Division BAT 45

United Kingdom

In order to reduce dust and metal emissions to air from a copper melting furnace, BAT is to select and feed the raw materials according to the furnace type and the abatement system used and to use a bag filter.

Table 3

BAT-associated emission levels for dust emissions to air from copper production

Parameter	BAT	Process	BAT-AEL (mg/Nm³)
As an average over the sampling period.
As a daily average or as an average over the sampling period.
As a daily average.
Dust emissions are expected to be towards the lower end of the range when emissions of heavy metals are above the following levels: 1 mg/Nm³ for lead, 1 mg/Nm³ for copper, 0,05 mg/Nm³ for arsenic, 0,05 mg/Nm³ for cadmium.
When the concentrates used have a high organic carbon content (e.g. around 10 wt-%), emissions of up to 10 mg/Nm³ can be expected.
Dust emissions are expected to be towards the lower end of the range when emissions of lead are above 1 mg/Nm³.
The lower end of the range is associated with the use of a bag filter.
Dust emissions are expected to be towards the lower end of the range when emissions of copper are above 1 mg/Nm³.
Dust	BAT 37	Reception, storage, handling, transport, metering, mixing, blending, crushing, drying, cutting and screening of raw materials, and the pyrolytic treatment of copper turnings in primary and secondary copper production	2-5^f1 ^f2
	BAT 38	Concentrate drying in primary copper production	3-5^f3 ^f4
	BAT 39	Primary copper smelter and converter (emissions other than those that are routed to the sulphuric acid or liquid SO₂ plant or power plant)	2-5^f5
	BAT 40	Secondary copper smelter and converter and processing of secondary copper intermediates (emissions other than those that are routed to the sulphuric acid plant)	2-4
	BAT 41	Secondary copper holding furnace	≤ 5
	BAT 42	Copper-rich slag furnace processing	2-5 ^f6
	BAT 43	Anode furnace (in primary and secondary copper production)	2-5
	BAT 44	Anode casting (in primary and secondary copper production)	≤ 5-15 ^f7
	BAT 45	Copper melting furnace	2-5 ^f8

Annotations

Footnotes

f1: As an average over the sampling period.
f2: Dust emissions are expected to be towards the lower end of the range when emissions of heavy metals are above the following levels: 1 mg/Nm³ for lead, 1 mg/Nm³ for copper, 0,05 mg/Nm³ for arsenic, 0,05 mg/Nm³ for cadmium.
f3: As a daily average or as an average over the sampling period.
f4: When the concentrates used have a high organic carbon content (e.g. around 10 wt-%), emissions of up to 10 mg/Nm³ can be expected.
f5: As a daily average.
f6: Dust emissions are expected to be towards the lower end of the range when emissions of lead are above 1 mg/Nm³.
f7: The lower end of the range is associated with the use of a bag filter.
f8: Dust emissions are expected to be towards the lower end of the range when emissions of copper are above 1 mg/Nm³.