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Dry-mist dust suppression system for steel rolling lines
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Dry-mist dust suppression system for steel rolling lines
This Dry-mist dust suppression system for steel rolling lines An efficient, uncontrolled dust‑control solution developed for the rolling mill line of Minsteel Co., Ltd. is specifically designed to address the characteristics of high‑temperature metallic particulates (PM2.5/PM10) generated during the rolling process. Employing dual‑fluid ultrasonic atomization technology, it produces ultrafine dry mist droplets ranging from 1 to 10 microns in size—highly matched to the particle size distribution of the dust. Through inertial impaction and diffusive deposition, the system achieves precise dust capture, delivering a comprehensive dust suppression efficiency exceeding 95%.
The complete system comprises a dry‑mist generator, a high‑pressure pump station, an air compressor, a precision filtration unit, an intelligent control cabinet, and anti‑clogging atomizing nozzles. Key components are made of stainless steel, enabling the system to withstand the harsh operating conditions of steel rolling lines—high temperature, high humidity, and heavy dust loads. Equipped with a PLC‑based intelligent control system, it can interface with rolling mill and roller‑conveyor signals to achieve coordinated start‑up and shutdown. Additionally, it features dust‑concentration and temperature–humidity sensors that dynamically adjust the mist output in real time, maintaining workshop humidity within a stable range of 40%–60% and thereby preventing water‑stain residues on steel products and electrical equipment from becoming damp.
The system features multi-stage filtration, anti‑drip nozzles, and other specialized designs; it automatically drains residual water from the piping when shut down, making it suitable for low‑temperature environments. With a modular layout, the spray heads can be flexibly positioned at dust‑generating points such as the mill exit and cooling zones, without requiring enclosure of existing equipment or disrupting production and maintenance. Compared with conventional spray systems, it achieves a 60% reduction in water consumption, reduces material moisture gain to below 0.05%, eliminates secondary pollution, and offers low maintenance costs—making it an ideal ancillary solution for green steel‑rolling operations.
Product Advantages and Features of the Dry‑Mist Dust Suppression Spray System ：
1 , Source‑level control—implement dust suppression at the dust‑generating points at the source. The dust‑control performance is excellent, fully capable of ensuring that on‑site dust‑emission points are ≤ 4mg/m ³, workplace dust concentration ≤ 2mg/m ³, with no secondary pollution, truly achieves “zero emissions.”
2. High efficiency—enables the use of multiple nozzle models in combination, achieving a dust suppression rate of up to 95% The above
3. Low water consumption—significant energy-saving and consumption-reduction effects, compared with conventional wet‑type power‑plant dust collectors. 85%-90% , water conservation 70%-85%
4. Low cost—no suction or exhaust ductwork, no dust (or wastewater) removal system, resulting in a low overall investment.
5. Safety—significantly reduces the risk of dust explosions and lowers investment in fire‑protection equipment.
6. High efficiency—compact footprint, user-friendly operation, and a high degree of automation. Our independently developed centralized control system is the first of its kind in China, enabling unattended operation.
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