WO 2023/175237 A1

Method for producing reusable gypsum material and an arrangement

(22) 14.03.2023

(43) 21.09.2023

(57) The invention relates to a method for producing a reusable gypsum material (10) from 20 a construction waste material comprising gypsum waste (20) comprising the steps a) simultaneously removing paper material from the gypsum waste (20) and crushing the gypsum waste (20) to a grain size of 0.1- 50 ram for providing a separated gypsum material (30) from the gypsum waste (20); and b) cleaning the separated gypsum material (30) by removing impurity particles from the separated gypsum material (30) for providing the reusable gypsum material (10) from the separated gypsum material (30). The invention also relates to an arrangement for making reusable gypsum material (10) from construction waste material comprising gypsum waste (20).

(71) Raxe Recycling Oy, Espoo (Fl)

(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, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, ‚TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)

x

Related articles:

Issue 7-8/2018 KR101839251 (B1)

Alkali gypsum and method for producing alkaline gypsum using de-sulfurized slag admixture slagcement and concrete composition comprising the alkali gypsum

(22) 20.12.2016 (43) 26.04.2018 (57) The present invention relates to a method for producing an alkali gypsum for admixture of ordinary cement or slag cement using a desulfurized slag fine powder...

more
Issue 11/2018 HUE037124 (T2)

Gypsum plasterboard production plant and method for producing a gypsum plasterboard

(22) 26.06.2013 (43) 28.08.2018 (57) Summary of the corresponding patent WO2014206452 (A1): The invention relates to a gypsum plasterboard production plant, comprising at least one circulating...

more
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...

more
Issue 11/2018 EP3368492 (A1)

Method for producing a cement clinker substitute which is made primarily of calcined clay

(22) 21.10.2016 (43) 05.09.2018 (57) Summary of the corresponding patent WO2017072047 (A1): This invention relates to water-resistant gypsum products manufactured with water-based emulsions comprising...

more
Issue 6/2021 UA124000 (C2)

Additive for gypsum building materials

(22) 09.09.2016 (43) 07.07.2021 (57) The invention relates to additives for producing shaped gypsum articles, shaped gypsum articles comprising these additives, and methods for producing these shaped...

more