Grinding Media 80% 30mm 40mm 50mm 60mm Aluminum Oxide Al2O3 Alumina Ceramic Balls for Ball Mill
The microcrystalline wear-resistant 80% alumina ball produced by Zhongci ceramic materials have good performance in grinding Feldspar, Clay etc, is a high-quality grinding medium made of selected high grade material, advanced molding technology and calcined in high temperature tunnel kiln. Possessed with high density, high hardness, low wear, good seismic stability and good corrosion resistance, the products are the most ideal medium for grinding glaze, blank and mineral powder processing, and are used as the grinding medium of ball mill in ceramics, cement, paint, refractory, inorganic mineral powder and other industries.
80% Alumina grinding ball is one ideal mill grinding media, it can keep the purity and improve the stability of the grinding materials especially the ceramic glaze. High alumina ceramic balls as grinding ball with high quality raw materials as well as the middle alumina ceramic balls are produced with the following technology: advanced spray drying technology, dry type full automatic isostatic pressure and high temperature roller kiln sintering technology.
Size of 80% Alumina Ceramic Balls:
1.Normal size: 20mm, 25mm, 30mm, 40mm, 50mm, 60mm. 70mm These sizes our factory produce regularly, many of them are in large stock.
2. We can provide the other sizes by customers' requirements, just tell us what you need.
High Alumina Grinding Ball, is higher than the common alumina balls. When it is working, the ball won't pollute the grinding materials, so it can keep the purity and improve the stability of grinding materials especially the ceramic glaze 92% Alumina Grinding Ball, Due to its excellent properties such as high strength, high hardness, high wear resistance, high specificity, small size, high temperature resistance, corrosion resistance, and no pollution, alumina grinding balls are widely used in various ceramics, enamels, glass, chemical and other factories. Finishing and deep processing of rough and hard materials, as the grinding body of fine grinding equipment such as ball mills, pot mills, and vibration mills. 95% High Alumina Grinding Ball have the advantages of high density, high hardness, high wear resistance, etc., and are widely used in ceramic factories, cement factories, enamel factories, glass factories and other ball mills as grinding media for ceramic raw materials and glazes. During the grinding/grinding process, the ceramic balls do not break and contaminate the abrasive material.
| Type | ZC-80 | ZC-92 | ZC-95 |
| Al2O3 content(%) | ≥80 | ≥92 | ≥95 |
| Water adsorption(%) | ≤0.02 | ≤0.01 | ≤0.005 |
| Abrasion loss (%) | ＜0.011 | ＜0.010 | ＜0.0084 |
| Bulk Density (g/cm3) | ≥3.63 | ≥3.65 | ≥3.68 |
| Crushing strength (N/PC) | - | ≥2000 | ≥2000 |
| Mohs Hardness (scale) | 8.5-9.0 | 9 | 9 |
How to optimize the grinding process in Ball Mill for Alumina Ball:
1. In the situation of wet grinding
Usually,the total charges of the alumina balls in one ball mill should be not less than 55% of the total ball mill capacity.
Empirical formula of charged alumina ball quantity into ball mill:
M=3.14xR2xDxLx25%+1000
Remark M= charged alumina ball quantity(kg)
D=Alumina ball density(g/cm)
R=Radius of ball mill L=Ball Mill Length
Alumina grinding ball proportion:
For a bright new installed ball mill, the alumina balls proportion depends on the capacity of the ball mill and the fineness of the grinding raw materials
|
Ball mill capacity(MT) |
Grinding raw materials |
Feeding size |
proportion |
|
>15MT |
Green body |
> 1.5cm |
Φ30:Φ40:Φ50:Φ60 2:3:3:2 or 2:4:3:1 |
|
2 .5MT, 5MT |
Glaze |
Φ30:Φ40:Φ50:Φ60 3：4：2：1 |
|
|
Glaze |
Φ30:Φ40:Φ50 3：5：2 |
Alumina ball recharge quantity
Recharge quantity=Primary ball quantity*Ball wear loss*Grinding time
2. In the situation of dry grinding:
Dry grinding is widely used in mining, ceramics industries, we developed alumina balls performed well on dry grinding situation with much lower wear-loss, it helps solve the problem of materials contamination.
The proportion of the alumina ball for dry grinding depends on the hardness and fineness of the grinding raw material, generally speaking, CIP formed grinding ball used for dry grinding.
Wear-loss testing method of alumina ball:
This method is the Chinese domestic testing method, put alumina ball samples into polyurethane jar, testing the wear loss in the unit time.
Firstly, put 4kg alumina ball and 4L water into the grinding jar, put the jar into the testing machine, grinding 2h on the revolution of 80 r/min. Take out the samples dry them and get weight M1.
Secondly, put the above samples again into the jar, add 4L water, grinding 24h on the same revolution of 80 r/min.
Thirdly, take out the samples dry and get weight M2.
Fourthly, testing the average diameter of the samples, get average diameter D.
Fifthly, wearloss calculation:
EWT(%o )=KD M 1-M2 )M 1
Empirical formula: EWT(%o)= (M1-M2)M1/24 /100*1000*D
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