Wet fly ash gelled material and preparation method thereof

Abstract

The invention aims to provide a wet fly ash gelled material with high intensity and low cost and a preparation method thereof. According to the method, wet fly ash is used as a main raw material and the preparation method solves the problem of recovering an industrial solid waste of the wet fly ash. The wet fly ash gelled material is prepared from the following raw materials in percentage by mass: 45 to 66 percent of dried wet fly ash, 28 to 49 percent of active mineral material and 1.5 to 8 percent of chemical curing agent, wherein the active mineral material is prepared from the following raw materials in percentage by mass: 10 to 60 percent of blast furnace slag, 10 to 50 percent of cement clinker, 10 to 40 percent of metakaolin and 5 to 10 percent of gypsum; and the chemical curing agent is prepared from the following raw materials in percentage by mass: 3 to 30 percent of aluminum sulphate, 5 to 30 percent of potassium carbonate, 5 to 30 percent of sodium silicate, 5 to 40 percent of sodium carbonate, 5 to 30 percent of sodium sulphate and 10 to 60 percent of water reducing agent.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a wet-drained fly ash gelling material and a preparation method thereof. Background technique [0002] With urbanization and industrial development, the amount of industrial solid waste is also increasing. Fly ash is the solid waste produced after the combustion of pulverized coal in thermal power plants. Set in fly ash. Fly ash is divided into dry ash discharge and wet ash discharge according to different discharge methods. Wet discharge fly ash is collected by a water film dust collector before the flue gas is discharged into the air, and is conveyed together with water. The pump and conveying pipeline discharge the fly ash directly into the ash storage tank. Due to the consideration of dust pollution and stacking factors, the fly ash in the ash storage yard is generally wet-discharged fly ash. The wet-discharged fly ash is mixed with water and bottom ash, which has more im...

AI Technical Summary

Problems solved by technology

If we use wet-discharged fly ash and other raw materials to grind finely in a water-containing state to make mixed materials, it is also not conducive to storage and transportation. The product can only be multi-component, which is not conducive to industrial production. Wet-discharged fly ash problems such as insufficient active utilization of

It is precisely because of the above reasons that wet-discharged fly ash has not been truly utilized as a resource, and no industrialized wet-discharged fly ash product has been formed.

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