Project Quick Facts

• Project Location: Ya’an City, Sichuan Province, China

• Commissioning Date: August 3, 2026

• Input Raw Material: Mixed Construction & Demolition (C&D) Waste (Concrete blocks, red bricks, soil, rebar, mortar, and light plastic contaminants)

• Primary System Modules: Heavy Feeder Hopper, Multi-stage Conveyor Network, Vibrating Screen, Guoxin Air Classifier (Wind Sifter), Overhead Magnetic Separator, Trommel Screen, Integrated Pulse Dust Collection System

• Target Output Products: High-purity fine recycled sand (0–10mm), coarse recycled aggregates (10–30mm+), scrap metal, and light RDF fraction.

1. Project Background & Technical Challenges

With rapid urban renewal and infrastructure development in Ya’an, Sichuan, regional environmental regulations require sustainable management of local construction and demolition (C&D) waste.

The client faced significant challenges in processing raw demolition waste:

• Complex Material Mix: The incoming waste stream contained high-density concrete slabs, crushed red bricks, soil fines, tangled steel rebars, and light impurities (woven plastic bags, greenhouse film, and wood debris).

• Environmental & Dust Compliance: Strict local emissions standards required the operational plant to operate entirely indoors, with zero ambient dust leakage.

• Purity Requirements: Downstream brick-making and concrete batching applications demanded clean, debris-free recycled aggregates with near-100% removal of light plastics and ferrous metals.

Guoxin Group engineered a customized, fully enclosed C&D waste sorting line to transform raw urban liabilities into clean, market-ready building aggregates.

2. Integrated Processing Sequence & Plant Workflow

The Ya’an facility utilizes an automated multi-stage separation sequence designed for continuous high-throughput operation:

Key Engineering Stages:

1.Heavy Feeder Hopper & Primary Transport:

Raw waste loaded from outdoor stockpiles enters the enclosed workshop via heavy-duty inclined trough conveyors equipped with side guards to prevent spillage.

2.Heavy-Duty Trommel Screen (Rotary Sizing):

The raw C&D waste is fed into a heavy-duty rotary trommel screen for primary particle size separation. As the internal drum rotates, it tumbles the material to break up agglomerated waste                clumps, efficiently screening out fine soil, sand, and small organics (undersize fraction) while directing oversized concrete and brick rubble smoothly toward downstream air separation and              metal extraction.

3. Particle Size Classification (Vibrating Screen):

High-frequency vibrating screens classify crushed waste by particle size, isolating soil fines early in the process to optimize downstream sorting efficiency.

4. Pneumatic Density Separation (Guoxin Wind Sifter):

Light combustible fractions (plastics, film, paper, and textiles) are lifted out of the material stream using targeted airflow within the sealed Guoxin Air Classifier, leaving dense aggregate stone untouched.

5. Automated Ferrous Scrap Extraction:

Overhead cross-belt magnetic separators continuously pull rebar, wire mesh, and iron fragments off the main conveyor, protecting downstream processing and generating pure scrap metal revenue.

6. Environmental Dust Control System:

A heavy-duty green pulse bag dust collector with high-capacity air extraction ducts directly monitors all feeding chutes and transfer points, guaranteeing a clean, dust-free indoor working environment.

3. Plant Performance & Equipment Breakdown

4. Final Recycled Resource Outputs

The Ya’an project successfully achieves complete C&D waste resource utilization:

• Clean Recycled Fine Sand (0–10mm): Uniformly discharged onto clean indoor storage piles, ideal for road base material, non-load-bearing masonry, and eco-friendly paving bricks.

• Coarse Recycled Aggregates (10–30mm+): High-density aggregate free of light film or wood fragments, ready for road foundation backfilling and concrete substitute applications.

• Scrap Metal Fraction: High-purity iron and rebar recovered directly for local steel plant recycling.

• Separated Light Fraction: Compacted light plastics diverted for RDF (Refuse-Derived Fuel) processing or controlled disposal.

5. Client Value & Environmental Impact

By partnering with Guoxin Machinery, the Ya’an project achieved key operational milestones:

• 25% Faster Commissioning: Pre-engineered modular conveyors and standardized steel support frames reduced structural alignment time during installation.

• Turnkey Compliance: Fully met local environmental noise and dust emission benchmarks on the first day of trial runs.

• High ROI Transformation: Converted low-value urban debris into premium commercial aggregate products for local construction markets.

Need a Customized C&D Waste Sorting Line Layout?

Planning a municipal C&D waste recovery facility or building aggregate recycling plant? Guoxin Machinery provides end-to-end EPC solutions, including 3D plant layout simulation, equipment manufacturing, and on-site commissioning.

 Contact: Eve@guoxinmachinery.com