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Liquid cement grinding aid component comparison instrument

A technology of cement grinding aids and ingredients, applied in the field of testing equipment, can solve the problems of poor repeatability, slow speed, high cost, etc., and achieve the effects of accurate acceptance testing, improved reliability, and large sampling volume

Inactive Publication Date: 2012-01-04
FUJIAN FURUN BUILDING MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a common liquid chromatograph is used to detect and analyze the component content of this product, since the diameter of the chromatographic column matched with the liquid chromatograph for conventional analysis is generally less than 4.6mm, the injection volume is generally below 2ul. For a product made of simple physical mixture of multiple components, there are defects in sampling that are not representative, poor repeatability, and the samples taken cannot truly reflect the quality of the product, which makes it difficult to meet the requirements of liquid cement aids. In the process of production and sales of abrasive products, it is required for the purpose of rapid acceptance testing whether the content of the ingredients is stable, that is, whether the product quality is stable; There are defects such as low detection accuracy, high cost, and slow speed. It also cannot meet the requirements of rapid and accurate detection and judgment of the stability of the composition and content of liquid cement grinding aid products.
Therefore, there is no special equipment and method for liquid cement grinding aids to carry out product quality acceptance inspection in the process of production, sales and application at present. It is only an indirect inspection method to determine the quality of the product based on the relevant index parameters of cement. The defect is that after the cement grinding aid product is added to the cement, it will participate in a complex cement hydration reaction process. The chemical substances of the product itself are relatively complex, and it is difficult to determine a unified standard. Therefore, it is difficult to accurately and objectively judge the quality of cement grinding aid products with this indirect inspection method, which also causes the entire industry of cement grinding aid products to be in the market. Chaos in product quality management control and product sales market

Method used

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  • Liquid cement grinding aid component comparison instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: select chromatographic column model C18 (2) 5u, the high-efficiency analytical liquid chromatograph that diameter is 20mm is used as liquid cement grinding aid composition comparison instrument of the present invention, mobile phase adopts chromatographic grade methanol, sample 1, respectively Sample 2 and sample 3 are tested, and the detection spectrum is as follows Figure 1-Figure 3 .

[0017] 1. The test data results corresponding to sample 1 are:

[0018] Print time: April 22, 2011, 16:55:12

[0019] Injection time: April 22, 2011, 16:45:56,

[0020] The opened spectrum file: D:\spectrum\BTA-99 sample 1

[0021] The detection data is as follows:

[0022]

[0023] 2. The test data results corresponding to sample 2 are:

[0024] Print time: April 23, 2011, 15:08:53

[0025] Injection time: April 23, 2011, 15:1:33,

[0026] The opened spectrum file: D:\spectrum\BTA-99 sample 2

[0027] The detection data is as follows:

[0028]

[0029] ...

Embodiment 2

[0036] Embodiment 2: select the chromatographic column model C18 (2) 5u, the high-efficiency analytical liquid chromatograph that the diameter is 25mm is used as the liquid cement grinding aid composition comparator of the present invention, mobile phase adopts chromatographic grade methanol, sample 1, respectively Sample 2 and sample 3 are tested, and the detection spectrum is as follows Figure 4-Figure 6 .

[0037] 1. The test data results corresponding to sample 1 are:

[0038] Print time: April 25, 2011, 14:44:15

[0039] Injection time: April 25, 2011, 14:25:21,

[0040] The opened spectrum file: D:\spectrum\BTA-99 sample 1

[0041]

[0042]

[0043] 2. The test data results corresponding to sample 2 are:

[0044] Print time: April 26, 2011, 14:27:4

[0045] Injection time: April 26, 2011, 14:13:49,

[0046] The opened spectrum file: D:\spectrum\BTA-99 sample 2

[0047]

[0048]

[0049] 3. The test data results corresponding to sample 3 are:

[0050]...

Embodiment 3

[0054] Embodiment 3: select the chromatographic column model C18 (2) 5u, the high-efficiency analytical liquid chromatograph that the diameter is 30mm is used as the liquid cement grinding aid composition comparator of the present invention, mobile phase adopts chromatographic grade methanol, sample 1, respectively Sample 2 and sample 3 were tested. The detection result is basically the same as that in Example 2, but the mobile phase consumption is large during the detection process, the detection time is longer, the detection cost is high, and the precision is also low.

[0055] as attached Figure 1-Figure 3 Shown, there is certain error in the repeatability of embodiment 1 three detection results; As attached Figure 4-Figure 6As shown, the repeatability of the three test results in Example 2 is good, the precision is high, and the error is less than 1%; the mobile phase consumption in the test process of Example 3 is large, and the test cost is high. Comparing the test r...

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Abstract

The invention discloses a liquid cement grinding aid component comparison instrument. A chromatographic column is improved on the basis of a liquid chromatograph which consists of a liquid accumulator, a high-pressure pump, a sample injector, a chromatographic column, a detector, a data processor and a recorder according to the characteristics of a cement grinding aid product, and a chromatographic column with a diameter of between 20 and 30 mm is selected. The liquid cement grinding aid component comparison instrument accurately, quickly and reliably checks and accepts and detects the component construction and the content stability of the liquid cement grinding aid product during production, marketing and application, and the conventional indirect chemical component content inspection of the cement grinding aid product is changed into direct inspection, and the product detection reliability is improved.

Description

1. Technical field [0001] The invention relates to a detection instrument and equipment, in particular to a liquid cement grinding aid composition comparison detection equipment, in particular to a liquid chromatograph. 2. Background technology [0002] Liquid cement grinding aid is an industrial product formed by simple physical mixing of various organic and inorganic compounds at normal temperature and pressure. Its quality depends on whether the composition and content of each component are stable, that is, the The acceptance of the product only needs to know whether the component composition of each batch of products and the content of the same component are stable. Liquid cement grinding aids with unstable quality will directly affect the cost of cement production and cement quality. At present, there is no instrument that can quickly detect and judge the stability of the component content of liquid cement grinding aid products in the process of production, sales and ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/60
Inventor 温仁付
Owner FUJIAN FURUN BUILDING MATERIAL TECH
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