Tempered sponge brick produced by using urban construction garbage by treating waste with waste

Abstract

The invention discloses a tempered sponge brick produced by using urban construction garbage by a method of treating waste with waste. Residual mud muck and construction garbage are used as base materials; greening garbage and waste wood organic matters are dried and then are used as internal combustion fuel and combustion-supporting gas; and a tempered sponge agent and a large-size vibration prop vertical kiln are used for producing the tempered sponge brick. The method has the advantages that the waste is treated with the waste, a small-size vertical kiln is changed into a large size, the brick strength is high, the porosity is great, the energy is saved and the emission is reduced and the like; and the tempered sponge brick is suitable for being widely applied to urban construction.

Description

technical field [0001] The invention relates to a method for producing toughened sponge bricks from urban construction waste, more specifically, designing a method for treating waste generated in urban construction with waste, adding toughened sponge agent, and using large-scale vibration to top open a shaft kiln to produce toughened sponge bricks . Background technique [0002] With the rapid development of my country's economy, the reconstruction of old cities and the construction of new cities across the country are moving forward with each passing day, resulting in more and more residual mud, construction waste and green waste. Just take Shenzhen as an example : Excavation of foundations for new buildings, excavation of roads, and excavation of subway tunnels produce more than 20 million cubic meters of waste per year; there are also construction waste generated by the renovation of old cities, which is more than 6 million cubic meters per year; the resulting waste wood M...

AI Technical Summary

Problems solved by technology

The old kilns have been eliminated, and there are three types of continuous kilns: one is the wheel kiln, which adopts the process of "fire moving bricks without moving" and relies on manual kiln loading and unloading, which is labor-intensive and has been basically eliminated now; the second is the tunnel kiln. The kiln adopts the technology of "bricks go out of the fire and does not move". The gradually moving brick adobe passes through 5 roasting zones on the kiln car. The disadvantage of this kiln is that the kiln car investment is too large, which does not meet the economic level of the vast rural areas, and it is difficult to further develop The third type is: energy-saving small shaft kiln, which does not consume power, can use the waste heat of flue gas, use the internal combustion mixed with bricks to burn bricks, and heat the combustion-supporting air at the same time, relying on the vertical height of the kiln chamber and the temperature difference between the inside and outside of the kiln The negative pressure generated realizes the operating conditions of natural negative pressure combustion and positive pressure moisture discharge, so it can save coal by about 80% compared with earth kilns. Energy-saving small shaft kilns are currently energy-saving, practical and popular advanced small brick kilns. However, the biggest problem for small shaft kilns is that manual operation is required for discharging materials, which is difficult, poor working conditions, and low output, and large-scale production operations cannot be realized.

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