Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of ultrafine fly ash
The invention discloses a preparation method of ultrafine fly ash. The preparation method comprises the following steps: 1. carrying out primary filtration screening on a fly ash raw material, and selecting a high-purity fly ash raw material; 2, carrying out primary grinding and crushing treatment; 3, performing secondary filtering and screening, and selecting fly ash particles of 140-200 meshes; 4, performing high-temperature stirring for 25-30 min at the temperature of 60-70 DEG C; 5, adding a modifier, mixing, and stirring at a high temperature of 60-70 DEG C for 20-25 minutes; 6, carrying out filtration and dehydration treatment through an ultrafiltration membrane; 7, carrying out drying treatment at the temperature of 60-80 DEG C; 8, performing secondary grinding and smashing treatment, and performing cooling and flame-proof treatment while performing grinding; and 9, filtering and screening for three times to obtain the ultrafine fly ash with the granularity of 300-370 meshes. The preparation method is easy to implement, the preparation process is relatively stable, the ignition loss and oxygen content of the fly ash can be controlled, and the ultrafine fly ash can be prepared by a simple and stable production method.
本发明公开了一种超细粉煤灰的制备方法，包括以下步骤：步骤一，将粉煤灰原料进行一次过滤筛选，选取高纯度粉煤灰原料；步骤二，进行一次研磨粉碎处理；步骤三，进行二次过滤筛选，选取为140‑200目的粉煤灰颗粒；步骤四，进行高温搅拌，温度60‑70℃，时间25‑30min；步骤五，投入改性剂进行混合高温搅拌，温度60‑70℃，时间20‑25min；步骤六，通过超滤膜进行过滤脱水处理；步骤七，进行烘干处理，温度60‑80℃；步骤八，进行二次研磨粉碎处理，研磨的同时进行冷却防燃处理；步骤九，进行三次过滤筛选，得到颗粒度为300‑370目的超细粉煤灰。本发明的制备方法实施简单，制备流程较为稳定，粉煤灰烧失量和含氧量可得到控制，能够用简单、稳定的生产方法制得超细粉煤灰。
Preparation method of ultrafine fly ash
The invention discloses a preparation method of ultrafine fly ash. The preparation method comprises the following steps: 1. carrying out primary filtration screening on a fly ash raw material, and selecting a high-purity fly ash raw material; 2, carrying out primary grinding and crushing treatment; 3, performing secondary filtering and screening, and selecting fly ash particles of 140-200 meshes; 4, performing high-temperature stirring for 25-30 min at the temperature of 60-70 DEG C; 5, adding a modifier, mixing, and stirring at a high temperature of 60-70 DEG C for 20-25 minutes; 6, carrying out filtration and dehydration treatment through an ultrafiltration membrane; 7, carrying out drying treatment at the temperature of 60-80 DEG C; 8, performing secondary grinding and smashing treatment, and performing cooling and flame-proof treatment while performing grinding; and 9, filtering and screening for three times to obtain the ultrafine fly ash with the granularity of 300-370 meshes. The preparation method is easy to implement, the preparation process is relatively stable, the ignition loss and oxygen content of the fly ash can be controlled, and the ultrafine fly ash can be prepared by a simple and stable production method.
本发明公开了一种超细粉煤灰的制备方法，包括以下步骤：步骤一，将粉煤灰原料进行一次过滤筛选，选取高纯度粉煤灰原料；步骤二，进行一次研磨粉碎处理；步骤三，进行二次过滤筛选，选取为140‑200目的粉煤灰颗粒；步骤四，进行高温搅拌，温度60‑70℃，时间25‑30min；步骤五，投入改性剂进行混合高温搅拌，温度60‑70℃，时间20‑25min；步骤六，通过超滤膜进行过滤脱水处理；步骤七，进行烘干处理，温度60‑80℃；步骤八，进行二次研磨粉碎处理，研磨的同时进行冷却防燃处理；步骤九，进行三次过滤筛选，得到颗粒度为300‑370目的超细粉煤灰。本发明的制备方法实施简单，制备流程较为稳定，粉煤灰烧失量和含氧量可得到控制，能够用简单、稳定的生产方法制得超细粉煤灰。
Preparation method of ultrafine fly ash
一种超细粉煤灰的制备方法
ZHANG SHOUZHONG (Autor:in)
30.04.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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