https://www.magicmag-tech.com/Permanent-Magnetic-Coupling-Innovates-Mining-Transmission-Technology.html
[Shanghai, July 7, 2025] As the global mining industry transforms into a high-efficiency, low-carbon industry, SHANGHAI GAOLV MAGNETIC POWER TECHNOLOGY CO.,LTD. has demonstrated outstanding performance advantages in the mining industry with its self-developed Shanghai Gaolv Permanent Magnetic Couplings. The following real cases from first-line mines witness how this technology reshapes the industry transmission standard.
Case 1: Shaanxi Yulin Coal Mine—A belt conveyor revolution that reduces operation and maintenance costs by 50%
Customer pain point: A 10-million-ton coal mine in Shaanxi uses a drum-tooth coupling for its belt conveyor system. Due to the dusty conditions in the underground, frequent starts and stops, the coupling lubricant needs to be replaced and the gears need to be repaired for wear and tear every quarter, resulting in an annual maintenance cost of more than RMB 400,000 yuan. And many times due to coupling failure caused belt downtime, affecting the efficiency of raw coal transportation.
SHANGHAI Gaolv’s solution: In June 2024, the coupling was transformed into SHANGHAI Gaolv permanent magnetic coupling, whose non-contact magnetic drive completely eliminates mechanical wear. Operating data shows:
● Startup current dropped from 480A to 370A, a 23% reduction;
● Vibration value dropped from 4.5mm/s to 2.3mm/s, and reducer gear life was extended by 2 times;
● Maintenance-free for the whole year, directly saving 220,000 RMB in maintenance costs, and reducing belt downtime by 80%.
Customer comment: "In the past, we had to arrange coupling maintenance every month, but now we have not dismantled and inspected it for three years. The most pleasant surprise is that the belt tension is more stable, and the belt tearing accident caused by coupling failure last year has completely disappeared." -- Wang, chief of the mine's mechanical and electrical section
Technological breakthrough: non-contact transmission reshapes the reliability of mining equipment
Relying on the successful experience of the Shaanxi case, the multi-cylinder structural design of the Shanghai Gaolv permanent magnetic coupling has become the standard for transmission in the mining industry. The air gap isolation technology between the conductor ring and the carrier ring has reduced the failure rate of the crusher system in the Hulunbeier open-pit mine in Inner Mongolia by 70%, and verified the stable performance under the low-temperature environment of -35℃.
Case 2: Jiangxi Xinyu Iron & Steel Group—an energy-saving benchmark with an annual carbon reduction of 5,652 tons
Policy background: In response to the “Iron and Steel Industry Carbon Peak Implementation Plan,” the group was required to reduce its energy consumption per ton of steel by 5% by 2025. In October 2023, its converter dedusting fan system was retrofitted with a Shanghai Gaolv permanent magnet coupling.
Energy-saving data:
● Transmission efficiency increased from 82% of the original hydraulic coupling to 96.5%;
● Annual power savings of 2.82 million kWh, equivalent to 2,261 tons of standard coal, reducing carbon emissions by 5,652 tons;
● Motor operating temperature reduced from 75°C to 58°C, bearing life extended by 3 times.
Economic benefits: only electricity cost savings, the annual income of 1.69 million yuan, the payback period of 14 months. The project was selected as a demonstration case of energy-saving technology in Jiangxi Province in 2024.
Energy saving and efficiency: the core engine of mining industry's green transformation
Similar cases are also remarkable in the ball mill system of Tongling Copper Mine in Anhui Province—through the dynamic load adjustment of Shanghai Gaolv permanent magnetic coupling, the energy consumption of single equipment in the mine dropped by 18%, and the annual cost savings exceeded one million yuan, which has become a model of energy saving in the non-ferrous metal industry.
Environmental Adaptability: Stable Performance under Extreme Working Conditions
In the stone crushing production line of Panzhihua Iron Ore Mine in Sichuan Province, the Shanghai Gaolv permanent magnetic coupling withstood the double test of high temperature of 80℃ and metal debris. Its fully sealed design eliminates dust intrusion and extends the maintenance cycle from 1 month to 24 months compared with traditional couplings, which is called “maintenance-free mining tough guy” by field engineers.
[About Shanghai Gaolv]
As of 2025, Shanghai Gaolv permanent magnetic couplings have served 300 + mining projects nationwide, covering coal, iron and steel, non-ferrous and non-metallic mines, etc., and have cumulatively saved more than 120 million yuan in energy consumption and reduced 320,000 tons of carbon emissions for customers.
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