Typical mass and energy data for zinc pressure die-casting

Casting processes for lead may be divided into pressure die-casting of lead casting for storage batteries sand casting for protective screens. 

Various waste and exhaust gas cleaning techniques are used in the foundry industry. Their principles are discussed in the BREF document for non-ferrous metal industries. The properties and emission levels of dust abatement systems are given in Table 3.32. A full discussion on the selection of the abatement technique, its applicability in the various foundry processes and the achievable emission levels is given as part of the techniques to be considered in the selection of BAT in Section 4.5. 

Technique Particle Size (um) Collection Efficiency at 1 pm (%) Maximum Operating Temperature (°C) Range of Achievable Emissions (mg/Nm Comments 

HotEP 0.1 99 Depending on design 450 5-15 (Pre abatement 50) 4 or 5 zones. Usual appUcation is pre-abatement 

WetEP 0.01 99 80 1-5 (Visually clear) EP with 2 zones in series. Mainly mist precipitation 

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Table 3.31 Typical mass and energy data for zinc pressure die-casting...

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