Applicability of dust capture techniques for various finishing operations

Regulations on dust emissions and occupational health and safety. Example plants 

The technique is applied in the vast majority of the European foundries. 

Abrasive cutting Stationary abrasive cutting installations are extracted. Customary exhaust air decontamination processes are cyclones, wet washing and dry filters Sawing, rapping, pressing These handling processes cause few emissions and do not require reduction measures in normal conditions 

Chiselling, needling In these processes mainly coarse particles are produced which are difficult to remove through extraction. The work is mainly carried out in cabins for safety reasons. In special cases, e.g. when removing bumt-on sand, the generated dust may be extracted by an extraction arm. The exhaust air is decontaminated in cyclones, wet washing and dry filters 

Grinding-. Emission capture when grinding on stationary machines takes place in a similar way as with abrasive cutting, i.e. via fixed fimnels into which the abrasive blast is directed. An enclosed work place is used for manual grinding and abrasive cutting. Extraction walls can then be applied in the housing. Air decontamination processes are cyclones, wet washing and dry filters 

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Table 4.53 Applicability of dust capture techniques for various finishing operations [32, CAEF, 1997], [225, TWG, 2003]...

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