The metallurgical production covers sintering, ironmaking, steelmaking and steel rolling, generating high-temperature, high-concentration corrosive dust and flue gas throughout the whole process. Such pollutants cause environmental pollution, endanger workers’ health and accelerate equipment wear. Featuring high dust removal efficiency and strong environmental adaptability, pulse dust collectors have become core equipment for flue gas and dust treatment, facilitating enterprises to realize compliant and eco-friendly production.
Pulse dust collectors can adapt to severe working conditions in various metallurgical processes. The flue gas from sintering inlet and outlet ranges from 150℃ to 180℃ and contains massive iron oxide dust. Equipped with high-temperature resistant filter materials like PPS and P84 which can withstand continuous temperature up to 220℃, the equipment captures fine dust with a removal efficiency over 99.8%. Dust produced at blast furnace tapping area features instant high concentration and coarse particles; the combined process of pre-dedusting plus pulse bag dust removal is adopted: coarse particles over 80% are removed via gravity settling first, then fine dust is filtered by large-diameter filter bags with wear-resistant lining to avoid abrasion damage. High-temperature oily flue gas and combustible dust come out during smelting of electric arc furnace and converter. Installed with off-line separate-chamber cleaning, anti-static filter bags and spark arresting devices, pulse dust collectors prevent bag blockage and eliminate potential safety hazards.
In terms of merits, the equipment stabilizes exhaust concentration below 10mg/m³ to satisfy ultra-low emission standards for metallurgy. Thickened shell with inner anti-corrosion coating effectively resists corrosion from acidic gases such as sulfur dioxide and prolongs service life. The intelligent control system automatically adjusts pulse blowing frequency according to pressure difference, matching with variable-frequency fans to cut energy consumption by 15%-25% and extend filter bag service life above three years for lower maintenance expense. Modular separate-chamber design enables maintenance on single compartment without halting the whole system, minimizing production downtime losses.
Field application delivers prominent effects. After retrofitting sintering dedusting system with pulse dust collectors, a Shandong iron & steel plant keeps emission concentration between 6-8mg/m³ and cuts annual maintenance cost by 40,000 RMB. A lead smelting enterprise in Henan reduces workshop dust concentration to 1.8mg/m³, complying with occupational health requirements. As environmental regulations tighten, pulse dust collectors are upgraded with superfine filter materials, synergistic heavy metal removal and intelligent operation, offering solid technical support for low-carbon transformation of metallurgical industry.