Technique for reclaiming and utilizing building garbage and industrial solid castoff

Abstract

The invention pertains to the manufacturing technical field of construction wall materials, which relates to the recovery and utilization technology of solid wastes at the same time. The invention is characterized in that construction garbage used as main material and industrial solid wastes used as auxiliary materials are mixed with gelling agent and additive and stirred by adding water; the mixture obtained is made into the construction wall materials through compression moulding and maintenance. The proportion of each component is calculated in percentage by weight: 35 percent to 85 percent of the construction garbage, 25 percent to 65 percent of the industrial solid wastes, 5 percent to 20 percent of the gelling agent and 0.01 percent to 0.1 percent of the additive. The components of the construction garbage are: 55-65 percent of waste sintering clay production, 25-35 percent of waste solid mortars and 8-15 percent of waste concrete. Compared with the present technology, the invention has light weight, high intensity and low cost. Furthermore, the invention can not only be used for producing blocks, special shaped bricks, standard bricks, hollow bricks, solid bricks, etc. materials that are used for various construction walls, but also can be used for producing square pavement, sidewalk bricks, shielding-slope bricks, etc.

Description

technical field [0001] The invention belongs to the technical field of building wall material production, and at the same time relates to solid waste recycling technology, specifically providing a technical method for recycling construction waste and industrial waste. Background technique [0002] With the rapid development of my country's urban construction and industrial economic construction, the solid waste generated during the demolition and construction of construction projects has increased significantly year by year. According to statistics, the annual construction waste generated by demolition and new construction in my country has reached 50-80 million At the same time, the discharge of industrial solid waste is also increasing day by day. In 2006, the discharge amounted to 1.52 billion tons. The main components are tailings 29%, fly ash 19%, coal gangue 17%, slag 12%, metallurgical Waste residue 11%, other waste 12%. The hoarding and stacking of these large amounts...

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly two methods for the treatment of industrial solid waste such as construction solid waste and fly ash. The first method is to collect and landfill. This method is generally carried out for long-distance transportation and landfill at the place designated by the environmental sanitation department. This method not only spends a large amount of transportation costs, but also takes up a large amount of land and pollutes the land resource environment; the second method is comprehensive recycling, which generally uses solid waste (mostly industrial waste residues, such as fly ash and furnace slag) , construction waste has not been used on a large scale so far) and a variety of inorganic chemical materials, react at room temperature or high temperature, solidify, and press into building wall materials. Although this method is a better way for waste recycling, there are still some problems The shortcomings are mainly manifested in: the cost of sintered bricks is high, and there is a problem of secondary pollution; although there is no problem of secondary pollution in unfired bricks, the pressure strength, water resistance, and Indices such as heat insulation and freeze-thaw resistance often fail to meet the requirements of national standards, thus limiting the large-scale promotion and application of this method

At present, the utilization rate of solid waste in my country is only about 60%, which is far below the level of industrially developed countries.