Wet-discharging fly ash composite carbide slag blending slurry and method for preparing the same

Abstract

The invention relates to highly active mineral admixture slurry and a preparation method thereof. Wet fly ash composite carbide slag admixture slurry is characterized in that the slurry is made from wet fly ash, carbide slag, a modifier and water after the wet filling. The weight portions of the components are 65-75 portions of the solid content of the wet fly ash, 22-34 portions of the solid content of the carbide slag, 1-3 portions of the modifier and 80-100 portions of the water. The water includes the weight of the water in the wet fly ash and the carbide slag. The moisture content (weight) of the wet fly ash is 25-35 percent, the content of free calcium oxide is less than or equal to 2.5 percent, the content of sulfur trioxide is less than or equal to 3 percent, the carbon content is less than or equal to 12 percent, and the Blaine specific surface area is 350-400m<2> / kg. The modifier consists of a strengthening agent and a surface modifier. The modifier weight percent of the components is 30-40 percent of the strengthening agent and 60-70 percent of the surface modifier. The invention overcomes a problem that the wet fly ash and the carbide slag are hard to be utilized and has the advantages of simple production process, low cost, high waste utilization rate, high activity, high performance of prepared concrete, etc.

Description

technical field [0001] The invention belongs to building materials, and in particular relates to a highly active mineral blend slurry and a preparation method thereof. Background technique [0002] With the continuous development of industry, the generation of industrial solid waste in our country is increasing day by day, which has caused serious burdens to the economy, society and environment. Up to now, the accumulation of fly ash in my country has reached more than 1.3 billion tons, covering an area of ​​more than 500,000 mu. The fly ash dust collection process mainly includes dry discharge and wet discharge, but most thermal power plants generally adopt the method of dry collection and wet discharge or wet collection and wet discharge in order to facilitate storage and transportation and avoid flying ash. However, due to the low early activity of the vitreous body, slow reaction, high water content, and large fluctuations in composition, wet-discharged fly ash cannot b...

AI Technical Summary

Problems solved by technology

At present, the research on the use of calcium carbide slag focuses on replacing limestone to produce cement clinker, but there are problems such as unstable performance and high energy consumption costs.