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Method for preparing concrete from solid waste, prepared concrete and method for recycling solid waste

A solid waste recycling technology, which is applied in the field of preparing concrete from solid waste, the resulting concrete, and the recycling of solid waste, can solve environmental hazards and other problems, and achieve the effect of avoiding pollution

Inactive Publication Date: 2017-06-23
HAPPY TEN THOUSAND REVITALZES LIMITED
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing concrete from solid waste, a recycling method for the produced concrete and solid waste, so as to solve the problem that alkaline solid waste in the prior art will seriously endanger the environment

Method used

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  • Method for preparing concrete from solid waste, prepared concrete and method for recycling solid waste
  • Method for preparing concrete from solid waste, prepared concrete and method for recycling solid waste
  • Method for preparing concrete from solid waste, prepared concrete and method for recycling solid waste

Examples

Experimental program
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Effect test

Embodiment 1

[0060] First, put 1 kg of alkaline solid waste into the container. At the same time, it is measured that the pH value of the solid waste is between 12 and 13, which means that the solid waste is indeed alkaline.

[0061] Next, technical grade iron(II) sulfate (approximately 90 to 98% by weight) was added to the container. Wherein, the weight ratio of iron(II) sulfate / solid waste is between 5 and 25%.

[0062] Then, the iron(II) sulfate and the solid waste are reacted with stirring at room temperature for about 1 to 10 minutes. Thereby, iron (II) sulfate and solid waste form a mixture of reddish-brown iron (II) hydroxide and white calcium sulfate. After the reaction is completed, the pH of the mixture is between 7 and 9, so that the solid waste can be effectively de-alkalized. Such as Figure 5 As shown (solid points: 15%, hollow points: 30%), the pH value of the concrete in Example 1 has no significant change in the period up to 28 days after the reaction, which means that...

Embodiment 2

[0065] First, put 1 kg of alkaline solid waste into the container. At the same time, it is measured that the pH value of the solid waste is between 12 and 13, which means that the solid waste is indeed alkaline.

[0066] Next, technical grade dilute sulfuric acid (0.5M, 1 to 10 mL) was added to the vessel. Wherein, the weight ratio of sulfuric acid / solid waste is between 5 and 25%.

[0067] The sulfuric acid is then reacted with the solid waste with stirring at room temperature for about 1 to 10 minutes. In this way, sulfuric acid and solid waste are formed into a mixture of water and white calcium sulfate. After the reaction is completed, the pH of the mixture is between 6 and 7, so that the solid waste can be effectively de-alkalized. Such as Figure 7 As shown (15%), the pH value of the concrete of embodiment two has no significant change in the period up to 28 days after the reaction, which means that the hydroxide radicals in the solid waste have been transferred to t...

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Abstract

The invention discloses a method for preparing concrete from solid waste, the prepared concrete and a method for recycling and treating the solid waste. The method for preparing concrete with solid waste and the method for recovering and treating the solid waste are to form sediments through alkali-removing reagents and solid waste. In this way, the alkalinity of the solid waste can be transferred into the sediment. And, through the drying step and the curing step, the sediment can be prepared into concrete. In this way, the dual purposes of waste recycling and resource reuse can be achieved by recovering and reusing solid waste.

Description

technical field [0001] The invention relates to a method for preparing concrete from solid waste, the prepared concrete and a method for recycling the solid waste, in particular to a method for preparing concrete with alkaline solid waste, and the prepared concrete and recycling of solid waste. Background technique [0002] With the development of science and technology, people's consumption of environmental resources has also increased. With the continuous consumption of resources, problems such as resource shortage and resource depletion have gradually emerged. Therefore, in recent years, issues such as waste reduction and resource reuse have become the focus of attention from all walks of life. [0003] As far as the petroleum industry is concerned, a considerable amount of resources are required to be consumed from the extraction of crude oil to the subsequent refining process. For example, in order to improve the quality of oil, the sulfur in the oil is usually remov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B18/30C04B28/00
CPCY02W30/91
Inventor 李丁兴林文舜谢建德
Owner HAPPY TEN THOUSAND REVITALZES LIMITED
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