In the construction and building materials industry, Ceramsite aggregate rotary kiln—with high strength, lightweight, permeability, and thermal insulation—are core raw materials for new building materials. Traditional production equipment suffers from uneven firing, insufficient strength, and high energy consumption. Our rotary kilns for building ceramic aggregates, designed specifically for this purpose, use precise temperature control, multi-raw material adaptability, and full-process energy-saving technologies to stably produce high-quality ceramic aggregates, meeting diverse construction industry needs.
1. Core Technologies: Ensuring High-Quality Ceramsite aggregate Production
To meet strict requirements for aggregate strength, porosity, and color uniformity, the equipment adopts three core technologies to overcome traditional bottlenecks:
Multi-Raw Material Adaptability & Solid Waste Utilization: Compatible with clay, shale, fly ash, construction debris, and ceramic waste; adjusts parameters based on raw materials. Supports 30%-50% solid waste incorporation, reducing costs and complying with green building policies. Produced aggregates meet GB/T 35164-2017 (compressive strength ≥10MPa, water absorption ≤15%).
Precision Temperature Control & Quality Assurance: Three kiln sections with independent PLC control: preheating/drying (200-500°C), firing (1100-1250°C), holding/cooling (800-500°C). Burners and infrared thermometers control temperature fluctuations within ±10°C, avoiding over/under-burning. Heat-resistant kiln lining (high-alumina bricks + mullite coating) resists ≥1300°C, service life 4-6 years.
Full-Process Energy Saving: Tiered flue gas waste heat recovery (preheats billets to 400-500°C, dries raw materials to ≤15% moisture), saving over 30% energy. Silica-aluminum insulation layer keeps kiln surface temperature ≤50°C, reducing heat loss and improving workshop conditions.
2. Application Scenarios: Covering Construction Ceramsite aggregate Needs
Customizes aggregates by property for various construction scenarios, with flexible capacity options:
Permeable Pavement Aggregates: 5-10mm porous aggregates (porosity 20%-30%, water permeability ≥1.0×10⁻³m/s) for urban sidewalks, park trails, and parking lots, alleviating waterlogging.
Thermal Insulation Aggregates: Lightweight (bulk density ≤800 kg/m³, thermal conductivity ≤0.2 W/(m・K)), replacing perlite for insulation mortar, partition boards, and exterior wall insulation.
Specialty Aggregates: Highly wear-resistant (wear rate ≤3%) and colored aggregates for factory floors and landscape pavements, balancing functionality and aesthetics.
Capacity Compatibility: Small-medium lines (50,000-200,000 tons/year); large bases (500,000-2,000,000 tons/year, multi-line parallel); existing kiln upgrades (adding pelletizing, temperature control, and waste heat systems).
3. Operational Logic: Raw Material Pretreatment - Firing - Finished Product
Six-step process ensuring stable production:
Raw Material Pretreatment: Crushed to ≤3mm, impurities removed, proportioned/mixed (moisture 18%-22%), pelletized into 5-20mm green bodies (strength ≥2MPa).
Preheating & Drying: Vertical preheater uses flue gas to heat green bodies to 400-500°C (moisture ≤3%) for subsequent firing.
Kiln Firing: Inclined (3%-5%) kiln (0.5-2 rpm adjustable); burners adjust fuel based on raw materials, maintaining 1100-1250°C in firing section.
Cooling & Screening: Aggregates cooled to ≤100°C, multi-layer screened by particle size; unqualified products reused, qualified ones sent to finished bins.
4. Service Guarantee: Full-Cycle Support
Customized Solutions: Based on raw materials, aggregate requirements, and capacity; provides pilot tests to verify mass production quality.
Installation & Commissioning: Professional on-site assembly; 168-hour continuous test run to optimize parameters for stable production.
Training & Maintenance: Operator training (operation, parameter adjustment, troubleshooting) for independent operation.
Our Ceramsite aggregate rotary kiln promotes green building transformation, enabling solid waste recycling and high-performance aggregate production. For raw material process parameters, equipment costs, or case studies, contact us for tailored solutions.
