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Detection method of carbon powder for aluminum and application of detection method

A detection method, carbon technology, applied in the direction of using material absorption and weighing, etc., can solve the problem that the surface characteristics of the powder cannot be accurately measured, and achieve the effect of low cost

Pending Publication Date: 2022-03-18
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a detection method of aluminum carbon powder and its application to solve the technical problem in the prior art that the surface characteristics of the powder cannot be accurately measured under the condition of low cost

Method used

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  • Detection method of carbon powder for aluminum and application of detection method
  • Detection method of carbon powder for aluminum and application of detection method
  • Detection method of carbon powder for aluminum and application of detection method

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Experimental program
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preparation example Construction

[0060] As an optional embodiment, the preparation method of the prebaked anode includes:

[0061] S1. Obtain the powder to be tested;

[0062] S2. Detecting the powder to be detected by the detection method to obtain the oil absorption rate of the powder;

[0063] S3. According to the oil absorption rate, judge whether the powder is qualified;

[0064] If so, mixing the powder and aggregate to obtain a dry material;

[0065] If not, return to the production process;

[0066] S4. Preheating the dry material, then adding asphalt for mixing to obtain a mixed paste;

[0067] S5. The mixed paste is hot-pressed and then fired to obtain a prebaked anode.

[0068] As an optional implementation, such as image 3 As shown, according to the oil absorption rate, it is judged whether the powder is qualified, which specifically includes:

[0069] S31. Obtain the target oil absorption rate;

[0070] S32. According to the oil absorption rate and the target oil absorption rate, determin...

Embodiment 1

[0079] Such as figure 1 Shown, a kind of detection method of carbon powder for aluminum, the method comprises:

[0080] S1. Obtain the filter carrier;

[0081] S2. Add an organic reagent dropwise to the filter carrier and perform the first suction filtration, and then weigh to obtain the filter carrier weight m1;

[0082] S3. Obtain carbon powder weight m2;

[0083] S4. Place the carbon powder on the filter carrier and add dropwise an organic reagent, perform the second suction filtration, and then weigh to obtain the carbon carrier and weight m3;

[0084] S5. Obtain the oil absorption rate h of the carbon powder according to the filter carrier weight m1, the carbon powder weight m2 and the carbon carrier weight m3.

[0085] The formula for calculating the oil absorption rate h of carbon powder is:

[0086] h=(m3-m2-m1) / m2.

[0087] The judgment principle of the end point of the first suction filtration and the second suction filtration is until the falling interval betwe...

Embodiment 2

[0110] Compare embodiment 2 and embodiment 1, the difference of embodiment 2 and embodiment 1 is:

[0111] Organic agents include castor oil.

[0112] Filter carriers include filter paper and filter cloth;

[0113] The filter paper has a pore size of 30 μm, and the filter cloth has a pore size of 200 μm.

[0114] The powder was judged to be qualified, and the oil absorption rate of the powder was 39.8%.

[0115] The components of the aggregate include a first aggregate, a second aggregate and a third aggregate;

[0116] The particle diameter of the first aggregate is 4mm-8mm, the particle diameter of the second aggregate is 1mm-4mm, and the particle diameter of the third aggregate is 0mm-1mm.

[0117] Asphalt accounts for 14% of the dry material and powder accounts for 40% of the dry material.

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Abstract

The invention relates to the field of detection of carbon powder for aluminum, in particular to a detection method of carbon powder for aluminum and application of the detection method. The method comprises the following steps: obtaining a filter carrier; dropwise adding an organic reagent into the filter carrier, carrying out first suction filtration, and then weighing to obtain the weight m1 of the filter carrier; the weight m2 of the carbon powder is obtained; placing the carbon powder on a filter carrier, dropwise adding an organic reagent, carrying out second suction filtration, and then weighing to obtain the weight m3 of the carbon carrier; obtaining the oil absorption rate h of the carbon powder according to the weight m1 of the filter carrier, the weight m2 of the carbon powder and the weight m3 of the carbon carrier; according to the application, the detection method is used for detecting whether powder in raw materials for preparing the prebaked anode is qualified or not; quantitative description of the powder represented by carbon powder particles is realized through the oil absorption rate of the carbon powder, and due to the fact that only suction filtration is adopted, the cost of the whole process is low, and meanwhile the surface characteristics of the powder can be accurately measured.

Description

technical field [0001] The present application relates to the field of detection of carbon powder for aluminum, in particular to a detection method and application of carbon powder for aluminum. Background technique [0002] Prebaked anodes are made of petroleum coke and pitch coke as aggregates and coal tar pitch as binders. They are used as anode materials for prebaked aluminum electrolytic cells. In the anode formula, there are also bones composed of Dry material composed of powder and powder, in which powder generally accounts for 40% of the dry material, and because the surface area of ​​powder is much larger than that of aggregate, most of the asphalt is absorbed by powder to form rubber, which accounts for 40% of the dry material. 60% of the total weight of the green body. From a functional point of view, the anode green body is a complex composed of aggregate and rubber, the former is dispersed in the latter, and the rubber is the continuous phase, which is the matr...

Claims

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Application Information

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IPC IPC(8): G01N5/02C25C3/12
CPCG01N5/02C25C3/125
Inventor 寇帆仓向辉张树朝李荣柱
Owner GUIZHOU BRANCH CHINA ALUMINUM IND