Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Device and method for producing II-type anhydrous gypsum by using industrial byproduct gypsum
The invention provides a device and method for producing II-type anhydrous gypsum by utilizing industrial byproduct gypsum. The device comprises a feeding unit, a drying unit, a calcining unit, a crystal control unit and a product collecting unit which are connected in sequence, and the crystal control unit comprises a crystal form controller. In the method for producing the II-type anhydrous gypsum by adopting the device, crystal water in dihydrate gypsum can be effectively removed through the calcining unit to obtain a II-type anhydrous gypsum crude product, and then accurate step-by-step crystal control can be realized by controlling the temperature and the retention time through the crystal form controller to obtain a II-type anhydrous gypsum product of which the AIIU crystal form proportion is greater than or equal to 98wt%. The water content is still less than or equal to 0.5% after the II-type anhydrous gypsum is stored for 6 months, so that the performance stability and high quality of the II-type anhydrite in application are ensured, and the storage time of the II-type anhydrous gypsum is greatly prolonged.
本发明提供了一种利用工业副产石膏生产II型无水石膏的装置及方法，所述装置包括依次连接的进料单元、烘干单元、煅烧单元、控晶单元与产品收集单元；所述控晶单元包括晶型控制器。在采用所述装置生产II型无水石膏的方法中，通过所述煅烧单元可以有效除去二水石膏中的结晶水，得到II型无水石膏粗品，后通过晶型控制器对温度与停留时间的控制，可以实现精准分步控晶，得到AⅡU晶型占比≥98wt.％的II型无水石膏产品，存放6个月后的含水率仍然≤0.5％，保证了Ⅱ型无水石膏应用的性能稳定性和高品质，大大提高了II型无水石膏的存放时间。
Device and method for producing II-type anhydrous gypsum by using industrial byproduct gypsum
The invention provides a device and method for producing II-type anhydrous gypsum by utilizing industrial byproduct gypsum. The device comprises a feeding unit, a drying unit, a calcining unit, a crystal control unit and a product collecting unit which are connected in sequence, and the crystal control unit comprises a crystal form controller. In the method for producing the II-type anhydrous gypsum by adopting the device, crystal water in dihydrate gypsum can be effectively removed through the calcining unit to obtain a II-type anhydrous gypsum crude product, and then accurate step-by-step crystal control can be realized by controlling the temperature and the retention time through the crystal form controller to obtain a II-type anhydrous gypsum product of which the AIIU crystal form proportion is greater than or equal to 98wt%. The water content is still less than or equal to 0.5% after the II-type anhydrous gypsum is stored for 6 months, so that the performance stability and high quality of the II-type anhydrite in application are ensured, and the storage time of the II-type anhydrous gypsum is greatly prolonged.
本发明提供了一种利用工业副产石膏生产II型无水石膏的装置及方法，所述装置包括依次连接的进料单元、烘干单元、煅烧单元、控晶单元与产品收集单元；所述控晶单元包括晶型控制器。在采用所述装置生产II型无水石膏的方法中，通过所述煅烧单元可以有效除去二水石膏中的结晶水，得到II型无水石膏粗品，后通过晶型控制器对温度与停留时间的控制，可以实现精准分步控晶，得到AⅡU晶型占比≥98wt.％的II型无水石膏产品，存放6个月后的含水率仍然≤0.5％，保证了Ⅱ型无水石膏应用的性能稳定性和高品质，大大提高了II型无水石膏的存放时间。
Device and method for producing II-type anhydrous gypsum by using industrial byproduct gypsum
一种利用工业副产石膏生产II型无水石膏的装置及方法
TANG SHAOLIN (Autor:in) / WAN JIANDONG (Autor:in) / PENG ZHUOFEI (Autor:in) / ZHANG JIAN (Autor:in) / CHEN YULAN (Autor:in) / TANG WEI (Autor:in) / TANG NAN (Autor:in) / SUN ZHENGSHEN (Autor:in) / SONG XIAOXIA (Autor:in) / CHEN JIAWEI (Autor:in)
27.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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