Lightweight ceramsite fired from solid waste and method thereof

Abstract

The invention provides a lightweight ceramsite fired from solid wastes and a method thereof. The invention relates to a method for firing light ceramsite by using solid wastes. The method comprises the following steps: S1, preparing materials: selecting an undisturbed raw material of gold tailings, an undisturbed raw material of waste incineration fly ash and polluted soil for later use; s2, preparing a core: adding water into the raw materials in the S1, and mixing to prepare a mixture containing the core; s3, balling and screening: adjusting and preparing water quantity for balling, and selecting wet raw material balling; s4, drying and dehydrating: drying and dehydrating the wet raw material nodules to obtain dry raw material nodules; and S5, firing: transferring the dry raw material pellets into a roasting furnace, preheating, roasting and cooling to obtain the lightweight ceramsite. According to the light ceramsite fired by utilizing the solid waste and the method thereof, the gold tailings are used as the main raw material, the waste incineration fly ash is matched as the fluxing agent and the binder, then the polluted soil is added as the plastic material, and the light ceramsite fired by utilizing the solid waste has excellent performance through the processes of granulation, drying, preheating, roasting and the like; the method for firing the light ceramsite by using the solid wastes has the advantages of high preparation efficiency, low energy consumption and low cost, realizes full resource utilization of the gold tailings, the waste incineration fly ash and the polluted soil, and has good economic benefits, environmental protection benefits and social benefits.

Description

technical field [0001] The invention relates to a lightweight ceramsite fired by using solid waste and a method thereof, belonging to the technical field of resource utilization of solid waste. Background technique [0002] Lightweight ceramsite is a lightweight aggregate produced by high temperature foaming in a rotary kiln. It has a sphere-like appearance, a smooth and hard surface, and a porous interior. At the same time, the lightweight ceramsite has the advantages of light weight, heat insulation, heat insulation, sound insulation, frost resistance, shock resistance and corrosion resistance, low density, high porosity, strong adsorption capacity, stable chemical properties, water absorption, ventilation, and fertilizer holding capacity. With excellent properties such as no muddy water and excellent fire resistance, it is widely used in important fields such as building energy saving, environmental purification, landscaping, petrochemical industry and so on. With the co...

AI Technical Summary

Problems solved by technology

[0006] A comprehensive analysis of previous studies mostly focused on the mixing of waste incineration fly ash and solid waste such as silt, sludge, red mud, waste glass, clay, waste soil, and saline soil to burn lightweight ceramsite. The high content is beneficial to the firing of light ceramsite, but it is difficult to obtain and the output is small, so the production scale of light ceramsite is limited; the sum of the content of silica and alumina in other types of solid waste is not very high, Therefore, the ability to supplement the sum of silica and alumina content of fly ash with the current ultra-low sum of silica and alumina content is insufficient

Images