The performance of dust collectors in ferrosilicon furnaces is influenced by several key factors. These include the flue gas working conditions (such as composition, temperature, moisture content, dust concentration, dew point value, and sulfur content), the properties of the dust (including particle size, composition, adhesion, and wettability), the flue gas velocity within the electric field, the air leakage rate of the dust collector, electrode conditions, and electrode operation.
Currently, bag-type dust removal technology represents the mainstream in dust collection development. Given that ferrosilicon furnaces are high-energy-consuming production equipment, the flue gas generated contains significant residual heat, resulting in elevated temperatures. Consequently, regardless of the type of bag-type dust collector employed, cooling measures are essential.
Commonly used bag dust removal systems include:
The air cooler and pulse bag filter system operates as a negative pressure system, with the induced draft fan positioned after the dust removal system. The process works as follows: flue gas from the ferrosilicon furnace first enters the air cooler, where it is thoroughly cooled to a temperature range suitable for the bag dust collector. The cooled flue gas then proceeds to the bag pulse dust collector. After dust removal, the flue gas is discharged through the induced draft fan chimney, meeting emission standards, while the collected dust is discharged from the ash hopper.
Effective Ash Cleaning: The use of large-diameter submerged pulse valves results in minimal injection resistance and low air pressure requirements. The instantaneous injection pressure during ash cleaning can reach up to 2000Pa, ensuring powerful and effective ash removal.
Easy Maintenance: The upper cover design allows for quick filter bag replacement by simply extracting the filter bag frame. The main fan operates in a clean airflow environment, eliminating the need for blade cleaning and maintenance, and ensuring stable fan operation.
Cost-Effective Investment: The adoption of new composite filter materials significantly enhances wear resistance, folding resistance, and peel strength. These materials can withstand high temperatures while improving filtration wind speed and extending service life. The framework utilizes an integral die-welded design, equipped with an integral venturi at the top, offering excellent overall performance, corrosion resistance, high surface finish, and no damage to the filter bags. The filter unit and dust removal body flower plate are assembled with spring snap rings, facilitating easy disassembly and maintenance while ensuring good sealing performance. Due to the high quality of accessories, overall operational costs are effectively reduced.
Professional Design: Considering the special condition where the flue gas temperature at the outlet of submerged arc furnaces can exceed 450°C, an outdoor natural cooling system is specifically designed. This system consumes no energy or power, significantly reducing costs. Additionally, an automatic control cold air valve is incorporated to handle excessive temperatures, ensuring the safe operation of the equipment.
We are a professional electric furnace manufacturer. For further inquiries, or if you require submerged arc furnaces, electric arc furnaces, ladle refining furnaces, or other melting equipment, please do not hesitate to contact us at susie@aeaxa.com
