A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to the technical field of calcium hydroxide preparation, in particular to a method for preparing calcium hydroxide with a high specific surface area through a wet method. The method comprises the following steps: S1, crushing and grinding first-grade limestone to prepare powder, adding the powder into a crucible, adding a lime fluxing agent, uniformly mixing, and calcining in a high-temperature furnace; s2, adding water and a digestion accelerant into a digestion tank with a stirring function, starting stirring, adding lime into the digestion tank, continuously stirring during digestion, and stirring for a preset time when the digestion temperature rises to the highest temperature; and S3, removing impurities by adopting a vibrating screen, adding a dispersing agent and a surface treating agent, and then grinding by adopting a stirring and grinding machine. According to the method for preparing the calcium hydroxide with the high specific surface area through the wet method, through improvement of the method, the prepared calcium hydroxide powder has the advantages of being high in activity, good in dispersity, small in particle size, 40-70 m < 2 >/g in specific surface area, small in repose angle, capable of being stored in a warehouse, free of bonding, good in fluidity, environmentally friendly, safe and wide in market prospect.
本发明涉及氢氧化钙制备技术领域，尤其涉及一种湿法制备高比表面的氢氧化钙方法。步骤如下：S1：将一级石灰石通过破碎、研磨制备成粉状，加入坩埚中，加入石灰助熔剂，混合均匀，放入到高温炉煅烧；S2：在带搅拌的消化罐中加入水和消化促进剂，启动搅拌，加入石灰到消化罐中，消化时搅拌不停，待消化温度升到最高温时，搅拌预定时间；S3：采用振动筛除去杂质，加入分散剂和表面处理剂，再采用搅拌研磨机进行研磨。本发明提供的一种湿法制备高比表面的氢氧化钙方法，通过对方法的改进，让制备的氢氧化钙粉体，具有活性高，分散性好、粒径小，比表面积为40～70m2/g，安息角小，储存于料仓库中，不会粘结，流动性好，环保安全，具有广泛的市场前景。
The invention relates to the technical field of calcium hydroxide preparation, in particular to a method for preparing calcium hydroxide with a high specific surface area through a wet method. The method comprises the following steps: S1, crushing and grinding first-grade limestone to prepare powder, adding the powder into a crucible, adding a lime fluxing agent, uniformly mixing, and calcining in a high-temperature furnace; s2, adding water and a digestion accelerant into a digestion tank with a stirring function, starting stirring, adding lime into the digestion tank, continuously stirring during digestion, and stirring for a preset time when the digestion temperature rises to the highest temperature; and S3, removing impurities by adopting a vibrating screen, adding a dispersing agent and a surface treating agent, and then grinding by adopting a stirring and grinding machine. According to the method for preparing the calcium hydroxide with the high specific surface area through the wet method, through improvement of the method, the prepared calcium hydroxide powder has the advantages of being high in activity, good in dispersity, small in particle size, 40-70 m < 2 >/g in specific surface area, small in repose angle, capable of being stored in a warehouse, free of bonding, good in fluidity, environmentally friendly, safe and wide in market prospect.
本发明涉及氢氧化钙制备技术领域，尤其涉及一种湿法制备高比表面的氢氧化钙方法。步骤如下：S1：将一级石灰石通过破碎、研磨制备成粉状，加入坩埚中，加入石灰助熔剂，混合均匀，放入到高温炉煅烧；S2：在带搅拌的消化罐中加入水和消化促进剂，启动搅拌，加入石灰到消化罐中，消化时搅拌不停，待消化温度升到最高温时，搅拌预定时间；S3：采用振动筛除去杂质，加入分散剂和表面处理剂，再采用搅拌研磨机进行研磨。本发明提供的一种湿法制备高比表面的氢氧化钙方法，通过对方法的改进，让制备的氢氧化钙粉体，具有活性高，分散性好、粒径小，比表面积为40～70m2/g，安息角小，储存于料仓库中，不会粘结，流动性好，环保安全，具有广泛的市场前景。
Method for preparing calcium hydroxide with high specific surface area by wet process
一种湿法制备高比表面的氢氧化钙方法
BO LIQUN (author)
2024-02-06
Patent
Electronic Resource
Chinese
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