AAC (Autoclaved Aerated Concrete) block production lines -Sand aerated brick

الوصف

Autoclaved Aerated Concrete (AAC) Block Production System，Advanced Technology for Sustainable Building Materials。

Product Overview：

AAC blocks are lightweight, energy-efficient construction materials manufactured through precise blending of siliceous 

aggregates (sand) and calcareous binders (quicklime/cement), followed by autoclaving.     

 Key features:

Dry Density: 400-800 kg/m³

Thermal Conductivity: 0.11-0.16 W/mK

Compressive Strength: 1.0-10.0 MPa

Fire Rating: 4-6 hours (EN 1364-1 certified)

Raw Material Specifications：

Component                                       Technical Requirements                                   Standards

Sand                                                  SiOâ‚‚ ≥60%, Feâ‚‚O₃ ≤15%                                  EN 12620

QuicklimeActive            CaO ≥80%, MgO ≤2%, 0.08mm sieve residue ≤10%          ASTM C977

Cement                                           42.5R Ordinary Portland Cement                       GB175-1999

Gypsum                                           CaSOâ‚„·2Hâ‚‚O ≥85%, Pâ‚‚Oâ‚… ≤3%                           EN 13279-1

Core Production Process：

1.      Material Preparation

Sand Milling: Ball mill grinding to 80-100 mesh fineness

Binder Mixing: Lime-gypsum-cement dry grinding (4,000-6,000 cm²/g Blaine)

Slurry Control: Water-cement ratio 0.55-0.65

2.      Casting & Pre-Curing

Foaming Reaction:

Aluminum paste dosage: 0.02-0.08% by weight

Expansion ratio: 5:1 volumetric increase

Curing Parameters:

Temperature: 40-50°C，Duration: 2-3 hours。

3.      Cutting & Autoclaving

Wire Cutting System:

Tolerance: ±1.5mm (EN 771-4)

Capacity: 20-30 molds/hr

Autoclave Cycle:

Pressure: 1.2-1.5MPa

Temperature: 180-200°C

Duration: 12-14 hours

Equipment Configuration：

System                        Key Components

Raw Material：         Ball mill, Silo, Pneumatic conveyor

Mixing：                   Turbine mixer, Slurry pump

Molding                        Steel molds (600×400×250mm)

Cutting                        CNC wire cutter, Vacuum lifter

Curing                        2×21m autoclave, Steam generator

Technical Specifications：

Parameter：                          Specification

Annual Capacity：                 50,000-300,000 m³

Block Dimensions：           600(L)×100-300(W)×200-300(H)mm

Energy Consumption：    25-35 kWh/m³

Water Recycling：           ≥90% closed-loop system

Quality Control：

XRF Analysis: Raw material composition verification

SEM Testing: Tobermorite crystal structure validation

DIN 52612: Thermal insulation performance certification

ISO 679: Compressive strength testing

Environmental Benefits：

70% reduction in construction waste，50% lower COâ‚‚ emissions vs traditional concrete，100% recyclable production byproducts。

Certifications

CE Marking (EU Construction Products Regulation)

ISO 14001 Environmental Management

Green Building Council Certification