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High-strength phosphogypoum building block and preparation method

A technology of building blocks and phosphogypsum, which is applied in construction, building components, building structures, etc., can solve the problems that the technology has not been accepted and recognized by enterprises and society, the product strength and quality are unstable, and it has not been put into industrial implementation. , to achieve the effect of protecting land resources and atmospheric environment, high compressive strength, and reducing porosity

Inactive Publication Date: 2003-08-06
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most technically deficient part of the building blocks made by these two technologies is that the compressive strength of the blocks is relatively low, generally only 4.5-7.5 MPa, and the strength and quality of the products are not stable, so it is difficult to adapt to the requirements of modern buildings. Building Material Requirements
It is precisely because of this reason that these technologies have not been accepted and recognized by enterprises and society, so they have not been put into industrial implementation

Method used

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  • High-strength phosphogypoum building block and preparation method
  • High-strength phosphogypoum building block and preparation method
  • High-strength phosphogypoum building block and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The raw material components of the high-strength phosphogypsum building blocks are: 20 parts of phosphogypsum, 1.5 parts of fly ash, 8.5 parts of sand, 1 part of sodium sulfate, 4.3 parts of calcium oxide, and 8 parts of water. The production and preparation method of the block is as follows: put the above-mentioned solid raw materials into the stirring device, add 1 / 2 of the amount of water to fully stir, after mixing evenly, send the materials into the aging bin, and the materials undergo digestion reaction during the static process, so that It becomes clinker. The digestion reaction time is about 10 hours. Put the matured material into the stirring device and stir, after stirring evenly, put the material into the mold of the block forming press, and press it into the building block of the designed shape. The compression strength of the compression molding is 25MPa. The pressed blocks are left to stand for 8 hours to allow them to fully react, and then sent to the s...

Embodiment 2

[0035]The raw material components of the high-strength phosphogypsum building blocks are: 40 parts of phosphogypsum, 6.8 parts of fly ash, 1.2 parts of phosphorus slag, 5.2 parts of calcium oxide, and 5.6 parts of water. The process for preparing building blocks from the above raw materials is as follows: first mix fly ash, phosphorus slag and calcium oxide in a dry state, and then put them into the stirring device together with phosphogypsum, and add half of the amount of The water is stirred and mixed, and after the materials are evenly mixed, they are sent to the aging bin for digestion reaction, and the subsequent technological process is the same as that of Example 1. In this embodiment, the process conditions of each process are: the time of digestion reaction is about 10 hours, the compression strength of compression molding is about 50MPa, the block is left to stand for about 6 hours after compression molding, and the pressure of the steam curing room is about 5MPa. Pr...

Embodiment 3

[0037] The raw material components of high-strength phosphogypsum building blocks are: 23 parts of phosphogypsum, 4.5 parts of fly ash, 1.2 parts of titanium slag, 3 parts of sand, 4.2 parts of cement, 0.5 parts of 5% polyacrylamide resin solution, calcium oxide 4.2 parts, 1 part of sodium chloride and 5 parts of water. The process of preparing building blocks from the above raw materials is as follows: put phosphogypsum, fly ash, titanium slag, calcium oxide and sodium chloride into the stirring device together, add half of the amount of water for stirring, and mix well , sent to the aging bin for digestion and reaction, and reacted for about 12 hours, and the material reacted and matured. The cured material is mixed with cement and polyacrylamide resin solution first, and then the remaining water is added for stirring and mixing, and then sent to the pressing molding process after mixing evenly. The subsequent technological process is identical with embodiment 1. In the pr...

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Abstract

The prsent invention relates to a high-strength phosphogypsum building block and its preparation method. The raw material component of said block mainly is waste material phosphogypsum produced in the course of production of phosphate fertilizer, and other raw material components includes non-activated compound agent, activated compound agent, accelerator and water. Its preparation method includes the following steps: primary mixing of raw materials, digestion reaction, mainly mixing, press-forming, steam-curing and standing for seasoning. Said block is high in compressino strength, low in unit weight and low in production cost.

Description

1. Technical field [0001] The invention relates to the technical field of building bricks or other building blocks for building walls, in particular to the technical field of building blocks using waste phosphogypsum in phosphate fertilizer production as the main raw material. 2. Background technology [0002] With the development of the national economy and the improvement of people's economic income level, people's requirements for improving housing conditions are also raised, which provides an opportunity for the development of the real estate construction industry and promotes the development of the real estate industry. Real estate construction requires a large number of building blocks, including standard bricks and other forms of blocks, as the basic material for building buildings. Traditional building blocks are mainly made of clay. The mass production of building blocks will lose a lot of arable land, resulting in a reduction in the area of ​​arable land that peop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B28B11/24C04B18/04E04C1/00
CPCY02W30/91
Inventor 刘代俊钟本和刘王昆王雪梅
Owner SICHUAN UNIV
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