Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Underground filling material and preparation method thereof
The invention provides an underground filling material and a preparation method thereof. The preparation method provided by the invention comprises the following steps: A) performing impurity removal and screening pretreatment on CFB fly ash to obtain pretreated CFB fly ash A; b) mixing and grinding the pretreated CFB fly ash A with a composite exciting agent, a composite water reducing agent and a composite thickening agent to obtain active gelling powder B; c) mixing the coarse gasified slag and the fine gasified slag to obtain a gasified slag mixed slag aggregate C; and D) mixing the active gelling powder B, the gasified slag mixed slag aggregate C and water to obtain the underground filling material. Wherein the particle size of the coarse gasified slag is 0.5-20 mm; the particle size of the gasification slag fine slag is less than or equal to 0.3 mm; wherein the step B) and the step C) are not limited in sequence. According to the prepared underground filling material, a large amount of solid waste can be utilized, waste utilization is achieved, and meanwhile the performance requirement of the underground filling material can be met.
本发明提供了一种井下充填材料及其制备方法。本发明提供的制备方法包括：A)对CFB飞灰进行除杂和筛选预处理，得到预处理CFB飞灰A；B)将所述预处理CFB飞灰A与复合激发剂、复合减水剂、复合增稠剂混合粉磨，得到活性胶凝粉体B；C)将气化渣粗渣和气化渣细渣混合，得到气化渣混合渣骨料C；D)将所述活性胶凝粉体B、气化渣混合渣骨料C和水混合，得到井下充填材料；其中，所述气化渣粗渣的粒度为0.5～20mm；所述气化渣细渣的粒度≤0.3mm；其中，步骤B)和步骤C)没有顺序限制。本发明制备的井下填充材料，能够大量利用固体废弃物，实现废物利用，同时能够满足井下充填材料的性能要求。
Underground filling material and preparation method thereof
The invention provides an underground filling material and a preparation method thereof. The preparation method provided by the invention comprises the following steps: A) performing impurity removal and screening pretreatment on CFB fly ash to obtain pretreated CFB fly ash A; b) mixing and grinding the pretreated CFB fly ash A with a composite exciting agent, a composite water reducing agent and a composite thickening agent to obtain active gelling powder B; c) mixing the coarse gasified slag and the fine gasified slag to obtain a gasified slag mixed slag aggregate C; and D) mixing the active gelling powder B, the gasified slag mixed slag aggregate C and water to obtain the underground filling material. Wherein the particle size of the coarse gasified slag is 0.5-20 mm; the particle size of the gasification slag fine slag is less than or equal to 0.3 mm; wherein the step B) and the step C) are not limited in sequence. According to the prepared underground filling material, a large amount of solid waste can be utilized, waste utilization is achieved, and meanwhile the performance requirement of the underground filling material can be met.
本发明提供了一种井下充填材料及其制备方法。本发明提供的制备方法包括：A)对CFB飞灰进行除杂和筛选预处理，得到预处理CFB飞灰A；B)将所述预处理CFB飞灰A与复合激发剂、复合减水剂、复合增稠剂混合粉磨，得到活性胶凝粉体B；C)将气化渣粗渣和气化渣细渣混合，得到气化渣混合渣骨料C；D)将所述活性胶凝粉体B、气化渣混合渣骨料C和水混合，得到井下充填材料；其中，所述气化渣粗渣的粒度为0.5～20mm；所述气化渣细渣的粒度≤0.3mm；其中，步骤B)和步骤C)没有顺序限制。本发明制备的井下填充材料，能够大量利用固体废弃物，实现废物利用，同时能够满足井下充填材料的性能要求。
Underground filling material and preparation method thereof
一种井下充填材料及其制备方法
WANG CHAO (Autor:in) / YU WENCHAO (Autor:in) / SONG RUILING (Autor:in) / ZHANG HENG (Autor:in)
08.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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