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A platform for research: civil engineering, architecture and urbanism
Alpha-type high-strength gypsum
The invention discloses a preparation method of alpha-type high-strength gypsum, and the method comprises the following steps of: 1) washing and desalting gypsum containing salt (NaCl) by using condensed water, and then performing filtering to obtain calcium sulfate dihydrate; 2) adding the calcium sulfate dihydrate obtained in the step 1) into a crystal modifier aqueous solution, and performing stirring to enable the crystal modifier aqueous solution to fully wet the calcium sulfate dihydrate for crystal transformation; 3) transferring the calcium sulfate dihydrate after crystal transformation in the step 2) into a buffer kettle for buffering; and 4) carrying out solid-liquid separation on the buffered sodium sulfate dihydrate obtained in the step 3); the salt-containing gypsum is obtained by preparing low-nitrate halogen, and the product obtained by the method is pure, high in grade and few in impurities, and the post-treatment process is simple.
本发明公开一种α型高强度石膏制备方法，这种方法包括1)冷凝水对含盐(NaCl)石膏进行洗涤除盐，再滤过得到二水硫酸钙；2)将步骤1)得到的二水硫酸钙加入转晶剂水溶液，搅拌使转晶剂水溶液充分润湿二水硫酸钙进行转晶；3)将步骤2)完成转晶后二水硫酸钙转入缓冲釜缓冲；4)将步骤3)得到的缓冲后的二水硫酸钠进行固液分离；所述含盐石膏为制备低硝卤中得到，通过本发明得到的产品纯、品位高、杂质少、后处理工艺简单。
Alpha-type high-strength gypsum
The invention discloses a preparation method of alpha-type high-strength gypsum, and the method comprises the following steps of: 1) washing and desalting gypsum containing salt (NaCl) by using condensed water, and then performing filtering to obtain calcium sulfate dihydrate; 2) adding the calcium sulfate dihydrate obtained in the step 1) into a crystal modifier aqueous solution, and performing stirring to enable the crystal modifier aqueous solution to fully wet the calcium sulfate dihydrate for crystal transformation; 3) transferring the calcium sulfate dihydrate after crystal transformation in the step 2) into a buffer kettle for buffering; and 4) carrying out solid-liquid separation on the buffered sodium sulfate dihydrate obtained in the step 3); the salt-containing gypsum is obtained by preparing low-nitrate halogen, and the product obtained by the method is pure, high in grade and few in impurities, and the post-treatment process is simple.
本发明公开一种α型高强度石膏制备方法，这种方法包括1)冷凝水对含盐(NaCl)石膏进行洗涤除盐，再滤过得到二水硫酸钙；2)将步骤1)得到的二水硫酸钙加入转晶剂水溶液，搅拌使转晶剂水溶液充分润湿二水硫酸钙进行转晶；3)将步骤2)完成转晶后二水硫酸钙转入缓冲釜缓冲；4)将步骤3)得到的缓冲后的二水硫酸钠进行固液分离；所述含盐石膏为制备低硝卤中得到，通过本发明得到的产品纯、品位高、杂质少、后处理工艺简单。
Alpha-type high-strength gypsum
一种α型高强度石膏
LIN YINGNAN (author) / DENG QIANG (author) / LI CHUNLIN (author) / SUN QILIN (author) / CHEN GUOHUA (author) / SONG XINXIN (author)
2021-06-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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