CN105585297A - An environmental friendly building material - Google Patents

Abstract

An environmental friendly building material is disclosed. The building material comprises 50-60 parts by weight of sludge, 20-30 parts by weight of shale, 10-15 parts by weight of brown coal, 20-35 parts by weight of gypsum, 35-45 parts by weight of cement, 5-15 parts by weight of chaoite and 25-30 parts by weight of broken stones. The water content of the sludge in the building material is 70% or above and the sludge is rich in organic matters and other combustible volatile substances. The volume reduction ratio and the weight loss ratio of the sludge after firing are high, residues are fixed in a fabricated brick stably, and addition of other chemical additives is not needed. The sludge is rich in organic matters and other combustible volatile substances, and therefore heat of combustion of the combustible substances in the sludge can be fully utilized in a brick firing process, coal which is a raw material used for brick firing can be reduced, and a novel direction for sludge treatment is provided.

Description

A kind of environmental-friendly construction material

Technical field

The present invention relates to a kind of environmental-friendly construction material.

Background technology

Municipal sewage is after adopting clean property Treatment of Sludge method to process, can produce excess sludge, this mud except including organic matter, nitrogen, phosphorus, raise, generally all also include various heavy, in these heavy metals, also also have the concentration of many kinds to exceed agricultural standards, belong to poisonous and harmful substance, can not be placed in agricultural planting, can not be placed in the place that can affect human and livestock health. Have at present multiplely for the processing method of municipal sludge, generally have landfill, burning and comprehensive utilization. Although burying method processing cost is low, because sludge components is unstable, poisonous and harmful substance wherein and pathogenic microorganism can contaminated land and water resources. Utilize mud to prepare construction material and become new research direction.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of environmental-friendly construction material.

For solving the problems of the technologies described above, the technical solution used in the present invention is:

A kind of environmental-friendly construction material, is characterized in that, comprises the material of following parts by weight: 45 parts, mud, 18 parts, shale, 18 parts, brown coal, 40 parts, gypsum, 50 parts of cement, 16 parts of alabasters, blinding 32.

In construction material of the present invention, moisture percentage in sewage sludge is up to more than 70% and be rich in the organic volatile substance that burns that waits, hold reduction rate through subtracting of the municipal sludge fired very large, remnant is stably fixed to be made in fragment of brick, do not need to increase other chemical addition agents, because mud is rich in organic grade for combustible, in adobe sintering procedure, can make full use of the combustion heat of the combustible in mud, reduce the feed coal of the use of baking bricks, for Treatment of Sludge provides new direction.

Detailed description of the invention

Embodiment 1

A kind of environmental-friendly construction material, is characterized in that, comprises the material of following parts by weight: 45 parts, mud, 18 parts, shale, 18 parts, brown coal, 40 parts, gypsum, 50 parts of cement, 16 parts of alabasters, blinding 32.

Claims (1)

1. an environmental-friendly construction material, is characterized in that, comprises the material of following parts by weight: 45 parts, mud, 18 parts, shale, 18 parts, brown coal, 40 parts, gypsum, 50 parts of cement, 16 parts of alabasters, blinding 32.