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Modified phosphogypsum material used for sea reclamation

A technology of land reclamation and phosphogypsum, which is applied in the field of modified phosphogypsum materials, can solve the problems of lack of modified phosphogypsum, achieve the effects of improving water resistance, high filling strength, and reducing environmental damage

Inactive Publication Date: 2014-04-09
GUIZHOU KAILIN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a modified phosphogypsum material for land reclamation, which solves the problem in the prior art that there is no modified phosphogypsum suitable for land reclamation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Take 60% of phosphogypsum, 20% of fly ash and 20% of cement according to the mass percentage, send them into the mixer and stir evenly, then add water and continue to stir evenly; obtain the modified phosphogypsum material for land reclamation. The 14-day compressive strength of the material reached 2.3MPa. The fly ash is above grade 3 fly ash produced in the production process of thermal power plants or heating boilers. The phosphogypsum is the phosphogypsum stockpiled in the production process of wet-process phosphoric acid.

Embodiment 2

[0047] Take 80% of phosphogypsum, 10% of fly ash and 10% of cement according to mass percentage, send them into a mixer and stir evenly, then add water and continue stirring evenly; obtain the modified phosphogypsum material for land reclamation. The 14-day compressive strength of the material reached 1.9MPa. The fly ash is above grade 3 fly ash produced in the production process of thermal power plants or heating boilers.

Embodiment 3

[0049] Take phosphogypsum and 70% and 30% of fly ash according to mass percentage, send them into a mixer and stir evenly, then add water and continue stirring evenly; obtain the modified phosphogypsum material for land reclamation. The 14-day compressive strength of the material reached 0.9MPa. The fly ash is above grade 3 fly ash produced in the production process of thermal power plants or heating boilers.

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Abstract

The invention discloses a modified phosphogypsum material used for sea reclamation. The phosphogypsum is modified by raw material selection and proportioning so as to be suitable for sea reclamation. The materials comprise phosphogypsum and fly ash and / or cement, and the fly ash is above the third level and is generated during production of thermal power plants or heating boilers. With fill strength, good water resistance and high compressive strength, the modified phosphogypsum material not only can meet the compressive strength requirements of road building, wharf construction and the like, but also can make heavy use of phosphogypsum, fly ash and other solid waste, thus solving the constraint bottleneck problem of waste residue utilization during sustainable development of the phosphorus chemical industry. The modified phosphogypsum material provided by the invention is suitable for sea reclamation.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a modified phosphogypsum material used for land reclamation. Background technique [0002] In recent years, the port construction of coastal cities has advanced by leaps and bounds, and coastlines and land resources have become more and more precious, and land reclamation projects have developed rapidly accordingly. Land reclamation refers to the transformation of the original sea area, lake area or river bank into land. Land reclamation can increase the land for urban construction and industrial production, beautify the coastline, improve the coastal landscape, and even expand the area of ​​cultivated land to increase food production. According to the different materials used for land reclamation, the land reclamation mode can be divided into mountain reclamation, garbage reclamation, sea sand reclamation, etc. However, there are some deficiencies in the current land reclamat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B11/26C04B11/30E02B3/18
Inventor 邓竹林杨步雷杨永彬向前勇刘敏李泽钢王伟徐韦洪刘小成邹国军
Owner GUIZHOU KAILIN GRP CO LTD
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