Method for improving decomposition rate of decomposed aluminium hydroxide micro powder

A technology of aluminum hydroxide and decomposition rate, which is applied in chemical instruments and methods, preparation of alkali metal aluminate/aluminum oxide/aluminum hydroxide, inorganic chemistry, etc. Low output and other problems, to achieve the effect of improving product value, simple process flow, and high particle size stability

Inactive Publication Date: 2018-09-25
郝亚明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional process leads to a low decomposition rate of the product, which leads

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for increasing the decomposition rate of aluminum hydroxide powder includes the following steps:

[0024] (1) Add aluminum hydroxide to the initial solution and adjust the concentration of aluminum hydroxide;

[0025] (2) Add water to the solution prepared in step (1), and adjust the concentration of aluminum hydroxide;

[0026] (3) Add crystal seeds to the solution prepared in step (2), and then control the temperature to separate crystals;

[0027] (4) Filter to obtain a filter cake, then press to filter, and finally obtain the product.

[0028] The initial solution described in step (1) is sodium aluminate, and the concentration of sodium aluminate in the initial solution is 230 g / L.

[0029] The concentration of aluminum hydroxide in the solution prepared in step (1) is 240 g / L.

[0030] The temperature of the water in step (2) is 60°C

[0031] The concentration of aluminum hydroxide in the solution prepared in step (2) is 120 g / L.

[0032] The crystal seed described in ...

Embodiment 2

[0041] A method for increasing the decomposition rate of decomposing aluminum hydroxide powder includes the following steps:

[0042] (1) Add aluminum hydroxide to the initial solution and adjust the concentration of aluminum hydroxide;

[0043] (2) Add water to the solution prepared in step (1), and adjust the concentration of aluminum hydroxide;

[0044] (3) Add crystal seeds to the solution prepared in step (2), and then control the temperature to separate crystals;

[0045] (4) Filter to obtain a filter cake, then press to filter, and finally obtain the product.

[0046] The initial solution of step (1) is sodium aluminate, and the concentration of sodium aluminate in the initial solution is 240 g / L.

[0047] The concentration of aluminum hydroxide in the solution prepared in step (1) is 260 g / L.

[0048] The lotion in step (2) is water, and the water temperature is 80°C

[0049] The concentration of aluminum hydroxide in the solution prepared in step (2) is 130 g / L.

[0050] The crysta...

Embodiment 3

[0059] A method for increasing the decomposition rate of decomposing aluminum hydroxide powder includes the following steps:

[0060] (1) Add aluminum hydroxide to the initial solution and adjust the concentration of aluminum hydroxide;

[0061] (2) Add water to the solution prepared in step (1), and adjust the concentration of aluminum hydroxide;

[0062] (3) Add crystal seeds to the solution prepared in step (2), and then control the temperature to separate crystals;

[0063] (4) Filter to obtain a filter cake, then press to filter, and finally obtain the product.

[0064] The initial solution described in step (1) is sodium aluminate, and the concentration of sodium aluminate in the initial solution is 235 g / L.

[0065] The concentration of aluminum hydroxide in the solution prepared in step (1) is 249 g / L.

[0066] The temperature of the water in step (2) is 70°C

[0067] The concentration of aluminum hydroxide in the solution prepared in step (2) is 125 g / L.

[0068] The crystal seed d...

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PUM

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Abstract

The invention relates to a method for improving a decomposition rate of decomposed aluminium hydroxide micro powder, and belongs to the field of an inorganic flame retardant material. The method comprises the following steps: (1) adding aluminium hydroxide into initial solution, and regulating the concentration of the aluminium hydroxide; (2) adding water into the solution prepared in the step (1), and regulating the concentration of the aluminium hydroxide; (3) adding crystal seeds into the solution prepared in the step (2), then controlling a temperature and decomposing and separating out crystals; (4) filtering to obtain a filer cake, then carrying out filter pressing, and finally obtaining the product. According to the invention, the decomposition rate of the decomposed aluminium hydroxide micro powder can be effectively improved, the decomposition rate reaches 60 to 63%, and the product value is effectively improved.

Description

Technical field [0001] The invention relates to a method for increasing the decomposition rate of decomposed aluminum hydroxide powder, which belongs to the field of inorganic flame retardant materials. Background technique [0002] At present, the main domestic production processes control the product decomposition rate of 50%-58%, and there are problems such as low productivity and poor product crystal morphology. At present, there are generally two processes, one is to grind the alumina powder seeds through a grinding device, and then add them to the solution to be configured; [0003] The second method is the neutralization method. The aluminum hydroxide powder seeds are obtained by precipitating aluminum hydroxide powder seeds from the aluminum sulfate solution, and then they are added to the required configuration solution; [0004] Traditional craftsmanship leads to a low product decomposition rate, which leads to a relatively low output, which leads to a reduction in the eff...

Claims

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Application Information

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IPC IPC(8): C01F7/14
CPCC01F7/144C01P2004/60C01P2006/19C01P2006/40C01P2006/60
Inventor 郝亚明
Owner 郝亚明
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