WO 2017/047467 A1

Gypsum heating method, gypsum heating device, and gypsum manufacturing method

(22) 07.09.2016

(43) 23.03.2017

(57) [Problem] To provide a gypsum heating method, a gypsum heating device, and a gypsum manufacturing method with which drying-firing performance is improved, large scale processing of gypsum is simplified, and miniaturization is possible. [Solution] A method for heating gypsum by using a heating device, wherein a rotary cylinder is rotated such that the critical speed ratio α defined by formula 1 and formula 2 reaches at least 15 % and less than 70 %, and the gypsum is heated. Formula 1: Vc = 2.21D1/2 Formula 2: α = V/Vc·100 In the formulas, Vc is the critical speed (m/s) of the rotary cylinder, D is the inner diameter (m) of the rotary cylinder, α is the critical speed ratio (%) of the rotary cylinder, and V is the rotational speed (m/s) of the rotary cylinder.

(71) Tsukishima Kikai Co., Ltd (JP)

x

Related articles:

Issue 2022-6 US 2022/0184848 A1

Pretreatment mixing and stirring device, gypsum slurry manufacturing apparatus, building board manufacturing apparatus, pretreatment calcined gypsum manufacturing method, gypsum slurry manufacturing method, building board manufacturing method

(22) 14.04.2020 (43) 16.06.2022 (57) A pretreatment mixing and stirring device, arranged at a stage prior to a slurry formation mixing and stirring device which forms a gypsum slurry by kneading a...

more
Issue 2016-4 US 2016/0052167 A1

Gypsum board manufacturing method and manufacturing device

(22) 24.03.2014 (43) 25.02.2016 (57) As a lower forming plate 8, a forming plate having: a lower plate main body 10 constituted from an electrically conduc­tive material; and a lower embedded...

more
Issue 2016-7-8 WO 2016/073393 A1

Microwave heating for gypsum manufacturing processes

(22) 03.11.2015 (43) 12.05.2016 (57) Methods of making calcium sulfate whiskers are provided. In one aspect, a method includes autoclaving a slurry of calcium sulfate hemihydrate and water to form...

more
Issue 2018-1-2 EP 3 255 367 A1

Device for manufacturing belite calcium sulfoaluminate ternesite clinker

(22) 10.06.2016 (43) 13.12.2017 (57) Device for manufacturing belite calcium sulfoaluminate ternesite clinker, comprising a rotary kiln (1) and a cooler (3), wherein a tempering device (2) is provided...

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