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Wall material prepared from urban and rural household refuse and preparation process thereof

A technology for domestic waste and wall materials, applied in the field of making wall materials, can solve problems such as endangering the physical and mental health of agricultural production, not being well resolved, and surrounding land pollution, etc., to achieve ecological balance, high utilization rate, Good anti-freeze performance

Inactive Publication Date: 2016-05-25
曲伟 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The serious problem in reality is that the comprehensive utilization rate is low and the storage capacity is increasing year by year. If the comprehensive utilization is not carried out effectively, it will inevitably lead to environmental pollution, occupy land resources, destroy ecological balance, endanger agricultural production and people's physical and mental health, and form public hazards.
At present, the only treatment methods for urban and rural domestic waste in my country are incineration and landfill. Incineration causes air pollution and worsens air quality.
Landfilling causes a large amount of land to be occupied and the surrounding land to be polluted
So far, the comprehensive utilization of urban and rural domestic waste has not been well resolved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The weight ratio of ingredients is: processed domestic garbage: 100 parts, cinder: 10 parts, slag: 10 parts, lime: 5 parts, stone powder: 6 parts, cement: 10 parts. Put the lime into a ball mill to grind for 10 minutes, then add other main and auxiliary materials and special additives: sodium silicate: 5 parts, calcium chloride: 1 part, and add 20% of the total weight of water at the same time. Put the above materials together into a strong mixer, stir for 5 minutes, transport to a high-efficiency planetary wheel mill for 5 minutes, and press it into a wall material blank on a 150-ton brick press. In a sealed condition, it is cured at 100° C. under normal pressure for 24 hours to obtain the product domestic waste pressed wall material. Finished wall material compressive strength: 18.6MPa, dry mass loss: 1.5%, drying shrinkage value: 0.65mm / m.

Embodiment 2

[0044] The ratio of raw materials used: treated domestic waste: 100 parts, slag: 20 parts, lime: 6 parts, stone powder: 5 parts, cement: 5 parts, sodium silicate: 0.5 parts, calcium chloride: 0.1 parts, total The water of 20% by weight, front operation procedure and step are with embodiment 1. Curing temperature: 90°C, 12 hours of curing. Get the product Household Waste Pressed Wall Material. Finished wall material compressive strength: 17.1MPa, dry mass loss: 1.6%, drying shrinkage value: 0.62mm / m.

Embodiment 3

[0046]The ratio of raw materials is: processed domestic waste: 100 parts, coal cinder: 20 parts, lime: 10 parts, stone powder: 15 parts, stone salt: 10 parts, cement: 5 parts, sodium silicate: 0.5 parts, calcium chloride : 0.5 part, add water when stirring and be 20% of gross weight, operation procedure and step are with embodiment 1. Curing temperature: 90°C, 12 hours of curing. The obtained domestic garbage load-bearing wall material has a compressive strength of 16.4 MPa, a dry mass loss of 1.5%, and a drying shrinkage value of 0.32 mm / m.

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Abstract

The invention provides a wall material prepared by pressing waste, i.e., urban and rural household refuse. Treated urban and rural household refuse, coal slag, slag, limestone, stone flour, aggregate chips and cement are used as raw materials and a mixture of specially prepared additives, i.e., sodium silicate and calcium chloride are added so as to prepare the household refuse wall material according with standard. A green body of the wall material does not need sintering and is maintained at a constant temperature of 90 to 100 DEG C for 8 to 24 h or steam-cured at a pressure of 6 to 8 kg / cm for 6 to 8 h so as to obtain the wall material. According to the invention, an end is put to secondary pollution in treatment of urban and rural household refuse; the proportion of urban and rural household refuse used in preparation and pressing of the wall material is high; the specially prepared additives are added in proportion; anti-compression and flexural strength of the household refuse wall material is improved; the disadvantage of a great drying shrinkage value is overcome; and the prepared wall material has good resistance to freezing and thawing and good cleanness. The wall material and the preparation process thereof are of great social significance to national enforcement of ecological balance and environmental protection in China and to reduction and reclamation of urban and rural household refuse.

Description

technical field [0001] The invention relates to the comprehensive utilization of wastes - urban and rural domestic wastes to make wall materials. Background technique [0002] In the vast areas of our country, with the achievements of reform and opening up, people's living standards have been greatly improved, and the discharge of domestic waste has increased year by year, making urban and rural domestic waste resources very rich. The annual discharge of domestic waste has reached hundreds of millions of tons, and the cumulative stock of waste has exceeded 7 billion tons, occupying more than 800,000 mu of land. The harmless disposal of waste has become an important obstacle to the sustainable development of our country. The serious problem in reality is that the comprehensive utilization rate is low and the storage capacity is increasing year by year. If the comprehensive utilization is not carried out effectively, it will inevitably lead to environmental pollution, occupy l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B18/30
CPCY02W30/91
Inventor 曲伟邸玉臣曲剑英张丽梅
Owner 曲伟