China Nonferrous Metallurgy

The establishment of a carbon dioxide emission accounting method in the industrial industry is of important guiding significance for dealing with climate change. Based on the standardised development of carbon emission accounting in the recycled lead industry, the carbon emission accounting method of the recycled lead industry has been sorted out and determined. With the clean recycling technology of waste lead batteries (automatic crushing and sorting-lead paste pre-desulphurisation-low-temperature melting Refining) is represented, and carbon emissions are accounted for the whole process with each recycling section as the accounting unit. We are committed to filling the gap in the carbon emission evaluation standards in the field of recycled lead, which is conducive to guiding and standardising the production and development of the recycled lead industry. The accounting results show that the processing capacity of waste lead batteries is 150000t/a of mechanical crushing and sorting-lead paste pre-desulphurisation-low-temperature smelting of recycled lead clean production process, waste lead batteries in the crushing and sorting stage, lead grid melting stage, crude lead electrolytic refining stage, lead paste pre-desulphurisation stage, desulphurisation lead paste low-temperature melting stage carbon The emissions are 0.380t CO₂ h, 0.460t CO₂ h, 0.860t CO₂ h, 1.900t CO₂ h, 5.047t CO₂ h respectively. These carbon dioxide emission indicators can also be used as the same industry and similar technology enterprises. The carbon dioxide emission accounting coefficient of the industry. Based on the results of carbon emission accounting, the characteristics of carbon emissions in the recycled lead industry are analysed. Direct emissions caused by fuel combustion are the largest source of carbon emissions in the recycled lead cleaning process, accounting for 31.57% of the total carbon emissions. The low-temperature smelting section is the largest carbon emission section of the recycled lead cleaning process, and its carbon emissions account for 58.36% of the total carbon emissions.