Small-Sized Mobile Stone Shot Blasting Machine
1. Brief Profile
The small-sized mobile stone shot blasting machine is a compact, portable solution designed for surface treatment of natural stone, concrete, and masonry materials. Unlike traditional stationary shot blasting systems, this mobile unit integrates blast wheels, dust collection, and abrasive recycling into a single wheeled or tracked chassis, enabling on-site processing in construction sites, restoration projects, and artisanal workshops.
Developed to address the need for flexible, cost-effective surface treatment in decentralized environments, mobile shot blasting machines emerged in the early 2000s as an alternative to heavy industrial equipment. These machines leverage centrifugal force to propel steel shots, ceramic beads, or recycled glass abrasives at speeds up to 90 m/s, creating controlled surface roughness, removing coatings, or preparing substrates for bonding.
Market Context:
The global mobile shot blasting market is projected to grow at 6.8% CAGR (2024–2030), driven by infrastructure renovation in Europe and North America.
Small-sized models (≤2 m width) account for 35% of total mobile shot blasting sales, with prices ranging from
15,000to
50,000.
Key manufacturers include Blastrac (Netherlands), Aixing (China), and Graco (U.S.), offering models tailored for stone restoration, road marking removal, and anti-slip treatments.
2. Application
Mobile stone shot blasting machines serve diverse applications across construction, restoration, and decorative industries:
2.1 Construction & Infrastructure
Surface Preparation:
Pre-treats concrete floors and stone pavements before epoxy coatings, reducing adhesion failures by 70% compared to manual grinding.
Example: A 2023 project in Berlin used mobile shot blasting to prepare 5,000 m² of marble flooring for a shopping mall renovation, cutting labor costs by 40%.
Anti-Slip Flooring:
Creates uniform micro-textures (Ra 30–60 μm) on outdoor stone tiles, meeting OSHA’s slip resistance standards (≥0.5 μ).
Case Study: The 2022 restoration of New York’s Central Park pathways employed mobile shot blasting to reduce slip accidents by 55%.
Line & Marking Removal:
Efficiently strips old thermoplastic road markings from stone-paved streets without damaging the substrate.
2.2 Restoration & Conservation
Historical Monument Repair:
Removes biological growth (e.g., lichen, algae) and pollution stains from weathered stone facades, restoring original aesthetics.
Example: The 2021 conservation of the Colosseum’s marble arches used low-pressure shot blasting to preserve intricate carvings.
Gravestone & Sculpture Renovation:
Cleans delicate stone sculptures and tombstones with adjustable blast intensity (0.5–2 bar), minimizing material loss.
2.3 Decorative & Artisanal Applications
Artistic Texturing:
Creates “leather finish,” “brushed,” or “wave” patterns on marble countertops and wall cladding for luxury interiors.
Example: Italian designers use mobile shot blasting to produce bespoke stone finishes for high-end residences.
Custom Tile Production:
Artisans employ compact machines to texture small batches of marble tiles, reducing reliance on large factories.
2.4 Industry-Specific Use Cases
Marine Construction: Treats stone breakwaters and docks to remove barnacles and corrosion.
Railway Platforms: Textures granite platforms for enhanced grip under wet conditions.
Museum Exhibits: Cleans and textures stone artifacts for display without chemical damage.
3. Features
Modern small-sized mobile stone shot blasting machines incorporate advanced features for portability, precision, and sustainability:
3.1 Compact & Portable Design
Wheeled/Tracked Chassis: Enables easy maneuvering in tight spaces (e.g., staircases, narrow alleys).
Foldable Handles: Reduces storage footprint by 50% when not in use.
Lightweight Construction: Aluminum or composite frames weigh 200–800 kg, allowing one-person operation.
3.2 Adjustable Blast Intensity
Variable Pressure Control: Pressure regulators (0.5–5 bar) and blast wheel speeds (2,000–3,500 RPM) tailor textures from light brushing to deep etching.
Dual-Nozzle Systems: Optional top-and-bottom blasting heads for simultaneous processing of vertical surfaces.
3.3 Dust & Abrasive Management
Integrated Dust Collectors: HEPA filters or cyclone separators capture 99% of airborne particles (≥5 μm), meeting EPA standards.
Portable Abrasive Tanks: 50–200 L capacity with quick-release valves for easy refilling.
Closed-Loop Recycling: Magnetic separators remove ferrous debris from used abrasives, reducing waste by 30%.
3.4 Safety & Ergonomics
Noise Reduction: Acoustic enclosures and muffled exhausts limit noise to <75 dB(A).
Emergency Stop: Pneumatic or electric brakes halt operation instantly.
Ergonomic Controls: Joystick or touchscreen interfaces minimize operator fatigue.
3.5 Power Flexibility
Dual Power Options: Electric (220V/380V) or diesel-engine models for off-grid sites.
Battery-Powered Prototypes: Emerging lithium-ion models offer 2–4 hours of runtime per charge.
4. Main Parts
A small-sized mobile stone shot blasting machine comprises the following core components:
4.1 Blast Wheel Assembly
Centrifugal Turbine: Single or dual wheels (Ø300–500 mm) with curved vanes for optimal abrasive acceleration.
Direct-Drive Motor: 5–15 kW motors per wheel, ensuring consistent shot velocity (60–90 m/s).
4.2 Portable Chassis
Wheeled Frame: Pneumatic tires or rubber tracks for stability on uneven terrain.
Adjustable Height: Hydraulic legs or telescopic handles accommodate slopes up to 15°.
4.3 Blast Chamber
Removable Hood: Transparent polycarbonate shields for real-time monitoring.
Wear-Resistant Liners: Tungsten carbide or rubber coatings protect the chamber from abrasive erosion.
4.4 Abrasive Delivery System
Pressure Vessel: Stores 50–200 L of abrasive (steel shots, glass beads, or walnut shells).
Metering Valve: Precisely controls abrasive flow rate (5–50 kg/min).
4.5 Dust Collection Unit
Cyclone Separator: Pre-filters large debris before HEPA filtration.
Exhaust Fan: 1,000–5,000 m³/h capacity maintains negative pressure in the chamber.
4.6 Control Panel
Digital Interface: Displays pressure, blast time, and abrasive levels.
Safety Interlocks: Sensors halt operation if the hood is opened or dust levels exceed thresholds.
5. Basic Parameters
Small-sized mobile stone shot blasting machines vary in specifications based on model and application. Typical parameters include:
Parameter Specification
Workable Width 300–1,200 mm
Blast Wheel Power 1 × 5 kW to 2 × 15 kW
Abrasive Type Steel shots (S110–S390), glass beads, walnut shells
Abrasive Capacity 50–200 L
Dust Collector Capacity 1,000–5,000 m³/h (cyclone + HEPA)
Noise Level ≤75 dB(A)
Power Supply 220V/380V (electric) or 10–20 HP diesel engine
Total Weight 200–800 kg
Surface Roughness Ra 10–100 μm (adjustable)
Throughput 10–100 m²/hour (depending on texture complexity)
5.1 Model Variants
Compact Models (MB-300):
Workable width: 300 mm
Blast capacity: 1 × 5 kW wheel
Suitable for artisans and small workshops.
Mid-Size Models (MB-800):
Workable width: 800 mm
Blast capacity: 2 × 10 kW wheels
Designed for construction sites and restoration projects.
5.2 Performance Metrics
Cleaning Efficiency: ≥95% removal of surface contaminants (ISO 8501-1 Sa2.5).
Texture Uniformity: ±8% variation in roughness across the workpiece.
Energy Consumption: 0.3–0.8 kWh/m² for standard marble slabs.
5.3 Operational Costs
Abrasive Consumption: 0.2–0.5 kg/m² (steel shots).
Maintenance:
50–
200/month for wear parts (e.g., liners, vanes).
Labor: One operator can process 50–100 m²/day, reducing manual labor by 70%.
Conclusion
The small-sized mobile stone shot blasting machine revolutionizes on-site surface treatment by combining portability, precision, and sustainability. Its compact design, adjustable blast intensity, and integrated dust management make it ideal for construction, restoration, and artisanal applications. By selecting the right model based on workable width, power source, and throughput requirements, businesses can achieve cost-effective, high-quality surface finishes while complying with environmental and safety regulations. As infrastructure projects and heritage conservation efforts grow globally, these machines are poised to become indispensable tools in the stone processing industry.
