Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-calcium fly ash alkali-activated cement and preparation method thereof
The invention discloses high-calcium fly ash alkali-activated cement and a preparation method thereof, and relates to the technical field of building materials. The method comprises the following steps: beating and crushing the leather-making sludge by using a spade, and placing the crushed leather-making sludge in a sunny and ventilated outdoor environment for airing to form dried sludge, wherein the dried sludge is prepared from the leather-making sludge and 3-12% of sodium hydroxide or 3-12% of sodium silicate solid powder in percentage by weight; the tannery sludge is modified and optimized from physical and chemical levels in a mode of combining mechanical stirring and alkali-adding activator (sodium hydroxide or sodium silicate solid powder), the alkali-adding mode is divided into dry alkali-adding and wet alkali-adding, the mix proportion is designed according to the mass ratio of Na2O in the alkali activator to the sludge, and the alkali-adding activator is added to the sludge. The method has the advantages that harmless and optimal modification of the tannery sludge is guaranteed to a great extent, environmental pollution caused by pungent smell and toxic gas generated in the calcining process is avoided compared with a traditional calcining method for treating the sludge, and the sludge treatment cost is reduced.
本发明公开了一种高钙粉煤灰碱激发水泥及其制备方法，涉及建筑材料技术领域；而本发明包括制革污泥、按百分比计为3~12%的氢氧化钠或3~12%的水玻璃固体粉末，其中，采用铁锹将制革污泥拍碎，并置于有阳光且通风的室外进行晾晒，形成干化污泥；通过机械搅拌加碱激发剂（氢氧化钠或水玻璃固体粉末）两者结合的形式，从物理和化学的层面对制革污泥进行了改性优化，并将加碱方式分为干法加碱和湿法加碱，按照碱激发剂中Na2O占污泥的质量比来设计配合比，极大程度地确保了制革污泥的无害化和最优化改性，相较于传统的煅烧的方法处理污泥，避免煅烧过程中产生的刺激性气味和有毒气体造成环境污染，且降低了处理污泥的成本。
High-calcium fly ash alkali-activated cement and preparation method thereof
The invention discloses high-calcium fly ash alkali-activated cement and a preparation method thereof, and relates to the technical field of building materials. The method comprises the following steps: beating and crushing the leather-making sludge by using a spade, and placing the crushed leather-making sludge in a sunny and ventilated outdoor environment for airing to form dried sludge, wherein the dried sludge is prepared from the leather-making sludge and 3-12% of sodium hydroxide or 3-12% of sodium silicate solid powder in percentage by weight; the tannery sludge is modified and optimized from physical and chemical levels in a mode of combining mechanical stirring and alkali-adding activator (sodium hydroxide or sodium silicate solid powder), the alkali-adding mode is divided into dry alkali-adding and wet alkali-adding, the mix proportion is designed according to the mass ratio of Na2O in the alkali activator to the sludge, and the alkali-adding activator is added to the sludge. The method has the advantages that harmless and optimal modification of the tannery sludge is guaranteed to a great extent, environmental pollution caused by pungent smell and toxic gas generated in the calcining process is avoided compared with a traditional calcining method for treating the sludge, and the sludge treatment cost is reduced.
本发明公开了一种高钙粉煤灰碱激发水泥及其制备方法，涉及建筑材料技术领域；而本发明包括制革污泥、按百分比计为3~12%的氢氧化钠或3~12%的水玻璃固体粉末，其中，采用铁锹将制革污泥拍碎，并置于有阳光且通风的室外进行晾晒，形成干化污泥；通过机械搅拌加碱激发剂（氢氧化钠或水玻璃固体粉末）两者结合的形式，从物理和化学的层面对制革污泥进行了改性优化，并将加碱方式分为干法加碱和湿法加碱，按照碱激发剂中Na2O占污泥的质量比来设计配合比，极大程度地确保了制革污泥的无害化和最优化改性，相较于传统的煅烧的方法处理污泥，避免煅烧过程中产生的刺激性气味和有毒气体造成环境污染，且降低了处理污泥的成本。
High-calcium fly ash alkali-activated cement and preparation method thereof
一种高钙粉煤灰碱激发水泥及其制备方法
CHEN SHOUKAI (Autor:in) / WANG LUNYAN (Autor:in) / GUO LEI (Autor:in) / LI XIN (Autor:in) / RAN YUNLONG (Autor:in) / GUO LIXIA (Autor:in) / LU PENG (Autor:in) / LEE BYUNG RIM (Autor:in) / TANG SHANSHAN (Autor:in)
29.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2023
Alkali-activated titanium slag extraction cement and preparation method thereof
| Europäisches Patentamt | 2022
Cement-based composite alkali-activated cementing material and preparation method thereof
| Europäisches Patentamt | 2021
Retarded alkali-activated titanium slag extraction cement and preparation method thereof
| Europäisches Patentamt | 2022