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Mine filling cementing material and preparation method thereof
The invention discloses a mine filling cementing material and a preparation method thereof, and belongs to the technical field of mine filling, the mine filling cementing material comprises the following raw materials by weight: 260-300 parts of ultrafine tailings, 90-300 parts of river sand, 8-20 parts of quicklime, 50-100 parts of desulfurized gypsum, 20-60 parts of cement, 100-200 parts of water, and 25-50 parts of a dispersant; the preparation method of the dispersant comprises the following steps: under the protection of nitrogen, adding acrylamide, benzyl ethyl trimethyl ammonium chloride, dimethyl diallyl ammonium chloride, urea, disodium ethylene diamine tetraacetate and deionized water into a reaction container, stirring, dropwise adding ammonium persulfate, dropwise adding sodium hydrogen sulfite, carrying out a heat preservation reaction, drying, and crushing to obtain the dispersant. The superfine tailings are adopted as the main raw material, so that the fluidity of the superfine tailings is improved, and the uniformity of the strength of a filling body formed by the mine filling cementing material is improved.
本发明公开了一种矿山填充胶凝材料及其制备方法，属于矿山充填技术领域，包括如下重量份原料：超细尾砂260‑300份、河沙90‑300份、生石灰8‑20份、脱硫石膏50‑100份、水泥20‑60份、水100‑200份、分散剂25‑50份；所述分散剂包括如下步骤制备：氮气保护下，向反应容器中加入丙烯酰胺、苄乙基三甲基氯化铵、二甲基二烯丙基氯化铵中加入尿素、乙二胺四乙酸二钠、去离子水，搅拌，滴加过硫酸铵，滴加亚硫酸氢钠，保温反应，干燥、粉碎，得分散剂。本发明采用超细尾砂为主要原料，提高了超细尾砂的流动性，提高了矿山填充胶凝材料形成的充填体的强度的均匀性。
Mine filling cementing material and preparation method thereof
The invention discloses a mine filling cementing material and a preparation method thereof, and belongs to the technical field of mine filling, the mine filling cementing material comprises the following raw materials by weight: 260-300 parts of ultrafine tailings, 90-300 parts of river sand, 8-20 parts of quicklime, 50-100 parts of desulfurized gypsum, 20-60 parts of cement, 100-200 parts of water, and 25-50 parts of a dispersant; the preparation method of the dispersant comprises the following steps: under the protection of nitrogen, adding acrylamide, benzyl ethyl trimethyl ammonium chloride, dimethyl diallyl ammonium chloride, urea, disodium ethylene diamine tetraacetate and deionized water into a reaction container, stirring, dropwise adding ammonium persulfate, dropwise adding sodium hydrogen sulfite, carrying out a heat preservation reaction, drying, and crushing to obtain the dispersant. The superfine tailings are adopted as the main raw material, so that the fluidity of the superfine tailings is improved, and the uniformity of the strength of a filling body formed by the mine filling cementing material is improved.
本发明公开了一种矿山填充胶凝材料及其制备方法，属于矿山充填技术领域，包括如下重量份原料：超细尾砂260‑300份、河沙90‑300份、生石灰8‑20份、脱硫石膏50‑100份、水泥20‑60份、水100‑200份、分散剂25‑50份；所述分散剂包括如下步骤制备：氮气保护下，向反应容器中加入丙烯酰胺、苄乙基三甲基氯化铵、二甲基二烯丙基氯化铵中加入尿素、乙二胺四乙酸二钠、去离子水，搅拌，滴加过硫酸铵，滴加亚硫酸氢钠，保温反应，干燥、粉碎，得分散剂。本发明采用超细尾砂为主要原料，提高了超细尾砂的流动性，提高了矿山填充胶凝材料形成的充填体的强度的均匀性。
Mine filling cementing material and preparation method thereof
一种矿山填充胶凝材料及其制备方法
ZHENG YUHANG (author) / WANG SU'AN (author) / CHEN DONG (author)
2023-12-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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