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High-silicon iron tailing cementing material and preparation method thereof
The invention belongs to the technical field of building materials, and particularly relates to a high-silicon iron tailing cementing material and a preparation method thereof. The high-silicon iron tailing cementing material comprises the following raw materials: composite powder, an alkali activator and water; the composite powder comprises the following components in percentage by weight: 60-75% of siliceous iron tailing powder, 1-8% of steel slag powder, 5-15% of coal gangue, 0-25% of fly ash, 5-15% of slag powder and 0-2% of diatomite, wherein the water accounts for 30-40% of the composite powder. The alkali activator comprises methyl sodium silicate and sodium silicate; the purity of the methyl sodium silicate is not less than 98%, and the modulus Si02/Na20 of the sodium silicate is 1.5-3.5. The invention has the advantages of low production cost, high stability, low porosity, high volume density and ideal impermeability, can effectively excite the activity of the high-silicon fine iron tailing sand, can inhibit the expansion of steel slag, and can adjust the setting time.
本发明属建筑材料技术领域，尤其涉及一种高硅铁尾矿胶凝材料及其制备方法，包括如下原料：复合粉体、碱激发剂及水；以重量百分含量计，所述复合粉体包括：硅质铁尾矿粉60～75%、钢渣粉1～8%、煤矸石5～15%、粉煤灰0～25%、矿渣粉5%～15%及硅藻土0～2%；所述水占复合粉体30～40%。所述碱激发剂包括甲基硅酸钠与硅酸钠；甲基硅酸钠的纯度不小于98%，硅酸钠的模数Si02/Na20为1.5～3.5。本发明生产成本低，稳定性高，孔隙率低，体积密度大，抗渗性能理想，能有效激发高硅型细铁尾矿砂的活性，可抑制钢渣膨胀，对凝结时间进行调整。
High-silicon iron tailing cementing material and preparation method thereof
The invention belongs to the technical field of building materials, and particularly relates to a high-silicon iron tailing cementing material and a preparation method thereof. The high-silicon iron tailing cementing material comprises the following raw materials: composite powder, an alkali activator and water; the composite powder comprises the following components in percentage by weight: 60-75% of siliceous iron tailing powder, 1-8% of steel slag powder, 5-15% of coal gangue, 0-25% of fly ash, 5-15% of slag powder and 0-2% of diatomite, wherein the water accounts for 30-40% of the composite powder. The alkali activator comprises methyl sodium silicate and sodium silicate; the purity of the methyl sodium silicate is not less than 98%, and the modulus Si02/Na20 of the sodium silicate is 1.5-3.5. The invention has the advantages of low production cost, high stability, low porosity, high volume density and ideal impermeability, can effectively excite the activity of the high-silicon fine iron tailing sand, can inhibit the expansion of steel slag, and can adjust the setting time.
本发明属建筑材料技术领域，尤其涉及一种高硅铁尾矿胶凝材料及其制备方法，包括如下原料：复合粉体、碱激发剂及水；以重量百分含量计，所述复合粉体包括：硅质铁尾矿粉60～75%、钢渣粉1～8%、煤矸石5～15%、粉煤灰0～25%、矿渣粉5%～15%及硅藻土0～2%；所述水占复合粉体30～40%。所述碱激发剂包括甲基硅酸钠与硅酸钠；甲基硅酸钠的纯度不小于98%，硅酸钠的模数Si02/Na20为1.5～3.5。本发明生产成本低，稳定性高，孔隙率低，体积密度大，抗渗性能理想，能有效激发高硅型细铁尾矿砂的活性，可抑制钢渣膨胀，对凝结时间进行调整。
High-silicon iron tailing cementing material and preparation method thereof
高硅铁尾矿胶凝材料及其制备方法
GU XIAOWEI (author) / WANG YUSHENG (author) / LIU JIANPING (author) / LIU DONG (author) / CHU ZHAOQIANG (author)
2021-04-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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