EP 3 656 750 A2

Use of carbon dioxide from and for cement

(22) 24.03.2020

(43) 27.05.2020

(57) Method of utilizing carbon dioxide containing gas arising as waste or by-product in one or more of the following industrial processes:

cement clinker production such as rotary kilns and/or calciner stages, oxyfuel kiln lines, or from separate calcination devices or indirect calcination of the calcium car-bonate,

carbon capture technologies, such as amine-based CO2 scrubber and membrane-based gas separation, for providing a useful carbonation product by one or more of the following production steps:

carbonation of concrete demolition waste, especially recycled concrete fines, for the production of SCM or calcite and active silica,

carbonation of industrial materials, e.g. fly ashes, slags and other, for the production of SCM or calcite and active silica,

carbonation of natural materials, e.g. olivine, serpentine, talc, MgO-containing minerals, and other, for the production of SCM or calcite and active silica, and

carbonation hardening of binders, wherein the production step is selected based on the amount of carbon dioxide in the carbon dioxide containing gas, the additional substances present in the carbon dioxide containing gas and a temperature and pressure of the carbon dioxide containing gas.

(71) HeidelbergCement AG, 69120 Heidelberg (DE)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES Fl FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR; Designated Extension States: BA ME; Designated Validation States: KH MA MD TN


Related articles:

Issue 4/2023 WO 2023/054239 A1

Method for fixing carbon dioxide, method for producing calcium carbonate, and method for utilizing waste gypsum board

(22) 26.09.2022 (43) 06.04.2023 (57) The present invention provides a method whereby carbon dioxide can be efficiently fixed and calcium carbonate, which is a valuable, can be efficiently produced...

Issue 7-8/2020 KR20200034144 (A)

Method for capturing storaging and using carbon dioxide in waste gas of cement production comprising the using of waste heat of cement calcination process 

(22) 21.09.2018 (43) 31.03.2020 (57) The present invention is a first step of cooling the exhaust gas containing carbon dioxide discharged from the cement kiln and sending it to an absorption tower...

Issue 7-8/2018 US2018131025 (A1)

Power producing gas separation system and method

(22) 02.11.2017 (43) 10.05.2018 (57) A power producing system adapted to be integrated with a flue gas generating assembly, the flue gas generating assembly including one or more of a fossil fueled...

Issue 02/2024 WO 2024/008350 A1

Method for manufacturing cement clinker and cement plant

(22) 08.05.2023 (43) 11.01.2023 (57) Method for manufacturing cement clinker comprising the steps: preheating a raw meal (rm) in a first preheater (1 ) using kiln off-gas to provide a partially...

Issue 8/2021 NUH ÇIMENTO SANAYI A.?.

Nuh’s journey towards total carbon dioxide neutrality

Turkey is responsible for 1.1% of the total global CO2 emissions whereas the Turkish Cement industry is responsible for 12% of the total CO2 emissions of Turkey. Since its inception in 1966, Nuh...