Pulverized fuel ash light-weight wallboard and preparation method thereof

Abstract

The invention discloses a pulverized fuel ash light-weight wallboard and a preparation method thereof. The light-weight wallboard is prepared from the following ingredients in parts by weight: 70 parts of pulverized fuel ash, 20 parts of cement and 5 parts of fibrous matters. The preparation method comprises the following steps that the pulverized fuel ash, the cement and the fibrous matters are subjected to dry stirring according to the proportion; the materials subjected to the dry stirring are input into a wet stirring machine; meanwhile, a proper amount of water is added for wet stirring; the materials are conveyed to an extrusion forming machine for extrusion forming to obtain a wet blank wallboard; the extrusion formed wet blank wallboard is measured and cut; the wet blank wallboard is conveyed into a steam maintenance system for maintenance; the maintained wallboard is pushed into a high-pressure steam curing kettle for maintenance again; finished product wallboards are stacked and packaged to leave the factory. Compared with the prior art, the pulverized fuel ash light-weight wallboard and the preparation method have the advantages that under the condition of guaranteeing the strength, the used pulverized fuel ash can reach 70 percent, so that the utilization rate of the pulverized fuel ash is improved; meanwhile, the pulverized fuel ash in the light-weight wallboard has a filling effect; the advantage of good ageing resistance performance is also realized.

Description

technical field [0001] The invention relates to a fly ash lightweight wallboard and a preparation method thereof, belonging to the technical field of fly ash recovery and utilization. Background technique [0002] Fly ash is the fine ash collected from the flue gas after coal combustion. Fly ash is the main solid waste discharged from coal-fired power plants. The main oxide composition of fly ash in thermal power plants in my country is: SiO2, Al2O3, FeO, Fe2O3, CaO, TiO2, etc. With the development of the power industry, the discharge of fly ash from coal-fired power plants has increased year by year, becoming one of the largest industrial wastes in my country. If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere; if it is discharged into the water system, it will cause river silting, and the toxic chemicals in it will also cause harm to human beings and organisms. At present, the technology for fly ash recycling includes sintering ...

AI Technical Summary

Problems solved by technology

If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere; if it is discharged into the water system, it will cause river silting, and the toxic chemicals in it will also cause harm to humans and organisms

At present, the technology for fly ash recycling is sintering into ceramsite, but there is no report on its use in the manufacture of building wall panels

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