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A device and method for measuring carbon dioxide content in pyrite

A technology of carbon dioxide and pyrite, which is applied to the analysis of materials and instruments, can solve the problems of measurement result deviation and data deviation, and achieve the effect of small footprint, large measurement range and less time consumption

Active Publication Date: 2017-01-11
BLUESTAR LEHIGH ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the carbon dioxide content is slightly higher, that is, the data often deviates greatly, which leads to the deviation of the measurement results

Method used

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  • A device and method for measuring carbon dioxide content in pyrite
  • A device and method for measuring carbon dioxide content in pyrite
  • A device and method for measuring carbon dioxide content in pyrite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1, with reference to figure 1 , a device for measuring carbon dioxide content in pyrite,

[0039] The device comprises a support 2 on which a plastic bottle 3 and a capillary absorber 7 are arranged;

[0040] The plastic bottle 3 is provided with an acid-adding casing 4 connected by a rubber stopper. The acid-adding casing 4 is composed of a glass outer tube and an inner tube. At the bottom, there is an air outlet on the upper part of the glass outer tube;

[0041]The bracket 2 below the plastic bottle 3 is provided with a decomposing bottle 9, an alcohol lamp 10 is arranged below the decomposing bottle 9, and a ground sleeve 6 is connected on the decomposition bottle 9, and the ground sleeve 6 includes an external sleeve, and the external sleeve There is an internal casing inside the tube, the lower end of the internal casing communicates with the decomposition bottle 9, and the upper end extends out of the external casing to connect with the three-way coc...

Embodiment 2

[0043] Embodiment 2, a method for measuring carbon dioxide content in pyrite, the method uses the device for measuring carbon dioxide content in pyrite described in embodiment 1, the method may further comprise the steps:

[0044] (1) Preparatory work: Before measuring, it is necessary to remove the carbon dioxide in the cooling jacket tube 8 to the gas measuring tube 11, and adjust the barometer liquid level of the U-shaped compensating tube to the level, and simultaneously remove the potassium hydroxide liquid in the capillary absorber 7. When the surface is adjusted to the upper scale, the liquid level of the solution in the gas measuring tube 11 rises to the top, and its position is determined according to the work requirements at that time; through the positive and negative pressure inspection brought by the balance bottle 15 lifting, it is proved that there is no air leakage, that is, It can be prepared for sample measurement; add 1% dilute sulfuric acid for exhaust in th...

Embodiment 3

[0062] Embodiment 3, the method experiment one of measuring carbon dioxide content in pyrite:

[0063] 1. Preparation of reagents

[0064] The water used in this example complies with the specifications of third-grade water in GB / T6 682; the listed reagents, unless otherwise specified, refer to analytically pure reagents.

[0065] 1.1 Benchmark sodium carbonate: burn to constant weight at 300°C before weighing;

[0066] 1.2 Add 3% copper sulfate to phosphoric acid solution: weigh 15g CuSO 4 ·5H 2 O solid, add to the prepared 1+1 phosphoric acid solution, dissolve and mix;

[0067] 1.3 Potassium hydroxide solution: 400g / L;

[0068] 1.4 Dilute sulfuric acid blocking solution: Add 1mL of sulfuric acid to 1000mL of water, add a few drops of 1g / L methyl orange indicator solution to make the solution red, and shake well;

[0069] 1.5 Dilute sulfuric acid exhaust solution: add 10mL sulfuric acid to 1000mL water, add a few drops of 1g / L methyl orange indicator solution to make th...

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Abstract

The invention discloses a method for determining the content of carbon dioxide in ferrous disulfide and belongs to the field of chemical assay determination. The method comprises the following main steps: enabling a sample to react with a phosphoric acid solution with 3% of copper sulfate to release carbon dioxide gas, collecting the gas in a gas measuring tube by virtue of dispelling with a dilute acid solution, absorbing the carbon dioxide gas in an absorber by a 40% potassium hydroxide solution, measuring a gas volume difference before absorbing and after absorbing, and calculating the content of carbon dioxide by virtue of a correction coefficient which is obtained under the same condition. The method is used for determining the content of carbon dioxide in ferrous disulfide in a gas measuring manner. A device used by the method is capable of ensuring gas sealed operation, so that the measurement technical effects of large measurement range, low time consumption and accurate data can be achieved. The device for determining the content of carbon dioxide in ferrous disulfide, disclosed by the invention, is high in gas tightness, simple in structure and convenient to operate.

Description

technical field [0001] The invention relates to a content measuring device and method in chemical analysis, in particular to a device and method for measuring carbon dioxide content in pyrite. Background technique [0002] Pyrite is a very important mineral in national production, and in order to determine the content of organic carbon in it, the content of inorganic carbon, namely carbon dioxide, must be obtained. [0003] Existing carbon dioxide is generally measured by non-aqueous titration, that is, the sample is decomposed with phosphoric acid, and the carbon dioxide produced is absorbed by ethanol-diethylenetriamine, and thymolphthalein is used as an indicator, and titrated with ethanol-potassium hydroxide standard solution. When the carbon dioxide content is slightly higher, that is, the data often deviates greatly, which leads to the deviation of the measurement results. Contents of the invention [0004] The technical problem to be solved by the present invention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N7/04
Inventor 岳秋张晓梅陈奕张素芳郭凤云单连勇徐会会
Owner BLUESTAR LEHIGH ENG INST CO LTD
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