Product Parameters
Model |
Mating belt width:mm |
Loose wheel diameter:mm |
1# Loose Sand RPM:R/min |
2# Loose Sand RPM:R/min |
Motor speed:R/min |
Motor power:Kw |
S355 |
500 |
480 |
682 |
800 |
1440 |
4 |
S357 |
650 |
580 |
682 |
800 |
1440 |
7.5 |
S358 |
800 |
580 |
573 |
679 |
1440 |
15 |
S3510 |
1000 |
580 |
573 |
679 |
1440 |
18.5 |
Detailed Photos

Product Description
Strategically positioned above the sand conveying belt, our innovative Blade Aerator effortlessly transforms green sand into a loose state post-mixing, ensuring optimal consistency and performance.
Perfectly engineered for green sand casting mechanized sand recycling production lines, this exceptional machine excels at loosening mixed wet sand and efficiently crushing old sand post-separation of falling sand. It is seamlessly integrated with dust removal pipelines, optimizing the foundry process. In mechanized foundry sand recycling production lines, wet sand agglomeration after mixing and old sand at the sand drop station significantly impact the air permeability of molding sand (>80cm³/min) and casting surface quality. As a pivotal component of the sand processing system, our sand loosening machine redefines modern foundry workshops with its remarkable loosening strength, enhanced crushing efficiency, and advanced dust removal capabilities. This comprehensive article delves into the transformative role of the sand loosening machine in enabling foundry companies to achieve superior regeneration and sustainable production of sand resources through technological innovation, process adaptability, environmental efficiency, and intelligent control.
1. Process Pain Points and Technological Innovation
Addressing the challenges of wet sand compaction (water content 3-5%) post-mixing and the crushing needs of old sand (with core bone and iron bean impurities), our machine achieves revolutionary advances with its dual-mode crushing structure and modular design:
Wet Sand Loosening Mode:
Our cutting-edge rotary knife crushing system features 304 stainless steel staggered blades (hardness HRC55-60), operating at a dynamic speed of 1200r/min, and boasts a processing capacity of 60t/h. The bulk density of the resulting loosened molding sand is ≤1.4g/cm³, enhancing air permeability by 40%.
Dynamic Screening Module: Integrated with a Φ8mm aperture grid, this module ensures synchronous separation of unbroken large particles (return rate <2%), maintaining the uniformity of the molding sand as it enters the conveyor belt (particle size standard deviation <0.15mm).
Old Sand Crushing Mode:
Our hammer impact mechanism, featuring a high manganese steel hammer head (impact toughness ≥120J/cm²), efficiently crushes old sand groups with iron beans (diameter ≤20mm), achieving a crushing efficiency of 45t/h and an impressive iron impurity separation rate of >98%.
Magnetic Pre-separation: Equipped with a powerful permanent magnetic roller (magnetic induction strength ≥1500Gs), this system proactively attracts ferromagnetic impurities, reducing hammer head wear by 70%.
Intelligent Switching Technology:
Our advanced PLC control enables seamless, intuitive switching between wet sand and old sand processing modes with the press of a single button, achieving conversion in under 3 minutes. Ideal for both intermittent and continuous production line configurations.
2. Integrated Solution for Foundry Sand Processing Line
The harmonious integration of the loose sand machine, conveyor belt, and dust removal system creates a high-efficiency sand processing ecosystem:
Space Optimization Design:
Featuring an innovative inverted installation structure, it is erected directly above the B=800-1400mm belt conveyor with a net height of ≤1.2m, achieving a 30% reduction in vertical space usage within the workshop.
The standard inlet and outlet flanges design (ISO 5211) ensures perfect alignment with the sand mixer and old sand screening machine (connection error ±2mm), delivering seamless integration.
Easy Maintenance:
Our quick-detachable cutter head and hammer bracket design minimizes tool replacement time to under 20 minutes;
The observation window and inspection door, equipped with gas spring assistance, allow a single operator to efficiently conduct daily maintenance with ease.
3. Core Advantages and Economic Benefits
Our loose sand machine heralds a new era of excellence in foundry sand processing through cutting-edge material innovation and smart control:
Wear-resistant and long-lasting design:
Experience unmatched longevity with our Blade Aerator as the surface is expertly laser-clad with a robust tungsten carbide coating, boasting a thickness of 0.3-0.5mm. This advanced feature remarkably extends the blade's lifespan to an astounding four times that of conventional blades, ensuring sustained performance and reliability.
Revolutionize your maintenance routine with our box lining, which can be seamlessly replaced with the highly durable ARQ wear-resistant steel plate, known for its impressive hardness of HB450. This innovative solution significantly cuts down your annual maintenance expenses by a remarkable 65%, leading to notable cost savings.
Energy consumption optimization:
Unleash the power of efficiency with our 55kW permanent magnet synchronous motor paired with a cutting-edge variable frequency drive system. Together, they deliver impressive energy savings of 25% compared to traditional asynchronous motors, lowering your electricity bills and enhancing sustainability.
Benefit from our advanced design as the power consumption for crushing 1 ton of molding sand is optimized at ≤0.8kW·h, which is a spectacular 40% reduction compared to conventional roller crushers, resulting in significant energy conservation.
Quality improvement data:
Achieve superior casting quality with a compaction rate of loosened sand fluctuating by a mere ≤2%, while drastically reducing the porosity defect rate of castings from 3.8% to a flawless 0.5%, elevating the standard of excellence.
Maximize sustainability with an impressive increase in the recycling rate of old sand to an exceptional 95%, while efficiently reducing the need for new sand by a substantial 60%, promoting eco-friendly practices.
Certifications
Factory Panorama

Factory Address
QINGDAO SANZHUJI
With over 14 years of pioneering expertise, we at Qingdao Sanzhuji Technology Co., Ltd. excel in crafting cutting-edge sand casting machinery. Our diverse offerings include green sand casting production lines, furan resin sand casting production lines, lost foam casting production lines, and coated sand steel sand buried casting production lines. Each product is meticulously designed to meet the dynamic needs of our clients and to set new standards in sand casting technology.
Contact Us
Address: Located strategically at the North of G204 National Road, in the vibrant Poli Town of West Coast New Area, Qingdao, China, our premises are easily accessible and positioned for optimal service delivery.