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Method for medium-temperature thermal activation of coal gangue
The invention discloses a method for medium-temperature thermal activation of coal gangue, which comprises the following steps: by taking coal gangue and an activation admixture as raw materials, sequentially crushing, mixing and mechanically activating, homogenizing, forming, drying, roasting and medium-temperature thermal activation, cooling and grinding to obtain active powder. The coal gangue is adopted as a main body of the raw material, the activation admixture is added, the thermal activation temperature of the coal gangue is reduced to 1000 DEG C or below, the activity of the coal gangue is greatly excited, meanwhile, quartz minerals in the coal gangue form unsaturated residual bonds and generate active silicon dioxide in combination with mechanical activation, the activity of the coal gangue is further excited, and the coal gangue is prepared. According to the method, the activation rate of the coal gangue is increased, the volcanic ash activity of the prepared active powder reaches 75% or above, the purpose of treating waste with waste is achieved, the cost is reduced, and the active powder serves as a mineral admixture to be directly added in the concrete preparation process and has good application prospects.
本发明公开了一种煤矸石中温热活化的方法，以煤矸石与活化掺和剂为原料，依次进行破碎、混合机械活化、均化、成型、干燥、焙烧中温热活化、冷却和磨细制备得到活性粉体。本发明采用煤矸石作为原料的主体，通过添加活化掺和剂，将煤矸石的热活化温度降至1000℃以下，大大激发了煤矸石的活性，同时结合机械活化使得煤矸石中的石英类矿物形成不饱和残键，产生活性二氧化硅，进一步激发煤矸石的活性，提高了煤矸石的活化率，制备的活性粉体的火山灰活性达75％以上，实现了“废物治废”的目的，减低成本，该活性粉体在混凝土制备的过程中充当矿物掺和剂直接加入，具有良好的应用前景。
Method for medium-temperature thermal activation of coal gangue
The invention discloses a method for medium-temperature thermal activation of coal gangue, which comprises the following steps: by taking coal gangue and an activation admixture as raw materials, sequentially crushing, mixing and mechanically activating, homogenizing, forming, drying, roasting and medium-temperature thermal activation, cooling and grinding to obtain active powder. The coal gangue is adopted as a main body of the raw material, the activation admixture is added, the thermal activation temperature of the coal gangue is reduced to 1000 DEG C or below, the activity of the coal gangue is greatly excited, meanwhile, quartz minerals in the coal gangue form unsaturated residual bonds and generate active silicon dioxide in combination with mechanical activation, the activity of the coal gangue is further excited, and the coal gangue is prepared. According to the method, the activation rate of the coal gangue is increased, the volcanic ash activity of the prepared active powder reaches 75% or above, the purpose of treating waste with waste is achieved, the cost is reduced, and the active powder serves as a mineral admixture to be directly added in the concrete preparation process and has good application prospects.
本发明公开了一种煤矸石中温热活化的方法，以煤矸石与活化掺和剂为原料，依次进行破碎、混合机械活化、均化、成型、干燥、焙烧中温热活化、冷却和磨细制备得到活性粉体。本发明采用煤矸石作为原料的主体，通过添加活化掺和剂，将煤矸石的热活化温度降至1000℃以下，大大激发了煤矸石的活性，同时结合机械活化使得煤矸石中的石英类矿物形成不饱和残键，产生活性二氧化硅，进一步激发煤矸石的活性，提高了煤矸石的活化率，制备的活性粉体的火山灰活性达75％以上，实现了“废物治废”的目的，减低成本，该活性粉体在混凝土制备的过程中充当矿物掺和剂直接加入，具有良好的应用前景。
Method for medium-temperature thermal activation of coal gangue
一种煤矸石中温热活化的方法
TANG YUJIAO (author) / WANG XIN (author) / CAI HUI (author) / ZHENG WENHENG (author) / TONG RUIHUA (author) / LIANG DONG (author) / WANG DAN (author)
2023-10-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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