Application Case of Dust Collector Filter Bag and Cages in Mining Crushing and Screening Plant
This case focuses on the application of high-performance dust collector filter bags and cages in a large-scale mining crushing and screening plant, aiming to solve the problems of high dust concentration, severe abrasion, and frequent equipment maintenance in the production process. The plant mainly processes iron ore, with an annual processing capacity of 1.2 million tons, and the crushing and screening link is the core dust-producing section. The original dust removal system had low filtration efficiency, short service life of filter materials, and high operating costs, which affected the on-site working environment and production continuity. After upgrading the filter bags and cages, the dust removal effect and equipment operation stability have been significantly improved.
|
Parameter |
Specific Value |
|
Dust concentration at inlet |
15-20g/m³ |
|
Dust particle size |
0.5-100μm (average 25μm) |
|
Flue gas temperature |
25-45℃ (occasional peak 60℃) |
|
Humidity |
60%-75% |
|
Dust characteristics |
High hardness, strong abrasiveness, slightly acidic |
|
Equipment operating pressure |
-3000 to -4000Pa |
|
Component |
Specification Parameter |
Quantity |
|
Filter Bag |
Material: Polyester needle felt (anti-abrasion, anti-static); Size: Φ130mm×2450mm; Thickness: 1.8mm; Air permeability: 12-15m³/(m²·min); Temperature resistance: ≤80℃ |
320 pieces |
|
Filter Cage |
Material: Carbon steel (galvanized surface); Structure: 6-rib cylindrical; Size: Φ125mm×2400mm; Wire diameter: 3.2mm; Surface treatment: Hot-dip galvanizing (anti-corrosion) |
320 sets |
After installing the new filter bags and cages, the dust removal system has been running stably for 12 months. The dust emission concentration at the outlet is reduced to less than 30mg/m³, which meets the national environmental protection standards. The service life of the filter bag is extended from the original 6-8 months to 12-15 months, and the maintenance frequency is reduced by 40%. The anti-abrasion and anti-corrosion performance of the filter cage effectively avoids the deformation and damage of the filter bag, reducing the replacement cost of spare parts by about 35%. In addition, the optimized filtration performance improves the dust collection efficiency, reduces the dust accumulation in the equipment, and ensures the continuous and efficient operation of the crushing and screening production line. This case proves that selecting high-performance filter bags and cages tailored to the working conditions is crucial for improving the dust removal effect and reducing the operating cost of mining enterprises.
