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Process for improving ball milling dispersion of ceramic slurry

A ceramic slurry and dispersing technology, applied in the direction of grain processing, etc., can solve the problems of uneven dispersion, increased surface area of ​​grinding body, adhesion of slurry, etc., and achieve improved ball mill dispersion, enhanced grinding and dispersion, high specific gravity and The effect of viscosity

Active Publication Date: 2014-07-02
TDK DALIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some special occasions, it is necessary to ensure that the material is fully ground and dispersed, and at the same time it is hoped to obtain a higher slurry yield (slurry yield = pulp weight / raw material weight), so the smaller size Grinding body cannot be used
Under the condition of the same volume loading, if a small-sized grinding body is used, the surface area of ​​the grinding body will increase rapidly, and more slurry will be adhered, seriously affecting the slurry yield
If large-sized grinding bodies are used, although the slurry yield can be improved to a certain extent, the lack of small-sized grinding bodies will lead to insufficient grinding of materials and uneven dispersion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (a) Put grinding balls whose volume is 2 / 3 of the grinding barrel into a grinding barrel with a height-to-inner diameter ratio of 1.5 and lined with polyurethane.

[0016] (b) Weigh 1 kg of ceramic powder and add it to the grinding barrel first, then add 0.33 kg of polyurethane resin liquid material into the grinding barrel for one grinding, the speed of the grinding barrel is controlled at 35rpm, and the grinding time is controlled at 10h.

[0017] (c) After the primary grinding, add 0.67 kg of polyurethane resin liquid material into the grinding bucket for secondary dispersion. The speed of the grinding bucket is controlled at 35 rpm, and the dispersion time is controlled at 4 hours.

[0018] (d) After grinding and dispersing, analyze the dispersion of the ceramic slurry, and the slurry yield can reach 95%.

Embodiment 2

[0020] (a) Put grinding balls whose volume is 2 / 3 of the grinding bucket into a grinding bucket with a height-to-inner diameter ratio of 1.7 and lined with polyurethane.

[0021] (b) Weigh 1 kg of ceramic powder and add it to the grinding bucket first, then add 0.42 kg of polyurethane resin liquid material into the grinding bucket for one grinding, the speed of the grinding bucket is controlled at 40rpm, and the grinding time is controlled at 8h.

[0022] (c) After finishing the primary grinding, add 0.58kg of polyurethane resin liquid material into the grinding bucket for secondary dispersion. The speed of the grinding bucket is controlled at 40rpm, and the dispersion time is controlled at 3h.

[0023] (d) After grinding and dispersing, analyze the dispersion of the ceramic slurry, and the slurry yield can reach 97%.

Embodiment 3

[0025] (a) Put grinding balls whose volume is 2 / 3 of the grinding barrel into a grinding barrel with a height-to-inner diameter ratio of 1.9 and lined with polyurethane.

[0026] (b) Weigh 1 kg of ceramic powder and add it to the grinding barrel first, then add 0.5 kg of polyurethane resin liquid material to the grinding barrel for one grinding, the speed of the grinding barrel is controlled at 45rpm, and the grinding time is controlled at 6h.

[0027] (c) After the primary grinding, add 0.5 kg of polyurethane resin liquid material into the grinding bucket for secondary dispersion. The speed of the grinding bucket is controlled at 45rpm, and the dispersion time is controlled at 2h.

[0028] (d) After grinding and dispersing, analyze the dispersion of the ceramic slurry, and the slurry yield can reach 98%.

[0029] The invention has the advantages of: a process for improving the dispersion of ceramic slurry by ball milling, which solves the problem of how to complete the grindi...

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Abstract

The invention relates to a ball milling dispersion process and discloses a process for improving the ball milling dispersion of ceramic slurry. The process comprises the following steps: (a) selecting a grinding barrel lined with polyurethane, wherein the ratio of the height of the grinding barrel to the inner diameter of the grinding barrel is 1.4-2, and the grinding barrel is filled with a certain quantity of grinding balls with the volume being 2 / 3 of that of the grinding barrel; (b), firstly, adding weighed ceramic powder into the grinding barrel, and then adding part of polyurethane resin liquid into the barrel for one-time grinding, wherein the mass ratio of the ceramic powder to the polyurethane resin liquid is 1:(0.33-0.5); the process parameters are as follows: the rotation speed of the grinding barrel is 35-45rpm, and the grinding time is 6-10h; (c) after completing the one-time grinding, adding the rest polyurethane resin liquid into the grinding barrel for second-time grinding, wherein the process parameters are as follows: the rotation speed of the grinding barrel is 35-45rpm, and the dispersing time is 2-4h; (d) after completing the grinding dispersion, carrying out dispersion analysis on the ceramic slurry. The ceramic powder and the liquid are fully ground and mixed to achieve an optimal dispersion state, and the slurry production rate is high and can be up to 95-98 percent.

Description

technical field [0001] The invention relates to a technique for ball milling dispersion, more specifically, relates to a technique for improving ball milling dispersion of ceramic slurry. Background technique [0002] The ball mill is the most widely used grinding machine at present, and it is the most widely used in the ceramic industry, and it is also the only equipment and method in the ceramic industry that can achieve fine grinding. In the ball milling process, the loading capacity of the ball mill (the number of grinding bodies), the size gradation of the grinding bodies, the specific gravity and viscosity of the slurry will have a great impact on the ball milling efficiency. If the load of the ball mill is too large, the grinding bodies will collide with each other inside the ball mill, thereby losing energy and reducing the grinding efficiency. If the amount of grinding body is too small, the impact and grinding times of the grinding body on the material will be red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C17/10
Inventor 曲文超郭丽娟谭迎春张洪杰近藤真一
Owner TDK DALIAN