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Morphological analysis method for organic matters in sodium aluminate solution

A morphological analysis, sodium aluminate technology, applied in the direction of analysis of materials, material separation, instruments, etc., can solve the problems of strong alkali corrosion resistance, incomplete test results, complex structure of sodium aluminate solution, etc., and achieve long service life of equipment , The detection effect is better, the effect of reducing the effect of corrosion

Active Publication Date: 2017-05-24
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The structure of sodium aluminate solution is complex, the form of organic matter is constantly changing in it, and the solution is strongly alkaline, most testing instruments are not resistant to strong alkali corrosion, and the test results are not complete

Method used

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  • Morphological analysis method for organic matters in sodium aluminate solution
  • Morphological analysis method for organic matters in sodium aluminate solution
  • Morphological analysis method for organic matters in sodium aluminate solution

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Embodiment 1: a kind of speciation analysis method of organic matter in sodium aluminate solution, comprises the steps:

[0061] A. Reagent preparation:

[0062] (1) Extractant: Mix 500mL of n-butanol with 500mL of water, shake for 10min, and after standing overnight, take the upper layer saturated with n-butanol to obtain the extractant;

[0063] (2) Concentrated hydrochloric acid: get commercially available mass fraction and be the excellent grade pure HCl of 37%;

[0064] (3) Hydrochloric acid (1+1): Dilute 500 mL of commercially available concentrated hydrochloric acid with a mass fraction of 37% to 1 L;

[0065] B. Sample pretreatment:

[0066] (1) Solution extraction: Take sodium aluminate solution and put it in separatory funnel A, add water to dilute, then add concentrated hydrochloric acid while shaking until a large amount of white precipitate precipitates, then add hydrochloric acid (1+1) while shaking until The precipitate in the solution is completely di...

Embodiment 2

[0070] Embodiment 2: a kind of speciation analysis method of organic matter in sodium aluminate solution, comprises the steps:

[0071] A. Reagent preparation:

[0072] (1) Extractant: Mix 500mL of n-butanol with 500mL of water, shake for 10min, and after standing overnight, take the upper layer saturated with n-butanol to obtain the extractant;

[0073] (2) Concentrated hydrochloric acid: get commercially available mass fraction and be the excellent grade pure HCl of 37%;

[0074] (3) Hydrochloric acid (1+1): Dilute 500 mL of commercially available concentrated hydrochloric acid with a mass fraction of 37% to 1 L;

[0075] B. Sample pretreatment:

[0076] (1) Solution extraction: Take sodium aluminate solution and put it in separatory funnel A, add water to dilute, then add concentrated hydrochloric acid while shaking until a large amount of white precipitate precipitates, then add hydrochloric acid (1+1) while shaking until The precipitate in the solution is completely di...

Embodiment 3

[0080] Embodiment 3: a kind of speciation analysis method of organic matter in sodium aluminate solution, comprises the steps:

[0081] A. Reagent preparation:

[0082] (1) Extractant: Mix 500mL of n-butanol with 500mL of water, shake for 10min, and after standing overnight, take the upper layer saturated with n-butanol to obtain the extractant;

[0083] (2) Concentrated hydrochloric acid: get commercially available mass fraction and be the excellent grade pure HCl of 37%;

[0084] (3) Hydrochloric acid (1+1): Dilute 500 mL of commercially available concentrated hydrochloric acid with a mass fraction of 37% to 1 L;

[0085] B. Sample pretreatment:

[0086] (1) Solution extraction: Take sodium aluminate solution and put it in separatory funnel A, add water to dilute, then add concentrated hydrochloric acid while shaking until a large amount of white precipitate precipitates, then add hydrochloric acid (1+1) while shaking until The precipitate in the solution is completely di...

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Abstract

The invention discloses a morphological analysis method for organic matters in a sodium aluminate solution. The morphological analysis method comprises the following steps: (1) extracting a solution; (2) esterifying an extracting solution; (3) dehydrating an esterified solution; (4) carrying out GC / MS (Gas Chromatograph-Mass Spectrometer) analysis. According to the morphological analysis method disclosed by the invention, the sodium aluminate solution is subjected to extraction, esterifying and dehydration pre-treatment, and the structure of a detected sample is more single; morphology of the organic matters in the detected sample is more stable and a detection result is better; meanwhile, the corrosion is smaller and a corrosion effect on equipment is weaker, so that the service life of the equipment is longer; meanwhile, a suitable HCL concentration regulator is selected and esterifying conditions are optimized, so that an organic phase in the sodium aluminate solution can be more completely separated out and a detection result is better.

Description

technical field [0001] The invention relates to a method for analyzing organic matter in sodium aluminate solution, in particular to a method for analyzing the form of organic matter in sodium aluminate solution. Background technique [0002] The alumina production methods used in industry mainly include the Bayer method, sintering method, and Bayer sintering combined method. Since my country's bauxite resources are mainly high-alumina, high-silicon, and low-iron diaspore, the alumina in my country is mainly Production is mainly Bayer sintering joint method. The combined method has a high dissolution temperature, low diaspore organic matter content, and a large proportion of the sintering method in the process. The organic matter in the production process can basically be removed directly, so the accumulation of organic matter in the process is not prominent. [0003] The production of alumina by the Bayer method has the advantages of short process, low energy consumption, l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/06
CPCG01N30/06G01N2030/062
Inventor 金会心李军旗毛小浩吴复忠陈朝轶徐本军
Owner GUIZHOU UNIV
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