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Item | 95% alumina balls | 92% alumina balls | 75% alumina balls | 68% alumina balls |
Al2O3 content | ≥95% | ≥92% | ≥75% | ≥67% |
Fe2O3 content | ≤0.01% | ≤0.01% | ≤0.14% | ≤0.5% |
Density | ≥3.65g/cm3 | ≥3.65g/cm3 | ≥3.18g/cm3 | ≥2.98g/cm3 |
Abrasion | ≤0.01% | ≤0.01% | ≤0.14% | ≤0.03% |
Hardness | 9 | 9 | 8 | 8 |
HS Code | 69091200.00 | 69091200.00 | 69091200.00 | 69091200.00 |
Available Size | 0.5-70mm | 0.5-70mm | 30-70mm / customized | 30-70mm / customized |
Package Details | Type: | 25 kgs bags with pallet | |
Size : | 1m x 1m x 0.1m (pallet size) | ||
Weight: | 1000-1300kg per pallet 25-27 tons per 20'FCL 20 packages per 20'FCL | ||
Mark and Label: | Customizable | ||
Delivery time | · sample--1 day after confirming your required details · order--amount less than 100ton will take 14 days to produce |
Alumina grinding ball proportion: | ||||
Ball mill capacity(MT) | Grinded raw materials | Proportion | ||
>15MT | Green Body | 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 | ||
This method is the Chinese domestic testing method, put alumina ball samples into polyurethane jar, testing the wear loss in the unit time. 1. 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. 2. Put the above samples again into the jar, add 4L water, grinding 24h on the same revolution of 80 r/min. 3. Take out the samples dry and get weight M2. 4. Testing the average diameter of the samples, get average diameter D. 5. Wearloss calculation: EWT(%o )=KD M 1-M2 )M 1 Empirical formula: EWT(%o)= (M1-M2)M1/24 /100*1000*D |