Grinding dust

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Grinding dust is a dust-like residue, which as a side or waste product during the grinding of materials such as wood is formed, or metal in the industry, in the craft as well as in the home. In addition to health hazards, grinding dust can also pose a risk of explosion.

Health risk

Grinding dust is polluting the air you breathe. The potential health risk depends on the concentration and composition of the dust. By default, the general dust limit value is used for hazard assessment, which is 3 mg / m 3 for A dust and 10 mg / m 3 for E dust . Substance-specific limit values ​​can, however, be lower.

The above limit values ​​are exceeded in many cases. A focus in grinding work is therefore the collection and removal of dust. In the context of grinding work, u. a. Wet processes can be used to prevent the spread of grinding dust into the air we breathe. A method corresponding to the state of the art for reducing the workload is the use of an extraction system . A suction arm is used to extract large volumes at the workplace and the extracted gas is fed to a filter system.

Risk of explosion

Depending on the properties and the material being processed, floating grinding dust can pose a risk of explosion. Dust explosions have already occurred more frequently in aluminum processing companies , which can be attributed to grinding dust.

Individual evidence

  1. DIN EN ISO 16559: 2014-12 Biogenic solid fuels; Terminology, definitions and descriptions (ISO 16559: 2014); German version EN ISO 16559: 2014. Beuth Verlag, Berlin, p. 24.
  2. : Section 10.1 BGI 543 - 10.1 Grinding dust , last accessed on July 15, 2014.
  3. a b Thorsten Zurell: Extraction of aluminum grinding dust and welding fumes in automotive engineering with explosion-proof filter systems. In: Hazardous substances - cleanliness. Air . 62, No. 11/12, 2002, ISSN  0949-8036 , pp. 455-460.