Preparation method of water for classifying micropowder

A silicon carbide, fine technology, applied in the field of preparation of graded water, can solve the problems of process, immature technology, stay, etc., and achieve the effect of simple and easy operation, high cleanliness, and easy and flexible adjustment of the preparation method.

Inactive Publication Date: 2012-07-04
PINGDINGSHAN YICHENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the grading methods for fine powder are based on dry grading, and there are few enterprises that use water as the medium for grading, and their processes and technologies are not mature, so they can only produce relatively better products for dry grading. With the development of the times, the advancement of science and technology, and the improvement of industry technology, the requirements for the pH value, Cv value, and product cleanliness of micro-powder products in the production process are becoming more and more important. As an important indicator of the quality of micro-powder products, how to meet them? Adjustment and preparation of graded water to improve the quality of graded products have significant impact and significance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A method for preparing water for grading silicon carbide fine powder, which is prepared by adding lye and dispersant to pure water, and the steps are as follows:

[0011] Step 1: Use reverse osmosis equipment to remove minerals and trace elements in the raw water through reverse osmosis membrane filtration, so that the conductivity of the water body is controlled at 8 μs / cm, and pure water with a pH value of 6.0 is produced;

[0012] Step 2: adding sodium hydroxide into the water body of the obtained pure water, and stirring until uniform, so that the pH value is regulated at 6.5;

[0013] Step 3: Take sodium oleate and add it into the water body whose pH value is adjusted to 6.5 prepared in Step 2. The amount added is 0.5% of the weight of the water body, and then stirred until uniform, so as to prepare water for grading silicon carbide fine powder. Embodiment two

Embodiment 2

[0014] A method for preparing water for grading silicon carbide fine powder, which is prepared by adding lye and dispersant to pure water, and the steps are as follows:

[0015] Step 1: Use reverse osmosis equipment to remove minerals and trace elements in the raw water through reverse osmosis membrane filtration, so that the conductivity of the water body is controlled at 6 μs / cm, and pure water with a pH value of 6.5 is produced;

[0016] Step 2, add a mixture of sodium hydroxide and sodium carbonate in the water body of the obtained pure water, stir until uniform, and adjust the pH value to 7.5;

[0017] Step 3: Take the sulfate ester salt and add it to the water body whose pH value is adjusted to 7.5 prepared in step 2. The addition amount is 2% of the weight of the water body, and then stir until uniform, so as to obtain water for grading silicon carbide fine powder. Embodiment Three

Embodiment 3

[0018] A method for preparing water for grading silicon carbide fine powder, which is prepared by adding lye and dispersant to pure water, and the steps are as follows:

[0019] Step 1: Use reverse osmosis equipment to remove minerals and trace elements in the raw water through reverse osmosis membrane filtration, so that the conductivity of the water body is controlled at 4 μs / cm, and pure water with a pH value of 7.0 is produced;

[0020] Step 2: Add a mixed liquid of potassium hydroxide and sodium carbonate into the obtained pure water, stir until uniform, and adjust the pH value to 9.0;

[0021] Step 3: Take the alkyl quaternary ammonium salt and add it into the water body whose pH value is adjusted to 9.0 prepared in the step 2. The addition amount is 4% of the water body weight, and then stir until it is uniform, so as to prepare water for grading silicon carbide fine powder.

[0022] The invention is prepared by adding lye and dispersant to pure water, which realizes th...

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Abstract

The invention discloses a preparation method of water for classifying micropowder, which relates to a preparation method of water for classification. The water for classifying the micropowder is prepared by adding alkali liquid and dispersant to pure water. The preparation method comprises the following steps: firstly, using a reverse osmosis membrane to prepare raw water into pure water; then, adding the alkali liquid to the water body of the prepared pure water to adjust the pH value to 6.5-9.0; and finally, adding the dispersant to the water body with the adjusted pH value, and uniformly stirring to obtain the water for classifying the micropowder, wherein the weight of the dispersant added accounts for 0.5-4% of the weight of the water body. The method has the advantages of simple process and easy operation, improves the classification effect of the prepared water body, greatly enhances the conventional gravity settling effect of micropowder particles in the actual production, and improves the cleanliness of the water body, thereby being beneficial to the better classification of silicon carbide micropowder by using water as a medium and promoting the quality of the classified product.

Description

technical field [0001] The invention relates to a method for preparing water for classification, in particular to a method for preparing water for classification of fine powder. Background technique [0002] At present, most of the grading methods for fine powder are based on dry grading, and there are few enterprises that use water as the medium for grading, and their processes and technologies are not mature, so they can only produce relatively better products for dry grading. With the development of the times, the advancement of science and technology, and the improvement of industry technology, the requirements for the pH value, Cv value, and product cleanliness of micro-powder products in the production process are becoming more and more important. As an important indicator of the quality of micro-powder products, how to meet them? The grading water is used to adjust the preparation and improve the quality of the products after grading, which has significant influence a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F1/44B03B5/62
Inventor 杨正宏朱春燕张强
Owner PINGDINGSHAN YICHENG NEW MATERIAL
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