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Method for detecting component content of aluminum hydroxide product

A technology of aluminum hydroxide and detection method, applied in the field of chemical analysis, can solve the problem of low content detection accuracy, and achieve the effects of short analysis period, low melting temperature and simple operation

Active Publication Date: 2022-05-10
QINGYUAN CSG NEW ENERGY SAVING MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Based on this, it is necessary to solve the problem that traditional detection methods cannot directly detect Al in molten samples of aluminum hydroxide products. 2 o 3 Content and detection accuracy are not high, providing a method that can directly measure Al in molten samples 2 o 3 Method for detecting component content of aluminum hydroxide products with high content and high detection accuracy

Method used

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  • Method for detecting component content of aluminum hydroxide product
  • Method for detecting component content of aluminum hydroxide product
  • Method for detecting component content of aluminum hydroxide product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Step 1: Take five different standard samples of aluminum hydroxide products and dry them at 110°C for later use. The list of standard samples is shown in Table 2:

[0096] Table 2 List of five different aluminum hydroxide product standard samples

[0097]

[0098] Step 2: Weigh 7±0.0005g of the composite flux formed by mixing anhydrous lithium tetraborate and lithium metaborate into a platinum crucible. The mass proportions of anhydrous lithium tetraborate and lithium metaborate are 67% and 33% respectively; add 0.7±0.0003g of aluminum hydroxide product (mass ratio of aluminum hydroxide product to composite flux is 1:10), mix well, and add 50μL of lithium bromide with a concentration of 300g / L.

[0099] Step 3: Place the above-mentioned platinum crucible and injection mold in the corresponding position of the high-frequency melting machine for melting and making tablets. The melting parameters are shown in Table 3:

[0100] The fusion sample parameter of table 3 emb...

Embodiment 2

[0113] Step 1: Take the five aluminum hydroxide product standard samples in Example 1 and dry them at 110°C for later use.

[0114] Step 2: Weigh 4.4±0.0003g of anhydrous lithium tetraborate and lithium metaborate and mix them to form a composite flux in a platinum crucible. The mass proportions of anhydrous lithium tetraborate and lithium metaborate are 67% and 33% respectively; add 2.2 Add ±0.0002g boric acid, then add 2.2±0.0003g aluminum hydroxide product, mix well, add 210μL lithium bromide with a concentration of 300g / L.

[0115] Step 3: Place the above-mentioned platinum crucible and injection mold in the corresponding position of the high-frequency melting machine for melting and making tablets. The melting parameters are shown in Table 6:

[0116] The melting parameter of table 6 embodiment 2

[0117]

[0118] Step 4: After melting the five standard samples listed in step 1 according to the melting conditions in steps 2 to 3, use an X-ray fluorescence spectrometer...

Embodiment 2

[0124] Table 8 Example 2 method precision verification

[0125]

[0126] From the above data, it can be seen that the detection method of the component content of the aluminum hydroxide product of this embodiment has high accuracy, and its absolute error is within 0.2%, and it can directly measure the Al content in the molten sample of the product.2 o 3 content. The precision of other impurity content is substantially better than the method in Example 1.

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Abstract

The invention provides a method for detecting the component content of an aluminum hydroxide product. The method comprises the following steps: mixing a to-be-detected aluminum hydroxide product with a specific type of composite fluxing agent with the mass 10-12 times that of the to-be-detected aluminum hydroxide product; or mixing the aluminum hydroxide product to be detected, the composite fluxing agent and boric acid according to the mass ratio of 1: (1.8-2.3): (0.7-1.2), and adding the release agent to obtain a mixture; melting and flaking the mixture to obtain a molten sample; detecting the components of the molten sample by adopting X-ray fluorescence analysis to obtain the fluorescence intensity of each component in the aluminum hydroxide product to be detected; and comparing the fluorescence intensity of each component in the to-be-detected aluminum hydroxide product with the standard relationship between the fluorescence intensity and the content of each component of the aluminum hydroxide product standard sample to obtain the component content of the to-be-detected aluminum hydroxide product. The detection method can be used for directly determining the content of Al2O3 in the molten sample, and is simple to operate, short in analysis period, less in chemical pollution, high in accuracy and small in damage to equipment.

Description

technical field [0001] The invention relates to the technical field of chemical analysis, in particular to a method for detecting the component content of an aluminum hydroxide product. Background technique [0002] Aluminum hydroxide is a very important inorganic material, the largest and most widely used inorganic flame retardant additive, and its usage is still increasing year by year. In addition, the scope of use of aluminum hydroxide involves thermosetting plastics, thermoplastics, synthetic rubber, coatings, electrolytic aluminum industry and building materials and other industries. Due to the limitations of the preparation process, the aluminum hydroxide products prepared by the current industrial methods contain more or less impurities such as Si, Fe, and Na. Therefore, it is of great significance to detect the content of ingredients in aluminum hydroxide products. [0003] At present, the detection methods of various components in aluminum hydroxide products are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/223G01N23/2202
CPCG01N23/223G01N23/2202G01N2223/076Y02E60/10
Inventor 郭学谦常海新郭彤张红叶黄军朱俊勇陈自发刘红刚
Owner QINGYUAN CSG NEW ENERGY SAVING MATERIALS CO LTD