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A platform for research: civil engineering, architecture and urbanism
Iron tailing-based geopolymer taking quicklime as additive and preparation method of iron tailing-based geopolymer
The invention discloses an iron tailing-based geopolymer taking quicklime as an additive and a preparation method of the iron tailing-based geopolymer, and belongs to the technical field of building materials. The preparation method comprises the following steps: sequentially adding a sodium silicate solution, distilled water, a sodium silicate solid and a sodium hydroxide solid into a beaker, stirring until the mixture is clear, cooling to obtain a usable alkaline activator A, and grinding iron tailings, metakaolin and quick lime in a ball mill until the median particle size reaches 4-6 microns; pouring an alkaline activator A, slowly and uniformly stirring in a cement paste stirrer to obtain geopolymer slurry B, injecting the slurry into a mold, vibrating, sealing the mold, demolding after the slurry is condensed, putting into a sealing bag, and curing in water at 20 +/-2 DEG C until the age. According to the preparation method, OH <-> and Ca < 2 + > can be dissolved out after the quicklime added in the preparation process meets water, the consumption of NaOH can be reduced, the cost is saved, meanwhile, heat released by the reaction can pre-activate the raw materials, and the reaction can be more sufficient in cooperation with grinding mechanical activation.
本发明公开了一种以生石灰为添加剂的铁尾矿基地质聚合物及其制备方法，属于建筑材料技术领域。本发明通过将硅酸钠溶液、蒸馏水、硅酸钠固体、氢氧化钠固体依次加入烧杯，搅拌至清澈，冷却后得到可使用的碱性激发剂A，将铁尾矿、偏高岭土、生石灰在球磨机中研磨至中值粒径达到4‑6um；倒入碱性激发剂A后于水泥净浆搅拌机缓慢搅拌均匀，得到地质聚合物浆体B，将浆体注入模具中振捣后封模，待其凝结后脱模，放入密封袋，在20±2度的水中养护至龄期。本发明制备过程中加入的生石灰遇水后可溶出OH‑与Ca2+，可减少NaOH的用量，节约了成本，同时，其反应放出的热量可对原材料进行预活化，配合研磨机械活化，可以使反应发生的更加充分。
Iron tailing-based geopolymer taking quicklime as additive and preparation method of iron tailing-based geopolymer
The invention discloses an iron tailing-based geopolymer taking quicklime as an additive and a preparation method of the iron tailing-based geopolymer, and belongs to the technical field of building materials. The preparation method comprises the following steps: sequentially adding a sodium silicate solution, distilled water, a sodium silicate solid and a sodium hydroxide solid into a beaker, stirring until the mixture is clear, cooling to obtain a usable alkaline activator A, and grinding iron tailings, metakaolin and quick lime in a ball mill until the median particle size reaches 4-6 microns; pouring an alkaline activator A, slowly and uniformly stirring in a cement paste stirrer to obtain geopolymer slurry B, injecting the slurry into a mold, vibrating, sealing the mold, demolding after the slurry is condensed, putting into a sealing bag, and curing in water at 20 +/-2 DEG C until the age. According to the preparation method, OH <-> and Ca < 2 + > can be dissolved out after the quicklime added in the preparation process meets water, the consumption of NaOH can be reduced, the cost is saved, meanwhile, heat released by the reaction can pre-activate the raw materials, and the reaction can be more sufficient in cooperation with grinding mechanical activation.
本发明公开了一种以生石灰为添加剂的铁尾矿基地质聚合物及其制备方法，属于建筑材料技术领域。本发明通过将硅酸钠溶液、蒸馏水、硅酸钠固体、氢氧化钠固体依次加入烧杯，搅拌至清澈，冷却后得到可使用的碱性激发剂A，将铁尾矿、偏高岭土、生石灰在球磨机中研磨至中值粒径达到4‑6um；倒入碱性激发剂A后于水泥净浆搅拌机缓慢搅拌均匀，得到地质聚合物浆体B，将浆体注入模具中振捣后封模，待其凝结后脱模，放入密封袋，在20±2度的水中养护至龄期。本发明制备过程中加入的生石灰遇水后可溶出OH‑与Ca2+，可减少NaOH的用量，节约了成本，同时，其反应放出的热量可对原材料进行预活化，配合研磨机械活化，可以使反应发生的更加充分。
Iron tailing-based geopolymer taking quicklime as additive and preparation method of iron tailing-based geopolymer
一种以生石灰为添加剂的铁尾矿基地质聚合物及其制备方法
WANG HAITAO (author) / WANG MENG (author) / ZHOU YING (author) / SHEN XIANGJUN (author) / WANG NAN (author) / JIA JINQING (author) / TU BINGXIONG (author) / WANG BAOYUAN (author) / WU FENG (author) / REN KUN (author)
2022-11-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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