Modified phosphogypsum material used for sea reclamation

A technology for land reclamation and phosphogypsum, which is applied in the field of modified phosphogypsum materials for land reclamation, can solve problems such as lack of modified phosphogypsum, and 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

[0004] 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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  • Modified phosphogypsum material used for sea reclamation

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Comparison scheme
Effect test

Embodiment 1

[0045] According to the mass percentage, 80% of phosphogypsum and 20% of composite yellow phosphorus slag gelatinized powder are taken and sent to a mixer, and after being stirred evenly, water is added to continue stirring evenly; the modified phosphogypsum material for land reclamation is obtained. The composite yellow phosphorus slag gelatinized powder is a mixture composed of water-quenched yellow phosphorus slag and cement clinker materials produced in the yellow phosphorus production process.

[0046] The 14-day compressive strength of the material reached 2.9MPa.

Embodiment 2

[0048] According to the mass percentage, 85% of phosphogypsum and 15% of composite yellow phosphorus slag gelatinized powder are taken out and sent to a mixer for uniform mixing, and then water is added to continue stirring evenly; the modified phosphogypsum material for land reclamation is obtained. The composite yellow phosphorus slag gelatinized powder is a mixture composed of water-quenched yellow phosphorus slag and cement clinker materials produced in the yellow phosphorus production process.

[0049] The 14-day compressive strength of the material reached 2.3MPa.

Embodiment 3

[0051] 90% of the phosphogypsum and 10% of the composite yellow phosphorus slag gelatinized powder are collected according to the mass percentage and sent to a mixer for uniform mixing, then adding water and continuing to stir evenly; the modified phosphogypsum material for land reclamation is obtained. The composite yellow phosphorus slag gelatinized powder is a mixture composed of water-quenched yellow phosphorus slag and cement clinker materials produced in the yellow phosphorus production process. The phosphogypsum is the phosphogypsum stockpiled in the production process of wet-process phosphoric acid.

[0052] The 14-day compressive strength of the material reached 1.1 MPa.

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Abstract

The invention discloses a modified phosphogypsum material used for sea reclamation. Phosphogypsum is modified by raw material selection and proportioning so as to make the phosphogypsum suitable for sea reclamation. The materials comprise phosphogypsum and composite yellow phosphorus slag gelling powder. The composite yellow phosphorus slag gelling powder is mixed powder composed of crushed water-quenched yellow phosphorus slag generated in a yellow phosphorus production process and cement clinker. With the characteristics of high fill strength, fast curing speed, good water resistance and high compressive strength, the modified phosphogypsum material used for sea reclamation provided by the invention not only can meet the compressive strength requirements of road building, wharf construction and the like, but also can make heavy use of the solid waste in the phosphorus chemical industry, thus solving the constraint bottleneck problem of waste residue utilization during sustainable development of the phosphorus chemical industry. And the modified phosphogypsum material suitable for sea reclamation is provided.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a modified phosphogypsum material for land reclamation. Background technique [0002] Land reclamation refers to the transformation of the original sea area, lake area or river bank into land. For coastal cities with many mountains and little flat land, land reclamation is a very effective way to create flat land for urban development. 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 reclamation technology. For example, the compressive strength of land reclamation materials is ...

Claims

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Application Information

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