DUST

Mines and quarries, steel works and cement works are recognized as generating a lot of « dust » emissions.

Dedusting

From the material extraction up to its transportation out of the site, each process step constitutes a potential dusting source.
In order to restrict dust emissions at the lowest level, Teclinea environnement developed specific dedusting equipment called « Sonic DS ». system.
The « Sonic DS » system is active on all particles and more especially on the finest particles that are harmful for health. Dedusting is made by releasing an extra-fine water fog, its fineness being adjustable.

Dust is composed of very thin solid particles that are floating in the air and that are penetrating more or less, depending on their size, the body via the lungs.

DUST
PENETRATION

DUST SIZE

EFFECTS

10 to 100 microns Called as well « total dust », this dust is retained inside the nasal cavities.
5 to 10 microns This dust penetrates the trachea, the bronchial tubes and the bronchioles. It may be either spat out or swallowed in the oesophagus, but if dusting is too high, then the dust particles may reach the alveoli of the lungs.
0.5 microns This very thin dust forms a deposit in the alveoli of the lungs. Under 0.5 micron, the dust particles behave like gas inside the body and align with the breathing.
Les poussières
Mineral-type dusts (silica, asbestos, iron, zinc, cobalt, tin), vegetal-type dusts (bagasse, cotton, cereals, flour) or even animal-type dusts (faeces of hens, pigeons, budgerigars,...)
Are sources of many and varied exposures within the professional environment; May directly be generated by the raw materials used (powders more especially). The dust is then released when being produced, transported, stored or during implementation (extraction, ores crushing, flour production, manufacture and use of plastic materials, ...); Are also produced when processing finished or half-finished manufactured products (metals machining, sawing, polishing, wood or synthetic materials grinding, waste crushing, or when carrying out demolition or cleaning works (Extract of the Act "Safety and Health at Work). Read more [...]

  • Dust: health hazard


    As a general rule, dust is considered as being prejudicial to and dangerous for health, as it involves:
  • Détails poussièe A respiratory obstruction (inert dust, which is without specific toxicity)
  • Détails poussièe Allergenic effects (asthma due to flour)
  • Détails poussièe Toxic effects for the organism (neurotoxicity of mercury dust, beryllium immunological effects, ...)
  • Détails poussièe Nose lesions (rhinitis, perforation of the nasal septum, ethmoid sinus cancer)
  • Détails poussièe Inogenous effects (proliferation of connective tissues in the lungs area (silicosis, siderosis ...).
  • Détails poussièe Carcinogenic effects (lungs disease for asbestos-related effects, nasal disease for wood-related effects...)
  • (Extract of the Act "Safety and Health at Work")