A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Active magnesium oxide and preparation method thereof
The invention discloses active magnesium oxide and a preparation method thereof, and relates to the technical field of magnesium oxide preparation. The method comprises the following steps that first magnesium ore is subjected to calcination dissociation, enhanced leaching and carbonization separation, and then calcium carbonate and an active low-calcium magnesium-rich solution are obtained; carrying out calcining dissociation and mechanical fine grinding on the second magnesium ore to obtain a fine material, or directly carrying out mechanical fine grinding on the second magnesium ore to obtain the fine material; the active low-calcium magnesium-rich liquid is pumped into a hydration activation tank, stirring is started, then the fine material is conveyed to the hydration activation tank, the active low-calcium magnesium-rich liquid and the fine material are subjected to a hydration reaction, and composite magnesium salt is formed; and drying and scattering the composite magnesium salt, conveying to a calcining furnace, calcining, cooling and spirally discharging to obtain the active magnesium oxide. The magnesium oxide prepared by the method is moderate in density, rich in active sites and good in dispersity, has excellent adsorption, hydration and ionization properties, has remarkable effect and cost advantages as an alkaline precipitator, and is beneficial to market popularization and application of high-activity magnesium oxide products in the fields of environmental protection and metallurgy.
本发明公开了一种活性氧化镁及其制备方法，涉及氧化镁制备技术领域。该方法包括如下步骤：将第一镁矿石经煅烧解离、强化浸出和碳化分离后得到碳酸钙和活性低钙富镁液；将第二镁矿石经煅烧解离和机械细磨得到细料，或者将第二镁矿石直接机械细磨得到细料；将活性低钙富镁液泵入水化活化槽，开启搅拌再将细料输送至水化活化槽，活性低钙富镁液与细料发生水化反应并形成复合镁盐；将复合镁盐干燥并打散后输送到煅烧炉，经煅烧、冷却螺旋出料得到活性氧化镁。该方法制得的氧化镁密度适中、活性位点丰富、分散性好，拥有优异的吸附、水化及电离性能，作为碱性沉淀剂效果和成本优势显著，有利于高活性氧化镁产品在环保与冶金领域的市场推广及应用。
Active magnesium oxide and preparation method thereof
The invention discloses active magnesium oxide and a preparation method thereof, and relates to the technical field of magnesium oxide preparation. The method comprises the following steps that first magnesium ore is subjected to calcination dissociation, enhanced leaching and carbonization separation, and then calcium carbonate and an active low-calcium magnesium-rich solution are obtained; carrying out calcining dissociation and mechanical fine grinding on the second magnesium ore to obtain a fine material, or directly carrying out mechanical fine grinding on the second magnesium ore to obtain the fine material; the active low-calcium magnesium-rich liquid is pumped into a hydration activation tank, stirring is started, then the fine material is conveyed to the hydration activation tank, the active low-calcium magnesium-rich liquid and the fine material are subjected to a hydration reaction, and composite magnesium salt is formed; and drying and scattering the composite magnesium salt, conveying to a calcining furnace, calcining, cooling and spirally discharging to obtain the active magnesium oxide. The magnesium oxide prepared by the method is moderate in density, rich in active sites and good in dispersity, has excellent adsorption, hydration and ionization properties, has remarkable effect and cost advantages as an alkaline precipitator, and is beneficial to market popularization and application of high-activity magnesium oxide products in the fields of environmental protection and metallurgy.
本发明公开了一种活性氧化镁及其制备方法，涉及氧化镁制备技术领域。该方法包括如下步骤：将第一镁矿石经煅烧解离、强化浸出和碳化分离后得到碳酸钙和活性低钙富镁液；将第二镁矿石经煅烧解离和机械细磨得到细料，或者将第二镁矿石直接机械细磨得到细料；将活性低钙富镁液泵入水化活化槽，开启搅拌再将细料输送至水化活化槽，活性低钙富镁液与细料发生水化反应并形成复合镁盐；将复合镁盐干燥并打散后输送到煅烧炉，经煅烧、冷却螺旋出料得到活性氧化镁。该方法制得的氧化镁密度适中、活性位点丰富、分散性好，拥有优异的吸附、水化及电离性能，作为碱性沉淀剂效果和成本优势显著，有利于高活性氧化镁产品在环保与冶金领域的市场推广及应用。
Active magnesium oxide and preparation method thereof
一种活性氧化镁及其制备方法
WANG QINGWEI (author) / WEN BO (author) / XU FUQIANG (author) / TAN XIAOLIN (author) / WANG HAO (author) / HUANG XIAN (author) / YAO QIONGYU (author) / LI XIA (author) / MAO SIMENG (author)
2025-01-07
Patent
Electronic Resource
Chinese
| European Patent Office | 2020
Magnesium oxide-based masonry and preparation method thereof
| European Patent Office | 2024
Magnesium oxide foamed ceramic and preparation method thereof
| European Patent Office | 2021