Cradle to Gate
Identity ID
453348fb-e217-4116-a1ca-786f95de6f02
Waste treatment
Associated ID
b6f6b450-4fa1-4b05-b3b1-08531e11c6f1
Included activities starts
Included activities ends
Description
The crude copper (copper ingots) produced from scrap copper recovery can be used in fields such as subsequent copper processing; the dataset is modelled on the actual production process and includes the main raw and auxiliary materials, energy and pollutant emissions of the production process, while infrastructure such as the manufacture of production equipment and plant construction is not included within the dataset boundary; the data inventory is formed by merging data from sources such as actual enterprise procurement and emission records; the production activities include the smelting of scrap and miscellaneous copper, flue-gas treatment, wastewater pretreatment, and the temporary storage and disposal of solid waste and other process steps.
Activity Description
The production activities of this product include scrap copper smelting (oxygen-rich side-blown furnace), flue gas treatment (gravity dust collection + bag dust collection + alkali spray), wastewater pretreatment (grease trap, septic tank), solid waste temporary storage and disposal, etc.
Process Description
Blister copper (copper ingot) complies with the "YS/T70-2015 Blister Copper" standard and has a copper content of ≥97.5%; the production raw material is scrap copper, which is used for oxygen-rich side-blown furnace smelting; quartz sand is used as a slagging agent, charcoal and pine wood as reducing agents, natural gas, electricity, oxygen, etc. as energy sources; caustic soda and hydrated lime are used for flue gas desulfurization, and lubricating oil is used for equipment maintenance.
Time period
2023
2026
Geography
China
Geography comment
Extrapolated from Hunan Province data
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Scrap copper enters an oxygen-enriched side-blown furnace, where quartz sand is added to form slag, and charcoal and pine wood are used as reducing agents to reduce copper oxides. Natural gas and electricity provide energy for smelting, and oxygen is supplied for oxygen-enriched smelting (oxygen content 26-30%). The flue gas is treated by gravity dust collection, bag dust collection, and alkaline spray scrubbing. Domestic sewage is pretreated by grease traps and septic tanks. Anode furnace slag is returned to the oxygen-enriched side-blown furnace for recycling; oxygen-enriched furnace slag is temporarily stored for identification; and collected dust slag (hazardous waste HW48) is temporarily stored and then handed over to qualified units for disposal.