Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Rice hull ash and preparation method thereof, rice hull ash geopolymer and preparation method thereof
The invention provides rice hull ash, a preparation method of the rice hull ash, a rice hull ash geopolymer and a preparation method of the rice hull ash geopolymer. The preparation method of the ricehull ash comprises the following steps: soaking rice hulls in an acid solution; taking out the rice husks, washing the rice husks to be neutral, drying the rice husks, and calcining the rice husks incalcining equipment at the temperature of 400-900 DEG C for 0.5-3 hours to obtain the rice husk ash. The invention discloses the preparation method of rice hull ash, K and other impurities hinderingrice hull combustion are removed through soaking treatment in an acid solution, the specific surface area of the rice hull ash is increased, the specific surface area is larger, the surface energy islarger, more active SiO2 is exposed, the volcanic ash activity of the rice hull ash is remarkably improved, and the content of silicon dioxide in the rice hull is remarkably increased and can reach 99.5% or above to the maximum. The rice husks are subjected to high-temperature calcination treatment, so that the content of crystalline silicon dioxide can be obviously reduced, the generation of amorphous silicon dioxide is promoted, the chemical activity is improved, and meanwhile, residual carbon is reduced.
本发明提供了一种稻壳灰及其制备方法、稻壳灰地聚物及其制备方法，稻壳灰的制备方法包括以下步骤：将稻壳置于酸溶液中浸泡；取出稻壳洗涤至中性，干燥后，然后置于煅烧设备中于温度为400～900℃的下煅烧0.5～3h即制备得到稻壳灰。发明的稻壳灰制备方法，酸溶液中浸泡处理去除了K等阻碍稻壳燃烧的杂质，增大了稻壳灰的比表面积，比表面积越大，表面能越大，暴露出更多活性SiO2，显著提高稻壳灰的火山灰活性，显著提升稻壳中二氧化硅的含量，最高可达99.5％以上。通过对稻壳进行高温煅烧处理，可明显降低晶体二氧化硅的含量，促进无定型二氧化硅的生成，提高化学活性，同时降低残余碳。
Rice hull ash and preparation method thereof, rice hull ash geopolymer and preparation method thereof
The invention provides rice hull ash, a preparation method of the rice hull ash, a rice hull ash geopolymer and a preparation method of the rice hull ash geopolymer. The preparation method of the ricehull ash comprises the following steps: soaking rice hulls in an acid solution; taking out the rice husks, washing the rice husks to be neutral, drying the rice husks, and calcining the rice husks incalcining equipment at the temperature of 400-900 DEG C for 0.5-3 hours to obtain the rice husk ash. The invention discloses the preparation method of rice hull ash, K and other impurities hinderingrice hull combustion are removed through soaking treatment in an acid solution, the specific surface area of the rice hull ash is increased, the specific surface area is larger, the surface energy islarger, more active SiO2 is exposed, the volcanic ash activity of the rice hull ash is remarkably improved, and the content of silicon dioxide in the rice hull is remarkably increased and can reach 99.5% or above to the maximum. The rice husks are subjected to high-temperature calcination treatment, so that the content of crystalline silicon dioxide can be obviously reduced, the generation of amorphous silicon dioxide is promoted, the chemical activity is improved, and meanwhile, residual carbon is reduced.
本发明提供了一种稻壳灰及其制备方法、稻壳灰地聚物及其制备方法，稻壳灰的制备方法包括以下步骤：将稻壳置于酸溶液中浸泡；取出稻壳洗涤至中性，干燥后，然后置于煅烧设备中于温度为400～900℃的下煅烧0.5～3h即制备得到稻壳灰。发明的稻壳灰制备方法，酸溶液中浸泡处理去除了K等阻碍稻壳燃烧的杂质，增大了稻壳灰的比表面积，比表面积越大，表面能越大，暴露出更多活性SiO2，显著提高稻壳灰的火山灰活性，显著提升稻壳中二氧化硅的含量，最高可达99.5％以上。通过对稻壳进行高温煅烧处理，可明显降低晶体二氧化硅的含量，促进无定型二氧化硅的生成，提高化学活性，同时降低残余碳。
Rice hull ash and preparation method thereof, rice hull ash geopolymer and preparation method thereof
一种稻壳灰及其制备方法、稻壳灰地聚物及其制备方法
GUO LIANG (Autor:in) / DUAN PING (Autor:in) / LI MAOSEN (Autor:in) / JIANG JINPING (Autor:in) / WANG WENQIANG (Autor:in) / LIU XINHAO (Autor:in) / LIU HAORAN (Autor:in) / LIU JUNHAN (Autor:in) / WU ZHENTAO (Autor:in)
27.11.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Rice hull ash and preparation method and application thereof
| Europäisches Patentamt | 2022
Mortar composition comprising rice hull and preparation method thereof
Europäisches Patentamt | 2016
MORTAR COMPOSITION COMPRISING RICE HULL AND PREPARATION METHOD THEREOF
| Europäisches Patentamt | 2016
Rice hull ash modified rubber concrete and preparation method thereof
| Europäisches Patentamt | 2020
Rice hull light-weight building block and preparation method thereof
| Europäisches Patentamt | 2015