**Application of Baide Burner in Aluminum and Aluminum Alloy Holding Furnaces**
By Liu Min, Luoyang Nonferrous Metals Processing Design and Research Institute, 471039; Suzhou Xinchangguang Industrial Furnace Co., Ltd., 215008
The Baide burner, originally designed for the boiler industry, has recently gained popularity in the aluminum processing sector. This paper explores its application in aluminum and aluminum alloy holding furnaces, aiming to enhance its adoption in industrial production. With rising electricity costs, many aluminum plants have transitioned from electric to fuel-based heating systems, such as oil, natural gas, or LPG. These furnaces require high temperature control accuracy, low heating capacity, and advanced automation—challenges that domestic burners often fail to meet. The Italian-made Baide burner, with its high automation level, built-in ignition and flame detection system, and ease of operation, is well-suited for these applications. It comes in various types, including single-fuel (light oil), dual-fuel (natural gas and LPG), and multi-stage configurations.
In a recent project for Grandis Shanghai Aluminum Co., Ltd., a 15-ton holding furnace was equipped with a Baide segment-type light oil burner. After on-site commissioning, the system met all process requirements effectively. The burner features an oil pump and fan integrated into the unit, with two nozzles: one for small fire and another for large fire. The working principle involves pre-purging, ignition, and flame monitoring, ensuring stable combustion and precise temperature control.
The burner also includes an advanced combustion controller that manages purge, ignition, and flame detection automatically. If any fault occurs, the system locks out and alerts the operator. Once resolved, it resumes operation under control. This level of automation significantly improves efficiency and reduces manual intervention.
In the context of temperature control for aluminum alloy holding furnaces, the Baide burner offers much better accuracy than traditional domestic alternatives. Previously, resistance band heating with thyristor control had a tolerance of ±3°C, but the Baide system achieves ±1°C, making it ideal for maintaining consistent furnace temperatures. The system uses on-off control based on self-tuning, allowing operators to simply set the desired temperature, while the burner handles the rest. This simplifies operations, improves working conditions, and ensures accurate temperature regulation.
In the oven process, the Baide burner provides superior temperature control, especially during low-temperature stages. Its wide adjustment range allows for fine-tuning of the flame size, ensuring a smooth heating curve. Workers only need to operate the control panel, eliminating the need for manual firewood addition and reducing labor intensity. Additionally, the atomization quality of the fuel leads to cleaner combustion, avoiding black smoke and soot buildup.
During commissioning, challenges such as overheating after shutdown were addressed by modifying the control circuit. Keeping the fan running after the fire stops helps cool the sensitive components, preventing damage. Oil circuit maintenance, including adding filters and ensuring proper return lines, further improved reliability.
In conclusion, the Baide burner demonstrates clear advantages over domestic alternatives in terms of automation, precision, and reliability. Although some issues remain, its performance makes it a promising option for future furnace designs. Continued research and added safety measures will help maximize its potential in the aluminum processing industry.
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