20 + 5 Ton EOT Crane for Copper Refinery Operation

Copper refinery operations involve complex, high-intensity processes that require precise, নিরাপদ, and efficient material handling—from raw copper ore and anode plates to electrolytic cells and finished cathode copper. দ্য 20 + 5 Ton Double Trolley Electric Overhead Traveling (ইওটি) Crane is specifically engineered to meet the rigorous demands of copper refineries, addressing the industry’s unique challenges such as high temperatures, ক্ষয়কারী পরিবেশ, mixed-load lifting, and continuous operation requirements. This case study details the product overview, core features, technical parameters, on-site applications, and frequently asked questions (FAQ) of the 20 + 5 Ton Double Trolley EOT Crane in copper refinery operations, demonstrating its value in optimizing productivity, enhancing safety, and reducing operational costs.

পণ্য ওভারভিউ

দ্য 20 + 5 Ton Double Trolley EOT Crane is a heavy-duty overhead lifting equipment designed with two independent trolleys (main trolley: 20 টন, auxiliary trolley: 5 টন) mounted on a double-girder bridge, enabling simultaneous or separate operation of the two trolleys to handle mixed loads efficiently. Developed in compliance with international standards such as FEM (Europe), থেকে (Germany), এবং আইএসও, this crane is customized for the harsh working conditions of copper refineries, including high ambient temperatures, corrosive fumes from electrolytic processes, and heavy-duty cyclic operations. It integrates advanced electrical and mechanical components to ensure stable performance, সুনির্দিষ্ট অবস্থান, এবং দীর্ঘ সেবা জীবন, making it an indispensable material handling solution for copper smelting, electrolysis, and finishing processes.

Unlike single-trolley ইওটি ক্রেন, the double-trolley design of this model eliminates the need for multiple cranes in the same bay, optimizing workshop space utilization and reducing equipment investment. The main trolley is dedicated to lifting heavy loads such as electrolytic cells, copper ingots, and large equipment, while the auxiliary trolley handles lighter loads including anode plates, cathode plates, and maintenance tools—realizing flexible and efficient load distribution in copper refinery workflows.

20 + 5 Ton EOT Crane for Copper Refinery Operation Core Features

EOT Crane for electrolytic copper

Tailored to the specific needs of copper refinery operations, দ 20 + 5 Ton Double Trolley EOT Crane boasts the following core features, ensuring reliability, সুরক্ষা, and adaptability in harsh industrial environments:

• 1. Corrosion and High-Temperature Resistance: The crane’s main structure (bridge, trolleys, and end trucks) is made of high-quality carbon steel with shot-blasting treatment and anti-corrosion coating (two coats of anti-rust primer + two coats of anti-corrosive enamel), effectively resisting corrosion from sulfuric acid fumes and other chemical substances in electrolytic refining processes. Key components such as motors and electrical enclosures adopt IP55 protection class and F-class insulation, with over-temperature protection set at 170℃, ensuring stable operation in ambient temperatures ranging from -25℃ to 40℃.
• 2. Double-Trolley Synergistic Operation: The two independent trolleys can operate simultaneously or separately, with anti-collision devices installed to prevent interference between them. This design allows for parallel handling of heavy and light loads—for example, the main trolley lifts an electrolytic cell while the auxiliary trolley transports anode plates to the cell, significantly reducing workflow downtime and improving operational efficiency.
• 3. Precise and Stable Control: Equipped with advanced variable frequency drive (ভিএফডি) control systems and Schneider electrical components, the crane achieves stepless speed regulation for lifting, ট্রলি ভ্রমণ, and bridge travel. This ensures smooth start-up and braking, avoiding load sway during transportation—critical for precise positioning of electrolytic cells and fragile cathode plates, reducing material damage and operational risks.
• 4. Enhanced Safety Protection: The crane is equipped with a comprehensive safety protection system, ওভারলোড সুরক্ষা সহ (load limiter), lifting height limit switch, travel limit switch, জরুরী স্টপ বোতাম, and anti-collision device. The overload protection system automatically cuts off power when the load exceeds the rated capacity, while the emergency stop switch can halt all operations immediately in case of emergencies, কর্মীদের এবং সরঞ্জামের নিরাপত্তা নিশ্চিত করা. উপরন্তু, programmable lifting limit switches further enhance operational safety by preventing overtravel of the hoist.
• 5. Low Maintenance and Energy Efficiency: Adopting ABM/NORD/SEW three-in-one motors (integrating motor, গিয়ারবক্স, and brake) and hard tooth surface reducers, the crane features high reliability, কম শব্দ, and low maintenance requirements. The optimized structural design reduces dead weight and wheel pressure, lowering the workshop’s civil engineering costs, while the energy-saving motor design reduces total power consumption by 30% compared to conventional cranes, achieving energy conservation and emission reduction goals.
• 6. কাস্টমাইজযোগ্য ডিজাইন: The crane’s span, উত্তোলন উচ্চতা, নিয়ন্ত্রণ মোড (দুল নিয়ন্ত্রণ, radio remote control, বা কেবিন নিয়ন্ত্রণ), and auxiliary devices can be customized according to the specific layout and workflow of the copper refinery. যেমন, it can be adapted to bays with long lengths (such as 192 মিটার) by adjusting the bridge design and runway rails, ensuring optimal coverage of the working area.

প্রযুক্তিগত পরামিতি

The technical parameters of the 20 + 5 Ton Double Trolley EOT Crane are optimized for copper refinery operations, with the following standard specifications (customizable based on on-site requirements):

20 + 5 Ton Double Trolley EOT Crane Application in Copper Refinery Operation

Double Trolley EOT Crane

Raw Material and Anode Plate Handling

In the initial stage of copper refining, raw copper ore or blister copper ingots (each weighing 15 - 20 টন) need to be transported to smelting furnaces. The main trolley of the crane lifts these heavy raw materials stably and transports them to the designated smelting station, ensuring continuous feeding of the smelting process. After smelting, the molten copper is cast into anode plates (each weighing 3 - 5 টন), which are then lifted and transported by the auxiliary trolley to the electrolytic cell area. The double-trolley design allows for simultaneous handling of raw materials and anode plates, reducing waiting time and improving production efficiency.

Electrolytic Refining Process

Electrolytic refining is the core process of copper refinery, requiring precise handling of electrolytic cells and cathode plates. The main trolley (20 টন) is used to lift and position electrolytic cells (weighing 18 - 20 টন) into the electrolytic tank, ensuring accurate alignment to avoid electrolyte leakage. During the electrolysis process, the auxiliary trolley (5 টন) transports cathode plates (weighing 2 - 4 টন) to the electrolytic cells and retrieves them after the electrolysis cycle (সাধারণত 7 - 10 দিন). The VFD control system of the crane ensures smooth lifting and movement of the cathode plates, preventing damage to the plates and ensuring the quality of electrolytic copper. উপরন্তু, the crane can be equipped with a special spreader to clamp multiple cathode plates at once, further improving operational efficiency.

Finished Cathode Copper Handling and Packaging

After electrolytic refining, the cathode plates are processed into finished cathode copper (each weighing 5 - 8 টন) or copper ingots. The auxiliary trolley lifts the finished cathode copper to the cleaning and inspection area, and after inspection, the main trolley transports the qualified finished products to the packaging station or warehouse for stacking and storage. The crane’s precise positioning function ensures that the finished products are stacked neatly, reducing damage during storage and transportation, and facilitating subsequent loading and unloading operations.

Equipment Maintenance and Overhaul

Copper refinery equipment such as smelting furnaces, electrolytic tanks, and pumps require regular maintenance and overhaul, which involves lifting heavy components (such as furnace linings, pump casings, and motor assemblies) weighing 10 - 20 টন. The main trolley of the crane lifts these heavy equipment components stably, while the auxiliary trolley transports maintenance tools and replacement parts to the maintenance site, providing convenient conditions for equipment maintenance. The crane’s flexible operation allows it to access narrow areas of the workshop, ensuring smooth progress of maintenance work. In cases where existing cranes need to be replaced, the crane can be installed after dismantling the old equipment, with the supplier conducting on-site measurements to ensure compatibility with the existing runway rails and bus bar system.

On-Site Application Case Feedback

A large copper refinery in Asia installed 3 sets of 20 + 5 Ton Double Trolley EOT Cranes in its electrolytic refining workshop (স্প্যান: 22.8 মি, উত্তোলন উচ্চতা: 12 মি) in 2025. Before installation, the workshop relied on two single-trolley cranes for material handling, resulting in low efficiency and frequent equipment failures due to harsh working conditions. After installing the 20 + 5 Ton Double Trolley EOT Cranes, the workshop’s material handling efficiency increased by 40%, the failure rate of lifting equipment decreased by 70%, and the number of operational accidents related to load handling was reduced to zero. The crane’s corrosion resistance and high-temperature resistance ensured stable operation in the corrosive and high-temperature environment of the electrolytic workshop, with an average daily operation time of 16 ঘন্টা (continuous operation) and no major maintenance required within one year, significantly reducing operational and maintenance costs for the refinery.