Mineral company dust removal: efficient dust control, safeguarding production and environment
Jul 22,2025
The mining, crushing, screening, transportation and other processes can generate a large amount of dust, which not only threatens the health of workers, but may also cause equipment wear and tear, environmental pollution and other problems. For mining companies, a scientifically effective dust removal plan is the key to ensuring production efficiency and meeting environmental standards.
Characteristics and difficulties in controlling mineral dust
Mineral dust has a complex composition, including ore debris, soil particles, etc., with a large particle size range (from a few micrometers to millimeters), high hardness, and strong abrasion resistance. In open-pit mining scenarios, dust is easily dispersed due to the influence of wind; During underground mining, the dust concentration in enclosed spaces is higher, making it difficult to control. In addition, some mineral (such as asbestos, heavy metal minerals) dust is toxic and long-term exposure can lead to serious diseases, requiring extremely high dust removal efficiency.
Core dust removal equipment and applicable scenarios
1. Crushing and screening process: pulse bag filter
Crushing and screening equipment are major dust producers, and pulse bag dust collectors can accurately capture fine dust. Choose wear-resistant filter bags (such as Nomex material) to cope with high hardness dust wear; The dust cleaning system adopts high-frequency spraying (once every 2-3 minutes) to avoid filter bag blockage. In the granite crushing workshop, this equipment can reduce the dust concentration from 2000mg/m ³ to below 5mg/m ³.
2. Open pit mining and transportation: fog cannon machine+windbreak and dust suppression wall
The dust control in open-pit mining areas and transportation roads needs to be combined with active dust reduction and passive interception. The fog gun machine covers a large area through high-pressure spray, and the droplets and dust combine to settle; Windproof and dust suppression walls (8-12 meters high) can reduce wind speed and minimize dust dispersion. In open-pit mining areas of coal mines, they can lower the surrounding dust concentration by 60%.
3. Underground mining: local ventilation and dust removal system
The underground tunnel space is enclosed, and local ventilation fans are used in conjunction with dust hoods to extract dust from the excavation face and loading points to mobile dust collectors. The equipment adopts explosion-proof design (such as 316L stainless steel shell) to adapt to high humidity and dusty underground environment, ensuring the safety of mining operations.
Key governance points
1. Source control: Install a sealing cover at the feed inlet of the crushing equipment, and use a sealed corridor for the transportation belt to reduce dust spillage.
2. Equipment maintenance: Regularly replace filter bags and clean pipeline dust to avoid a decrease in dust removal efficiency due to equipment aging.
3. Safety compliance: For toxic dust such as asbestos and heavy metal mines, efficient filtration equipment (such as HEPA filters) should be equipped to ensure that emissions and worker protection comply with international standards (such as EU CLP regulations).
Scientific dust removal solutions can help mineral companies balance production efficiency and environmental safety, not only reducing equipment maintenance costs, but also enhancing the company's green competitiveness in the international market.
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