WO 2024 127241 A1

Method of producing cement clinker from a source of calcium sulfate

(22) 12.12.2023

(43) 20.06.2024

(57) A method of producing cement clinker from a source of calcium sulfate, comprising - a first step of desulfurizing the source of calcium sulfate in the absence of a reducing agent in first reactor to obtain calcium oxide and sulfur dioxide and withdrawing the calcium oxide from the first reactor, and subsequently - a second step of adding silica, alumina and iron oxide to the calcium oxide to obtain a raw material mixture and calcining the raw material mixture in a second rector to obtain cement clinker.

(71) HOLCIM Technology Ltd (CH), 6300 Zug (CH)

(84) ARIPO (BW, CV, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SC, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FT, FR, GB, GR, HR, HU, TE, IS, IT, LT, LU. LV, MC, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE

x

Related articles:

Issue 05/2024 WO 2024/095140 A1

Method of producing cement clinker from a source of calcium sulfate

(22) 31.10.2023 (43) 10.05.2024 (57) A method of producing cement clinker from a source of calcium sulfate, comprising - a first step of calcining the source of calcium sulfate in the presence of a...

more
Issue 4/2022 EP 3 984 632 A1

Method and apparatus for producing desulfurizing agent, and method for removing sulfur dioxide from cement kiln exhaust gas

(22) 01.08.2019 (43) 20.04.2022 (57) [Problem] To provide a method and an apparatus for producing a desulfurizing agent in which good handleability is achieved; the water content is easily adjusted;...

more
Issue 3/2021 WO 2021/019754 A1

Method and apparatus for producing desulfurizing agent, and method for removing sulfur dioxide from cement kiln exhaust gas

(22) 01.08.2019 (43) 04.02.2021 (57) [Problem] To provide a method and an apparatus for producing a desulfurizing agent, and a method for removing sulfur dioxide from cement kiln exhaust gas, enabling...

more
Issue 11/2017 PL2744766 (T3)

Calciumsulfoaluminate cement or clinker comprising ternesite

(22) 16.07.2012 (43) 29.09.2017 (57) Summary of the corresponding patent EP2559674 (A1): Producing a hydraulically reactive clinker, comprises sintering a raw meal comprising calcium oxide, aluminum...

more
Issue 6/2016 US 2016/0102016 A1

Method for producing cement

(22) 30.04.2014 (43) 14.04.2016 (57) A method for producing calcium sulfoaluminate cement comprises the steps of providing thermal energy by combustion of sulphur and/or a sulphur-containing compound,...

more