A method for preparing inorganic composite boards by utilizing dealkalized red mud and red mud iron beneficiation tailings
A technology for separating iron tailings from red mud and dealkalizing red mud is applied in sustainable waste treatment, solid waste management, climate sustainability, etc. , large amount of solid waste, energy saving effect
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Embodiment 1
[0016] Take 200 kg of sulphoaluminate cement, 300 kg of dealkalized red mud, 350 kg of red mud iron beneficiation tailings, 10 kg of polyacrylonitrile fiber and 60 kg of water, add boric acid retarder and boric acid to the sulphoaluminate cement The setting retarder accounts for 0.2% of the weight of the aluminosilicate cement, and the sulphoaluminate cement is selected as R.SAC 42.5 cement produced by Qufu Zhonglian Cement Co., Ltd. Sulphoaluminate cement, dealkalized red mud and red mud iron tailings are processed into powder, and the powder diameter requires an 80-micron square hole sieve not to exceed 10%; dealkalized red mud and red mud are used for iron tailings Mineral and polyacrylonitrile fibers are used as the main raw materials, and sulphoaluminate cement added with boric acid retarder is used as the gelling agent. After adding water and water reducer, stir evenly. Among them, the water reducer accounts for sulphoaluminate cement, dealkal 0.6% of the total weight of...
Embodiment 2
[0020] Get 250 kilograms (parts) of sulfoaluminate cement, 400 kilograms of dealkalized red mud, 400 kilograms of red mud iron dressing tailings, 20 kilograms of polyacrylonitrile fibers and 100 kilograms of water, and add boric acid to the sulfoaluminate cement Coagulant, boric acid retarder accounts for 0.2% of the weight of the aluminosilicate cement, and the sulphoaluminate cement is selected from the cement of the model R.SAC 42.5 produced by Qufu Zhonglian Cement Co., Ltd. Sulphoaluminate cement, dealkalized red mud and red mud iron tailings are processed into powder, and the powder diameter requires an 80-micron square hole sieve not to exceed 10%; dealkalized red mud and red mud are used for iron tailings Mineral and polyacrylonitrile fibers are used as the main raw materials, and sulphoaluminate cement added with boric acid retarder is used as the gelling agent. After adding water and water reducer, stir evenly. Among them, the water reducer accounts for sulphoaluminat...
Embodiment 3
[0025] Take 225 kg of sulphoaluminate cement, 350 kg of dealkalized red mud, 375 kg of red mud iron dressing tailings, 15 kg of polyacrylonitrile fiber and 80 kg of water. Add boric acid retarder to the sulphoaluminate cement. The boric acid retarder accounts for 0.2% of the weight of the aluminosilicate cement. The sulphoaluminate cement is selected from the model R.SAC 42.5 produced by Qufu Zhonglian Cement Co., Ltd. . Sulphoaluminate cement, dealkalized red mud and red mud iron tailings are processed into powder, and the powder diameter requires an 80-micron square hole sieve not to exceed 10%; dealkalized red mud and red mud are used for iron tailings Mineral and polyacrylonitrile fibers are used as the main raw materials, and sulphoaluminate cement added with boric acid retarder is used as the gelling agent. After adding water and water reducer, stir evenly. Among them, the water reducer accounts for sulphoaluminate cement, dealkal 0.6% of the total weight of the red mud...
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