A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for preparing high-strength gypsum
The invention provides a method for preparing high-strength gypsum, and the method comprises the following steps of: carrying out crushing screening process (1) and/or conditioning process (2) on a solid material, then performing calcining in a pressurized fluidized calcining process (3) under the heat supply condition of a heat supply process (6), and drying the calcined material and/or the calcined material in a fluidized drying process (4) to obtain the high-strength gypsum, and performing storage in a storage process (5), setting a primary dust removal process (7), a back pressure process(8) and a secondary dust removal process (9) after the pressurized fluidized calcining process (3) to respectively maintain the pressure required by the pressurized fluidized calcining process (3) andensure that the tail gas emission reaches the standard. Water vapor and/or water are/is added in the pressurized fluidized calcining process (3) to regulate and control the partial pressure and temperature of the water vapor in the calcination process, and the method can be used for continuously producing the high-strength semi-hydrated gypsum, and is flexible to operate, convenient to regulate and stable in product quality.
本发明提供了一种制备高强度石膏的方法，所述方法包括固体物料经破碎筛分工序(1)和/或调理工序(2)后进入加压流态化煅烧工序(3)在供热工序(6)供热条件下进行煅烧，煅烧后物料和/或进入流态化干燥工序(4)干燥后得到高强度石膏，到储料工序(5)储存，且通过在加压流态化煅烧工序(3)后设置一次除尘工序(7)、背压工序(8)和二次除尘工序(9)分别维持加压流态化煅烧工序(3)所需的压力和保证尾气排放达标。在加压流态化煅烧工序(3)加入水蒸气和/或水调控煅烧过程水蒸气分压和温度，采用本发明的方法能连续的生产高强度的半水石膏，操作灵活，调节方便，产品质量稳定。
Method for preparing high-strength gypsum
The invention provides a method for preparing high-strength gypsum, and the method comprises the following steps of: carrying out crushing screening process (1) and/or conditioning process (2) on a solid material, then performing calcining in a pressurized fluidized calcining process (3) under the heat supply condition of a heat supply process (6), and drying the calcined material and/or the calcined material in a fluidized drying process (4) to obtain the high-strength gypsum, and performing storage in a storage process (5), setting a primary dust removal process (7), a back pressure process(8) and a secondary dust removal process (9) after the pressurized fluidized calcining process (3) to respectively maintain the pressure required by the pressurized fluidized calcining process (3) andensure that the tail gas emission reaches the standard. Water vapor and/or water are/is added in the pressurized fluidized calcining process (3) to regulate and control the partial pressure and temperature of the water vapor in the calcination process, and the method can be used for continuously producing the high-strength semi-hydrated gypsum, and is flexible to operate, convenient to regulate and stable in product quality.
本发明提供了一种制备高强度石膏的方法，所述方法包括固体物料经破碎筛分工序(1)和/或调理工序(2)后进入加压流态化煅烧工序(3)在供热工序(6)供热条件下进行煅烧，煅烧后物料和/或进入流态化干燥工序(4)干燥后得到高强度石膏，到储料工序(5)储存，且通过在加压流态化煅烧工序(3)后设置一次除尘工序(7)、背压工序(8)和二次除尘工序(9)分别维持加压流态化煅烧工序(3)所需的压力和保证尾气排放达标。在加压流态化煅烧工序(3)加入水蒸气和/或水调控煅烧过程水蒸气分压和温度，采用本发明的方法能连续的生产高强度的半水石膏，操作灵活，调节方便，产品质量稳定。
Method for preparing high-strength gypsum
一种制备高强度石膏的方法
ZHU QINGSHAN (author) / ZHANG MEIJU (author)
2021-02-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Method for preparing high-strength gypsum powder from waste gypsum
| European Patent Office | 2021
Method for preparing alpha-type high-strength gypsum from desulfurized gypsum
| European Patent Office | 2024
Method for preparing high-strength ceramic mold gypsum powder from desulfurized gypsum
| European Patent Office | 2020
Method for preparing high-strength gypsum from phosphogypsum
| European Patent Office | 2022
Method for preparing high-strength building gypsum through chemical modification of titanium gypsum
| European Patent Office | 2022