mixture

Portland cement clinker

Grey Portland cement clinker: calcium silicates and aluminates (alite, belite, aluminate and ferrite phases) with some free lime and MgO, about 65 % CaO (IPCC 2006 Vol. 3, section 2.2.1.2). Composition varies by plant. No composition recorded here: cement-clinker-1 carries its own model formula, with its sources.

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Made by

Portland cement clinker in a dry rotary kiln with cyclone preheater and precalcinerMain productConcept · not reviewed

Used by

No process in the Atlas uses this yet.

When a process with this chemical is added to the library, it appears here.

Routes compared

One route in the Atlas makes Portland cement clinker: nothing to compare yet. A comparison appears when a second route is added.

Per 1 kg of Portland cement clinker: inventory from each route's LCI dataset, unallocated; footprints per the functional unit of their own LCA.

Route	Tier, design maturity, review status	Geography, year	Energy	Feedstocks	Key emissions	Footprint	Comparability
Portland cement clinker in a dry rotary kiln with cyclone preheater and precalcinerdry process, rotary kiln with four to six cyclone stages, precalciner and grate cooler; kiln gas filtered (ESP or fabric filter); no carbon capture	Tier 1 (sourced conceptual)Design maturity: Concept (research)Not independently reviewedDataset review: unreviewed	RER, 2008	Kiln fuel, petroleum coke, as heat by net calorific value: 0.972 kWh Electricity: 0.07 kWh	Limestone, as its calcium carbonate: 1.18 kg Clay, shale and correctives, as their oxides: 0.357 kg	CO2 from calcination of the raw meal: 0.52 kg CO2 from burning the kiln fuel: 0.341 kg CH4 from fuel combustion: 0.0000105 kg N2O from fuel combustion: 0.0000021 kg NOx (as NO2) from the kiln stack: 0.000748 kg SO2 from the kiln stack: 0.000518 kg CO from the kiln stack: 0.00253 kg Kiln stack dust, below 2.5 um: 0.0000173 kg Kiln stack dust, 2.5 to 10 um: 0.0000138 kg Kiln stack dust, above 10 um: 0.00000345 kg Mercury from the kiln stack: 0.000000046 kg	no footprint	–

ISO 14044 requires a critical review (by a panel of interested parties, ISO/TS 14071) of a comparative assertion intended to be disclosed to the public. These routes are listed side by side for screening; a statement that one is better than another needs that review. None of these routes has had such a review.