Company name: .....................................................
Metallurgical Industry Survey - air emissions study
Contact numbers: .....................................................
Contact person: .....................................................
Email: .....................................................
1. Melting methods (please copy the form and complete separately for each individual process on-site).
| Production quantity (range) | If unable to specify precisely, please indicate general furnace capacities as follows: "Small" - ≤ 1,000 kg/day "Small-medium" - 1,000 to 5,000 kg/day "Medium" - 5,000 to 20,000 kg/day "Large" - >20,000 kg/day | |||
| tick | daily (kg) | annual (t) | ||
| electric induction | ||||
| arc furnace | ||||
| resistance furnace | ||||
| cupola | ||||
| rotary | ||||
| tilting rotary | ||||
| reverbatory | ||||
| oil/gas fired crucible | ||||
| other (specify) | ||||
2a. Ferrous metals cast
| tick | daily (kg) | annual (t) | Specify metal treatment/flux used, e.g. magnesium,O2, lancing, lime, fluorspar, other | |
| Irons | ||||
| Steels |
2b. Non-ferrous metals cast
| tick | daily (kg) | annual (t) | Specify metal treatment/flux used, e.g. NaCl, chlorine, nitrogen, other additives | |
| Aluminium | ||||
| Copper-based | ||||
| Zinc | ||||
| Lead | ||||
| Other (specify) |
3. Is the operation batch or continuous?
| tick | |
| Batch | |
| Semi-continuous | |
| Continuous |
Approximate time for a batch/melt cycle _______________ hours
Size of batch/melt cycle _____________ kg (metals cast)
4. What air pollution control equipment is in place on the furnace?
| tick | If associated with more than one process or furnace specify | |
| Water scrubber | ||
| Bag filter | ||
| Cyclone | ||
| Afterburner | ||
| None | ||
| Other (specify) | ||
| .................. |
Is lime added to the bag filter? Yes/No
5. Heat recovery or gas quenching on fume extraction? Yes / No
6. Has any emission testing been carried out on the furnace air emissions? Yes / No
7. Any sample ports in main discharge vent? Yes / No
Reasonable access? Yes / No
8. (Optional) If testing has been carried out, what contaminants have been tested? (e.g. particulate matter, metals, dioxins)
.............................................................................
Would you make the data available to the study? Yes / No
(Note confidentiality of your site could be agreed)
9. Condition of input materials used
| tick | Metal input quality |
| clean - internally generated returns or ingots from elsewhere | |
| contaminated with cutting oil (specify if type known) ______________________ | |
| contaminated with paint | |
| contaminated with plastics | |
| mixed | |
| other (specify) _______________________ |
10. Is pretreatment or precleaning of scrap used? (Specify)
11. Method of ventilation from furnaces or melters
Is furnace hooded and directly ventilated? Yes / No
Estimated potential fume capture efficiency over the furnace
| tick | |
| 100% | |
| 75% | |
| 50% | |
| <50% |
12. What form of general workspace ventilation is used?
| tick | |
| natural | |
| forced (separate from furnace/s) | |
| forced (combined with furnace/s) |
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Appendix A: Metals Industry Survey Form
April 2004
© Ministry for the Environment