Burn-free ceramsite

Abstract

The invention relates to novel ceramsite, namely aluminium slag powder burn-free ceramsite which takes aluminium slag powder, slag powder, flue gas desulfurization gypsum and muck (sludge and mud) as raw materials and adopts a small quantity of additive. The burn-free ceramsite is prepared from the following components in percent by weight: aluminium slag powder with the dosage of 3-7 per mill, 40-70% of slag powder, 20-50% of muck, 5-10% of flue gas desulphurization gypsum and additive with the dosage of 1-3%, wherein the sum of the components in percent by weight is 100%. When the burn-free ceramsite provided by the invention is prepared, wastes such as the muck (sludge and mud) and the aluminium slag powder can be recycled and preparation cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of auxiliary materials for building materials, in particular to an unfired ceramsite. Background technique [0002] Building is the symbol of the city. In the process of urbanization, many construction sites produce a large amount of construction waste including silt and mud every day. In addition, ceramsite is often used as the aggregate of thermal insulation wall materials during house construction. However Traditional ceramsite is fired from clay. Firstly, digging clay from the land to fire ceramsite is easy to cause damage to land resources, and the amount of clay suitable for firing ceramsite is limited in a region. It is easy to find suitable clay resources; secondly, sintering is required, which not only wastes fuel energy, but also needs to discharge fuel waste during the firing process, causing environmental pollution. On the other hand, existing metallurgical plants, machinery factories, etc. nee...

AI Technical Summary

Problems solved by technology

[0002] Construction is the symbol of the city. In the process of urbanization, many construction sites produce a large amount of construction waste including silt and mud every day. In addition, the building construction process often It is necessary to use ceramsite as the aggregate of thermal insulation wall materials. However, traditional ceramsite is fired from clay. First, clay is dug from the land to fire ceramsite, which will easily cause damage to land resources, and it is suitable for firing ceramsite. The amount of clay in a region is limited, and it is not easy to find suitable clay resources once it is used up; secondly, it needs to be sintered, which not only wastes fuel energy, but also needs to discharge fuel waste during the firing process, causing environmental pollution

On the other hand, existing metallurgical plants, machinery factories, etc. need to discharge solid waste such as aluminum slag powder. If these solid wastes are recycled, the recycling process is complicated and the recycling cost is high. If they are directly discarded, it will not only occupy land resources, but also Easy to cause damage to the environment and soil