EP3541765 (A1)

Process and apparatus for calcination of gypsum

(22) 18.11.2016

(43) 25.09.2019

(57) Summary of the corresponding patent WO2018091062 (A1): The invention pertains to a process for modifying gypsum, wherein a continuous feed of raw gypsum is provided; the water content of the raw gypsum is determined in the continuous feed by near infrared spectroscopy (NIR) measurement; the raw gypsum is calcined in a calcination unit at a fire rate to remove water from the raw gypsum and to obtain a continuous feed of calcined gypsum having a water content within a selected range; a water content of the calcined gypsum is determined by near infrared spectroscopy, and the fire rate is adjusted based on the water content of the raw gypsum and of the calcined gypsum. Further, the invention pertains to an  apparatus for performing said process.

(71) Knauf Gips KG (DE)

Related articles:

Issue 2018-9 WO 2018/091062 A1

Process and apparatus for calcination of gypsum

(22) 18.11.2016 (43) 24.05.2018 (57) The invention pertains to a process for modifying gypsum, wherein a continuous feed of raw gypsum is provided; the water content of the raw gypsum is determined in...

more
Issue 2019-4 US 2019/0016633 A1

Calcined gypsum treatment device and calcined gypsum treatment method

(22) 31.01.2017 (43) 17.01.2019 (57) A calcined gypsum treatment apparatus has an agitating type of cooler provided with a cooling region for cooling the calcined gypsum, and a moisture supplying...

more
Issue 2016-7-8 US 2016/0159692 A1

Method for producing nano-cement, and nano-cement

(22) 25.11.2015 (43) 09.06.2016 (57) The invention is related to nanocement production methods by modifying Portland cement, as well as to nanocement compositions. The nanocement production method...

more
Issue 2018-11 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 2017-5 US 2017/0073271 A1

Gypsum hardened body, gypsum panel, method for manufacturing gypsum hardened body, and method for manufacturing gypsum board

(22) 23.05.2014 (43) 16.03.2017 (57) A gypsum hardened body including a gypsum slurry that has been hardened is provided. The gypsum slurry is obtained by mixing calcined gypsum, calcium hydrogen...

more