Light foam soil prepared from alumina tailing and preparation method of light foam soil

Abstract

The invention provides a light foam soil prepared from an alumina tailing and a preparation method of the light foam soil. The preparation method of the light foam soil comprises a cement paste liquidand a foaming system, the cement paste liquid mainly comprises the following components of cement, the alumina tailing, a water reducer and water, wherein the water cement ratio is 0.2-1.0, the massratio of the alumina tailing to the cement is (0.2-5):1, the mass of the water reducer accounts for 0.4-0.6% of the mass of the cement paste liquid; the foaming system mainly comprises the following components: 0.5-2 parts of a foaming agent, 0.1-0.3 part of a foam stabilizer, and 0.05-1 part of a micro foaming agent and 100 parts of water. The light foam soil has the characteristics of good viscosity and plasticity of the alumina tailing, and the light foam soil with high degree of density, good durability and good anti-permeability.

Description

technical field [0001] The invention relates to the technical field of tailings treatment, in particular to lightweight foamed soil prepared from bauxite tailings and a preparation method thereof. Background technique [0002] The aluminum industry is a pillar industry of my country's industry. After the bauxite raw ore is selected, ground, and washed, the remaining tailings slurry is pumped and filled into the sludge discharge tank for storage. There are hundreds of bauxite sludge discharge tanks in my country. In karst areas, the hydrogeological conditions in this area are complex, karst is mostly developed on the surface or in shallow layers, and there are many karst caves and sinkholes. Coupled with the influence of external disturbances such as long-term rainfall and earthquakes, it is very easy to induce karst cave collapse, mud discharge reservoir slopes and Accidents such as leakage of tailings mud at the bottom have caused huge economic losses to the enterprise and lo...

AI Technical Summary

Problems solved by technology

As far as grouting materials are concerned, the cost of chemical grouting materials is high, and the corrosiveness and toxicity of the grouting materials will cause certain pollution to groundwater

Among the cement grouts, the cement grout gels for a long time. In the case of strong groundwater activities in karst areas, the grout is easily diluted and washed away, resulting in increased grouting costs and poor results; cement-water glass grout is easy to form crests. The stone body reduces the strength and anti-seepage performance. At the same time, its grouting process is complicated, and it is easy to cause the pipe blockage and pump phenomenon during the construction process; the early strength of the fly ash slurry stone body is low, and the plasticity and ductility are poor, so it cannot be well adapted The soil is deformed, and due to the use of high-grade concrete, qualified fly ash is expensive

[0004] The bauxite mud discharge pond not only occupies a large amount of land, but also pollutes groundwater sources. At the same time, due to the fine particles of bauxite tailings, it is easy to form blowing sand and cause air pollution.