Are you looking for an ultimate resource recovery solution for complex construction and mixed waste that not only sorts it cleanly but also produces high-value products?

Guoxin Machinery’s 800-ton/day construction and mixed waste sorting production line is designed specifically for urban solid waste comprehensive treatment centers, large industrial parks, and key “zero-waste city” projects. It aims to transform mixed construction waste, renovation waste, bulky waste, and some general industrial solid waste into high-purity recycled aggregates and standardized green fuel (RDF), achieving a revolutionary leap from waste accumulation to resource closed-loop management.

Compared to traditional processing lines that only produce low-value aggregates, our integrated closed-loop system of “intelligent sorting + RDF molding” not only maximizes the recovery of renewable resources such as metals and aggregates, but more importantly, it transforms the sorted combustibles (such as waste wood, waste plastics, and waste textiles) into high-calorific-value alternative fuels. This directly creates a second core revenue stream for the project besides aggregate sales, significantly shortening the investment payback period and completely solving the industry pain point of “waste becoming resources, but resources lacking a market.”

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1. Value Closed Loop: From Waste to Green Fuel

Stable resource recovery and substantial green benefits are far more important than simply processing volume. The core design concept of this system is to build an economic closed loop, ensuring that every ton of input finds the highest value and most stable outlet.

High-Quality RDF Fuel Output: The system crushes, dries, homogenizes, and finally pressurizes the sorted pure combustibles (wood blocks, textiles, plastics, etc.) into uniformly sized solid fuel rods (RDF/SRF). Its calorific value can reach 4000-5000 Kcal/kg, making it suitable for direct use in cement kilns, power plants, or centralized heating boilers as a substitute for coal.

Significant carbon reduction and economic benefits: Producing 1 ton of RDF fuel can reduce carbon dioxide emissions by approximately 1.5 tons and replace 0.5-0.7 tons of coal. For operators, selling RDF as a commodity opens up a new profit channel. According to practical cases, a production line with an annual output of 60,000 tons of RDF can effectively process regional industrial solid waste and significantly reduce local government expenditures on waste disposal.

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2. Core Component: Intelligent Sorting and Deep Impurity Removal System

Faced with extremely complex mixed waste, high-precision sorting is a prerequisite for ensuring the purity of downstream aggregates and the quality of RDF fuel. This system adopts a combined process of “multi-stage crushing + multi-layer screening + intelligent sorting” to ensure effective sorting.

AI Intelligent Robot Sorting: AI vision recognition robots are deployed at key sorting stations, enabling high-speed and precise grabbing of large pieces of wood, fabrics, hard plastics, etc., from mixed materials. Based on a massive sample database and intelligent algorithms, the robot achieves a sorting rate of over 96%, operating continuously 24 hours a day, replacing the high-risk and inefficient manual sorting.

Multi-level fine sorting modules: In addition to the robot, the production line integrates multiple sorting equipment, including trommel screens, tension screens, air separators, and magnetic separators. For example, a proprietary air separator effectively separates light impurities, while the magnetic separator efficiently recovers ferrous metals, ensuring the purity of materials entering the crusher and RDF forming line.

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3. High-efficiency shredding and forming: Ensuring aggregate quality and fuel homogenization

After rigorous sorting, the materials are transported to two core processing lines: the recycled aggregate line and the RDF fuel line.

High-efficiency recycled aggregate preparation: Employing impact or waste shredders for construction waste, equipped with an intelligent control system, which automatically adjusts according to material hardness, achieving high-efficiency crushing and reducing energy consumption. The crushed aggregate undergoes multi-layer precision screening to produce high-quality recycled aggregates in various specifications, including 0-5mm, 5-10mm, and 10-31.5mm, fully meeting building material application standards.

RDF Molding and Quality Control: After fine crushing, combustible materials enter a professional RDF molding system. This system strictly controls molding pressure, temperature, and moisture content (which can be reduced to below 12%), producing fuel rods with uniform density and stable calorific value. The molding process is odorless and low-dust, meeting environmental protection production requirements.

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4. Policy Compliance and Future Adaptability

The production line design resonates with national strategies, ensuring long-term stable operation of the project.

Aligns with “Zero Waste City” and Circular Economy Policies
Technological Advancement Recognized

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5. Why Choose Guoxin Machinery’s “Sorting + RDF Molding” Closed-Loop Production Line?

This production line provides a one-stop resource recovery solution, not just a single processing device. It achieves precise material separation through intelligent sorting and maximizes value through dual-line output (recycled aggregate + RDF fuel), truly constructing a complete business closed loop from waste collection and refined treatment to the market-based sales of resource-based products.

Dual-revenue drive, low investment risk: Simultaneously producing recycled aggregate with stable market demand and high-value-added green fuel, the dual revenue channels ensure the project maintains healthy cash flow even when the market for a single product fluctuates.

Intelligent operation, long-term cost advantages: The highly automated sorting and control system significantly reduces reliance on manual labor, improves sorting consistency and processing efficiency, and reduces long-term operating costs.

Contributing to “Dual Carbon” Goals, Enhancing Corporate Image: The project significantly reduces landfill and greenhouse gas emissions, serving as a solid vehicle for fulfilling social responsibility and enhancing the company’s green brand image.

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6. Ideal Application Scenarios

Urban Construction and mixed Waste Resource Utilization Center: Processes complex and impurity-laden demolition and renovation waste, achieving dual output of aggregate and fuel.

Large-scale industrial park supporting solid waste disposal project: This project handles general industrial solid waste generated within the park (such as waste leather, waste fabric, waste plastics, etc.), achieving internal recycling of energy and resources within the park.

“Zero-Waste City” key construction project: Serving as a crucial hub for the resource-based disposal of classified urban solid waste, showcasing high-value utilization technologies.

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7. Logistics, Commissioning, and Support

Modular Design: The production line adopts a modular design, facilitating transportation, installation, and subsequent expansion.

Comprehensive Technical Support: Providing full-cycle services from site planning, installation, and commissioning to operation training and maintenance, ensuring the production line reaches full capacity quickly and operates stably.

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8. Customer Success Case (Example)

Project: A “Zero-Waste City” construction solid waste comprehensive utilization base in a city in East China.
Challenge: Traditional disposal methods are incomplete in sorting mixed decoration waste, resulting in recycled aggregates with many impurities and low value, and a large amount of combustible debris becoming “secondary waste” with nowhere to go.

Solution: Adopting Guoxin Machinery’s 800-ton/day intelligent sorting and RDF molding closed-loop production line.

Results:

•  Recycled aggregate purity exceeds 99%, widely used in municipal road subbase and building materials.
• Annual production of high-quality RDF fuel exceeds 50,000 tons, all sold to local cement companies under long-term supply agreements.
• The project’s overall resource utilization rate exceeds 98%, becoming a regional benchmark for the circular economy and receiving central government funding.

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9 FAQ

• Can this production line really handle highly complex construction and mixed waste?

Yes. This is precisely the core advantage of this production line. Through a combined process of “multi-stage screening + intelligent air separation + AI robot sorting,” it can effectively and accurately separate metals, aggregates, combustibles, and silt from mixed materials, laying the foundation for high-value utilization in the downstream process.

•  Is there a market for the produced RDF fuel?

Market demand is clear and continuously growing. RDF is mainly sold to cement plants, industrial enterprises with self-owned power plants, or centralized heating companies as a clean fuel to replace coal. Its stable calorific value and outstanding environmental benefits give it a competitive advantage under the “dual-carbon” policy.

•  Is the 800 tons/day processing capacity always achievable?

The actual processing capacity depends on the complexity of the material composition, moisture content, and the requirements of the final product (especially aggregate specifications). For standard demolition waste and mixed renovation waste, this designed capacity is consistently achievable with proper pretreatment.

•  Is the maintenance of the intelligent sorting robot complex?

Our AI robots have self-diagnostic and remote upgrade capabilities. Routine maintenance is simple, mainly involving routine checks of mechanical parts. We provide comprehensive operation and maintenance training and have established a remote technical support channel to ensure stable system operation.

•  What is the approximate payback period for the project?

The payback period depends on the local market prices of recycled aggregates and alternative fuels, government subsidies, and processing fee revenue. Because this system creates dual value from aggregates and fuels, it typically significantly shortens the payback period compared to a single aggregate production line.

•  What are the environmental protection measures for the production line?

High-efficiency bag filters are installed at all key dust-generating points along the line. The equipment uses a sealed hood design and is equipped with a spray dust suppression system. The main equipment is installed in a closed workshop to ensure that noise and dust emissions meet environmental protection requirements.

•  Can the equipment be partially configured and constructed in phases?

Yes. We provide modular and scalable solutions. For example, the sorting and aggregate production module can be built first, and the RDF molding module can be added after market channels are established, reducing initial investment pressure.

•  Are there government support policies for this type of project?

Yes. Solid waste resource utilization projects are a key area of ​​national support and can apply for national and local energy conservation and emission reduction funds, technological transformation subsidies, tax incentives, etc. We can assist in providing technical solutions that meet policy requirements.

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Please inform us of your specific material types, daily processing volume targets, site conditions, and plans for the final product—our engineers will tailor the best technical and commercial solutions for you and provide a detailed investment analysis report.