Division BAT 92
United Kingdom
In order to prevent or reduce diffuse emissions from charging, smelting and tapping operations in lead and/or tin production, and from pre-decoppering operations in primary lead production, BAT is to use an appropriate combination of the techniques given below.
| Descriptions of the techniques are given in Section 1.10. | ||
| Technique | Applicability | |
|---|---|---|
| a | Encapsulated charging system with an air extraction system | Generally applicable |
| b | Sealed or enclosed furnaces with door sealingf1 for processes with a discontinuous feed and output | Generally applicable |
| c | Operate furnace and gas routes under negative pressure and at a sufficient gas extraction rate to prevent pressurisation | Generally applicable |
| d | Capture hood/enclosures at charging and tapping points | Generally applicable |
| e | Enclosed building | Generally applicable |
| f | Complete hood coverage with an air extraction system | In existing plants or major upgrades of existing plants, application may be difficult due to the space requirements |
| g | Maintain furnace sealing | Generally applicable |
| h | Maintain the temperature in the furnace at the lowest required level | Generally applicable |
| i | Apply a hood at the tapping point, ladles and drossing area with an air extraction system | Generally applicable |
| j | Pretreatment of dusty raw material, such as pelletisation | Applicable only when the process and the furnace can use pelletised raw materials |
| k | Apply a doghouse for ladles during tapping | Generally applicable |
| l | An air extraction system for charging and tapping area connected to a filtration system | Generally applicable |
Annotations
Footnotes
- f1
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Descriptions of the techniques are given in Section 1.10.