Liming Heavy Industry Fuels Yuguang Group’s Green Transformation, Shining as the Industry’s Lighthouse

On January 5th, the program Hotline 12 on CCTV-12 featured an in-depth report titled Jiyuan, Henan: Turning Waste into Wealth, a Modern Legend in the Hometown of Yu the Fool, covering Yuguang Group’s green transformation practices of promoting resource recycling and exploring the development of non-ferrous metal new materials through technological innovation.

National Benchmark Project: From Resource Consumption to Circular Efficiency

Behind every industrial transformation lies the strong support of core technologies. As a national green benchmark project with a total investment of nearly 2 billion yuan, the technical renovation project for recycled lead resource recycling and high-efficiency clean production of Yuguang Group undertakes the transformative mission of shifting from resource dependence to circular efficiency. Adopting the process of oxygen bottom-blown smelting — direct reduction of liquid high-lead slag, the project processes 1 million tonnes of waste batteries annually, accounting for nearly one-fifth of the national total capacity. It achieves 30% energy saving and 50% emission reduction, setting a new benchmark for the green upgrading of the industry.

In this industrial legend of green transformation, Liming Heavy Industry’s LM series vertical coal mill, as the core supporting equipment for industrial furnaces in the smelting process, provides crucial support for the project’s energy supply with its stable and high-efficiency pulverized coal preparation capacity, emerging as a technological highlight in the circular economy industry chain.

Green Energy Engine: High-Efficiency Pulverized Coal System Fortifies the Smelting Process

As a critical energy supply link for oxygen-enriched bottom-blown smelting, the stability of pulverized coal preparation, fineness control and feeding accuracy directly affect smelting efficiency and energy consumption levels. Relying on its technical accumulation in the grinding equipment field, Liming Heavy Industry takes green, intelligent and efficient as its design orientation, providing a customized pulverized coal preparation solution for the project. It implements lean control throughout the entire process from design, manufacturing to commissioning, and accurately meets the high-end requirements of Yuguang Group.

Green Core: Dual Protection for Safety and Environmental Compliance

Regenerated lead smelting operates in a high-temperature, oxygen-enriched environment, imposing extremely high requirements on the explosion-proof and safety control of the pulverized coal preparation system. Targeting the special working conditions of high dust and high volatile content in lead smelting, Liming Heavy Industry’s LM series vertical coal mill has established a triple safety guarantee system.

Five-level Explosion-proof System

In response to the characteristics of high dust and high volatile content in lead smelting, the system integrates CO-O₂ online monitoring and nitrogen inerting protection, dynamically regulating the oxygen content inside the mill to eliminate the risk of combustion and explosion from the source.

Intelligent Emergency Response Mechanism

Equipped with a dust concentration early warning and automatic spray explosion suppression system, it can trigger protective measures in milliseconds, forming a closed-loop management of monitoring - early warning - disposal.

Fully Sealed Negative Pressure Operation

The dust emission concentration is stably kept below 10mg/m³, helping the project achieve ultra-low emission.

Efficient Synergy: Full-process Escort for Project Implementation

Pulverized coal preparation is regarded as the lifeline of the smelting process. The technical team of Liming Heavy Industry has been involved in the whole process from the project design stage, comprehensively considering on-site layout and process connection, and adopting a modular pre-assembly design to significantly shorten the installation and commissioning cycle.

Intelligent Interconnection: From Standalone Equipment to System Integration

Liming’s technical team conducted in-depth coordination with Yuguang Group to achieve seamless communication between the LM vertical mill control system and the plant’s central control system. Key parameters such as pulverized coal fineness, humidity and supply volume are integrated into the smelting big data model in real time, enabling adaptive interconnection and regulation based on raw material changes and furnace working conditions, and driving production control to shift from experience-driven to precision intelligence.

Based on real-time online monitoring and diagnosis, Liming’s technical support team provides predictive maintenance recommendations, minimizing the risk of unplanned downtime and ensuring the continuous, stable and efficient operation of production.

Sustained Services: From Delivery to Long-term Value Co-creation

Liming Heavy Industry has established an exclusive service file for Yuguang Group’s project, recording and gradually improving maintenance, adjustment and optimization data to form a sustainable operation support system.

In response to Yuguang Group’s new demands for process upgrading and capacity adjustment, Liming provides flexible technical upgrade paths, ensuring that the LM vertical mill system always maintains high-efficiency adaptation to the main process and continuously unlocks equipment potential.

Guarding the Green Foundation of High-Quality Development, Six Years On

Since the first ignition and commissioning of the bottom-blown oxidation furnace at Yuguang Group in June 2020, the LM vertical coal mill system by Liming Heavy Industry has operated continuously and stably for nearly six years. Its full-cycle performance has consistently exceeded the design standards, and with its reliable operation day in and day out, it has guarded this green flame ignited in the hometown of Yu the Fool.

From the barren hills and slopes of the past to a national circular economy demonstration zone, from technological breakthroughs to ecological win-win outcomes, the Yuguang Group project has long transcended the scope of a single project and become a vivid microcosm of China’s industrial green transformation. Liming Heavy Industry is honored to participate in this era-defining transformation — with every precise energy supply and every stable operation, it paints a vivid green foundation for high-quality industrial development and embodies the responsibilities and missions of manufacturing enterprises in the new era.