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Preparation method of nanocellulose reinforced filling slurry
The invention provides a preparation method of nanocellulose reinforced filling slurry, and belongs to the technical field of mining filling. The method comprises the following steps: mechanically stirring and uniformly mixing dry nanocellulose powder and sodium carboxymethyl cellulose (CMC) powder, performing ultraviolet irradiation treatment at the same time, and adding the mixture into a filling bin through a feeder for mixing and stirring; and after uniform stirring, the filling slurry is pumped and conveyed to an underground goaf through a pipeline for filling construction. According to the invention, the filling slurry is reinforced by compounding the nano-cellulose and the sodium carboxymethyl cellulose, the nano-cellulose can effectively improve the hydration degree of the slurry, improve the water-retaining property and workability of the slurry and greatly increase the compactness and strength of a filling body, and the sodium carboxymethyl cellulose is beneficial to dispersion of the nano-cellulose and acceleration of flocculating settling of tailings, so that the filling effect is improved. The concentration of the filling slurry is improved, and the compactness of a filling body is improved, so that the mechanical property of the filling slurry is improved, and the filling cost is reduced.
本发明提供一种纳米纤维素增强充填料浆的制备方法，属于采矿充填技术领域。该方法将纳米纤维素干粉与羧甲基纤维素钠(CMC)粉体机械搅拌混合均匀，同时进行过紫外光照射处理，通过给料器加入充填料仓中混合搅拌；搅拌均匀后，将充填料浆通过管道泵送输送至井下采空区充填施工。本发明通过纳米纤维素与羧甲基纤维素钠的复配增强充填料浆，纳米纤维素可有效提高料浆的水化程度，改善料浆保水性及和易性，大大增加充填体致密性及强度，羧甲基纤维素钠有助于纳米纤维素的分散，加快尾砂絮凝沉降，提高充填料浆浓度，增加充填体的致密性，从而提高了充填料浆的力学性能，降低充填成本。
Preparation method of nanocellulose reinforced filling slurry
The invention provides a preparation method of nanocellulose reinforced filling slurry, and belongs to the technical field of mining filling. The method comprises the following steps: mechanically stirring and uniformly mixing dry nanocellulose powder and sodium carboxymethyl cellulose (CMC) powder, performing ultraviolet irradiation treatment at the same time, and adding the mixture into a filling bin through a feeder for mixing and stirring; and after uniform stirring, the filling slurry is pumped and conveyed to an underground goaf through a pipeline for filling construction. According to the invention, the filling slurry is reinforced by compounding the nano-cellulose and the sodium carboxymethyl cellulose, the nano-cellulose can effectively improve the hydration degree of the slurry, improve the water-retaining property and workability of the slurry and greatly increase the compactness and strength of a filling body, and the sodium carboxymethyl cellulose is beneficial to dispersion of the nano-cellulose and acceleration of flocculating settling of tailings, so that the filling effect is improved. The concentration of the filling slurry is improved, and the compactness of a filling body is improved, so that the mechanical property of the filling slurry is improved, and the filling cost is reduced.
本发明提供一种纳米纤维素增强充填料浆的制备方法，属于采矿充填技术领域。该方法将纳米纤维素干粉与羧甲基纤维素钠(CMC)粉体机械搅拌混合均匀，同时进行过紫外光照射处理，通过给料器加入充填料仓中混合搅拌；搅拌均匀后，将充填料浆通过管道泵送输送至井下采空区充填施工。本发明通过纳米纤维素与羧甲基纤维素钠的复配增强充填料浆，纳米纤维素可有效提高料浆的水化程度，改善料浆保水性及和易性，大大增加充填体致密性及强度，羧甲基纤维素钠有助于纳米纤维素的分散，加快尾砂絮凝沉降，提高充填料浆浓度，增加充填体的致密性，从而提高了充填料浆的力学性能，降低充填成本。
Preparation method of nanocellulose reinforced filling slurry
一种纳米纤维素增强充填料浆的制备方法
FU JIANXIN (author) / SONG WEIDONG (author) / WANG JIE (author)
2022-03-18
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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