Gel material for filling worked out section by vanadium-titanium-containing slags
A technology of cementitious materials and vanadium-titanium slag, which is applied in the field of cementitious materials, can solve the problems of restricting the application and development of cemented filling technology and the high cost of filling materials, and achieve prevention and environmental protection, resource utilization, and low disposal cost effect
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Embodiment 1
[0043] The chemical composition of the cementitious material is calculated by mass percentage: 8% cement clinker, 15% desulfurized gypsum, and 77% vanadium-titanium slag. The particle size distribution of desulfurized gypsum is d 10 = 13.5 μm, d 50 = 38.3 μm, d 90 = 72.7 μm, d av =42.2μm, specific surface area 2436.0cm 2 / cm 3 , SO in desulfurized gypsum 3 The mass percentage is 38%. The particle size distribution of vanadium-titanium slag is d 10 = 4.5 μm, d 50 = 10.7 μm, d 90 = 43.8 μm, d av = 18.2 μm, alkaline slag with an alkalinity coefficient of 1.1, a quality coefficient of 1.6, and an activity coefficient of 0.5.
[0044] The composition of the full tailings filling material includes: 73% - 75% SiO2 in terms of mass percentage 2 , 5%-6%CaO, 6%-7%Fe 2 o 3 , 5%—6%Al 2 o 3 , 3%-4%MgO, less than 3% loss on ignition; the density of the full tailings filling is 2.52g / cm 3 , the particle size is less than 0.9mm, the content of fine tailings with a particle siz...
Embodiment 2
[0047] The chemical composition of the cementitious material is calculated by mass percentage: 4% cement clinker, 4% quicklime, 14% desulfurized gypsum, 76% vanadium-titanium slag, and 2% Glauber's salt. The mass percentage of CaO in quicklime is 78%, and the particle size distribution of quicklime is d 10 =5.06μm, d 50 = 13.68 μm, d 90 = 42.21 μm, d av =24.55μm, specific surface area 5720cm 2 / cm 3 . The particle size distribution of desulfurized gypsum is d 10 = 14.5 μm, d 50 = 39.3 μm, d 90 = 75.8 μm, d av =43.5μm, specific surface area 2396.7cm 2 / cm 3 , SO in desulfurized gypsum 3 The mass percentage is 39%. The particle size distribution of vanadium-titanium slag is d 10 = 4.5 μm, d 50 = 10.7 μm, d 90 = 43.8 μm, d av =18.2μm, the alkalinity coefficient is 1.06, the quality coefficient is 1.8, and the activity coefficient is 0.5.
[0048] The composition of the full tailings filling material includes: 73% - 75% SiO2 in terms of mass percentage 2 , 5%-6%C...
Embodiment 3
[0051] The chemical composition of the cementitious material is calculated by mass percentage: 5% cement clinker, 6% quicklime, 14% desulfurized gypsum, 75% vanadium-titanium slag. The mass percentage of CaO in quicklime is 82%, and the particle size distribution of quicklime is d 10 = 4.91 μm, d 50 = 12.73 μm, d 90 = 39.85 μm, d av =22.23μm, specific surface area 6013cm 2 / cm 3 . The particle size distribution of desulfurized gypsum is d 10 = 15.2 μm, d 50 = 39.6 μm, d 90 = 70.1 μm, d av =41.9μm, specific surface area 2450.5 cm 2 / cm 3 , SO in the desulfurized gypsum 3 The mass percentage is 38%.
[0052] 6. cementitious material according to claim 1, is characterized in that, the particle size distribution of vanadium-titanium slag is d 10 = 4.5 μm, d 50 = 10.7 μm, d 90 = 43.8 μm, d av =18.2μm, the alkalinity coefficient is 1.04, the quality coefficient is 1.6, and the activity coefficient is 0.5.
[0053] The composition of the full tailings filling materia...
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