1. Project Background & Technical Challenge

INNOWASTE is an industrial solid waste recycling enterprise in Thailand with a ten-year operational history, specializing in converting industrial waste into Refuse-Derived Fuel (RDF).

Production Target: 200 tons per day (TPD) total output across two processing lines (100 TPD per line).

Particle Size Requirement: Strict sizing standard of ≤ 50mm dictated by local cement kiln co-processing specifications.

• The Multi-Stage Shredding Bottleneck

Previously, maintaining a consistent 50 mm output required multi-stage dual-shaft shredders paired with external screening systems.

As primary cutter blades wore down, long strip-shaped material fractions increased, requiring recirculation loops for secondary shredding. This configuration increased initial capital expenditures (CAPEX), required larger floor space, and escalated operational maintenance (OPEX).

2. Technical Features of the Harden One-Step Shredding System

To simplify the process flow and lower operational costs, INNOWASTE integrated the Harden One-Step Shredder:

Process Simplification (Single-Stage Conversion): Performs size reduction in a single pass, eliminating secondary shredding units and reducing the number of inline conveyors.

Granularity Control ≤50 mm: Integrated discharge screens ensure uniform 50 mm particle sizing in a single pass, eliminating oversized recirculation fractions.

Reduced Maintenance Expenditure: Fewer mechanical units drastically reduce daily inspection hours. Reversible cutter design allows blade rotation in 1–2 days per month, minimizing plant downtime.

Continuous Operation & Low Energy Consumption: Variable-frequency drive (VFD) technology optimizes energy efficiency during continuous 24/7 operations.

3. On-Site Executive Interview: Jack, CEO of INNOWASTE

After one month of continuous system operation, Jack, CEO of INNOWASTE, shared insights regarding equipment selection, commissioning, and operational performance.

Q1: What led to your decision to partner with Harden?

Jack: "INNOWASTE has operated for ten years in industrial waste-to-energy recovery. We have utilized Harden equipment since our company's inception. During the engineering evaluation phase for our new line expansion, Harden introduced their newly developed One-Step Shredder.

The system directly aligned with our core goals: simplifying the process flow, lowering operating costs, and producing 50 mm RDF in a single pass."

Q2: Why select the One-Step Shredder over traditional setups?

Jack: "After evaluating multiple technical options, the Harden One-Step Shredder was the only system capable of outputting 50 mm fuel particles without requiring secondary shredding machinery.

Operating a single primary unit requires fewer conveyors, reduces maintenance overhead, and lowers overall energy consumption per ton."

Q3: How has the equipment performed since installation?

Jack: "The machine has operated continuously for over a month. Our primary maintenance task was a single blade rotation, which took only 1–2 days. The system operates reliably 24/7 without unscheduled shutdowns.

 The output particle size is uniform, throughput meets our design target, and initial commissioning went smoothly."

Q4: How does performance compare to traditional multi-stage systems?

Jack: "Compared to conventional setups, routine inspection times are significantly shorter, directly improving overall operational efficiency and lowering operating costs.

With only one main engine and one discharge conveyor, daily maintenance is minimal. Traditional setups require repeated trial runs and adjustments to maintain a 50 mm specification; the One-Step Shredder achieves target particle size directly, eliminating fine-tuning downtime."

3. Conclusion

Operational efficiency in alternative fuel preparation depends on process simplification and long-term OPEX control.

The Harden One-Step Shredding Solution eliminates complex multi-stage configurations, resolving high energy usage, large equipment footprints, and heavy maintenance burdens in RDF production.

Field data from the INNOWASTE plant in Thailand confirms that stable sizing, reduced maintenance downtime, and predictable operating costs make single-stage shredding the preferred choice for industrial waste recovery.