Process information
| Key Data Set Information | |
| Location | CQ-CN |
| Geographical representativeness description | A factory in Chongqing |
| Name |
|
| Use advice for data set | Users of the data set should focus solely on the carbon footprint of cement production, specifically considering the emission factors corresponding to the CO2 emissions. It is important to note that the carbon footprint covered here does not include other greenhouse gases. Special attention must be paid to the factory's use of alternative constituents when calculating the carbon footprint because the emissions profile may differ from conventional cement production. Ensure consistent accounting for such emissions if comparing with other data sets or when integrating into larger life cycle assessments. |
| Technical purpose of product or process | The data set describes cement production incorporating 21-35% alternative constituents derived from mixed solid wastes, which include slag, fly ash, gypsum powder, coal ash, blended stones, and boiler slag. Suitable applications of this particular cement type might be in construction projects where such alternative compositions are permitted and may contribute to sustainable building practices due to the utilization of waste materials. |
| Classification |
Class name
:
Hierarchy level
|
| General comment on data set | The main sources of carbon emissions in cement production are clinker calcination and direct and indirect combustion of fuels. The carbon footprint of production mainly includes the carbon footprint of direct combustion of fuels, electricity consumption, physical and chemical reactions of raw materials, and clinker calcination. |
| Copyright | No |
| Owner of data set | |
| Quantitative reference | |
| Reference flow(s) | |
| Technological representativeness | |
| Technology description including background system | There are nearly 170 cement enterprises in Chongqing, and the total output of cement in 2014 was nearly 70 million t. At present, the main raw materials of cement in Chongqing are limestone, natural gypsum and sandstone and mixed stones, accounting for about 90%, 5% and 3% respectively.More than 99% of greenhouse gas emissions are CO2, so "cement carbon footprint" only involves CO2 carbon footprint and does not include other greenhouse gases.Solid waste includes slag, fly ash, gypsum powder, coal slag, mixed gravel, and boiler slag. |
| Flow diagram(s) or picture(s) | |
| Mathematical model | |
| Model description | The carbon footprint of production in Chongqing cement plants mainly includes the carbon footprint of direct combustion of fuel, the carbon footprint of electricity consumption, the physical and chemical reactions of raw materials and clinker calcination, etc.The main sources of carbon emissions in cement production are: first, clinker calcination; second, carbon emissions from direct and indirect combustion of fuel. More than 99% of the greenhouse gases emitted are CO2, so the "cement carbon footprint" only involves the CO2 carbon footprint and does not include other greenhouse gases. |
Modelling and validation
Administrative information
Inputs and Outputs