Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Coal cinder mild activation method and binding material containing coal cinder
The invention provides a coal cinder mild activation method and a binding material containing coal cinder, and belongs to the cross technical field of solid waste recycling and mine filling materials. The coal cinder mild activation method comprises the following steps: S1, drying coal cinder, measuring the water content of the coal cinder, and ensuring that the water content of the coal cinder is less than or equal to 1%; s2, coal cinder and calcium oxide are mixed and then ground, water is added into the obtained mixed powder, continuous stirring is conducted, meanwhile, heating is conducted to 80-90 DEG C, heat preservation is conducted for 50-90 min, and a solid-liquid mixture is obtained; and S3, naturally cooling the solid-liquid mixture, filtering, and drying the precipitate to obtain the activated coal cinder. The invention also provides a binding material containing the coal cinder. The binding material comprises the following components in percentage by mass: 60-70% of coal cinder, 0-10% of fly ash, 0-20% of slag, 8-20% of calcium oxide, 5-20% of cement clinker, 2% of calcium chloride and 0.2% of HPMC. According to the invention, three industrial solid wastes of coal cinder, slag and fly ash are synergistically utilized, and the prepared coal cinder-based cementing material can replace high-cost cement in mine filling materials.
本发明提供了一种煤渣温和活化方法及含有所述煤渣的胶凝材料，属于固体废弃物资源化和矿山充填材料的交叉技术领域。所述煤渣温和活化方法包括如下步骤：S1、将煤渣烘干后测其含水率，保证其含水率≤1%；S2、将煤渣和氧化钙混合后研磨，向得到的混合粉末中加水并持续搅拌，同时加热至80‑90℃并保温50‑90min，得到固液混合物；S3、将所述固液混合物自然降温，过滤后将沉淀物烘干，得到活化煤渣。本发明还提供了含有所述煤渣的胶凝材料，其各组分及所占质量百分比为：煤渣60%‑70%、粉煤灰0‑10%、矿渣0‑20%、氧化钙8‑20%、水泥熟料5‑20%、氯化钙2%和HPMC 0.2%。本发明协同利用了煤渣、矿渣、粉煤灰三种工业固体废弃物，制备的煤渣基胶凝材料可替代矿山充填材料中的高成本水泥。
Coal cinder mild activation method and binding material containing coal cinder
The invention provides a coal cinder mild activation method and a binding material containing coal cinder, and belongs to the cross technical field of solid waste recycling and mine filling materials. The coal cinder mild activation method comprises the following steps: S1, drying coal cinder, measuring the water content of the coal cinder, and ensuring that the water content of the coal cinder is less than or equal to 1%; s2, coal cinder and calcium oxide are mixed and then ground, water is added into the obtained mixed powder, continuous stirring is conducted, meanwhile, heating is conducted to 80-90 DEG C, heat preservation is conducted for 50-90 min, and a solid-liquid mixture is obtained; and S3, naturally cooling the solid-liquid mixture, filtering, and drying the precipitate to obtain the activated coal cinder. The invention also provides a binding material containing the coal cinder. The binding material comprises the following components in percentage by mass: 60-70% of coal cinder, 0-10% of fly ash, 0-20% of slag, 8-20% of calcium oxide, 5-20% of cement clinker, 2% of calcium chloride and 0.2% of HPMC. According to the invention, three industrial solid wastes of coal cinder, slag and fly ash are synergistically utilized, and the prepared coal cinder-based cementing material can replace high-cost cement in mine filling materials.
本发明提供了一种煤渣温和活化方法及含有所述煤渣的胶凝材料，属于固体废弃物资源化和矿山充填材料的交叉技术领域。所述煤渣温和活化方法包括如下步骤：S1、将煤渣烘干后测其含水率，保证其含水率≤1%；S2、将煤渣和氧化钙混合后研磨，向得到的混合粉末中加水并持续搅拌，同时加热至80‑90℃并保温50‑90min，得到固液混合物；S3、将所述固液混合物自然降温，过滤后将沉淀物烘干，得到活化煤渣。本发明还提供了含有所述煤渣的胶凝材料，其各组分及所占质量百分比为：煤渣60%‑70%、粉煤灰0‑10%、矿渣0‑20%、氧化钙8‑20%、水泥熟料5‑20%、氯化钙2%和HPMC 0.2%。本发明协同利用了煤渣、矿渣、粉煤灰三种工业固体废弃物，制备的煤渣基胶凝材料可替代矿山充填材料中的高成本水泥。
Coal cinder mild activation method and binding material containing coal cinder
一种煤渣温和活化方法及含有所述煤渣的胶凝材料
JIN AIBING (Autor:in) / LI HAI (Autor:in) / AO RONGXING (Autor:in) / ZHAO YIQING (Autor:in) / CHEN SHUAIJUN (Autor:in) / JUNG YOU-MI (Autor:in) / WANG ZHONGSHU (Autor:in)
13.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Engineering Index Backfile | 1924
Proportioning cement based composites with burnt coal cinder
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