Slag grinding production line is a specialized system that processes metallurgical byproducts (such as blast furnace slag and steel slag) into high-value-added slag fine powder through drying, grinding, and separation processes.
Slag (blast furnace slag, steel slag, etc.) is a byproduct of the metallurgical industry. Traditional storage not only occupies land but also pollutes the environment. Using a slag grinding line, it is processed into fine slag powder (specific surface area ≥420 m²/kg), which can be widely used in:
• Cement admixtures: Replace 30%-50% of cement clinker, reducing production costs.
• Concrete admixtures: Improve concrete strength, durability, and workability.
• Environmentally friendly building materials: Such as slag bricks and roadbed materials, which achieve resource recycling.
Industry Trends: With the advancement of the "Dual Carbon" policy, slag grinding lines have become a key investment direction for steel companies' transformation and upgrading due to their low energy consumption and high added value.
• Drying: The moisture content of the slag must be controlled to ≤1% (vertical mills can perform both drying and grinding).
• Iron Removal: A magnetic separator removes metallic impurities, protecting the grinding equipment.
| Equipment Type | Advantages | Applicable Scenarios |
| Vertical Roller Mill | Low power consumption (~40 kWh/t), small footprint | Medium- to large-scale production lines (annual output ≥ 300,000 tons) |
| Ball Mill | Low investment, easy maintenance | Small production lines or projects with limited budgets |
• Vertical Mill System: Integrated drying and grinding, high efficiency, but requiring a larger equipment investment.
• Ball Mill + Classifier: Requires a dryer and is suitable for applications requiring less fineness.
• High-Efficiency Bag Dust Collector: Dust emissions ≤ 20mg/m³, meeting environmental requirements.
• Automated Packaging System: Supports bulk and pallet shipments, reducing labor costs.
Industrial waste slag (blast furnace slag, steel slag, etc.) is converted into high-value-added slag powder, which can be used as a replacement for cement clinker or concrete admixtures, achieving a "waste-to-treasure" transformation and a comprehensive resource utilization rate exceeding 95%.
Slag powder has a stable market price of 120-180 yuan/ton, while processing costs are only 60-80 yuan/ton. The investment payback period is short (2-3 years), making it particularly suitable for supporting steel mill construction and extending industrial chain profits.
Advanced equipment such as vertical mills achieves dual-standard compliance, with power consumption as low as 40 kWh/t (30% less than traditional ball mills) and dust emissions ≤20 mg/m³, helping companies meet "dual carbon" emission reduction requirements.
The automated control system and modular design enable flexible configurations with an annual production capacity of 50,000 to 1 million tons. The equipment has a lifespan of over 80,000 hours, stable operation, and low maintenance costs.
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