An inorganic composite board prepared by using dealkalized red mud and red mud iron beneficiation tailings and its preparation method
A technology for red mud separation of iron tailings and dealkalized red mud, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as waste of resources, potential safety hazards, land occupation, etc., and achieve energy saving , environmental protection, large amount of solid waste
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Embodiment 1
[0018] 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 from the model R.SAC42.5 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 to have no more than 10%; use dealkalized red mud and red mud to separate 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 t...
Embodiment 2
[0022] Take 250 kg (number of parts) of sulphoaluminate cement, 400 kg of dealkalized red mud, 400 kg of red mud iron beneficiation tailings, 20 kg of polyacrylonitrile fiber and 100 kg of water, and add boric acid to the sulphoaluminate cement Coagulant, boric acid retarder accounts for 0.2% of the weight of aluminosilicate cement, and the sulphoaluminate cement is selected from the model R.SAC42.5 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 to have no more than 10%; use dealkalized red mud and red mud to separate 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 ...
Embodiment 3
[0026] 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.SAC42.5 produced by Qufu Zhonglian Cement Co., Ltd. cement. 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 to have no more than 10%; use dealkalized red mud and red mud to separate 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...
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