A platform for research: civil engineering, architecture and urbanism
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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 dry method. The method comprises the following steps: S1, crushing and grinding high-grade limestone to obtain a powdery object, putting the powdery object into a crucible, adding a lime fluxing agent, uniformly mixing, and adding into a high-temperature furnace to obtain high-activity lime; s2, adding the high-activity lime obtained in the step S1 into a high-speed stirrer, adding a digestion accelerant and a dispersing agent, stirring to obtain modified active lime, adding water, carrying out dry digestion, continuously stirring during digestion, aging after digestion, and discharging; and S3, feeding into a jet mill, and depolymerizing to obtain calcium hydroxide. According to the method for preparing the calcium hydroxide with the high specific surface area through the dry method, by improving the preparation method of the calcium hydroxide, the produced calcium hydroxide has the advantages of being high in activity, good in dispersity and small in particle size, the specific surface area ranges from 40 m < 2 >/g to 60 m < 2 >/g, and the market prospect is wide.
本发明涉及氢氧化钙制备技术领域，尤其涉及一种干法制备高比表面的氢氧化钙方法。步骤如下：S1：对高品位的石灰石进行破碎、研磨制备得到粉状物体，放入坩埚中，加入石灰助熔剂，混合均匀后，加入到高温炉，得到高活性石灰；S2：将S1步骤得到的高活性石灰加入到高速搅拌机中，加入消化促进剂和分散剂，搅拌后，得到改性好的活性石灰，再加入水进行干法消化，消化时搅拌不停，消化后，进行陈化，然后出料；S3：进入气流粉碎机，进行解聚，得到氢氧化钙。本发明提供的一种干法制备高比表面的氢氧化钙方法，通过对氢氧化钙制备方法的改进，能够让生产的氢氧化钙具有活性高，分散性好、粒径较小，比表面积为40～60m2/g，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 dry method. The method comprises the following steps: S1, crushing and grinding high-grade limestone to obtain a powdery object, putting the powdery object into a crucible, adding a lime fluxing agent, uniformly mixing, and adding into a high-temperature furnace to obtain high-activity lime; s2, adding the high-activity lime obtained in the step S1 into a high-speed stirrer, adding a digestion accelerant and a dispersing agent, stirring to obtain modified active lime, adding water, carrying out dry digestion, continuously stirring during digestion, aging after digestion, and discharging; and S3, feeding into a jet mill, and depolymerizing to obtain calcium hydroxide. According to the method for preparing the calcium hydroxide with the high specific surface area through the dry method, by improving the preparation method of the calcium hydroxide, the produced calcium hydroxide has the advantages of being high in activity, good in dispersity and small in particle size, the specific surface area ranges from 40 m < 2 >/g to 60 m < 2 >/g, and the market prospect is wide.
本发明涉及氢氧化钙制备技术领域，尤其涉及一种干法制备高比表面的氢氧化钙方法。步骤如下：S1：对高品位的石灰石进行破碎、研磨制备得到粉状物体，放入坩埚中，加入石灰助熔剂，混合均匀后，加入到高温炉，得到高活性石灰；S2：将S1步骤得到的高活性石灰加入到高速搅拌机中，加入消化促进剂和分散剂，搅拌后，得到改性好的活性石灰，再加入水进行干法消化，消化时搅拌不停，消化后，进行陈化，然后出料；S3：进入气流粉碎机，进行解聚，得到氢氧化钙。本发明提供的一种干法制备高比表面的氢氧化钙方法，通过对氢氧化钙制备方法的改进，能够让生产的氢氧化钙具有活性高，分散性好、粒径较小，比表面积为40～60m2/g，具有广泛的市场前景。
Dry method for preparing calcium hydroxide with high specific surface area
一种干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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