A kind of river and lake silt-based unfired ultra-light ceramsite and its preparation method and application

Abstract

The invention discloses a river and lake silt-based non-fired ultra-light ceramsite and its preparation method and application. The river and lake silt-based non-fired ultra-light ceramsite is made of the following raw materials in weight percentage: wet river and lake silt: 60-80%, building gypsum: 1-10%, cement: 15-30%, waste foam: 1-10%, polyvinyl alcohol: 1-5%. The present invention turns river and lake silt-like solid wastes into resources and utilizes them, and overcomes the disadvantages of low strength and high water absorption of the existing non-burning ultra-light ceramsite, and provides a low energy consumption, no need for firing, River and lake silt-based ultra-light unfired ceramsite with excellent performance. The present invention does not need to dry and dehydrate river and lake sludge, reduces costs, and can consume a large amount of river and lake sludge with high water content and a small amount of waste foam, realize waste utilization and replace natural traditional ceramsite raw materials with a high proportion, and the production energy consumption is low. The produced river and lake silt-based non-fired ultra-light ceramsite can meet the needs of industrial filter materials and building materials markets.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a method of river and lake mud-based non-burning ultra-light ceramsite prepared from river and lake mud with high water content, a preparation method and application thereof. Background technique [0002] At present, the high-intensity economic activities in the world and the continuous development of industry and agriculture have caused large-scale water pollution. River and lake silt and other sediments are important carriers of water pollution. River and lake silt has complex components and contains a large amount of toxic and harmful substances such as organic matter and heavy metals. , These substances continuously transfer and diffuse to the upper water in the water flow environment, not only causing a series of ecological damage such as eutrophication of the water body, black odor, etc., but also enriching in organisms step by step through the food chain, there...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: Aiming at the problems existing in the prior art, the present invention provides a river and lake silt-based non-burning ultra-light ceramsite. Some non-fired ultra-light ceramsites have disadvantages such as low strength and high water absorption, and provide a river and lake mud-based non-fired ultra-light ceramsite with low energy consumption, no need for firing, and excellent performance.