Method for preparing sewage flocculation sedimentation agent, soil curing agent and foam concrete by using red mud, gangue and/or fly ash

Abstract

The invention discloses a method for preparing sewage flocculation sedimentation agent, soil curing agent and foam concrete by using red mud, gangue and / or fly ash. Red mud, gangue and / or fly ash should be taken in parts by weight and mixed together firstly. Then the method comprises three technical steps of: (a) adding solid sodium silicate powder into a part of the mixed powder material to obtain the sewage flocculation sedimentation agent; (b) adding solid sodium silicate powder and calcium lignosulphonate powder into a part of the mixed powder material to obtain the soil curing agent; (c)adding regeneration machine-made sand and / or regeneration machine-made bone grain, water, additive and alkali resistant fiber to a part of the mixed powder material to obtain the foam concrete. By the method in the invention, the target of being harmless, material-saving, stable and recyclable in the whole environment friendly process is realized. At the same time, the ultimate goal of zero release, high utilization ratio, high additional value and industrial production is achieved, and an industry chain and an industry group are formed by using multi-disciplinary technology in various fieldsto recycle and utilize the waste for waste treatment.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a method for preparing sewage flocculation-settling agent, soil solidifying agent and foamed concrete by using construction waste such as red mud, coal gangue or / and fly ash. Background technique [0002] Foamed concrete is a lightweight porous material. It is called the four major inorganic foam materials together with foam glass, foam ceramics and aluminum foam. It is the functional material with the largest production and sales volume and the most promising development prospects among the four major inorganic foam materials. [0003] Foamed concrete is one of the most significant scientific and technological advances since cement concrete was produced in more than 100 years. It makes heavy cement concrete lightweight and functional, endowing it with light weight, heat preservation, heat insulation, sound absorption, sound insulation, fire resistance, fire prevent...

AI Technical Summary

Problems solved by technology

Although foam concrete has many advantages, the current production cost is still relatively high