Dust removal Technology

Applicable place

Advantage

Disadvantage

Dust removal rate

Invest

Chemical dust suppressant

Mining face

Easy and Convenient

Corrosive, easy to cause pollution

80% - 90%

Small

Foam dust removal

Tunneling face

1) Combining the advantages of spray dust suppression and chemical dust suppression

2) Has good wettability, adhesion, and coverage

1) The foam is affected by downhole air currents

2) Chemical reagents corrode the nozzles, causing blockages

≥70

Small

Active magnetized water for dust decrease

Mining face

1) Lower the solution’s surface tension

2) Suppress Ca²⁺ and Fe²⁺ plasma corrosion on downhole equipment and increase the equipment’s service life

1) High requirements for water quality and suspended solids should not be greater than 150 mg/L

2) Long magnetization time

80% - 90%

Big

Wind and fog double curtain

Tunneling face

The best treatment effect on respirable dust

When the dust concentration is high, it affects the vision

≥90%

Small

Ultrasonic atomization

Mining face

1) The atomization effect is good; the particle size of the water mist is less than 10 μm

2) The water consumption is small, which is 1% of the water consumption of ordinary wet dust removal technology

1) Affected by low temperature, it is easy to freeze at the nozzle and block the nozzle

2) Affected by wind and current, water mist is formed and dispersed, which is easy to cause secondary pollution

≥80%

Small

Biomembrane

Coal preparation plant

1) Non-toxic and non-polluting to the human environment

2) Has an intelligent control system

High power and water consumption

≥90%

Big

Microbial dust suppression

Road, surface coal mine

Easily degradable, good biocompatibility

1) The process of microbial action is slow

2) Microbial activity depends on the environment

80%

Small