Core Viewpoint - The successful operation of a new high-power underground fan designed by the Kunming Nonferrous Metallurgy Design Institute of China Aluminum International Corporation marks a significant advancement in mining ventilation technology, enhancing efficiency and safety in non-coal mines [1] Group 1: Equipment and Technology - The newly launched fan operates at a power of 3150 kilowatts, making it the first ultra-high-power axial flow fan for underground mining in China and the largest power mining fan in non-coal mines [1] - The fan utilizes blade integral adjustment and high-pressure variable frequency control technology, which significantly improves the overall efficiency and reduces actual power consumption [1] Group 2: Operational Efficiency - The number of fans in the North return air system of Yuxi Mining has been reduced from 9 to 1, while the return air capacity has increased from 260 cubic meters per second to a maximum of 530 cubic meters per second [1] - This upgrade addresses challenges related to the reliability of equipment during multi-fan operations, low reliability of the electrical control system, and management difficulties, thereby enhancing the performance of the mine's ventilation system [1] Group 3: Safety and Disaster Prevention - The new fan technology provides a solid technical guarantee for the safety and disaster prevention capabilities of the mine, significantly improving the overall safety standards in mining operations [1]