Flue Gas Waste Heat Utilization System Improves Flux Heating Efficiency in Galvanizing Lines

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In modern galvanizing plants, energy efficiency and coating quality are closely linked. Jiangsu XinLingYu Intelligent Technology Co., Ltd has developed an advanced flue gas waste heat utilization system designed specifically for heating galvanizing flux without additional fuel consumption, helping manufacturers improve coating consistency and reduce operational risks.

In many galvanizing lines, flux remains at normal ambient temperature. Under these conditions, ZnCl₂ and NH₄Cl attach slowly to the steel surface, making it difficult for the flux to dry uniformly. When workpieces enter the zinc bath, trapped moisture can cause zinc explosion, resulting in coating defects and safety hazards.

The flue gas waste heat utilization system uses burning tail gas heat recovered through a high-efficiency heat exchanger, eliminating the need for an extra heating source. By maintaining the flux temperature at 60–70°C, the system significantly reduces flux density and improves wetting behavior on steel surfaces.

At controlled temperatures, improved uniformity of ZnCl₂ and NH₄Cl attachment ensures smoother flux layers. This leads to more stable zinc immersion and a more uniform zinc coating, reducing rework and material waste.

By combining energy recovery with process optimization, Jiangsu XinLingYu Intelligent Technology Co., Ltd delivers reliable flue gas waste heat utilization systems, galvanizing flux heating solutions, and waste heat recovery equipment tailored for modern galvanizing plants.

1. Does the system require additional fuel?
   No, it uses recovered flue gas heat only.

2. What is the optimal flux temperature?
   Between 60–70°C.

3. Can it be retrofitted to existing lines?
   Yes, it supports customized installation.

4. Does it reduce zinc explosion risk?
   Yes, by improving flux drying and uniformity.

5. Is the system suitable for continuous operation?
   Yes, it is designed for industrial duty cycles.