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A platform for research: civil engineering, architecture and urbanism
Early strength agent for mine filling material and preparation method of early strength agent
The invention relates to the technical field of early strength agents, and discloses an early strength agent for a mine filling material and a preparation method of the early strength agent. The early strength agent comprises the following components: 10-20 wt% of sodium aluminate, 12.4-57 wt% of aluminum salt, 0-5 wt% of an alkalinity regulator, 0.1-0.5 wt% of a stabilizer and the balance of water. The preparation method comprises the following steps: S1, adding water into a reaction kettle, heating to 30-35 DEG C, adding half of the weight of aluminum salt, and stirring for dissolving; adding 1/3 of sodium aluminate, stirring until the aluminum salt is dissolved, adding the residual aluminum salt and the residual sodium aluminate, and reacting at 60-80 DEG C for 2-3 hours to obtain a first solution; s2, slowly adding an alkalinity regulator into the first solution, and regulating the alkalinity degree to 16.4-30% to obtain a second solution; and S3, adding the stabilizer into the second solution, and uniformly stirring to obtain the product. The early strength agent provided by the invention can improve the early strength of the mine filling material, so that the mine filling material is finally set within 24 hours without influencing construction, the strength reaches 6 MPa within 28 days, the requirements of mine filling are met, and the cost of the filling material is greatly reduced.
本发明涉及早强剂技术领域，公开了一种用于矿山充填材料的早强剂及其制备方法。早强剂包括以下组分：铝酸钠10‑20wt％、铝盐12.4‑57wt％、碱度调节剂0‑5wt％、稳定剂0.1‑0.5wt％，余量为水；制备方法包括：S1，在反应釜中加水并加热至30‑35℃，加入一半重量的铝盐搅拌溶解；先加入三分之一的铝酸钠，搅拌至铝盐溶解后再加入剩余的铝盐和剩余的铝酸钠，在60‑80℃下反应2‑3h，得到第一溶液；S2，将碱度调节剂缓慢加入第一溶液，调节碱化度至16.4‑30％，得到第二溶液；S3，将稳定剂加入第二溶液中，搅拌均匀，即得。本发明的早强剂能提高矿山充填材料的早期强度，使矿山充填材料在24h内终凝而不影响施工，在28d强度达到6MPa，满足矿井充填的要求，大幅降低了充填材料的成本。
Early strength agent for mine filling material and preparation method of early strength agent
The invention relates to the technical field of early strength agents, and discloses an early strength agent for a mine filling material and a preparation method of the early strength agent. The early strength agent comprises the following components: 10-20 wt% of sodium aluminate, 12.4-57 wt% of aluminum salt, 0-5 wt% of an alkalinity regulator, 0.1-0.5 wt% of a stabilizer and the balance of water. The preparation method comprises the following steps: S1, adding water into a reaction kettle, heating to 30-35 DEG C, adding half of the weight of aluminum salt, and stirring for dissolving; adding 1/3 of sodium aluminate, stirring until the aluminum salt is dissolved, adding the residual aluminum salt and the residual sodium aluminate, and reacting at 60-80 DEG C for 2-3 hours to obtain a first solution; s2, slowly adding an alkalinity regulator into the first solution, and regulating the alkalinity degree to 16.4-30% to obtain a second solution; and S3, adding the stabilizer into the second solution, and uniformly stirring to obtain the product. The early strength agent provided by the invention can improve the early strength of the mine filling material, so that the mine filling material is finally set within 24 hours without influencing construction, the strength reaches 6 MPa within 28 days, the requirements of mine filling are met, and the cost of the filling material is greatly reduced.
本发明涉及早强剂技术领域，公开了一种用于矿山充填材料的早强剂及其制备方法。早强剂包括以下组分：铝酸钠10‑20wt％、铝盐12.4‑57wt％、碱度调节剂0‑5wt％、稳定剂0.1‑0.5wt％，余量为水；制备方法包括：S1，在反应釜中加水并加热至30‑35℃，加入一半重量的铝盐搅拌溶解；先加入三分之一的铝酸钠，搅拌至铝盐溶解后再加入剩余的铝盐和剩余的铝酸钠，在60‑80℃下反应2‑3h，得到第一溶液；S2，将碱度调节剂缓慢加入第一溶液，调节碱化度至16.4‑30％，得到第二溶液；S3，将稳定剂加入第二溶液中，搅拌均匀，即得。本发明的早强剂能提高矿山充填材料的早期强度，使矿山充填材料在24h内终凝而不影响施工，在28d强度达到6MPa，满足矿井充填的要求，大幅降低了充填材料的成本。
Early strength agent for mine filling material and preparation method of early strength agent
一种用于矿山充填材料的早强剂及其制备方法
LIU LANG (author) / ZHU MENGBO (author) / WANG HONGJUN (author) / WANG DEXIANG (author) / SUN WEIJI (author) / WANG RUOFAN (author) / FANG ZHIYU (author) / HOU DONGZHUANG (author) / RUAN SHISHAN (author) / ZHOU JING (author)
2023-09-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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