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Preparation method of calcium hydroxide with high specific surface area
The invention relates to a preparation method of calcium hydroxide with high specific surface area, which comprises the following steps: S1, calcining limestone: calcining limestone in a vacuum state at 1100-1200 DEG C for 30-35 minutes to obtain quick lime, and crushing; s2, digestion reaction: adding water into the calcined quick lime, and performing stirring reaction at 30-40 DEG C for 1-3 minutes to perform digestion reaction; and S3, drying: centrifugally dewatering, and drying at 150-300 DEG C to obtain calcium hydroxide with high specific surface area. According to the method, the digestion reaction is more sufficient, the particle size of the prepared calcium hydroxide is smaller and more uniform, and the specific surface area of the calcium hydroxide is larger than that of calcium hydroxide prepared under other water-cement ratio conditions.
本发明涉及一种高比表面氢氧化钙的制备方法，包括以下步骤：S1石灰石煅烧：石灰石在真空状态下1100‑1200℃煅烧30‑35min，获得生石灰，进行粉碎；S2消化反应：取煅烧后得到的生石灰加入水，在30‑40℃下搅拌反应1‑3分钟进行消化反应；S3干燥：离心脱水，在150‑300℃下干燥，得到高比表面氢氧化钙。本发明消化反应进行的更充分，所制备的氢氧化钙粒径也更小且更均匀，其比表面积相较于其他水灰比条件下制备的氢氧化钙也更高。
Preparation method of calcium hydroxide with high specific surface area
The invention relates to a preparation method of calcium hydroxide with high specific surface area, which comprises the following steps: S1, calcining limestone: calcining limestone in a vacuum state at 1100-1200 DEG C for 30-35 minutes to obtain quick lime, and crushing; s2, digestion reaction: adding water into the calcined quick lime, and performing stirring reaction at 30-40 DEG C for 1-3 minutes to perform digestion reaction; and S3, drying: centrifugally dewatering, and drying at 150-300 DEG C to obtain calcium hydroxide with high specific surface area. According to the method, the digestion reaction is more sufficient, the particle size of the prepared calcium hydroxide is smaller and more uniform, and the specific surface area of the calcium hydroxide is larger than that of calcium hydroxide prepared under other water-cement ratio conditions.
本发明涉及一种高比表面氢氧化钙的制备方法，包括以下步骤：S1石灰石煅烧：石灰石在真空状态下1100‑1200℃煅烧30‑35min，获得生石灰，进行粉碎；S2消化反应：取煅烧后得到的生石灰加入水，在30‑40℃下搅拌反应1‑3分钟进行消化反应；S3干燥：离心脱水，在150‑300℃下干燥，得到高比表面氢氧化钙。本发明消化反应进行的更充分，所制备的氢氧化钙粒径也更小且更均匀，其比表面积相较于其他水灰比条件下制备的氢氧化钙也更高。
Preparation method of calcium hydroxide with high specific surface area
一种高比表面氢氧化钙的制备方法
CI LIJIE (author) / YUN HAILI (author) / WANG XIN (author) / LIU LEI (author) / CHEN DINGLONG (author)
2023-11-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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