Sourced conceptual inventory per tonne of grey clinker: raw meal and calcination CO2 from IPCC default clinker chemistry, fuel and stack emissions from the EU CLM BREF, petroleum coke as the fuel (ASSUMED). No flowsheet; not reviewed.
Portland cement clinker in a dry rotary kiln with cyclone preheater and precalciner
Sourced conceptual inventory per tonne of grey clinker: raw meal and calcination CO2 from IPCC default clinker chemistry, fuel and stack emissions from the EU CLM BREF, petroleum coke as the fuel (ASSUMED). No flowsheet; not reviewed.
Research outputNot engineering advice and not an approved design: do not use it for construction, operation or safety decisions. What this means
Overview
- Capacity
- per tonne of clinker (the dataset's basis); no plant size
What goes in and out
In
- LimestoneFeedstockcounted as its CaCO3 only (model)
- Clay, shale and raw-meal correctivesFeedstockclay, shale and correctives, counted as their oxides only (model)
- Petroleum cokeFeedstockkiln fuel in kWh by net calorific value (so the fuel energy KPI can be checked; 1 kWh = 3.6 MJ / ncv_pc kg); 100 % petroleum coke ASSUMED
Out
- Portland cement clinkerMain product
- Carbon dioxideEmissioncalcination CO2 in the kiln gas, about 0.52 t/t; with the fuel CO2 (emission:CO2-fuel) the stream a carbon capture unit would treat
Utilities: Electricity (raw meal and fuel grinding and the kiln line; CSI/ECRA reference plant)
Life cycle assessment
No footprint assessed yet; the process is part of the life-cycle inventory below.
In the open LCI database (cheme-as-code-atlas-preview-a3c52e4) as Portland cement clinker (grey) Preliminary.
Download it for Brightway, openLCA and other tools.
In the LCI database: system model, datasets and KPIs against the benchmarks
In the LCI database
- Status
- Preliminary 2 unmapped exchanges. Some exchanges have no background mapping yet: they are exported unlinked and count no burden, so the inventory is incomplete.
- System model
- attributional, cut-off (methodology 1.1.0)
- Allocation
- mass (single-output, from default) · product:clinker 100 %
- Allocation findings
- none
- Change report
- Not available: this build has no change report against an earlier release.
- Dataset pages
- Portland cement clinker (grey) Preliminary
KPI benchmark positions
| KPI | Value | Reference range | Position |
|---|---|---|---|
| Electricity of raw meal preparation and the kiln line per t of clinker No independent open range per t of clinker found (2026-11-05). Read: CLM BREF section 1.3.3.2 (90 to 150 kWh per t of cement only, which needs a split and a clinker factor to compare); CSI/ECRA 2017, Paper No. 2 (shares of the plant's electricity) and Annex II (70 kWh/t clinker, the dataset's own source, so not a check). | – kWh/t | not available | not evaluated |
| Kiln fuel energy (net calorific value) per t of clinker | – MJ/t | 3,100 to 3,500 MJ/t | not evaluated |
| Direct fossil CO2 (calcination and kiln fuel) per t of clinker | – kg/t | 900 to 1,000 kg/t | not evaluated |
| Calcination CO2 per t of clinker | – kg/t | 536 to 536 kg/t | not evaluated |
| Raw meal (dry) per t of clinker | – t/t | 1.55 to 1.55 t/t | not evaluated |
Maturity and review
Design maturity Concept (claimed): An idea or first flowsheet; numbers are rough. No independent engineering review yet. Automated checks passing is not a review.
Calculation maturity, from the checked evidenceNot assessed
The process has no maturity report (cheme maturity, checks/maturity.json), so no calculation maturity is established.
No level shownThe design maturity (Concept) is the manifest's claim, not evidence. A level appears here once the process's repository holds a current report from
cheme maturity --write.Artifact completeness
Which deliverables exist. They never raise a calculation maturity level: a drawing from unchecked numbers is still unchecked.
Not reported without a maturity report.
Independent review
Not independently reviewed
No independent engineering review yet. Automated checks passing is not a review.
Set by people only. Reaching a calculation maturity level or passing automated checks is not an independent review or an approval.
Where the evidence comes from
- Report
processes/cement-clinker-1/checks/maturity.json(not in the library)- Method
- How ChemE-as-Code checks the levels (requirement by requirement)
Open items
0 open items · 0 closed
New action itemNew engineering holdNew technical queryNew design changeAll issues
Sources
- Library version
- a3c52e4 (process last changed in a3c52e4)
- Data
- Catalog record (JSON) · CC-BY-4.0
- Files
- View the files on GitHub · change history and authors
References
- Schorcht, F., Kourti, I., Scalet, B. M., Roudier, S., Delgado Sancho, L. (2013) Best Available Techniques (BAT) Reference Document for the Production of Cement, Lime and Magnesium Oxide. JRC Reference Report EUR 26129 EN (JRC83006), chapter 1 and BAT conclusions section 4.2 · doi:10.2788/12850
- IPCC (2006) 2006 IPCC Guidelines for National Greenhouse Gas Inventories, Vol. 3 Industrial Processes and Product Use, ch. 2 Mineral Industry Emissions, section 2.2 (cement)
- IPCC (2006) 2006 IPCC Guidelines for National Greenhouse Gas Inventories, Vol. 2 Energy, ch. 1 Introduction (Tables 1.2 and 1.4) and ch. 2 Stationary Combustion (Table 2.3)
- CSI and ECRA (2017) Development of State of the Art Techniques in Cement Manufacturing: Trying to Look Ahead (CSI/ECRA Technology Papers 2017), WBCSD Cement Sustainability Initiative and European Cement Research Academy, Annex II reference plant
How to cite
For the data, cite the Process Atlas paper; for the platform that builds and checks it, the ChemE-as-Code paper.
Schweidtmann, A. M. & Weber, J. M. (2026, in preparation). Process Atlas: an open, git-native, reproducible library and life cycle inventory of chemical processes (working title).
For this process: "Portland cement clinker in a dry rotary kiln with cyclone preheater and precalciner", ChemE-as-Code process library, version a3c52e4.
BibTeX
@unpublished{schweidtmann_process_atlas,
author = {Schweidtmann, Artur M. and Weber, Jana M.},
title = {{Process Atlas: an open, git-native, reproducible library and life cycle inventory of chemical processes (working title)}},
year = {2026},
url = {https://atlas.cheme-as-code.org},
note = {in preparation}
}Schweidtmann, A. M. (2026). ChemE-as-Code: An Open-Source Platform for Agentic AI in Chemical Engineering. arXiv:2611.07947. https://doi.org/10.48550/arXiv.2611.07947
BibTeX
@misc{schweidtmann_cheme_as_code,
author = {Schweidtmann, Artur M.},
title = {{ChemE-as-Code: An Open-Source Platform for Agentic AI in Chemical Engineering}},
year = {2026},
eprint = {2611.07947},
archivePrefix = {arXiv},
doi = {10.48550/arXiv.2611.07947},
url = {https://arxiv.org/abs/2611.07947}
}