A kind of phosphogypsum light board prepared by using barium slag and its preparation method
A technology of phosphogypsum and dihydrate phosphogypsum, which is applied in the field of building materials, can solve the problems of occupying large land resources, there is no large-scale use of phosphogypsum waste, and harmful ion soil environmental pollution, etc., to achieve adjustable bulk density and optimization Microstructure of hardened body, effect of improving overall performance
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Embodiment 1
[0027] Provide a kind of phosphogypsum lightweight board prepared by barium slag, its component and weight content include:
[0028] 10 parts of barium slag, 4 parts of dihydrate phosphogypsum, 64 parts of phosphorus high-strength gypsum, phosphorus building gypsum (CaSO 4 0.5H 2 (mass fraction greater than 85%) 16 parts, metakaolin 5 parts, carbide slag 1 part, light aggregate 1.2 parts, retarder 0.1 part, water reducing agent 0.2 part, water retaining agent 0.1 part.
[0029] The preparation method steps are as follows:
[0030] 1) Preparation of modified barium slag slurry: mix barium slag and phosphogypsum dihydrate with water at a solid-to-liquid ratio of 1:3, and stir at 45°C for 1.5 hours to obtain modified barium slag slurry;
[0031] 2) Preparation of phosphogypsum light board, adding the modified barium slag slurry obtained in step 1) and phosphorus hemihydrate gypsum, metakaolin, carbide slag, light aggregate, retarder, water reducing agent and water retaining age...
Embodiment 2
[0034] Provide a kind of phosphogypsum lightweight board prepared by barium slag, its component and weight content include:
[0035] 20 parts of barium slag, 10 parts of phosphogypsum dihydrate, 48 parts of phosphorus high-strength gypsum, 12 parts of phosphorus building gypsum, 10 parts of metakaolin, 3 parts of carbide slag, 0.5 parts of light aggregate, and 0.3 parts of water reducer.
[0036] The preparation method steps are as follows:
[0037] 1) Preparation of modified barium slag slurry: mix barium slag and phosphogypsum dihydrate with water at a solid-to-liquid ratio of 1:1.6, and stir at 55°C for 2.5 hours to obtain modified barium slag slurry;
[0038] 2) Preparation of phosphogypsum light board, adding the modified barium slag slurry obtained in step 1) and phosphorus hemihydrate gypsum, metakaolin, carbide slag, light aggregate, retarder, water reducing agent and water retaining agent into the mixer , stirred for 3 minutes, and then the stirred slurry was quickly...
Embodiment 3
[0041] Provide a kind of phosphogypsum lightweight board prepared by barium slag, its component and weight content include:
[0042] 15 parts of barium slag, 7 parts of dihydrate phosphogypsum, 60 parts of phosphorus high-strength gypsum, 15 parts of phosphorus architectural gypsum, 10 parts of metakaolin, 2 parts of carbide slag, 0.8 parts of light aggregate, 0.05 parts of retarder, 0.1 parts of water reducer part, 0.05 part of water retaining agent.
[0043] The preparation method steps are as follows:
[0044] 1) Preparation of modified barium slag slurry: mix barium slag and phosphogypsum dihydrate with water at a solid-to-liquid ratio of 1:2.3, and stir at 50°C for 2 hours to obtain modified barium slag slurry;
[0045] 2) Preparation of phosphogypsum light board, adding the modified barium slag slurry obtained in step 1) and phosphorus hemihydrate gypsum, metakaolin, carbide slag, light aggregate, retarder, water reducing agent and water retaining agent into the mixer ...
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