Steel manufacturing processes generate a wide range of dust particles and other airborne pollutants, which can pose a health hazard to workers and damage equipment. Dust collectors are used in steel factories to capture these pollutants and protect workers and equipment.
There are several types of dust collectors commonly used in steel factories, including cyclone dust collectors, electrostatic precipitators, and baghouse dust collectors. Among these, baghouse dust collectors are the most popular and widely used system in steel factories. They are highly efficient, versatile, and effective in controlling air pollution.
Baghouse dust collectors consist of a series of dust filter bags/sleeves made of various materials, such as polyester needle filter felt, polypropylene needle felt, and other nonwoven needle punched felts. The bags are housed in a sealed compartment called a baghouse, where the contaminated air is drawn in and filtered through the bags. The clean air is then discharged through an outlet duct, while the dust and other particles are captured on the surface of the dust filter bags.
The function of filter bags in baghouse dust collectors is critical to the system's performance. The dust filter bags capture the dust and other pollutants, preventing them from entering the atmosphere and causing air pollution. The bags must be able to withstand high temperatures, abrasion, and chemical exposure in harsh steel factory environments, ensuring long service life and minimal downtime.
The choice of dust filter bags used in each bag filter depends on several factors, such as the type of dust generated, the temperature of the process, and the operating conditions. For example, in steel factories, high-temperature operations, such as melting and casting, require filter bags made of materials that can withstand high temperatures, such as nomex filter bags or fiberglass bag filters. Polyester filter bags are also widely used in steel factories, as they offer good resistance to abrasion and chemicals.
In summary, dust collectors are essential in steel factories to control air pollution and protect workers and equipment. Baghouse dust collectors with various types of dust collector filter bags, such as polyester felt, polypropylene felt, aramid felt, and fiberglass woven fabrics, are the most widely used system in steel factories. The choice of dust filter bags depends on the type of dust generated and the temperature and operating conditions of the process.