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Phosphogypsum-substrate imitation-copper decorative plate and preparation method thereof

A technology for decorative boards and phosphogypsum, which is applied to manufacturing tools, ceramic molding machines, etc., can solve the problems affecting the appearance and shape of products, small application range of phosphogypsum, and economic burden of environmental pollution, etc., and achieves improvement in effect and quality. The effect of improved performance, improved quality and strength

Inactive Publication Date: 2015-06-24
GUIZHOU KAILIN PHOSPHOGYPSUM INTEGRATION UTILIZATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Phosphogypsum is a waste produced in the wet-process phosphoric acid production process. Phosphogypsum is produced and extracted by the wet-process phosphoric acid process. At the same time, when sulfuric acid is added, sulfuric acid and calcium elements are precipitated, which in turn makes the soluble impurities in it The content of sodium and potassium elements in the phosphogypsum product is relatively increased; and through relevant testing and discussion, the content of potassium and sodium elements will have an impact on the products made of phosphogypsum as raw materials, causing crystal flowers to appear on the surface of phosphogypsum products; especially the addition of phosphorus In the technical field where gypsum is used as a raw material to make certain substrates or insulating bricks and hollow blocks, when these products are made of phosphogypsum raw materials with a sodium content higher than 1%, a large number of crystals will occur on the surface of the product. Flowers, that is, pulverization occurs, which leads to poor performance of phosphogypsum products, severe damage to strength, and also affects the appearance and shape of the product
[0003] It is precisely because of this that the technology of imitating a certain product with a product made of phosphogypsum as a base material has not yet achieved a large degree of development and breakthrough in the prior art, which has led to a small application range of phosphogypsum. The consumption of phosphogypsum is only limited to the production of products using phosphogypsum as an additive, but it is difficult to use phosphogypsum itself as the main raw material to produce products, which increases the annual stockpiling of phosphogypsum, further causing serious environmental pollution and serious economic burden

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A phosphogypsum base material imitation copper decorative board, the raw material components of which are 40kg phosphogypsum, 2kg calcium fluorosilicate, 0.1kg cement, 3kg fly ash, 3kg quicklime, and 30kg imitation copper paint.

[0028] The content of soluble impurities in the phosphogypsum is 7%, and its preparation method is to stir and mix the phosphogypsum with clarified lime water at a temperature of 40°C. The stirring speed during stirring and mixing is 60r / min, and it is kept at a constant temperature. Store for 2h, then add calcium fluoride to it. The amount of calcium fluoride added is 0.3 times the amount of phosphogypsum. After mixing the calcium fluoride evenly, add alumina to it. The amount of alumina added is the same as that of fluorine. When adding alumina, increase the stirring speed to 120r / min, continue stirring for 5 minutes, then increase its temperature to 50°C, and let it stand for 10 hours for aging treatment, and then place it in In the filter clo...

Embodiment 2

[0040] A phosphogypsum base material imitation copper decorative board, the raw material components of which are 50kg phosphogypsum, 7kg calcium fluorosilicate, 0.9kg cement, 7kg fly ash, 8kg quicklime, and 50kg imitation copper paint.

[0041] The content of soluble impurities in the phosphogypsum is 1%, and the preparation method is to stir and mix the phosphogypsum with clarified lime water at a temperature of 60°C. The stirring speed during stirring and mixing is 90r / min, and the temperature is kept at a constant temperature. Store for 3 hours, then add calcium fluoride to it. The amount of calcium fluoride added is 0.6 times the amount of phosphogypsum. After mixing the calcium fluoride evenly, add alumina to it. The amount of alumina added is the same as that of fluorine. When adding alumina, increase the stirring speed to 220r / min, continue stirring for 15min, then increase its temperature to 70℃, and let it stand for 12h for aging treatment, and then place it in In the fi...

Embodiment 3

[0053] A phosphogypsum base material imitation copper decorative board, the raw material components of which are phosphogypsum 45kg, calcium fluorosilicate 5kg, cement 0.5kg, fly ash 5kg, quicklime 5kg and imitation copper paint 40kg.

[0054] The content of soluble impurities in the phosphogypsum is 3%, and its preparation method is to stir and mix the phosphogypsum with clarified lime water at a temperature of 50°C. The stirring speed during stirring and mixing is 75r / min, and it is kept at a constant temperature. Store for 2.5h, and then add calcium fluoride to it. The amount of calcium fluoride added is 0.5 times the amount of phosphogypsum. After the calcium fluoride is stirred and mixed uniformly, alumina is added to it. The amount of alumina added is the same The amount of calcium fluoride added, and when adding alumina, increase the stirring speed to 170r / min, continue the stirring treatment for 10 minutes, then raise its temperature to 60°C, and let it stand for 11h for a...

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Abstract

The invention relates to the technical field of chemical building materials, and particularly relates to a phosphogypsum-substrate imitation-copper decorative plate and a preparation method thereof. Through the appropriate proportioning of phosphogypsum, calcium silicofluoride, cement, fly ash, lime, and an imitation-copper paint raw material, the activity of the phosphogypsum is maximally optimized, thereby improving the properties of the phosphogypsum, especially reducing the soluble impurity content of the phosphogypsum, ensuring the coagulability of the phosphogypsum, enhancing the strength of the phosphogypsum, and improving the quality of products; through the appropriate treatment of a phosphogypsum substrate raw material, a phosphogypsum substrate is better in properties and excellent in quality, and the phosphogypsum substrate can be perfectly combined with an imitation-copper paint, so that the effect and quality of imitation copper are improved; and the sodium content of the phosphogypsum is reduced, so that no crystal pattern phenomenon occurs on the surfaces of phosphogypsum products, thereby further ensuring the quality and strength of phosphogypsum substrate products.

Description

Technical field [0001] The invention relates to the technical field of chemical building materials, in particular to a phosphogypsum base material imitation copper decorative board and a preparation method thereof. Background technique [0002] Phosphogypsum is a waste produced in the wet-process phosphoric acid production process. Because phosphoric acid is produced and extracted by the wet-process phosphoric acid process, when sulfuric acid is also added, it causes the precipitation of sulfuric acid and calcium elements, which in turn makes the soluble impurities in it The content of sodium and potassium in the phosphogypsum is relatively higher; and through relevant testing and discussion, the content of potassium and sodium will affect the product of phosphogypsum as a raw material, causing the surface of the phosphogypsum product to produce crystal flowers; especially the phosphorus Gypsum is used as a raw material to make a certain kind of base material or insulation bricks...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B41/70B28B11/24
Inventor 杨永彬向前勇杨步雷王伟刘小成胡新菊李泽钢
Owner GUIZHOU KAILIN PHOSPHOGYPSUM INTEGRATION UTILIZATION
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