Method for preparing medium aluminum grinding balls by secondary ball milling

A technology of secondary ball milling and grinding balls, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of low ball milling efficiency, long ball milling time, high labor intensity, etc., to improve the output of grinding balls and chemical stability Good, the effect of improving product quality

Inactive Publication Date: 2012-05-09
HENAN GOLD SOURCE NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the performance of grinding medium balls used by domestic wall and floor tile enterprises is not satisfactory, and there are disadvantages such as poor wear resistance, easy to break and break, and more impurities.
In the production of ball mills in domestic Chinalco porcelain ball factories, the ball milling time is long, the power

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: a kind of method for secondary ball milling to prepare medium aluminum grinding balls, comprising the following steps:

[0024] (1) Grinding: Weigh 88% of cooked bauxite, 4% of dolomite, 4% of porcelain stone, 3% of clay, and 1% of sodium humate; the cooked bauxite includes aluminum content of 72-73%, 74% -75%, 77-78% three kinds of cooked bauxite, the weight ratios are 34%, 21% and 33% respectively;

[0025] Crush the blocky raw materials to less than 3mm, put them into the ball mill, then add water according to the weight ratio of raw materials and water 7:3, add 3-5‰ dispersant sodium tripolyphosphate and 3-5‰ poly Vinyl alcohol solution, start ball milling, the speed of the ball mill is 16-20r / min, the slurry is sieved with a 500-mesh standard sample sieve, the sieve residue is below 0.2%, and stale after 8-12h; the mass concentration of the polyvinyl alcohol solution 5%;

[0026] The ball milling adopts the second ball milling method. Two kinds of g...

Embodiment 2

[0031] Embodiment 2: basically the same as Embodiment 1, the difference is:

[0032] (1) Grinding: raw materials cooked bauxite 88%, dolomite 3%, porcelain stone 4%, clay 3%, sodium humate 2%, of which the cooked bauxite includes aluminum content of 72%, 74%, 77% Three kinds of cooked bauxite, the weight ratios are 34%, 21% and 33% respectively; plus 4‰ dispersant sodium tripolyphosphate and 4‰ polyvinyl alcohol solution;

[0033] (2) Molding: Molding pressure is 400MPa, hold pressure for 3-5 seconds.

[0034] All the other steps are the same as Example 1 such as steps such as secondary ball milling method, granulation, and firing.

Embodiment 3

[0035] Embodiment 3: Aluminum grinding ball and preparation method thereof are basically the same as Example 1, except that:

[0036] (1) Grinding: 88% cooked bauxite, 5% dolomite, 2% porcelain stone, 4% clay, 1% sodium humate, among which cooked bauxite includes aluminum content of 73%, 75%, 77% Three kinds of cooked bauxite, the weight ratios are 34%, 21% and 33% respectively; plus 5‰ dispersant sodium tripolyphosphate and 3‰ polyvinyl alcohol solution;

[0037] (2) Molding: Molding pressure is 390MPa, hold pressure for 3-5 seconds.

[0038] All the other steps are the same as Example 1 such as steps such as secondary ball milling method, granulation, and firing.

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PUM

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Abstract

The present invention relates to a method for preparing medium aluminum grinding balls by a secondary ball milling process. According to the method, raw materials are weighed according to a certain ratio, wherein the raw materials comprise, by weight, 85-90% of sintered bauxite, 2-5% of dolomite, 2-5% porcelain stone, 2-5% of clay and 0.5-2% of sodium humate; the massive raw materials are crushed, and added to a ball mill; water, a dispersion agent sodium tripolyphosphate and a polyvinyl alcohol solution are added to the ball mill; treatments of ball milling, screening, staling are performed; a secondary ball milling treatment and a screening treatment are performed; the resulting slurry is subjected to spray drying and pelletizing by a high tower to obtain a powder material; the powder material is screened; the screened powder material is subjected to pressing formulation under isostatic pressure to obtain a blank material; the blank material is placed into a kiln, and is subjected to high temperature firing to obtain the finished product. According to the present invention, the secondary ball milling treatment is adopted, such that the grinding efficiency and the grinding ball yield can be improved, and the production cost can be reduced; the AL2O3 content in the product is more than 70%, the compression strength is more than 1800 MPa, the volume density is 3.0-3.03 g/cm<3>, the abrasion loss is less than or equal to 0.03%, and the performance of the product of the present invention is superior to the similar products.

Description

technical field [0001] The invention relates to a ball grinding method, in particular to a method for preparing medium aluminum grinding balls by a secondary ball milling process. Background technique [0002] Grinding media are widely used in the grinding and processing of raw materials in various industries such as minerals, ceramics, paints, and cosmetics. They are a necessity in many industries and have a wide market. Ball milling can change the particle size distribution of the powder. The ball milling process requires the matching of grinding balls with different particle sizes to produce better results. In addition, in order to avoid pollution to the powder during the ball milling process, it is necessary to choose a mill that is wear-resistant and has no harmful ingredients. For the ball, it is best to choose a grinding ball made of the same material as the powder. [0003] At present, the performance of grinding medium balls used by domestic wall and floor tile en...

Claims

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Application Information

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IPC IPC(8): C09K3/14
Inventor 康荣恩
Owner HENAN GOLD SOURCE NEW MATERIAL TECH
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