Innovation in Refractory Production Efficiency: Performance of a 137-Plate Corundum-Mullite Push-Plate Circulation Line in 24-Hour Continuous Operation
1. Industry Insight: The Significance of Continuous Production for the Refractory Industry
In the production of high-performance refractories and special ceramics, traditional batch furnaces can no longer meet modern factories’ stringent requirements for high throughput and low unit energy consumption due to their long heating-cooling cycles and high energy loss.
By allowing materials to pass through preset temperature zones at a constant speed, continuous pusher kilns achieve dynamic thermal balance. For manufacturers of alumina or mullite products with an annual output of thousands of tons, innovation in production efficiency means more than just increased output. It also involves significantly reducing breakage rates during loading and unloading through a fully automatic circulation system, while ensuring every product undergoes an identical thermal history.
2. In-Depth Technical Analysis: Efficient Circulation Logic of 137 Push Plates
The 137-plate push-plate circulation line designed in the KYN-P17 system forms the mechanical core enabling 24-hour uninterrupted operation.
2.1 Structure of the Closed-Loop Automatic Circulation System
Within the system, the 137 push plates serve distinct functional roles:
- Furnace Section (58 plates): Located in the high-temperature core zone up to 1700 °C, supporting products through phase transformation.
- Circulation Loop Section (70 plates): Completing cooling, unloading, and reloading outside the furnace.
- Inlet & Outlet Platforms (9 plates): Acting as transition points to maintain furnace sealing and synchronize mechanical feeding cycles.
This closed-loop design eliminates the need for push plates to leave the production line for external handling, greatly reducing thermal shock frequency of refractory setter plates and extending their service life.
2.2 Strategic Value of Corundum-Mullite Material
Corundum-mullite is specified as the push-plate material. Featuring exceptional high-temperature creep resistance and low thermal conductivity, it withstands repeated pushing at 1700 °C without deformation, serving as the critical physical guarantee to prevent kiln collapse during 24/7 continuous operation.
3. Selection Guide: Evaluating Stability of High-Volume Production Lines
When selecting equipment for capacity expansion, enterprises are advised to assess the efficiency and reliability of continuous furnaces based on three key dimensions:
3.1 Matching Between Mechanical Frame and Propulsion System
Selection Criterion: Evaluate the rigidity of the furnace mechanical frame and the pushing method.
Technical Support: The KYN-P17 adopts hydraulic pushing combined with a worm gear reducer. Compared with mechanical drives, the hydraulic system delivers smoother starting and stopping pressure under the high inertia of 137 push plates carrying heavy refractory loads, preventing jamming during propulsion.
3.2 Redundancy and Precision of the Electric Control System
Selection Criterion: Examine the power regulation method under high-temperature operation.
Technical Support: The system combines SCR phase-shift triggering with Eurotherm controllers. During continuous operation, power output from heating elements must be finely adjusted in real time according to propulsion speed. The non-contact continuous regulation of SCR avoids thermal shock between the nine temperature zones and maintains stable temperature distribution throughout the 11-meter furnace chamber.
3.3 Intelligent Integration and Safety Early Warning
Selection Criterion: Check for basic Industry 4.0 monitoring capabilities.
Technical Support: The integrated Siemens PLC and touchscreen HMI enables real-time monitoring, over-temperature alarms, and broken thermocouple alerts. In highly automated plants across Southeast Asia, Europe, and the Americas, this integrated control is key to reducing maintenance labor costs and sustaining production efficiency.
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