Project Background
Client: Leading ferroalloy processing plant in São Paulo, Brazil
Challenge: Needed to replace aging equipment for handling bulk manganese ore (density: 3.7 t/m³). Existing cranes caused 15% material spillage and couldn,t operate in Brazil,s tropical climate (-20°C to 40°C temperature swings).
Objective: Install a 25T QZ-type grab bucket bridge crane with:
≤5% material loss during transfer
24/7 operation capability
Resistance to coastal humidity and thermal stress
Key Features of Sinoko QZ Grab Bucket Bridge Crane
Technical Specifications
| Parameter | Value | Design Rationale |
Capacit | 25Tons | Optimized for manganese ore hoppers |
Span | 31.5m | Covers twin processing lines |
| Lifting Height | 20m | Clears 18m-high stockpiles |
| Duty Class | A6 (heavy cyclic) | Sustains 150 cycles/hr |
| Power Supply | 380V/50Hz/3Ph | Matches Brazilian industrial grid |
| Ambient Temperature | -20°C to +40°C | Tropical climate adaptation |
Engineering Innovations
Dual-Material Grab Bucket:
Hybrid design (dragline + slipper) prevents ore leakage
Abrasion-resistant steel for 10,000+ cycles
Thermal Compensation System:
Expansion joints in runway beams accommodate 60°C delta-T
Lubrication reservoirs prevent cold-start seizure
IP55/C5-M Corrosion Protection:
Epoxy-painted structural components
Stainless-steel electrical enclosures
Busbar Power Delivery System:
Eliminates cable drag for 31.5m traverse
99.5% power transmission efficiency
Implementation Process
Sinoko crane offers a complete service package for customers, covering everything from supply and installation to training.
Phase 1: Site Adaptation
Challenge: Coastal salt corrosion degraded existing runways
Solution:
Installed galvanized steel runway beams (ISO 1461)
Laser-aligned tracks to ±2mm flatness tolerance
Implemented cathodic protection against electrolysis
Phase 2: Crane Installation & Commissioning
Milestone | Key Activities | Risk Control |
| Structural | Bolt-free main beam connections | Reduced vibration-induced loosening |
| Electrical | VFD-controlled winch trolley | Soft-start prevents ore spillage |
| Testing | Load test at 31.5t (125% capacity) | Strain gauges verified <0.05% deflection |
| Training | Portuguese-language VR safety simulations | Reduced operator error by 40% |
Project Outcomes
The customer was extremely satisfied with the Sinoko crane. After using it for one year, they provided the following feedback:
Efficiency:
Loading cycle time reduced from 24 to 15 minutes
Throughput increased to 280 t/h (22% gain)
Reliability:
Zero breakdowns in first 8 months of operation
98.7% uptime vs. former system's 76%
Environmental:
Ore spillage cut to 3.8% (meeting ISO 14001)
Energy consumption lowered by 18% via regenerative VFDs
Client Benefits:
Cost Savings: $310,000/year in reduced ore loss & maintenance
Safety: 100% compliance with NR-12 Brazilian machinery regulations
Application Areas
The Sinoko Grab Bucket Bridge Crane has a wide range of applications. It is also applicable to the following industries:
Sector | Material Handling | Value Proposition |
Agriculture | Grain/soybean silos | Dust-proof electrical systems |
Port Terminals | Coal/fertilizer bulk carriers | 20m lifting height for ship holds |
Recycling | Scrap metal processing | Abrasion-resistant bucket design |
Sinoko Crane has been deeply involved in the crane industry and has received numerous positive feedbacks from customers. We will always keep the customers' interests in mind and provide them with the most satisfactory solutions and products!
The QZ type grab bridge crane can efficiently handle bulk materials. If your site requires larger-span open-air operations, it is recommended to pair it with a double-girder grab gantry crane. This type of crane has a larger span and is specifically designed for metallurgical and port open-air storage yards, with better wind and rain protection performance.
At Sinokocrane, Grab Gantry Crane is available for Waste Disposal. It is specialized in manufacturing grab gantry cranes and one stop shop for all your material handling solution needs.
Learn More Get a QuoteScrap Handling Crane - Sinokocrane is specialized in manufacturing Scrap Handling Crane, which used to load scrap into buckets and scrap removal. Find here lots of Scrap Handling Cranes with different models.
Learn More Get a QuoteLooking for Steel Scrap Gantry Crane supplier & Manufacturer Company in China? Henan Sinoko Cranes Co. Ltd specializes in Steel Scrap Gantry Crane supply their products all over the world. Get free solutions.
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