Method for preparing artificial vesuvianite building block from Bayer red mud

Abstract

The invention discloses a method for preparing an artificial vesuvianite building block from Bayer red mud. The method for preparing the artificial vesuvianite building block from Bayer red mud comprises the following steps of carrying out milling and slurrying of Bayer red mud, carrying out mixing and blank preparation, carrying out drying and sintering, and carrying out cooling. The method for preparing the artificial vesuvianite building block from Bayer red mud has a low investment cost and simple processes, realizes the preparation of the artificial vesuvianite building block which is a novel artificial non-metallic porous material vesuvianite building block, and provides a novel and reliable approach for Bayer red mud comprehensive utilization. Because of addition of fine coal powder, a leavening agent, a foaming agent and a molding binder in ingredients, a sintered blank has regular or irregular micro-apertures, small apertures and big apertures thereby forming the artificial vesuvianite building block which is a sponge-like ceramic building product. The artificial vesuvianite building block can absorb sound, reduce noise, improve a hearing environment, adjust air humidity by its unique breathing function and improve an ecological environment. Therefore, the artificial vesuvianite building block can be widely utilized for masonry building, floor building and wall decoration, and is an ideal, eco-friendly and energy-saving building and decorative material.

Description

technical field [0001] The invention relates to a comprehensive utilization method of Bayer red mud tailings, in particular to a method for producing artificial volcanic stone blocks by using Bayer red mud. Background technique [0002] Natural volcanic stone (commonly known as pumice or porous basalt) is a functional environmental protection material. It is a very precious porous stone formed by volcanic glass, minerals and air bubbles after a volcanic eruption. It has many pores, light weight, high strength, heat preservation, With the advantages of heat insulation, sound absorption, fire prevention, acid and alkali resistance, corrosion resistance, no pollution, no radioactivity, etc., it can be widely used in indoor, external wall and floor decoration, replacing traditional natural stone and artificial ceramic tiles, and can also be widely used in municipal Squares, roads and roadbed masonry and solid wall masonry of housing construction, etc. Therefore, it is an ideal n...

AI Technical Summary

Problems solved by technology

[0005] Red mud is the solid waste discharged during the alumina production process. It is one of the main industrial wastes with large discharge volume, serious harm to the natural environment and difficult to use. It is named because its appearance color is similar to red soil; In 2006, my country's alumina output was about 9.5 million tons, and the discharge of red mud was about 10 million tons. Adding the cumulative accumulation over the years, the amount exceeded 100 million tons, and the utilization rate was only about 15%. At present, the world's annual About 60 million tons of red mud are discharged, and most of the red mud can only be stored by damming and intercepting. The storage of red mud not only takes up a lot of land, but also easily causes land alkalization and water pollution, and is also a waste of resources. , seriously hampering the sustainable development of the aluminum industry