Detailed Output Method (B2) - Corrected Calcination EF
Figure 7: Diagram of the detailed output method (B2)
To apply the detailed clinker-based output method, companies should use their plant-specific data related to clinker and dust leaving the kiln system:
- The analysis of the CaO and MgO content of clinker and the input of raw materials is required for determining a corrected calcination emissions factor (EF) in the auxiliary sheet CalcB2.
- The CO2 emissions resulting from the calcination of bypass dust and cement kiln dust (CKD) leaving the kiln system are accounted for in the Plant sheet, as described for the simple output method (B1).
Please also see the Protocol Guidance Document (Chapter 3.4).
Correct calculation of the CO2 emission factor for the calcination of raw materials:
- Lines 700-734 calculate the amount of CaO and MgO that is contained in the clinker. Data entered in must represent all clinker produced to ensure completeness of reporting.
- Lines 740-774 calculate the amount of CaO and MgO in the clinker which stems from non-carbonate sources. Only pre-calcined raw materials entering the kiln (e.g. fly ash, slag) and natural raw materials with relevant content of non-carbonate CaO and MgO must be reported here. Recycled dust should not be counted.
- Lines 780-804 calculate the amount of Ca and Mg in the clinker which stems from silicate sources. Only raw materials entering the kiln and raw materials with relevant content of Ca-silicate and Mg-silicate must be reported here. Recycled dust should not be counted.
- Lines 810-813 automatically calculate the CO2 emissions based on the amounts of CaO and MgO found in clinker and correct them for non-carbonate and silicate sources of CaO and MgO.
Please note:
If that raw material inputs contain significant amounts of carbonates other than CaCO3, MgCO3 and CaMg(CO3)2, such as e.g. FeCO3, MnCO3, Na2CO3, K2CO3, then a CO2 equivalent should be added to the MgO content of clinker for the CO2 emissions from calcination of these carbonates in order to assure complete reporting of CO2 emissions.
Calculation Details
Use the corrected calcination emission factor from line820 as input data in the Plant sheet section Data for Detailed Input Method (B2).
Where to put the results from the calcination sheet
Please see task Integrate the results of the Calcination sheet into the Plant sheet for further information on how to transfer the results from the output line(s) of your calculation from a calcination sheet into the corresponding Plant sheet.
Please note that the calcination sheet(s) will not be checked by the automatic validation tool.
See Also