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Method for measuring silicon dioxide amount

A silicon dioxide and sodium hydroxide technology, which is applied in the measurement of color/spectral characteristics, etc., can solve problems such as the vaporization of silicon dioxide and sodium hydroxide, the rapid temperature change of silicon dioxide and sodium hydroxide, and the influence of measurement results. Achieve the effect of accurate measurement value, safe and convenient use, and avoid influence

Inactive Publication Date: 2019-01-01
HUNAN SHIZHUYUAN NON FERROUS METAL
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  • Abstract
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Problems solved by technology

[0002] Silica is widely present in nature and forms rocks together with other minerals. Natural silica is called silica, which accounts for about 12% of the mass of the earth's crust. It exists in two forms: crystalline and amorphous. Quartz crystal is crystalline Silica has different crystal forms and colors. The colorless and transparent crystals in quartz are commonly called crystals, and those with colored bands or layers are called agate. In the determination of silica, most The method is to use the absorbance of silicon dioxide to measure the content of silicon dioxide, but the existing measurement of silicon dioxide, when in use, directly melts silicon dioxide and sodium hydroxide at high temperature, resulting in the formation of silicon dioxide and hydrogen The temperature of sodium oxide changes rapidly, so that silicon dioxide and sodium hydroxide will be partially vaporized, which will affect the measurement results. Therefore, people urgently need a method for determining the amount of silicon dioxide to solve the above problems

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  • Method for measuring silicon dioxide amount
  • Method for measuring silicon dioxide amount

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Embodiment 1

[0031] Embodiment 1: as figure 1 As shown, the present invention provides a kind of technical scheme, a kind of method for measuring silicon dioxide amount, comprises the steps:

[0032] S1. Weighing: Weigh the sample, place it in a silver crucible, cover it with sodium hydroxide, and add sodium peroxide;

[0033] S2, heating: put the silver crucible into the muffle furnace for melting, after melting, take it out and cool it;

[0034] S3, mixing: immerse the molten sample in an aqueous solution filled with absolute ethanol and ferric chloride;

[0035] S4, stirring: wash out the silver crucible, stir the solution evenly, and filter the solution with slow quantitative filter paper to obtain clear liquid;

[0036] S5, liquid preparation: use the rubber dropper to absorb the clear liquid, put it in the colorimetric tube, add hydrochloric acid, deionized water and molybdenum acid in sequence and mix evenly;

[0037] S6. Pre-test: Move part of the solution to a cuvette, compare ...

Embodiment 2

[0053] Embodiment 2: as figure 1 Shown, a kind of method for measuring silicon dioxide amount comprises the steps:

[0054] S1. Weighing: Weigh the sample, place it in a silver crucible, cover it with sodium hydroxide, and add sodium peroxide;

[0055] S2, heating: put the silver crucible into the muffle furnace for melting, after melting, take it out and cool it;

[0056] S3, mixing: immerse the molten sample in an aqueous solution filled with absolute ethanol and ferric chloride;

[0057] S4, stirring: wash out the silver crucible, stir the solution evenly, and filter the solution with slow quantitative filter paper to obtain clear liquid;

[0058] S5, liquid preparation: use the rubber dropper to absorb the clear liquid, put it in the colorimetric tube, add hydrochloric acid, deionized water and molybdenum acid in sequence and mix evenly;

[0059] S6. Pre-test: Move part of the solution to a cuvette, compare it with the blank solution made with the same sample, and measu...

Embodiment 3

[0075] Embodiment 3: as figure 1 Shown, a kind of method for measuring silicon dioxide amount comprises the steps:

[0076] S1. Weighing: Weigh the sample, place it in a silver crucible, cover it with sodium hydroxide, and add sodium peroxide;

[0077] S2, heating: put the silver crucible into the muffle furnace for melting, after melting, take it out and cool it;

[0078] S3, mixing: immerse the molten sample in an aqueous solution filled with absolute ethanol and ferric chloride;

[0079] S4, stirring: wash out the silver crucible, stir the solution evenly, and filter the solution with slow quantitative filter paper to obtain clear liquid;

[0080] S5, liquid preparation: use the rubber dropper to absorb the clear liquid, put it in the colorimetric tube, add hydrochloric acid, deionized water and molybdenum acid in sequence and mix evenly;

[0081] S6. Pre-test: Move part of the solution to a cuvette, compare it with the blank solution made with the same sample, and measu...

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Abstract

The invention discloses a method for measuring silicon dioxide amount. The method comprises the following steps: weighing, heating, mixing, stirring, liquid preparation, trial test, contrast test, curve plotting and analysis result calculation. The method disclosed by the invention is scientific and reasonable and safe and convenient to use; through high-temperature heating and melting of the silicon dioxide and by adopting sodium hydroxide and hydrogen peroxide solutions, the silicon dioxide is totally dissolved and converted into soluble silicic acid, then the measured value of the silicon dioxide is more accurate, and relatively great error is avoided; preheating at the furnace opening of a muffle furnace can effectively prevent sharp change of temperature in heating and vaporization of sodium hydroxide and silicon dioxide in the melting as well as difference in the final measured value and influence on the measurement result; during the measurement, a plastic container is adoptedfor the measurement, thus influence on the content of silicon dioxide can be effectively avoided, and the pollution caused by the silicon dioxide is eliminated.

Description

technical field [0001] The invention relates to the technical field of measuring the amount of silicon dioxide, in particular to a method for measuring the amount of silicon dioxide. Background technique [0002] Silica is widely present in nature and forms rocks together with other minerals. Natural silica is called silica, which accounts for about 12% of the mass of the earth's crust. It exists in two forms: crystalline and amorphous. Quartz crystal is crystalline Silica has different crystal forms and colors. The colorless and transparent crystals in quartz are commonly called crystals, and those with colored bands or layers are called agate. In the determination of silica, most The method is to use the absorbance of silicon dioxide to measure the content of silicon dioxide, but the existing measurement of silicon dioxide, when in use, directly melts silicon dioxide and sodium hydroxide at high temperature, resulting in the formation of silicon dioxide and hydrogen The t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 姚丽娜刘杰温智敏
Owner HUNAN SHIZHUYUAN NON FERROUS METAL
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