With the rapid development of the new energy industry, overhaul slag generated during battery production and recycling has become a critical industrial solid waste requiring urgent treatment. How can we achieve resource utilization of overhaul slag, reduce environmental pollution, and enhance economic value? This article provides an in-depth analysis of the core objectives and processing methods for overhaul slag grinding, along with a recommendation for the ideal grinding equipment: Guilin Hongcheng’s HLM Vertical Roller Mill.
Resource Recycling
Overhaul slag contains metal oxides, graphite, and other components. Through grinding, it can be transformed into ultrafine powder for use in building materials (e.g., concrete admixtures), metallurgical additives, or eco-friendly materials, turning waste into valuable resources.
Environmental Compliance
Grinding significantly reduces the storage volume of overhaul slag, preventing heavy metal contamination of soil and groundwater. This aligns with national policies advocating the "reduction, recycling, and harmless treatment" of industrial solid waste.
Economic Benefits
The market demand for recycled micropowder continues to grow. For example, in the cement and concrete industries, micropowder can replace traditional raw materials, lowering production costs and generating additional revenue.
The grinding process requires systematic treatment, with key steps including:
Pre-Treatment Stage
Sorting and Impurity Removal: Eliminate metal fragments, plastics, and other impurities to ensure raw material purity.
Crushing and Drying: Reduce material size to below 20mm using crushers and dry materials (moisture ≤15%) to improve grinding efficiency.
Grinding and Classification
Vertical Grinding: Utilize vertical roller mills for efficient grinding, leveraging the material-bed grinding principle to reduce energy consumption and metal contamination risks.
Dynamic Classification: Achieve precise particle size control (400-2500 mesh) through built-in classifiers to meet diverse industry requirements.
Collection and Storage
Pulse dust collectors ensure efficient powder recovery with no dust leakage, complying with environmental standards.
To address the high hardness and complex composition of overhaul slag, equipment must meet the following criteria:
High Efficiency and Energy Savings
Vertical roller mills reduce power consumption by 40%-50% compared to traditional ball mills, with higher single-unit output for large-scale production.
Wear Resistance
High-chromium alloy rollers and grinding discs offer a service life exceeding 8,000 hours, minimizing downtime.
Eco-Friendly and Smart Operation
Fully enclosed negative-pressure systems and PLC automation enable remote control and real-time monitoring, reducing labor costs.
Versatility
Capable of processing materials with moisture ≤15% and adapting to compositional fluctuations in overhaul slag.
As a professional enterprise in China’s powder equipment industry, Guilin Hongcheng’s HLM Vertical Roller Mill stands out for overhaul slag grinding with the following advantages:
Technical Excellence
Integrated Design: Combines crushing, drying, grinding, and classification into one system, reducing footprint by 50% compared to ball mills.
Consistent Quality: Produces uniformly distributed, high-fluidity powder with minimal metal contamination, ideal for premium building materials.
Low Operational Costs
Hydraulic roller maintenance and reversible liners extend service life and simplify upkeep.
High output with low energy consumption, further reducing costs under off-peak electricity pricing.
Environmental Compliance
Dust collection efficiency ≥99% and noise levels below industry standards ensure compliance with environmental regulations.
Guilin Hongcheng has delivered solid waste grinding solutions globally, covering slag, steel slag, and desulfurization gypsum. For overhaul slag projects, we offer:
Customized Solutions: Tailored production line layouts based on material properties and capacity needs.
End-to-End Services: Installation, commissioning, training, and lifelong technical support for seamless operation.
Act Now to Embrace Sustainable Production!
For more details on overhaul slag grinding technology or equipment selection, contact Guilin Hongcheng’s technical team today.
