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Coal gangue-based mine filling material and preparation method thereof
The invention discloses a filling body doped with coal gangue and slag. The filling body is prepared from 70%-100% of coal gangue powder and 0-30% of slag, the mass ratio of fine-particle-size gangue to coarse-particle-size gangue is (1-2.3): 1, the bone-glue ratio is 3-5, the mass concentration is 81%-83%, and the mass ratio of an alkali activator NaOH to a cementing material is (2-6): 100. And pouring the excitation solution into the material to obtain the filling slurry. The coal gangue powder and the slag are used for preparing the cementing material, the coal gangue is added for preparing the filling body, the strength and fluidity requirements of the filling body are met, the production cost is reduced, and the environmental problem caused by mining is solved. The slurry is applied to mine filling and has certain practical significance.
本发明公开了一种掺有煤矸石与矿渣的充填体。该充填体的材料为煤矸石粉70％‑100％，矿渣0‑30％，细粒径矸石与粗粒径矸石的质量配比为：1‑2.3:1，骨胶比为3‑5，质量浓度为81％‑83％，碱激发剂NaOH与胶凝材料质量配比为：2‑6：100。将激发溶液倒入材料中可得到充填料浆。本发明利用煤矸石粉、矿渣制备胶凝材料并加入煤矸石制备充填体，满足充填体的强度和流动性要求，降低了生产成本，解决了矿山开采引起的环境问题。该料浆应用到矿山充填中，具有一定的实用意义。
Coal gangue-based mine filling material and preparation method thereof
The invention discloses a filling body doped with coal gangue and slag. The filling body is prepared from 70%-100% of coal gangue powder and 0-30% of slag, the mass ratio of fine-particle-size gangue to coarse-particle-size gangue is (1-2.3): 1, the bone-glue ratio is 3-5, the mass concentration is 81%-83%, and the mass ratio of an alkali activator NaOH to a cementing material is (2-6): 100. And pouring the excitation solution into the material to obtain the filling slurry. The coal gangue powder and the slag are used for preparing the cementing material, the coal gangue is added for preparing the filling body, the strength and fluidity requirements of the filling body are met, the production cost is reduced, and the environmental problem caused by mining is solved. The slurry is applied to mine filling and has certain practical significance.
本发明公开了一种掺有煤矸石与矿渣的充填体。该充填体的材料为煤矸石粉70％‑100％，矿渣0‑30％，细粒径矸石与粗粒径矸石的质量配比为：1‑2.3:1，骨胶比为3‑5，质量浓度为81％‑83％，碱激发剂NaOH与胶凝材料质量配比为：2‑6：100。将激发溶液倒入材料中可得到充填料浆。本发明利用煤矸石粉、矿渣制备胶凝材料并加入煤矸石制备充填体，满足充填体的强度和流动性要求，降低了生产成本，解决了矿山开采引起的环境问题。该料浆应用到矿山充填中，具有一定的实用意义。
Coal gangue-based mine filling material and preparation method thereof
一种煤矸石基矿山充填材料及其制备方法
SUN QI (author) / MA RUIFENG (author)
2022-05-31
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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