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Method for preparing inorganic composite board from dealkalized red mud and red mud iron ore dressing tailings

A red mud technology for iron tailings and dealkalized red mud is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc. It can solve problems such as waste of resources, potential safety hazards, and loss of national economic construction, and achieve Energy saving, large amount of solid waste, and environmental protection

Inactive Publication Date: 2016-06-15
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These solid wastes cannot be utilized as resources, occupy land, waste resources, and easily cause environmental pollution and safety hazards, which have brought huge losses to people's production, life and national economic construction.

Method used

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  • Method for preparing inorganic composite board from dealkalized red mud and red mud iron ore dressing tailings
  • Method for preparing inorganic composite board from dealkalized red mud and red mud iron ore dressing tailings
  • Method for preparing inorganic composite board from dealkalized red mud and red mud iron ore dressing tailings

Examples

Experimental program
Comparison scheme
Effect test

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 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 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 weigh...

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.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 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...

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, and 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 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 th...

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Abstract

The invention discloses a method for preparing an inorganic composite board from dealkalized red mud and red mud iron ore dressing tailings. The inorganic composite board is characterized by comprising the following ingredients in parts by weight: 200-250 parts of sulphoaluminate cement, 300-400 parts of the dealkalized red mud, 350-400 parts of the red mud iron ore dressing tailings, 10-20 parts of polyacrylonitrile fibers and 60-100 parts of water. The inorganic composite board is prepared by taking the sulphoaluminate cement as a gelatinizing agent and the dealkalized red mud, the red mud iron ore dressing tailings and the polyacrylonitrile fibers as main raw materials through a pressing formation process and is cured in air. The prepared inorganic composite board has the excellent characteristics of light weight, high strength, sound insulation, flame resistance, impact resistance and the like, and can be widely applied to interior or exterior walls of buildings; the composite board is high in industrial solid waste consumption amount so as to be beneficial to energy saving and environmental protection and capable of realizing the development of novel board products for the field of building energy conservation.

Description

technical field [0001] The invention relates to the field of novel wall materials, in particular to a method for preparing an inorganic composite board by utilizing dealkalized red mud and red mud iron-separation tailings. Background technique [0002] The comprehensive utilization of industrial waste resources and building energy conservation have become the basic national policy of our country. Therefore, it is imminent to use bulk industrial waste to develop new building materials that meet the composite national standards, and it has become the inescapable responsibility of the majority of scientific research workers. [0003] Inorganic composite materials have attracted wide attention in the application of interior and exterior wall panels in the construction industry due to their advantages such as stable performance, small deformation coefficient, and strong anti-aging performance. Therefore, the application of composite boards prepared from inorganic solid materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B18/04
CPCY02W30/91C04B28/06C04B2201/20C04B2201/50C04B22/0013C04B18/0409C04B16/0658
Inventor 段广彬张秀芝王文龙刘宗明侯清月
Owner UNIV OF JINAN