Cradle to Gate
Identity ID
d8086357-a31c-410c-b7f3-23f40b7ef5ad
Materials
Associated ID
8b20e329-6530-4b59-b5d2-6918073111e9
Included activities starts
Included activities ends
Description
This dataset represents/describes the production situation of cement clinker prepared by the new dry-process rotary kiln technology. The production process includes clinker generation, and takes into account waste heat power generation and the water recycling process. The main data are sourced from public literature and official standards. Information on the emission inventory data:
1. For the emissions of major pollutants such as CO2, calculated values taken from public literature are used.
2. For the emissions of major pollutants such as SO2, NOx, dioxins, hydrogen chloride, fluorides and heavy metal elements, measured values taken from public literature are used.
3. For the emissions of PM (≤2.5 μm), PM (2.5-10 μm) and PM (≥10 μm), estimation is made based on the total particulate matter value and emission coefficients from public literature.
4. For the emissions of wastewater and inert substances, estimation is made based on the principle of material balance.
5. All emission quantities take into account the discharge standards of the Technical Guidelines for Accounting of Pollution Source Intensity in China's Cement Industry.
Activity Description
The production system boundary of this product is the entire stage of cement clinker production, including raw meal preparation, clinker burning, flue gas denitrification, particulate matter removal, and flue gas desulfurization. The process used can basically realize the full cycle of water, and part of the loss is treated as non-recyclable waste.
Process Description
Portland cement clinker is a granular solid formed by mixing calcareous raw materials, clay raw materials, and a small amount of corrective raw materials in appropriate proportions, calcining at high temperatures until partially melted, and then cooling. It is the main raw material for cement production, and can be ground together with an appropriate amount of gypsum and mixed materials to prepare various types of cement.
Time period
2013
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The new dry rotary kiln process is the core technology of modern cement production. It uses a suspended preheater (SP) or a precalciner (NSP) combined with rotary kiln calcination to achieve high efficiency, low consumption and low emission cement clinker production.