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Phosphogypsum-based self-leveling material preparation method

A gypsum-based, self-leveling technology, applied in the field of energy conservation and environmental protection, can solve the problems of surrounding environmental pollution, occupying land, endangering the ecological environment, etc., and achieve the effects of good waterproof performance, environmental protection, and high strength

Active Publication Date: 2019-05-07
福建省绿树节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of them are stored and disposed of. The accumulation of a large amount of phosphogypsum not only occupies land, but also wastes resources. The acid and other harmful substances contained in it will easily pollute the surrounding environment and endanger the ecological environment. It is imminent to solve the problem of phosphogypsum accumulation.
[0004] In recent years, with the rapid increase in the number of private cars, waste tires have been continuously produced. At present, there are hundreds of millions of waste tires produced in my country. If so many waste rubbers are not utilized, they will also occupy land resources. environmental hazards

Method used

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  • Phosphogypsum-based self-leveling material preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A phosphogypsum-based self-leveling material, which is composed of the following substances in weight percentage: 40% modified phosphogypsum, 10% cement, 3% modified rubber powder, 0.5% fiber, 3% redispersible latex powder, water retention 0.3% stabilizer, 0.1% water reducer, 0.1% wetting and leveling agent, 0.001% defoamer, and the rest is hard material;

[0039] The preparation method of the modified phosphogypsum is as follows: uniformly mix the original phosphogypsum with a modifying agent accounting for 4% of the total weight of the phosphogypsum, then age for 24 hours, then thermally activate it at 140° C. for 4 hours, and then lower it to a constant temperature. Grinding in a planetary mill for 2 minutes;

[0040] The modifying agent is composed of unslaked lime and crystal conversion agent according to the weight ratio of 10:1;

[0041] The crystal form conversion agent is sodium polyphosphate;

[0042] Described cement is P·O42.5 cement;

[0043] The modifie...

Embodiment 2

[0052] A phosphogypsum-based self-leveling material, which is composed of the following substances in weight percentage: 50% modified phosphogypsum, 15% cement, 5% modified rubber powder, 2% fiber, 6% redispersible latex powder, water retention 0.8% stabilizer, 0.4% water reducer, 0.5% wetting and leveling agent, 0.005% defoamer, and the rest is hard material;

[0053] The preparation method of the modified phosphogypsum is: mixing the original phosphogypsum with a modifier accounting for 6% of the total weight of the phosphogypsum, aging for 28 hours, then thermally activating at 140°C for 4 hours, and then cooling down to a constant temperature Grinding in a planetary mill for 2 minutes;

[0054] Described modifying agent is made up of unslaked lime and crystal transformation agent according to weight ratio 20:1;

[0055] The crystal form conversion agent is composed of sodium ethylenediamine tetramethylene phosphate and diethanolamine according to a weight ratio of 1:1;

...

Embodiment 3

[0066] A phosphogypsum-based self-leveling material, which is composed of the following substances in weight percentage: 45% modified phosphogypsum, 12% cement, 4% modified rubber powder, 1% fiber, 4% redispersible latex powder, water retention 0.5% stabilizer, 0.3% water reducer, 0.4% wetting and leveling agent, 0.003% defoamer, and the rest is hard material;

[0067] The preparation method of the modified phosphogypsum is: mixing the original phosphogypsum with a modifier accounting for 5% of the total weight of the phosphogypsum, aging for 25 hours, then thermally activating at 140°C for 4 hours, and then cooling down to a constant temperature Grinding in a planetary mill for 2 minutes;

[0068] Described modifying agent is made up of unslaked lime and crystal conversion agent according to weight ratio 15:1;

[0069] The crystal form conversion agent is composed of octadecanoic acid, itaconic acid and sodium nitrilotriacetate in a weight ratio of 1:1:1;

[0070] Described...

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Abstract

The invention belongs to the technical field of energy conservation and environmental protection, and particularly relates to a phosphogypsum-based self-leveling material preparation method, wherein the phosphogypsum-based self-leveling material is prepared from the following materials by weight: 40-50% of modified phosphogypsum, 10-15% of PO42.5 cement, 3-5% of modified rubber powder, 0.5-2% of fiber, 3-6% of redispersible latex powder, 0.3-0.8% of a water retention stabilizer, 0.1-0.4% of a powdery polycarboxylic acid water reducing agent, 0.1-0.5% of a wetting leveling agent, 0.001-0.005% of an anti-foaming agent, and the balance of steel residue or quartz sand. According to the present invention, the prepared phosphogypsum-based self-leveling material has characteristics of high strength, good waterproof performance and the like; and phosphogypsum, waste rubber and other waste are completely utilized so as to easily achieve environmental protection.

Description

technical field [0001] This invention is a divisional application of the Chinese patent "a phosphogypsum-based self-leveling material". The application date is April 9, 2017, and the application number is 201710226715.2. The invention belongs to the technical field of energy saving and environmental protection, and in particular relates to a phosphogypsum-based self-leveling material and a preparation method thereof. Background technique [0002] The ground is an important part of construction engineering. Self-leveling technology is a ground construction technology. The floor material in a liquid state flows automatically after it is scattered on the ground, and it is filled after the ground flows to a low-lying area, and finally the entire piece After the ground flows flat, it stops and condenses and solidifies. Compared with the artificial ground leveling process, the self-leveling leveling process saves a lot of labor. With the continuous increase of labor costs, self-l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/27
CPCC04B28/143C04B2111/00017C04B2111/27C04B2201/50C04B7/02C04B18/22C04B2103/0057C04B2103/465C04B2103/302C04B2103/50C04B24/42C04B16/0691C04B18/142C04B14/06C04B14/4643
Inventor 朱社凤邓颖陈艺芳
Owner 福建省绿树节能科技有限公司