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A kind of phosphogypsum ceramsite for landscaping and preparation method thereof

A landscaping and phosphogypsum technology, which is applied in the field of phosphogypsum ceramsite for landscaping and its preparation, can solve the problems of difficult effective treatment of phosphogypsum, low comprehensive utilization rate, and large stockpiles, and achieve enhanced water retention and moisturizing properties. Improve air permeability and improve environmental quality

Inactive Publication Date: 2020-06-26
GUIZHOU KAILIN PHOSPHOGYPSUM INTEGRATION UTILIZATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Phosphogypsum belongs to the solid waste of the phosphorus chemical industry. It is powdery, has poor plasticity, and has a large stockpile and low comprehensive utilization rate. Ideas that need to be solved urgently
In the prior art, in the preparation process of ceramsite, most phosphogypsum is added as a small amount of additive, instead of using phosphogypsum as the main raw material for the production of ceramsite, which makes it difficult to effectively process phosphogypsum in large quantities

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing phosphogypsum ceramsite for landscaping, comprising the following steps:

[0025] (1) mixing phosphogypsum and diatomaceous earth according to a mass ratio of 1:0.01, grinding, and passing through a 100-mesh sieve to obtain phosphogypsum powder;

[0026] (2) Mix medical stone and zeolite at a mass ratio of 1:1, grind them into powder to obtain medical stone powder; add water to prepare a slurry, and place it at 80°C for 10 minutes, add the mass of medical stone powder 3 times of fly ash, mix well, grind, pass through 100 mesh sieve, get fly ash powder;

[0027] (3) Grinding potassium-containing shale and passing through a 130-mesh sieve to obtain shale powder;

[0028] (4) Mix phosphogypsum powder, fly ash powder, and shale powder according to the mass ratio of 20:1:4, mix well, add water, adjust the water-material mass ratio to 0.1, and send it to the granulator, granulate, steam Conservation for 2 days, that is.

[0029] The granulation is to...

Embodiment 2

[0032] A method for preparing phosphogypsum ceramsite for landscaping, comprising the following steps:

[0033] (1) mixing phosphogypsum and diatomaceous earth according to a mass ratio of 1:0.05, grinding, and passing through a 100-mesh sieve to obtain phosphogypsum powder;

[0034] (2) After mixing medical stone and zeolite according to the mass ratio of 1:1, grind them into powder to obtain medical stone powder; add water to prepare a slurry, and place it at 100°C for 20 minutes, add the mass of medical stone powder 5 times of fly ash, mix well, grind, pass through 100 mesh sieve, get fly ash powder;

[0035] (3) Grinding potassium-containing shale and passing through a 130-mesh sieve to obtain shale powder;

[0036] (4) Mix phosphogypsum powder, fly ash powder, and shale powder according to the mass ratio of 20:3:7, mix well, add water, adjust the water-material mass ratio to 0.9, and send it to the granulator, granulate, steam After curing for 4 days, it is ready.

[0...

Embodiment 3

[0040] A method for preparing phosphogypsum ceramsite for landscaping, comprising the following steps:

[0041] (1) mixing phosphogypsum and diatomaceous earth according to a mass ratio of 1:0.03, grinding, and passing through a 100-mesh sieve to obtain phosphogypsum powder;

[0042] (2) Mix medical stone and zeolite at a mass ratio of 1:1, grind them into powder to obtain medical stone powder; add water to prepare a slurry, and place it at 90°C for 15 minutes, add the mass of medical stone powder 4 times of fly ash, mix well, grind, pass through a 100 mesh sieve to obtain fly ash powder;

[0043] (3) Grinding potassium-containing shale and passing through a 130-mesh sieve to obtain shale powder;

[0044] (4) Mix phosphogypsum powder, fly ash powder, and shale powder according to the mass ratio of 20:2:5, mix well, add water, adjust the water-material mass ratio to 0.7, and send it to the granulator, granulate, steam Let it cure for at least 2 days.

[0045] The granulation...

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Abstract

The invention relates to the technical field of ceramsite for landscaping, in particular to ardealite ceramsite for landscaping and a preparation method of the ardealite ceramsite. Ardealite is used as a main raw material; by use of the water absorption property of the ardealite and the water permeability and the gas retention property of ceramsite pores, a large amount of water vapor generated bythe earth surface can be in the ceramsite pores; furthermore, by combination with ardealite treatment by kieselguhr, adding of shale powder and coal powder treatment by medical stones and zeolite, the ardealite ceramsite can be maintained after being subjected to mixing granulation; the ardealite ceramsite is relatively high in bonding strength; the cylinder compressive strength of the ceramsiteis substantially improved; therefore, the water and moisture retention performance is improved, and the air permeability of a landscaping forest is improved, ponding in rainy days is avoided, and thequality of a landscaping environment is improved.

Description

technical field [0001] The invention relates to the technical field of ceramsite for landscaping, in particular to phosphogypsum ceramsite for landscaping and a preparation method thereof. Background technique [0002] Ceramsite is ceramic particles, most of which are round or oval spheres in appearance, and a small amount of irregularly shaped particles like gravel; its surface has a hard shell, which is pottery or Enamel, endows ceramsite with higher strength; moreover, ceramsite has more pores and has sufficient air permeability, and the pores have better adsorption performance, which can absorb more water vapor, making the water retention and moisturizing performance stronger . For this reason, some researchers use ceramsite in soilless cultivation, landscaping and other fields, such as the preparation method of copper tailings ceramsite for landscaping with patent application number 201610123204.3, which preprocesses copper tailings by calcining, acid waste liquid imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C05G3/00C05G3/80C05G5/12A01G31/00A01G24/10A01G24/13A01G24/12
Inventor 杨永彬杨步雷向前勇李泽钢宋维相项军邹国军罗进峰
Owner GUIZHOU KAILIN PHOSPHOGYPSUM INTEGRATION UTILIZATION
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