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High-activity calcium hydroxide with high specific surface area and industrial preparation method thereof
The invention provides high-specific-surface-area high-activity calcium hydroxide and an industrial preparation method thereof. The industrial preparation method comprises the following steps: crushing quicklime and removing impurities to obtain quicklime powder, and mixing an active agent with industrial water to obtain mixed water; quicklime powder is added into the three-stage dry type digester through a quantitative belt feeder, meanwhile, distributed water is added into the three-stage dry type digester, particles of the quicklime powder in the three-stage dry type digester are fully expanded, moisture in the particles is rapidly gasified, and then the specific surface area of the particles can be further increased; reacting to obtain calcium hydroxide with high specific surface area and high activity; feeding the high-specific-surface and high-activity calcium hydroxide dry powder into a grader through a sealed pipeline for separation to obtain high-purity high-specific-surface and high-activity calcium hydroxide dry powder; the preparation process is simple, treatment of water after digestion and aging and dehydration treatment of calcium hydroxide are avoided, the investment cost is reduced, automatic control can be achieved in the production process, the operation safety performance is improved, no technical risk exists, and the method can be widely applied to industrial production.
本发明提供一种高比表高活性氢氧化钙及其工业化制备方法，生石灰破碎除杂得到生石灰粉末，活性剂与工业用水混合得到配水；通过定量皮带给料机向三级干式消化器中加入生石灰粉末，同时将配水加入三级干式消化器中，生石灰粉末在三级干式消化器内颗粒充分膨胀，颗粒内部水分迅速气化，进而能够使得其比表面积进一步增大，反应得到高比表高活性氢氧化钙；将高比表高活性氢氧化钙干粉经密封管道送入分级机分选得到高纯度的高比表高活性氢氧化钙干粉；本申请制备工艺简洁，没有消化后用水的处理和氢氧化钙的陈化、脱水处理，减少了投资成本，而且生产过程可实现自动化控制，提高了操作安全性能，无技术风险，可大量应用于工业生产中。
High-activity calcium hydroxide with high specific surface area and industrial preparation method thereof
The invention provides high-specific-surface-area high-activity calcium hydroxide and an industrial preparation method thereof. The industrial preparation method comprises the following steps: crushing quicklime and removing impurities to obtain quicklime powder, and mixing an active agent with industrial water to obtain mixed water; quicklime powder is added into the three-stage dry type digester through a quantitative belt feeder, meanwhile, distributed water is added into the three-stage dry type digester, particles of the quicklime powder in the three-stage dry type digester are fully expanded, moisture in the particles is rapidly gasified, and then the specific surface area of the particles can be further increased; reacting to obtain calcium hydroxide with high specific surface area and high activity; feeding the high-specific-surface and high-activity calcium hydroxide dry powder into a grader through a sealed pipeline for separation to obtain high-purity high-specific-surface and high-activity calcium hydroxide dry powder; the preparation process is simple, treatment of water after digestion and aging and dehydration treatment of calcium hydroxide are avoided, the investment cost is reduced, automatic control can be achieved in the production process, the operation safety performance is improved, no technical risk exists, and the method can be widely applied to industrial production.
本发明提供一种高比表高活性氢氧化钙及其工业化制备方法，生石灰破碎除杂得到生石灰粉末，活性剂与工业用水混合得到配水；通过定量皮带给料机向三级干式消化器中加入生石灰粉末，同时将配水加入三级干式消化器中，生石灰粉末在三级干式消化器内颗粒充分膨胀，颗粒内部水分迅速气化，进而能够使得其比表面积进一步增大，反应得到高比表高活性氢氧化钙；将高比表高活性氢氧化钙干粉经密封管道送入分级机分选得到高纯度的高比表高活性氢氧化钙干粉；本申请制备工艺简洁，没有消化后用水的处理和氢氧化钙的陈化、脱水处理，减少了投资成本，而且生产过程可实现自动化控制，提高了操作安全性能，无技术风险，可大量应用于工业生产中。
High-activity calcium hydroxide with high specific surface area and industrial preparation method thereof
一种高比表高活性氢氧化钙及其工业化制备方法
YAN DONGJIE (author) / ZHANG KAILE (author) / LI ZAOYUAN (author) / ZHAO JIAXUAN (author)
2022-11-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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