
Weight	15,000kg ~ 50,000kg
Emission Standard	China GB or EU EN Standards

Typical Applications

Resin Sand Regeneration
Coated Sand Regeneration
 Supporting Equipment for Automated Casting Lines
 Centralized Sand Treatment System
Green Foundry Environmental Workshop
 Central Regenerated Sand Supply Stations

Qingdao dingli machinery Co., Ltd

Qingdao Dingli Machinery Co., Ltd. is a company specializing in the production of casting machinery and equipment. Mainly produce equipment for casting clay sand, resin sand, coated sand, wet sand drying, lost foam, sodium silicate sand, etc. It is capable of undertaking various turnkey projects, including the design, manufacture, installation and commissioning of mechanical sand treatment. Our factory has strong technical force and advanced processing equipment. It has long-term and close technical cooperation relationships with many senior experts and scholars from domestic universities and research institutions. It can provide users with high-performance, reliable products and satisfactory services.
Our company adheres to the principles of promoting enterprise development through science and 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:
Turnkey project of 20-180t/h mechanized clay sand processing production line and single-machine supporting equipment.
Turnkey project of mechanized production line for casting of condensed resin sand with an annual output of 1,000 to 20,000 tons and single-machine supporting equipment.
Turnkey project of complete sets of equipment for hot processing coated sand with an annual output of 3,000 to 10,000 tons and single-machine supporting equipment.
Turnkey project of complete sets of equipment for regenerating hot-coated sand with an annual output of 3,000 to 7,000 tons and single-machine supporting equipment.
Turnkey project of 5-15t/h sodium silicate mechanical production line and single-machine supporting equipment.
Turnkey project of 5-30t/h three-stage sand-making and drying equipment and single-machine supporting equipment.
5-40t/h lost foam casting complete set equipment turnkey project and single machine supporting equipment
All kinds of shot blasting cleaning equipment, lifting equipment, conveying equipment, cooling equipment, magnetic separation equipment, and environmental protection dust removal equipment.
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