A kind of phosphogypsum base material imitation copper decoration plate and preparation method thereof

A decorative plate and phosphogypsum technology, applied in the manufacture of tools, ceramic molding machines, etc., can solve the problems affecting the appearance and shape of products, the increase of phosphogypsum stockpiling, and the economic burden of environmental pollution, so as to improve the effect and quality, internal Structural property improvement, effect of improving quality and strength

Inactive Publication Date: 2017-07-25
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-based imitation copper decorative plate, the raw materials of which are 40kg of phosphogypsum, 2kg of calcium fluorosilicate, 0.1kg of cement, 3kg of fly ash, 3kg of quicklime, and 30kg of imitation copper paint.

[0028] The content of soluble impurities in the phosphogypsum is 7%. Its preparation method is to stir and mix the phosphogypsum with clarified lime water with a temperature of 40°C. Store it for 2 hours, then add calcium fluoride to it, the amount of calcium fluoride added is 0.3 times the amount of phosphogypsum, and stir and mix the calcium fluoride evenly, then 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 5min, then raise the temperature to 50°C, and let it stand for aging treatment for 10h, then place it in In the filter cloth, filter out the impurities to obtain the filtrate slurry, and then remove the water from the filt...

Embodiment 2

[0040] A phosphogypsum-based imitation copper decorative plate, the raw materials of which are 50kg of phosphogypsum, 7kg of calcium fluorosilicate, 0.9kg of cement, 7kg of fly ash, 8kg of quicklime, and 50kg of imitation copper paint.

[0041] The content of soluble impurities in the phosphogypsum is 1%. Its preparation method is to stir and mix the phosphogypsum with clarified lime water with a temperature of 60°C. Store for 3 hours, then add calcium fluoride to it, the amount of calcium fluoride added is 0.6 times the amount of phosphogypsum, and after stirring and 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 raise the temperature to 70°C, and let it stand for aging for 12h, then place it in In the filter cloth, filter out the impurities to obtain the filtrate slurry, and then remove the water from the filtrate...

Embodiment 3

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

[0054] The content of soluble impurities in the phosphogypsum is 3%. Its preparation method is to stir and mix the phosphogypsum with clarified lime water with a temperature of 50°C. The stirring speed during the stirring and mixing is 75r / min. Store it for 2.5 hours, then add calcium fluoride to it, the amount of calcium fluoride added is 0.5 times the amount of phosphogypsum, and after stirring and mixing the calcium fluoride evenly, add alumina to it, the amount of alumina added is the same as The amount of calcium fluoride added, and when adding alumina, increase the stirring speed to 170r / min, continue stirring for 10min, then raise the temperature to 60°C, and let it stand for aging treatment for 11h, then place it In the filter...

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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-based imitation copper decorative plate and a preparation method thereof. Background technique [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 ra...

Claims

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Application Information

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Patent Type & Authority Patents(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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