In the modern industrial system, the continuous and efficient transportation of bulk materials is the foundation for ensuring production efficiency. Steel cord conveyor belts have now become the primary choice for long-distance and heavy-load transportation scenarios.
I. Mining: From Underground to Open-pit
1. Underground Transportation:
This is a key application scenario for steel cord conveyor belts. In underground environments, conveyor belts often need to operate safely in high-dust conditions. Steel cord conveyor belts are added with flame retardants and anti-static agents, which can quickly self-extinguish when friction or electrical sparks occur, preventing the spread of sparks.
Conveyor belts often need to handle height differences of several hundred meters. Ordinary fabric core conveyor belts have a large elongation rate and low joint strength, often unable to overcome this problem. The elongation rate of steel cord conveyor belts is controlled below 0.2%, ensuring the safety of long-distance lifting.
2. Open-pit Mines
In this scenario, the requirements for conveyor belts are higher resistance to impact and aging. With the high toughness of its skeleton, steel cord conveyor belts can effectively absorb the impact of falling rocks from heights without damage. Moreover, steel cord conveyor belts can operate continuously in environments as low as -40°C, demonstrating strong environmental adaptability.
II. Port Terminals: Channels for Bulk Cargo Logistics
1. Unloading Operations
This scenario requires conveyor belts to have extremely high tensile strength and wear resistance. The strength of steel cord conveyor belts ranges from ST630 to ST10000, capable of withstanding repeated load impacts. The environment at ports is often severely corrosive due to salt spray, and the outer layer of steel cord conveyor belts has a corrosion-resistant coating, which can extend the service life of the conveyor belt.
2. Tubular Conveying
In some ports with strict environmental requirements, tubular conveyor belts can completely enclose the materials, achieving closed transportation and avoiding dust flying and material spillage during transportation. Currently, tubular transportation has become one of the rapidly developing important directions in recent years.
III. Power Industry: Ensuring Fuel Supply
The coal conveying system of thermal power plants is a traditional strong suit for steel cord conveyor belts.
1. Long-distance coal conveying corridors
Steel cord conveyor belts have a low elongation rate, so the tensioning devices between each conveyor belt do not need to be adjusted frequently, significantly reducing maintenance work. At the same time, thermal power plants have extremely strict fire prevention requirements, and steel cord conveyor belts will not become a medium for fire spread in case of fire.
2. Enclosed coal bunkers and coal blending systems
Conveyor belts need to complete multi-point unloading and repeated operation in a limited space. Steel cord conveyor belts have fatigue resistance and can withstand frequent starts and stops and reverse operation. The joints will not be damaged due to repeated bending. The service life of high-quality steel cord conveyor belts can reach more than five years.
IV. Building Materials and Cement: High Temperature and Heavy Load Challenges
1. Limestone transportation
Limestone from the mine, after being crushed by the crusher, is transported using steel cord conveyor belts. The anti-impact performance of steel cord conveyor belts can effectively prevent sharp stones from piercing the base belt, and the wear-resistant covering rubber on the base belt delays surface wear.
2. Clinker conveying
Clinker conveying means that steel cord conveyor belts face high-temperature challenges. The covering rubber of ordinary conveyor belts will accelerate aging and cracking at high temperatures. Steel cord conveyor belts can use EPDM covering rubber, which can withstand temperatures above 200°C and still maintain the flexibility and strength of the belt body, ensuring dimensional stability in high-temperature environments.
V. Metallurgical Industry: Dual Challenges of High Temperature and Abrasion
1. Sintered ore conveying
This is a typical extreme working condition. Although the temperature of sintered ore can drop below 150°C after cooling, it still has strong abrasiveness and irregular shapes. Steel cord conveyor belts can form a carbonized protective layer when in brief contact with the material, slowing down the heat transfer to the interior. At the same time, the high strength of steel cord conveyor belts ensures a safety factor under heavy load conditions.
2. Blast furnace charging system
The conveyor belts in the blast furnace charging system must operate without failure because a blast furnace shutdown will result in huge losses. Steel cord conveyor belts can conduct regular non-destructive testing of the wire rope joints online to achieve preventive maintenance and significantly reduce the risk of unplanned shutdowns.
In addition to the above-mentioned fields, steel cord conveyor belts are also widely used in the chemical, papermaking, steel, construction and other industries where long-distance, large-volume and heavy-load bulk material transportation is required.
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